Radiator surface potential measuring device

Abstract

The utility model discloses a radiator surface potential measuring device, and relates to the technical field of local potential measurement. Comprising a measuring container which contains a sodium chloride mixed solution added with acetic acid, and a radiator sample piece extends into the sodium chloride mixed solution; a stirring rod of the strong magnetic stirrer is put into the sodium chloride mixed solution, and the sodium chloride mixed solution is in a non-static state through rotation of the stirring rod; the reference electrode is used as a reference electrode and is placed in the receiving bottle filled with the saturated potassium chloride aqueous solution; one side of the salt bridge extends into the sodium chloride mixed solution, and the other side of the salt bridge extends into the saturated potassium chloride aqueous solution; the fixing clamp is used for connecting and fixing the radiator sample piece; and the recording instrument is respectively connected with the reference electrode and the fixing clamp and is used for recording potential change. A potential measurement mode is adopted to replace a corrosion test, so that the test period is greatly shortened, and the working efficiency is improved; and manpower resources and equipment waste are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to partial potential measurement technical field, concretely relates to radiator surface potential measuring device. BACKGROUND

[0002] With the rapid development of the automotive industry, the performance requirements of air conditioning systems are increasingly stringent, and the radiator, as a key component in the air conditioning system, realizes efficient heat dissipation function through the gas-liquid form change occurring when the refrigerant flows inside. In view of the continuous flow of refrigerant inside the radiator, it is essential to ensure its long-term operation without leakage to maintain the stability and reliability of the entire air conditioning system. Therefore, conducting a strict corrosion test on the radiator to verify its corrosion resistance has become an indispensable link. This test aims to evaluate the corrosion resistance of the radiator by simulating various corrosion conditions it may encounter in actual use environment, and further identify which parts of the radiator are most prone to leakage due to corrosion, so as to make targeted improvements in design and process.

[0003] However, the traditional corrosion test often has a long cycle, which undoubtedly greatly increases the development time and cost for verification. In the face of this challenge, how to shorten the corrosion test cycle and improve the verification efficiency has become a problem to be solved in the current automotive industry. SUMMARY

[0004] The purpose of the utility model is to provide a radiator surface potential measuring device, which applies potential measurement technology to aluminum radiators to replace the traditional corrosion test, effectively solving the problem of resource waste and time delay caused by the need to find corrosion leakage points for a long time in the prior art.

[0005] To achieve the above purpose, the present application provides a radiator surface potential measuring device, which comprises:

[0006] A measuring container contains a sodium chloride mixed solution with acetic acid inside, and the radiator sample is inserted into the sodium chloride mixed solution;

[0007] A strong magnetic force stirrer, with its stirring rod inserted into the sodium chloride mixed solution, rotates the stirring rod to keep the sodium chloride mixed solution in a non-stationary state;

[0008] A reference electrode, as a reference electrode, is placed in a receiving bottle containing saturated potassium chloride aqueous solution;

[0009] A salt bridge, with one side inserted into the sodium chloride mixed solution and the other side inserted into the saturated potassium chloride aqueous solution;

[0010] A fixing clamp for connecting and fixing the radiator sample;

[0011] A recording instrument is connected with the reference electrode and the fixed clamp respectively, and is used for recording the potential change.

[0012] In one of the embodiments, the heat sink sample is a sample of the measuring part cut from an aluminum heat sink.

[0013] In one of the embodiments, the sample of the measuring part only exposes the measuring position, and the rest of the position is covered by a coating.

[0014] In one of the embodiments, the coating material is a mixture of Freon coating and diluent.

[0015] In one of the embodiments, the coating is a silica gel layer.

[0016] In one of the embodiments, more than one heat sink sample is inserted into the sodium chloride mixed solution, and the potential is measured at the same time.

[0017] In one of the embodiments, the sodium chloride mixed solution is in a strong magnetic state under the action of a strong magnetic stirrer, and the heat sink sample is placed in the strong magnetic state.

[0018] In one of the embodiments, the reference electrode is used as a reference electrode, and the potential of the reference electrode is kept constant, and the recording instrument records the potential change of different heat sink samples relative to the reference electrode.

[0019] In one of the embodiments, the fixed clamp is installed on a support rod which is transversely arranged above the measuring container.

[0020] In one of the embodiments, the measuring container is a resin measuring container.

[0021] The above technical scheme of the utility model has the advantages compared with the prior art:

[0022] 1. The application adopts a potential measurement method to replace the corrosion test, greatly shortens the test period, improves the work efficiency, saves the human resources and equipment waste.

[0023] 2. The potential difference between the measured potential of each heat sink sample and the potential of the reference electrode is compared, and the greater the potential difference, the more serious the corrosion of the sample.

[0024] 3. A salt bridge is inserted between the two solutions to replace direct contact, preventing the solution in the receiving bottle from leaking into the test solution and interfering with the measurement. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the heat sink surface potential measuring device;

[0026] Figure 2 It is a comparison chart before and after the heat sink fin coating;

[0027] Wherein: 1, recording instrument, 2, wire, 3, salt bridge, 4, receiving bottle, 5, radiator-like piece, 6, stirring rod, 7, strong magnetic force stirrer, 8, measuring container, 9, fixing clamp, 10, support rod. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Please refer to Figure 1 The present embodiment provides a heat sink surface potential measuring device, which comprises a recording instrument 1, a salt bridge 3, a reference electrode, a receiving bottle 4, a strong magnetic force stirrer 7, a measuring container 8, and a fixing clamp 9. The measuring container 8 contains a sodium chloride mixed solution with acetic acid, and is placed on the strong magnetic force stirrer 7. The stirring rod 6 is placed in the sodium chloride mixed solution, and the sodium chloride mixed solution is in a non-stationary state by rotating the stirring rod 6, and the mixed solution is in a strong magnetic force state at this time.

[0033] Each heat sink sample 5 is clamped by a fixing clamp 9 and put into a sodium chloride mixed solution, the fixing clamp 5 is connected to a recording instrument 1 through a wire 2, and each fixing clamp is installed on a support rod 10 which is horizontally arranged above the measuring container. The recording instrument 1 is also connected to a reference electrode through a wire, the reference electrode is put into a receiving bottle which is filled with saturated potassium chloride aqueous solution, and serves as a reference comparison electrode. The salt bridge 3 is respectively inserted into the saturated potassium chloride aqueous solution and the sodium chloride mixed solution with acetic acid, and the salt bridge is inserted between the two solutions to replace the direct contact, so as to prevent the solution in the receiving bottle 4 from leaking into the test solution and interfering with the determination.

[0034] In the embodiment, as shown in Figure 2 The heat sink sample is a measured part sample cut from an aluminum heat sink, only the position to be measured is exposed, and the rest of the position is covered by a coating. Preferably, the coating material is a freon coating mixed with a diluent or a silica gel layer.

[0035] In the embodiment, one or more heat sink samples are inserted into the sodium chloride mixed solution, and the potential is measured at the same time.

[0036] In the embodiment, the heat sink sample is put into the sodium chloride mixed solution with acetic acid in a strong magnetic state, the chloride ion in the solution can destroy the oxide on the surface of the aluminum, and can make the oxygen in the air react with the aluminum, so that the aluminum is accelerated to corrode, and the surface potential changes. The reference electrode is used as a reference electrode, and the potential of the reference electrode remains constant. The potential of each heat sink sample is compared with the potential of the reference electrode, and the corrosion resistance of the heat sink sample is verified through the potential difference, that is, the greater the potential difference, the more serious the corrosion of the sample.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat sink surface potential measuring device characterized by, It comprises: a measuring container, which contains a sodium chloride mixed solution with acetic acid, and a heat sink sample is inserted into the sodium chloride mixed solution; a strong magnetic stirring machine, whose stirring rod is inserted into the sodium chloride mixed solution, and the sodium chloride mixed solution is in a non-stationary state by the rotation of the stirring rod; a reference electrode, which is used as a reference electrode and is placed in a receiving bottle containing saturated potassium chloride aqueous solution; a salt bridge, which is inserted into the sodium chloride mixed solution on one side and into the saturated potassium chloride aqueous solution on the other side; a fixing clamp, which is used to connect and fix the heat sink sample; a recording instrument, which is connected to the reference electrode and the fixing clamp respectively, and is used to record the change of potential.

2. The surface potential measurement apparatus according to claim 1, wherein The heat sink sample is an aluminum heat sink sample cut from the part to be measured.

3. The surface potential measurement apparatus according to claim 2, wherein The part to be measured is only exposed at the position to be measured, and the rest of the position is covered with a coating.

4. The surface potential measurement apparatus according to claim 3, wherein The coating material is a mixture of Freon coating and diluent.

5. The surface potential measurement apparatus according to claim 3, wherein The coating is a silica gel layer.

6. The surface potential measurement apparatus according to claim 1, wherein More than one heat sink sample is inserted into the sodium chloride mixed solution at the same time for potential measurement.

7. The surface potential measurement apparatus according to claim 1, wherein The sodium chloride mixed solution is in a strong magnetic state under the action of the strong magnetic stirring machine, and the heat sink sample is inserted into the sodium chloride mixed solution in the strong magnetic state.

8. The surface potential measurement apparatus according to claim 1, wherein The reference electrode is used as a reference electrode, and its potential remains constant. The recording instrument records the potential change of different heat sink samples relative to the reference electrode.

9. The surface potential measurement apparatus according to claim 6, wherein Each heat sink sample is fixed by a corresponding fixing clamp, and the fixing clamp is installed on a support rod which is transverse to the measuring container.

10. The surface potential measurement apparatus according to claim 1, wherein The measuring container is a resin measuring container.

Images