Energy-saving intergranular corrosion testing device

Abstract

The utility model discloses an energy-saving intergranular corrosion testing device, which relates to the technical field of corrosion testing devices and comprises a testing main body and a cooling main body, the testing main body is provided with a condenser pipe, and the cooling main body comprises an upper water tank and a circulating water tank. The upper water tank is provided with a water inlet pipe which automatically flows due to gravity and is connected with the water inlet end of the condensation pipe, the water outlet end of the condensation pipe is connected with a water outlet pipe which automatically flows due to gravity and is connected with the circulating water tank, the circulating water tank is provided with a circulating water pipe connected with the upper water tank, and the circulating water pipe is provided with a pump. The energy-saving intergranular corrosion testing device disclosed by the utility model has the beneficial effects of saving water resources and energy sources and ensuring the test safety.

Description

Technical Field

[0001] The utility model relates to the technical field of corrosion test devices, and particularly relates to an energy-saving intergranular corrosion test device. Background Art

[0002] Intergranular corrosion is a type of local corrosion, which is the corrosion that spreads inward along the grain boundaries of the metal. The intergranular corrosion detection test is an important means to study intergranular corrosion. Generally, the intergranular corrosion tendency of austenitic stainless steel, austenitic-ferritic stainless steel and welded specimens is inspected to evaluate their corrosion resistance. The intergranular corrosion detection test is widely used in the acceptance inspection of raw materials and welding quality of key process parts such as pipelines, stainless steel cladding, and pressure vessels in nuclear power projects and system projects.

[0003] The traditional intergranular corrosion detection test method is to place the test sample in a volumetric flask and pour in a specified amount of nitric acid solution. The solution is kept boiling for 5 cycles (each cycle is 48 hours) by heating with an electric furnace. During this period, a water-cooled condenser tube needs to be continuously used to cool the nitric acid vapor, so that it condenses and drips into the volumetric flask; after each cycle, the specimen needs to be taken out and weighed, and a new solution needs to be replaced until the end of 5 cycles. The condenser tube is connected to the tap water pipe for water supply. The tap water pipe keeps supplying water, resulting in a large waste of water, and there is a risk of water cut-off, which affects the test results.

[0004] Therefore, the existing technology needs to be improved. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that there is a large water supply and a risk of water cut-off in the prior art. The purpose is to provide an energy-saving intergranular corrosion test device, which adopts corresponding technical means and has the beneficial effects of saving water resources and energy and ensuring test safety.

[0006] The utility model is realized by the following technical solutions:

[0007] An energy-saving intergranular corrosion test device, characterized in that it includes a test main body and a cooling main body. The test main body is provided with a condenser tube. The cooling main body includes an upper water tank and a circulating water tank. The upper water tank is provided with a water inlet pipe that flows automatically due to gravity and is connected to the water inlet end of the condenser tube. The water outlet end of the condenser tube is connected to a water outlet pipe that flows automatically due to gravity and is connected to the circulating water tank. The circulating water tank is provided with a circulating water pipe connected to the upper water tank, and the circulating water pipe is provided with a pump.

[0008] In the above technical scheme, the test body is used for intergranular corrosion detection test, and the cooling body is used to cool the condenser tube to ensure the stable conduct of the intergranular corrosion detection test. During the test, nitric acid vapor enters the condenser tube. The pump pumps the cooling water in the circulating water tank to the upper water tank through the circulating water pipe. The height of the upper water tank is higher than the condenser tube. Due to the effect of gravity, the cooling water in the upper water tank automatically flows into the condenser tube through the water inlet pipe, and exchanges heat with the nitric acid vapor in the condenser tube, which helps the condensation of nitric acid vapor. The height of the condenser tube is higher than the circulating water tank. Due to the effect of gravity, the cooling water in the condenser tube automatically flows into the circulating water tank through the water outlet pipe. The cooling water after heat exchange can dissipate heat in the circulating water tank or the upper water tank. Since the cooling water is always circulating in the circulating water tank, the upper water tank and the condenser tube, the loss of water resources is small, which plays a role in saving water resources. The water supply is not affected by tap water, and even if the tap water is cut off, it will not affect the test, and the use ensures the safety and stability of the test.

[0009] Furthermore, in the present invention, the test body includes a test bottle and a heating jacket mounted on the test bottle, and the test bottle is connected to the condenser.

[0010] Furthermore, in the present invention, the test bottle is configured as a cylindrical test bottle.

[0011] Furthermore, in the present invention, the power of the heating jacket is 0.1kW-0.3kW.

[0012] Furthermore, in the utility model, a plurality of the above-mentioned condensing tubes are connected in series, the condensing tube at the head is connected to the water inlet pipe, and the condensing tube at the tail is connected to the water outlet pipe.

[0013] Furthermore, in the present invention, the water inlet end of the condenser tube is lower than the water outlet end.

[0014] Furthermore, in the utility model, the upper water tank is provided with an anti-overflow pipe, and the anti-overflow pipe is connected to the circulating water tank.

[0015] Furthermore, in the utility model, the upper water tank is provided with a water level gauge, and the water level gauge is electrically connected to the pump.

[0016] Furthermore, in the utility model, it also includes a transparent operating room for accommodating the test subject, and the transparent operating room is provided with a fixing frame connected to the condenser tube.

[0017] Furthermore, in the utility model, the transparent operating room is provided with a ventilation duct.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] 1. Save water resources: Since the cooling water is always circulating in the circulating water tank, upper water tank and condenser, there is no need to replenish water with tap water or replenish water only after working for a long time, so the loss of water resources is less. The cooling water absorbs heat in the condenser and releases heat in the circulating water tank, upper water tank and other pipes. Even if the tap water is cut off, it will not affect the test, and the use of it ensures the safety and stability of the test.

[0020] 2. Energy saving: The body of the test bottle is wrapped by a heating jacket. Compared with the traditional method of using a conical bottle and heating the bottom of the bottle, the heat utilization rate is higher and energy is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of an energy-saving intergranular corrosion testing device of the utility model.

[0023] Markings and corresponding parts names in the attached drawings: 1-test body, 101-test bottle, 102-heating jacket, 2-condenser, 3-upper water tank, 4-circulating water tank, 401-circulating water pipe, 5-water inlet pipe, 6-water outlet pipe, 7-pump, 8-water level gauge, 9-overflow prevention pipe, 10-transparent operating room, 1001-fixed bracket, 1002-ventilation duct. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0025] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the embodiments of the present utility model, it should be noted that if terms such as "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, it is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0028] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the embodiments of the present utility model, "a plurality" represents at least two.

[0030] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Embodiment

[0032] This embodiment provides an energy-saving intergranular corrosion test device, as Figure 1 shown, and the specific structure is described as follows.

[0033] Referring to Figure 1 shown, the energy-saving intergranular corrosion test device of this embodiment mainly consists of two parts: a test main body 1 and a cooling main body. Among them, the test main body 1 is used for intergranular corrosion detection tests, and the cooling main body is used to cool the condenser tube 2 to ensure the stable progress of the intergranular corrosion detection test.

[0034] Furthermore, as Figure 1As shown, it further includes a test bench, and the test main body 1 is placed on the test bench for testing. The test main body 1 is composed of two parts: a test bottle 101 and a heating jacket 102. The test bottle 101 is a cylindrical test bottle 101, which is a round-bottom flask in the prior art. The heating jacket 102 is a round-shaped electric heating jacket. The heating jacket 102 is sleeved outside the test bottle 101, and after being connected to the power supply, it heats the body of the test bottle 101. Compared with the existing combination of a conical flask and a flat electric furnace, the heating area of the heating jacket 102 for the bottle body is larger. For the same test, the flat electric furnace needs to maintain a power of 1 kw - 1.5 kw, while the heating jacket 102 only needs to maintain a power of 0.1 kw - 0.3 kw, reducing the electricity cost by more than 70%, and the energy-saving effect is very significant.

[0035] In some embodiments of this embodiment, the condenser 2 is vertically installed at the mouth of the test bottle 101, and the nitric acid vapor generated by the test bottle 101 can diffuse into the condenser 2.

[0036] Furthermore, in combination with Figure 1 As shown, the cooling main body includes two parts: an upper water tank 3 and a circulation water tank 4. Both the upper water tank 3 and the circulation water tank 4 have a water storage capacity of 350 L. The circulation water tank 4 is placed under the test bench, and the upper water tank 3 is placed on the top of the test bench. The middle position of the test bench is a transparent operation room 10, and the surrounding of the transparent operation room 10 is blocked by glass. The test bottle 101 is placed in the transparent operation room 10 for testing, which is convenient for checking the test situation at any time.

[0037] It should be noted that a horizontal fixing frame 1001 is installed in the transparent operation room 10. The fixing frame 1001 is equipped with clips for clamping the condenser 2 to make the condenser 2 work stably. Ventilation ducts 1002 are provided on the left and right sides of the transparent operation room 10 to enhance the air exchange effect.

[0038] In some embodiments of this embodiment, in combination with Figure 1 As shown, a circulation water pipe 401 is installed at the upper part of the right side surface of the upper water tank 3. The circulation water pipe 401 extends downward, and the lower end of the circulation water pipe 401 is connected to the lower part of the right side surface of the circulation water tank 4. At the same time, a pump 7 is installed on the circulation water pipe 401 for pumping the water in the circulation water tank 4 into the upper water tank 3.

[0039] Furthermore, an upper water tank 3 and a circulating water tank 4 can be used for multiple condenser tubes 2 to dissipate heat. In this embodiment, four condenser tubes 2 are connected in series. The water outlet end of one condenser tube 2 and the water inlet end of another condenser tube 2 are connected by a pipeline. The water inlet end of the condenser tube 2 at the leftmost head is connected to a water inlet pipe 5, and the water outlet end of the condenser tube 2 at the rightmost tail is connected to a water outlet pipe 6. The water inlet pipe 5 extends upward, and the upper end of the water inlet pipe 5 is connected to the lower part of the right side surface of the upper water tank 3. The water in the upper water tank 3 can flow into the condenser tube 2 by itself under the action of gravity. The water outlet pipe 6 extends downward, and the lower end of the water outlet pipe 6 is connected to the top of the circulating water tank 4. Under the action of gravity, the water in the condenser tube 2 can flow into the condenser tube 2 by itself, which is very convenient to use.

[0040] It should be noted that the water inlet end of the condenser tube 2 is at the lower part and the water outlet end is at the upper part to ensure that the cooling water can fill the condenser tube 2 and achieve a better cooling effect.

[0041] It should be noted that a water level gauge 8 is installed in the upper water tank 3. The water level gauge 8 is connected to the PLC controller by an electric wire, and the pump 7 is also connected to the PLC controller by an electric wire. When the water level gauge 8 detects that the water level in the upper water tank 3 is too low, the PLC controller controls the pump 7 to work and replenishes the cooling water in the circulating water tank 4 into the upper water tank 3.

[0042] In some embodiments of this embodiment, an overflow prevention pipe 9 is installed at the upper part of the left side surface of the upper water tank 3. The overflow prevention pipe 9 extends downward, and the lower end of the overflow prevention pipe 9 is connected to the water outlet pipe 6. Thus, the overflow prevention pipe 9 is communicated with the circulating water tank 4.

[0043] The working principle of the present utility model is as follows:

[0044] The test main body 1 is used for intergranular corrosion detection tests, and the cooling main body is used to cool the condenser tubes 2 to ensure the stable progress of the intergranular corrosion detection tests. During the test, nitric acid vapor enters the condenser tubes 2. The pump 7 pumps the cooling water in the circulating water tank 4 into the upper water tank 3 through the circulating water pipe 401. The upper water tank 3 is higher than the condenser tubes 2. Due to the action of gravity, the cooling water in the upper water tank 3 automatically flows into the condenser tubes 2 through the water inlet pipe 5 and exchanges heat with the nitric acid vapor in the condenser tubes 2, which helps to condense the nitric acid vapor. The condenser tubes 2 are higher than the circulating water tank 4. Due to the action of gravity, the cooling water in the condenser tubes 2 automatically flows into the circulating water tank 4 through the water outlet pipe 6. The heat-exchanged cooling water can dissipate heat in the circulating water tank 4 or the upper water tank 3. Since the cooling water has been circulating in the circulating water tank 4, the upper water tank 3 and the condenser tubes 2, the loss of water resources is less, which plays a role in saving water resources. The water supply is not affected by tap water. Even if the tap water is cut off, it will not affect the test, ensuring the safety and stability of the test.

[0045] In summary, the present utility model provides an energy-saving intergranular corrosion test device, which includes a test main body 1 and a cooling main body. The test main body 1 is provided with a condenser tube 2. The cooling main body includes an upper water tank 3 and a circulating water tank 4. The upper water tank 3 is provided with a water inlet pipe 5 that flows by gravity and is connected to the water inlet end of the condenser tube 2. The water outlet end of the condenser tube 2 is connected to a water outlet pipe 6 that flows by gravity and is connected to the circulating water tank 4. The circulating water tank 4 is provided with a circulating water pipe 401 connected to the upper water tank 3, and the circulating water pipe 401 is provided with a pump 7. The test main body 1 includes a test bottle 101 and a heating sleeve 102 sleeved on the test bottle 101, and the test bottle 101 is connected to the condenser tube 2. The test bottle 101 is configured as a cylindrical test bottle 101. The power of the heating sleeve 102 is 0.1 kW - 0.3 kW. Multiple condenser tubes 2 are connected in series, the condenser tube 2 at the head is connected to the water inlet pipe 5, and the condenser tube 2 at the tail is connected to the water outlet pipe 6. The water inlet end of the condenser tube 2 is lower than the water outlet end. The upper water tank 3 is provided with an overflow prevention pipe 9, and the overflow prevention pipe 9 is connected to the circulating water tank 4. The upper water tank 3 is provided with a water level gauge 8, and the water level gauge 8 is electrically connected to the pump 7. It also includes a transparent operation room 10 for accommodating the test main body 1, and the transparent operation room 10 is provided with a fixing frame 1001 connected to the condenser tube 2. The transparent operation room 10 is provided with a ventilation duct 1002. Therefore, the energy-saving intergranular corrosion test device provided by the present utility model has the beneficial effects of saving water resources and energy and ensuring test safety.

[0046] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above description is only the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An energy-saving intergranular corrosion test device, characterized in that: The invention comprises a test body (1) and a cooling body, wherein the test body (1) is provided with a condenser (2), and the cooling body comprises an upper water tank (3) and a circulating water tank (4), wherein the upper water tank (3) is provided with a water inlet pipe (5) which flows by gravity and is connected to the water inlet end of the condenser (2), and the water outlet end of the condenser (2) is connected with a water outlet pipe (6) which flows by gravity and is connected to the circulating water tank (4), and the circulating water tank (4) is provided with a circulating water pipe (401) connected to the upper water tank (3), and the circulating water pipe (401) is provided with a pump (7).

2. The energy-saving intergranular corrosion testing device according to claim 1 is characterized in that: The test body (1) comprises a test bottle (101) and a heating jacket (102) sleeved on the test bottle (101); the test bottle (101) is connected to the condenser (2).

3. The energy-saving intergranular corrosion testing device according to claim 2 is characterized in that: The test bottle (101) is configured as a cylindrical test bottle (101).

4. The energy-saving intergranular corrosion testing device according to claim 2 is characterized in that: The power of the heating jacket (102) is 0.1 kW-0.3 kW.

5. The energy-saving intergranular corrosion testing device according to claim 1 is characterized in that: A plurality of the condensing tubes (2) are connected in series, the condensing tube (2) at the head is connected to the water inlet pipe (5), and the condensing tube (2) at the tail is connected to the water outlet pipe (6).

6. The energy-saving intergranular corrosion testing device according to claim 5 is characterized in that: The water inlet end of the condenser tube (2) is lower than the water outlet end.

7. The energy-saving intergranular corrosion testing device according to claim 1 is characterized in that: The upper water tank (3) is provided with an anti-overflow pipe (9), and the anti-overflow pipe (9) is connected to the circulating water tank (4).

8. The energy-saving intergranular corrosion testing device according to claim 1 is characterized in that: The upper water tank (3) is provided with a water level gauge (8), and the water level gauge (8) is electrically connected to the pump (7).

9. The energy-saving intergranular corrosion testing device according to any one of claims 1 to 8, characterized in that: It also includes a transparent operating room (10) for accommodating the test subject (1), and the transparent operating room (10) is provided with a fixing frame (1001) connected to the condenser tube (2).

10. The energy-saving intergranular corrosion testing device according to claim 9, characterized in that: The transparent operating room (10) is provided with a ventilation duct (1002).

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