WO2019085161A1

WO2019085161A1 - Salt corrosion resistance test device

Info

Publication number: WO2019085161A1
Application number: PCT/CN2017/115615
Authority: WO
Inventors: 李承祥
Original assignee: 李承祥
Priority date: 2017-11-06
Filing date: 2017-12-12
Publication date: 2019-05-09
Also published as: CN107860704B; CN107860704A

Abstract

Disclosed is a salt corrosion resistance test device, comprising a test module. The test module comprises a test box (10) for containing a test specimen (90) and carrying out a test, a solution storage box (20) for storing a test solution, and a liquid delivery channel (30) connecting the test box (10) with the solution storage box (20) and used for delivering the test solution, wherein the solution storage box (20) is located below the test box (10), an upper end of the liquid delivery channel (30) is connected to the bottom of the test box (10) and is in communication with the test box (10), and a lower end of the liquid delivery channel (30) is connected to an upper portion of the solution storage box (20) and is in communication with the solution storage box (20); and the test box (10) and the solution storage box (20) are provided with a liquid pumping mechanism for pumping the test solution from the solution storage box (20) into the test box (10).

Description

Salt-resistant erosion test device

Technical field

The present application belongs to the field of building material testing technology, and more particularly to a salt-resistant corrosion testing device.

Background technique

In modern engineering construction, concrete durability has been paid more and more attention in various construction fields such as railway, highway, housing construction, water conservancy, electric power and port. In the concrete durability test method, according to the "Concrete Durability Test Method" (GB/T 50082-2009), the concrete sulfate resistance test is the test item with the longest detection time and the most energy required by people. The time can take up to 150 days, and it is necessary to immerse (15h), air dry (1h), dry (6h), and cool (2h) the concrete test piece every day.

The existing technology simply combines the oven, the water tank and the water pump, and a refrigeration compressor forms a concrete anti-sulfate attack test chamber. Although this equipment can realize automatic soaking, air drying and drying, However, the instrument has the following major drawbacks: 1. Single function. Only concrete anti-sulfate attack test can be carried out, and other sulfate soaking tests such as aggregate robustness cannot be carried out; 2. The instrument can only add new test pieces at specific time every day (ie cooling time per cycle), so It is likely that the test piece will be invalid due to other accidents due to other accidents; 3. Waste of resources. When the number of tests is small, the instrument can only operate at the maximum power, and the required medicines can not be reduced, which will undoubtedly cause a lot of waste of resources; 4. Pumps, heaters and other devices directly contact the test solution, increasing the fault The probability of occurrence and the error caused by excessive contact with the non-test environment; 5. The error is large. At the end of the test soaking phase, the solution will drain out of the chamber and wait for the next soak to begin refilling. During this period, the temperature of the solution will change to the same temperature as the external environment. If the external temperature is too high or too low, and the amount of the solution is large (generally about 0.3 to 0.4 m ³ ), the solution is injected into the test chamber again. When soaking, there will be ten minutes to one hour. The temperature of the solution cannot meet the test requirements, which causes a small error in the test; 6. It takes up other equipment. Two days before the test, the test piece needs to be dried in an oven at a temperature of 80 ± 5 ° C for two days, while the temperature required for other tests to dry is generally 105 ± 5 ° C, which is equivalent to two days of drying of the test piece. In this case, the oven cannot perform other tests and wastes test resources.

At the same time, in the construction of the project, as an indicator of the resistance of the reaction aggregate to sulfate corrosion, the robustness of the aggregate is also a must-check item for the type inspection of concrete aggregates in various types of projects. Although the existing equipment has soaking and drying Dry function, but the instrument has the following three shortcomings: 1. This type of instrument is not only large in size, but also can only perform one set of tests at a time, and does not have the ability to perform multiple batch tests at the same time; 2. The error is large. At the end of the test soaking phase, the solution is discharged into the solution storage tank, waiting for the next soak to start re-injection. However, because the solution storage tank does not have temperature regulation capability, the temperature of the solution changes to the temperature of the external environment during the drying of the sample. If the external temperature is too high and the solution is injected into the test chamber again to start soaking, there may be more than a dozen. The temperature of the solution in minutes or even tens of minutes cannot meet the test requirements (4h per aggregate soaking time), causing a large error in the test; because the solution used in the test is a saturated solution, if the temperature of the solution is lowered, the solution will be stored. Crystallization inside the box will not only cause the problem of clogging of the pipeline by crystallization, but also serious consequences of a large error in the test due to a decrease in the concentration of the solution after crystallization; 3. It is prone to instrument failure. Since the pumps, water pipes, heating pipes, cooling pipes and the like are directly in contact with the saturated solution of sodium sulfate, these devices are prone to failures caused by crystallization and corrosion of the effluent, and even the instruments are scrapped.

Similarly, in the robust test of ballast, rock, and rock, there is no equipment with fully automatic, multi-batch simultaneous testing capabilities.

technical problem

The purpose of the present application is to provide a salt-resistant corrosion test apparatus, which solves the technical problem that the salt solution in the prior art is easily crystallized to cause blockage of the pipeline and causes the entire test to fail, and the salt solution is difficult to crystallize in the pipeline. Ability to perform a variety of tests.

Technical solution

In order to achieve the above object, the technical solution adopted by the present application is to provide a salt-resistant erosion test device, including a test module, which comprises a test box for holding a test piece and performing test, and for storing the test solution. a solution tank and an infusion channel connecting the test chamber and the solution tank and for transporting a test solution; the solution tank is located below the test chamber, and an upper end of the infusion channel is connected to a bottom of the test chamber and Connecting the test chamber, the lower end of the infusion channel is connected to an upper part of the test box and communicates with the test box; the test box and the solution storage tank are provided with a test solution for pressing the solution solution in the solution tank The hydraulic mechanism into the test chamber.

In one embodiment, in the foregoing salt-resistant erosion test device, the lower end of the infusion channel includes an infusion tube, and the infusion tube is located inside the solution tank and extends to a middle portion or a lower portion of the solution tank; The liquid pressure mechanism includes a second intake pipe located on the solution tank and used to pressurize gas into the solution tank, and a first flat pressure structure for ensuring that the gas pressure in the test chamber is within a certain range.

In one embodiment, in the foregoing salt-resistant erosion test device, the lower end of the infusion channel includes an infusion tube, and the infusion tube is located inside the solution tank and extends to a middle portion or a lower portion of the solution tank; The liquid pressure mechanism includes a first exhaust pipe located on the test chamber and used for pumping gas in the test chamber, and a second flat pressure structure for ensuring that the gas pressure in the solution tank is within a certain range.

In one embodiment, in the foregoing salt-resistant corrosion test apparatus, the liquid pressure mechanism includes a piston located inside the solution tank and is located on the test box for ensuring that the gas pressure in the test chamber is within a certain range The third flat pressure structure.

In one embodiment, in the foregoing salt-resistant erosion test apparatus, the liquid-pressing mechanism includes a balloon or an air bag located inside the solution tank and a tone for providing positive or negative pressure to the test chamber. Pressure structure.

In one embodiment, in the foregoing salt-resistant erosion test device, the infusion channel is further provided with a first valve, in the direction of the infusion channel along the test box to the solution tank, after the first valve An evacuation mechanism for evacuating the test solution accumulated in the conduit after the first valve is closed is also provided.

In one embodiment, in the foregoing salt-resistant erosion test device, the emptying mechanism includes an infusion funnel at a lower end of the infusion channel, and the infusion funnel has a small infusion port connected to the infusion tube, and the infusion tube extends to the In the middle or lower part of the solution tank, the large mouth end of the infusion funnel is sealingly connected with the upper portion of the solution tank to form an enlarged cavity, and the lower end of the infusion channel communicates with the enlarged cavity, and the side wall of the inflated cavity is further provided with an intake passage a second valve is disposed on the intake passage.

In one embodiment, in the foregoing salt-resistant corrosion test apparatus, the test chamber is provided with a liquid level sensor and a temperature sensor, and the solution tank is provided with a temperature sensor and a pH probe.

In one embodiment, in the foregoing salt-resistant erosion test apparatus, the test box is provided with a first intake pipe for gas entering for air drying, and the test box is provided with a dryer, and the solution is stored. The tank is further provided with a heater and a second intake pipe for adjusting the temperature of the test solution to enter the solution tank.

In one embodiment, the foregoing salt-resistant erosion test apparatus includes a plurality of test modules and a fluid temperature adjustment device for tempering a gas for air drying and adjusting a solution temperature, the fluid temperature adjustment device including a cavity for accommodating the chilled liquid and a temperature regulating pipe for passing the gas in the cavity, the temperature regulating pipe is provided with a regulating valve for adjusting the amount of intake air, the temperature regulating pipe and the first intake pipe And the second intake pipe is connected by a pipeline.

In one embodiment, the foregoing salt-resistant erosion test apparatus further includes an air pump, a gas storage tank, and a temperature regulating device for cooling the refrigerant liquid, wherein the air pump is in communication with the gas storage tank, The gas storage tank is in communication with the temperature regulating pipe.

In one embodiment, the aforementioned salt-resistant erosion test apparatus further includes a control cabinet and a computer.

In one embodiment, in the foregoing salt-resistant corrosion test apparatus, the test module further includes a support frame for supporting the test box and the solution tank, the support frame and the test box A first drawer structure for translating the test chamber is provided, and a second drawer structure for translating the solution tank is provided between the support frame and the solution tank.

In one embodiment, in the foregoing salt-resistant corrosion test apparatus, the test box is further provided with a sample holder for supporting the test piece, and the test piece frame is provided with a connection for receiving the test piece. Slag tray.

Beneficial effect

The whole device of the present application only has the test box and the solution tank and the infusion channel contact test solution, and the length of the infusion channel is shortened by reducing the length of the infusion channel by the test box and the solution tank, and the infusion channel in the lateral or oblique direction is reduced. The amount of the test solution is prevented from clogging in the side wall of the infusion channel after crystallization of the test solution; at the same time, the test solution is immersed in the test piece by the liquid pressure mechanism instead of the pumping mechanism, thereby avoiding the test solution against the pump and other equipment. Corrosion; In addition, when the test solution flows into or out of the test chamber through the infusion channel, the side wall of the infusion channel is flushed to further prevent the deposition of the test solution from crystallization and causing blockage on the side wall of the infusion channel. The application can be used in various tests requiring immersion such as anti-sulfate attack test and aggregate test of aggregate, and is simple and convenient to use.

DRAWINGS

1 is a schematic structural view of a salt-resistant corrosion test apparatus according to Embodiment 1 of the present application;

2 is a schematic structural view of a test module of a salt-resistant corrosion test apparatus according to Embodiment 2 of the present application;

3 is a schematic structural view of a test module of a salt-resistant corrosion test apparatus according to Embodiment 3 of the present application;

4 is a schematic structural view of a fluid temperature regulating device of a salt-resistant corrosion test apparatus according to Embodiment 1 of the present application.

Embodiment of the present application

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

It is to be noted that when an element is referred to as being "fixed" or "in" another element, it can be directly on the other element or indirectly. 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.

It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top" The orientation or positional relationship of the "bottom", "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present application and simplified description, and does not indicate or imply the indicated device. Or the components must have a particular orientation, constructed and operated in a particular orientation, and thus are not to be construed as limiting.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

Please refer to FIG. 1 to FIG. 3 together. A salt-resistant corrosion test apparatus provided by the present application will now be described. The salt-resistant corrosion test apparatus includes a test module including a test box 10 for holding a test piece 90 and testing, a solution storage tank 20 for storing a test solution, and a connection of the test box 10 and The solution tank 20 is used to transport the infusion channel 30 of the test solution; the solution tank 20 is located below the test chamber 10, and the upper end of the infusion channel 30 is connected to the bottom of the test box 10 and communicates with the test. a tank 10, a lower end of the infusion channel 30 is connected to an upper portion of the test chamber 10 and communicates with the test box 10; the test chamber 10 and the solution tank 20 are provided with a solution tank 20 The test solution is pressed into the pressure medium of the test chamber 10. Preferably, the test box 10 and the solution tank 20 are provided with fireproof and heat insulating cotton with heat preservation, heat insulation and fireproof functions.

In use, the liquid pressure mechanism causes the test solution to enter the solution storage tank 20 from the test chamber 10 via the infusion channel 30, and immerses the test piece 90; after the immersion time reaches the standard, the pressure liquid mechanism is relaxed, and the test solution can be directly passed from the test box 10 by gravity. The infusion channel 30 flows back to the solution reservoir 20.

The salt-resistant corrosion test device provided by the present application solves the technical problem that the salt solution in the prior art is easily crystallized and causes the pipeline to be blocked, thereby causing the entire test to fail. The salt solution is difficult to crystallize in the pipeline and can be variously The characteristics of the test. Compared with the prior art, only the test box 10 and the solution tank 20 and the infusion channel 30 are in contact with the test solution, and the length of the infusion channel 30 is shortened as much as possible by placing the test box 10 and the solution tank 20 up and down, and the infusion channel is reduced. The rotation angle of 30 and the number of infusion channels 30 in the lateral or oblique direction prevent the precipitation of the test solution from crystallization on the side wall of the infusion channel 30, and the test solution is placed in the test chamber 10 by the liquid pressure mechanism instead of the pumping mechanism. The test piece 90 is immersed to avoid corrosion of the test solution to other equipment such as a water pump; in addition, when the test solution flows into or out of the test chamber 10 through the infusion channel 30, the side wall of the infusion channel 30 is flushed to further avoid the test solution. The precipitate after crystallization causes clogging on the side wall of the infusion channel 30. The application can be used in various tests requiring immersion such as anti-sulfate attack test and aggregate test of aggregate, and is simple and convenient to use.

In one embodiment, referring to FIG. 2, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the lower end of the infusion channel 30 includes an infusion tube 31, and the infusion tube 31 is located in the solution storage. Inside the tank 20 and extending to a middle or a lower portion of the solution tank 20; the liquid pressure mechanism includes a second intake pipe located on the solution tank 20 and used to pressurize gas into the solution tank 20 21 and a first flat-press structure for ensuring that the gas pressure in the test chamber 10 is within a certain range. Specifically, the first flat pressing structure may be the first exhaust pipe 12 on the test box 10, or may be a structure such as a balloon or a hood.

In one embodiment, referring to FIG. 2, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the lower end of the infusion channel 30 includes an infusion tube 31, and the infusion tube 31 is located in the solution storage. Inside the tank 20 and extending to a middle or a lower portion of the solution tank 20; the liquid pressure mechanism includes a first exhaust pipe 12 located on the test chamber 10 for pumping gas in the test chamber 10 and A second flat-press structure for ensuring that the gas pressure in the solution tank 20 is within a certain range. Specifically, the second flat pressing structure may be the second exhaust pipe 22, or may be a structure such as a balloon or a hood.

In one embodiment, referring to FIG. 3, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the liquid pressure mechanism includes a piston 23 located inside the solution tank 20 and located at the The third flat-press structure of the test chamber 10 for ensuring that the air pressure in the test chamber 10 is within a certain range. Specifically, the third flat pressing structure may be the first intake pipe 11 and the first exhaust pipe 12 on the test box 10, or may be a structure such as a balloon or a hood.

In one embodiment, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the fluid pressure mechanism includes a balloon or an air bag located inside the solution tank 20 and used for the test chamber A pressure regulating structure with positive or negative pressure is provided within 10. In a specific embodiment of the present application, when used, a positive pressure is provided to the inside of the test chamber 10 through the pressure regulating structure, the gas in the balloon or the air bag is compressed, the volume is reduced, and the test solution in the test chamber 10 is pressed into the solution. In the tank 20, after the pressure regulating structure releases the pressure, the test solution enters the test chamber 10 from the solution tank 20 again. In another specific embodiment of the present application, the pressure is applied to the test chamber 10 by the pressure regulating structure to provide a negative pressure, so that the volume of the balloon or the air bag is increased, and the test solution in the solution tank 20 is further introduced into the test box 10; After the pressure regulating structure releases the pressure, the test solution enters the solution tank 20 again from the test chamber 10.

In one embodiment, please refer to FIG. 2 and FIG. 3 together. As a specific implementation manner of the salt-resistant erosion test apparatus provided by the present application, the infusion channel 30 is further provided with a first valve 32. The infusion channel 30 is in the direction of the test chamber 10 to the solution tank 20, and the first valve 32 is further provided with an evacuation mechanism for evacuating the test solution accumulated in the pipe after the first valve 32 is closed. The test solution is prevented from crystallizing on the infusion channel 30.

In one embodiment, referring to FIG. 2, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the evacuation mechanism includes an infusion funnel 33 at a lower end of the infusion channel 30, the infusion solution An infusion tube 31 is connected to the small end of the funnel 33. The infusion tube 31 extends to the middle or the lower portion of the solution tank 20. The large end of the infusion funnel 33 is sealingly connected with the upper portion of the solution tank 20 to form an enlarged chamber 34. The lower end of the infusion channel 30 communicates with the inflated cavity 34. The side wall of the inflated cavity 34 is further provided with an intake passage 35, and the intake passage 35 is provided with a second valve 36. The inflated cavity 34 formed by the infusion funnel 33 can facilitate the evacuation of the test solution in the infusion channel 30 through the inlet passage 35 on the one hand, and the infusion of the infusion channel 30 and the infusion tube 31 on the other hand, thereby preventing crystal aggregation of the test solution. Prevent pipe blockage.

In one embodiment, please refer to FIG. 2 and FIG. 3 together. As a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the test chamber 10 is provided with a liquid level sensor 41 and a temperature sensor 42. The solution tank 20 is provided with a temperature sensor 42 and a pH probe 43. The liquid level sensor 41 is preferably higher than the test piece 90 by three centimeters, so that when the test solution in the test chamber 10 rises to the liquid level sensor 41, the liquid level continues to rise and the difficulty is avoided. Judging the liquid level position causes the test solution to overflow. The temperature sensor 42 is used to measure the temperature in the test chamber 10 and the solution tank 20 and the temperature of the test solution to facilitate temperature control throughout the test. The pH probe 43 is used to measure the pH of the test solution in order to ensure the accuracy of the test.

In one embodiment, referring to FIG. 2, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the test chamber 10 is provided with a gas for air drying and adjusting the temperature of the solution into the a first intake pipe 11 of the test box 10, the test box 10 is provided with a dryer 51, and the solution storage tank 20 is also provided with a heater 52 and a gas for adjusting the temperature of the solution to enter the solution storage The second intake pipe 21 of the tank 20. The dryer 51 is used for drying the test piece 90 and adjusting the temperature of the solution, and the heater 52 is used together with the low-temperature air blown from the second intake port 21 to adjust the temperature of the test solution to ensure that it is within a reasonable range. In order to achieve the predetermined temperature before the test solution enters the test chamber 10, the accuracy of the test is improved. When the dryer 51 and the heater 52 are located inside the test chamber 10 and the solution tank 20, they need to be insulated from the test solution to avoid corrosion; when the dryer 51 and the heater 52 are located outside the test chamber 10 and the solution tank 20, It is preferably located at the bottom of the test chamber 10 and the solution tank 20.

In one embodiment, please refer to FIG. 1 and FIG. 4 together as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, including several test modules and a gas for air drying and adjusting the temperature of the solution. a temperature-regulating fluid temperature regulating device 60, the fluid temperature regulating device 60 includes a cavity 61 for containing the freezing liquid, and a temperature regulating pipe 62 for passing the gas in the cavity 61, the temperature regulating pipe A regulating valve 63 for adjusting the amount of intake air is provided on the 62, and the temperature regulating duct 62 is connected to the first intake pipe 11 and the second intake pipe 21 by a pipe. The modular design of several test modules allows the instrument to operate not only the required number of test modules when the test is less, but also to accept new tests or even temporarily add a small number of test modules for testing when needed. Further, a plurality of tests can be performed simultaneously without affecting each other, and the test success rate is high.

As shown in FIG. 4, in a specific embodiment of the present application, the fluid temperature regulating device 60 includes a cavity 61 and a temperature regulating pipe 62 located at two sides of the cavity 61. The cavity 61 is further provided with a cavity for the cavity. 61 is a heat exchange tube 69 for temperature regulation, and the heat exchange tube 69 is connected to a temperature control device 66 for cooling or heating.

In one embodiment, referring to FIG. 1 , as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, an air pump 64, a gas storage tank 65, and a temperature regulation for cooling the refrigerant liquid are further included. The device 66 is in communication with the air reservoir 65, and the air reservoir 65 is in communication with the temperature regulating conduit 62.

In one embodiment, referring to FIG. 1 , as a specific implementation manner of the salt-resistant erosion test apparatus provided by the present application, a control cabinet 67 and a computer 68 are further disposed on the pipeline, and the above-mentioned pipelines are respectively provided with an electronically controlled valve. The valve type mechanism is also an electronic control device, and the above-mentioned electronic control device, sensor and probe are connected with the control cabinet 67 and the computer 68, so that the entire test flow can be automatically controlled by the analysis and regulation of the computer 68.

In one embodiment, please refer to FIG. 2 and FIG. 3 together, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the test module further includes a support box 10 and a support frame 70 of the solution tank 20, a first drawer structure 71 for translating the test box 10 between the support frame 70 and the test box 10, the support frame 70 and the solution A second drawer structure 72 for translating the solution tank 20 is provided between the tanks 20.

In one embodiment, please refer to FIG. 2 and FIG. 3 together as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application. The test box 10 is further provided with a support member 90 for supporting the test piece 90. The sample holder 80 is provided with a slag tray 81 for receiving the slag of the test piece.

Please refer to FIG. 1 and FIG. 4 together. A salt-resistant corrosion test apparatus provided by the present application will now be described. The salt-resistant erosion test apparatus includes a fluid temperature adjustment device 60 for tempering at least two fluids, the fluid temperature adjustment device 60 including a cavity 61 for accommodating heat exchange fluid and at least two The two temperature control pipes 62 are different in length and are located in the cavity 61. The temperature control pipe 62 is provided with a regulating valve 63 for adjusting the flow rate.

The salt-resistant corrosion test apparatus provided by the present application exchanges heat with the heat exchange liquid when the fluid is introduced into the at least two temperature control pipes 62, respectively, compared with the prior art. The different temperature regulating pipes 62 have different lengths, the fluids of the same flow rate have different heat exchange time with the heat exchange liquid, and the heat exchange amounts are different, and the regulating valve 63 controls the flow rate of the fluid, and the different temperature regulating pipes 62 and the regulating valves 63 Used together, it can output fluids of different temperatures for testing. The present application solves the technical problem that the same set of test devices existing in the prior art cannot simultaneously provide fluids of different temperatures, can not adjust the temperature of multiple sets or multiple test environments, and has a simple overall structure, and can provide fluids with different temperatures to facilitate. Simultaneously carry out the characteristics of multiple groups or multiple tests.

In one embodiment, referring to FIG. 4, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, a heat exchange tube 69 located in the cavity 61 is further included and used for the replacement. A thermostatic refrigeration or heating thermostat 66, the thermostat 66 is in communication with the heat exchange tube 69.

As shown in FIG. 4, in a specific embodiment of the present application, the fluid temperature regulating device 60 includes a cavity 61 and a temperature regulating pipe 62 located at two sides of the cavity 61. The cavity 61 is further provided with a cavity for the cavity. 61 is a heat exchange pipe 69 for temperature regulation, and the heat exchange pipe 69 is connected to a temperature control device 66 for cooling or heating.

In one embodiment, referring to FIG. 1 , as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the fluid is a gas, and the salt-resistant erosion test apparatus further includes an air pump 64 and a gas storage. The tank 65 is in communication with the air tank 65, and the air tank 65 is in communication with the temperature regulating duct 62, respectively.

In one embodiment, referring to FIG. 1 and FIG. 2 and FIG. 3, as one embodiment of the salt-resistant erosion test apparatus provided by the present application, the salt-resistant erosion test apparatus further includes a plurality of tests for performing the test. The test module is provided with an air inlet into which the gas enters, and the temperature regulating pipe 62 is in communication with the air inlet. The gas passing through the fluid temperature regulating device 60 may be a gas for pushing and tempering the test solution. The air inlet may be the second intake pipe 21, the first intake pipe 11, or the first An intake pipe 11 and a second intake pipe 21.

In one embodiment, please refer to FIG. 2 and FIG. 3 together as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the test module includes a test for holding the test piece 90 and performing the test. a tank 10, a solution tank 20 for storing a test solution, and an infusion channel 30 connecting the test chamber 10 and the solution tank 20 and for transporting a test solution; the solution tank 20 is located in the test chamber 10. Below, the upper end of the infusion channel 30 is connected to the bottom of the test chamber 10 and communicates with the test box 10, the lower end of the infusion channel 30 is connected to the upper part of the test box 10 and communicates with the test box 10; 10 and the solution tank 20 are provided with a liquid pressure mechanism for pressing the test solution in the solution tank 20 into the test chamber 10. Preferably, the test box 10 and the solution tank 20 are provided with fireproof and heat insulating cotton with heat preservation, heat insulation and fireproof functions.

In one embodiment, referring to FIG. 3, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the liquid pressure mechanism includes a piston 23 located inside the solution tank 20 and located at the The third flat-press structure of the test chamber 10 for ensuring that the air pressure in the test chamber 10 is within a certain range. Specifically, the third flat pressing structure may be an air inlet port and a first exhaust pipe 12 on the test box 10, or may be a structure such as a balloon or a hood.

In use, the gas passing through the fluid temperature regulating device 60 may be a gas for pushing and tempering the test solution, and the air inlet may be the second intake pipe 21 or the first intake pipe 11, and It may be the first intake pipe 11 and the second intake pipe 21. When the air inlet is the first intake pipe 11 and the second intake pipe 21, the test solution in the solution tank 20 is cooled by the cold air entering through the second intake pipe 21, and is heated by the internal heater 52; the test box 10 contains the test After the solution, the test solution in the test chamber 10 is cooled by the cold air entering through the first intake pipe 11, and is heated by the internal dryer 51.

In one embodiment, please refer to FIG. 2 and FIG. 3 together. As a specific implementation manner of the salt-resistant erosion test apparatus provided by the present application, the infusion channel 30 is further provided with a first valve 32. The infusion channel 30 is in the direction of the test chamber 10 to the solution tank 20, and the first valve 32 is further provided with an evacuation mechanism for draining the test solution accumulated after the first valve 32 to avoid the test solution. Crystallization on the infusion channel 30.

In one embodiment, please refer to FIG. 2 and FIG. 3 together, as a specific embodiment of the salt-resistant erosion test apparatus provided by the present application, the test box 10 is provided with a hole for entering the gas. In the tuyere, the test chamber 10 is provided with a dryer 51, and the solution tank 20 is also provided with a heater 52 and an air inlet passage. The dryer 51 is used for drying the test piece 90 and adjusting the temperature of the solution, and the heater 52 is used together with the low-temperature air blown from the air inlet 21 to adjust the temperature of the test solution to ensure that it is within a reasonable range. To improve the accuracy of the test. When the dryer 51 and the heater 52 are located inside the test chamber 10 and the solution tank 20, they need to be insulated from the test solution to avoid corrosion; when the dryer 51 and the heater 52 are located outside the test chamber 10 and the solution tank 20, It is preferably located at the bottom of the test chamber 10 and the solution tank 20.

In a specific embodiment of the present application, the salt-resistant corrosion test apparatus includes a computer, a control cabinet 67, a refrigeration compressor, a fluid temperature regulating device 60 having a plurality of temperature regulating pipes 62 therein, a gas pump 64, and a gas storage tank. 65, and several test modules. The compressed air output from the gas storage tank 65 enters the different temperature regulating pipes 62, and the air temperature adjusting device 60 simultaneously adjusts the temperature of the air and sends it to the test module for different tests (concrete resistance to sulfate attack and aggregate, etc.) The robustness test of the material provides low temperature air and power. The test module includes a test chamber 10 with a lid and a solution tank 20 with a lid, and any number of test modules are added as needed, provided that the performance and power of other equipment are sufficient. This application allows each device to be individually connected to each test module, thereby individually controlling each test module. The present application collects the water level, temperature and pH value of the solution, and uses the low-temperature compressed air and the heater 52 located in the test box or outside the experiment box to achieve immersion, air drying, drying and cooling of the sample (aggregate The steps are: soaking, drying and cooling), and at the same time, the contact between the auxiliary facilities such as the water pump and the heater and the sulphate solution is minimized, thereby reducing the probability of occurrence of instrument failure and reducing the contact non-test environment due to excessive solution. And the resulting error. This application uses low temperature compressed air test as a means of cooling test, in order to ensure that the instrument can simultaneously carry out concrete (required test temperature is 25 ~ 30 ° C) and aggregate (required test temperature is 20 ~ 25 ° C) sodium sulphate solution immersion test, especially A fluid temperature regulating device 60 is designed. The fluid temperature regulating device 60 achieves the purpose of simultaneously outputting compressed air of two different temperatures by using different temperature regulating pipes 62 and controlling the different intake amounts of the temperature regulating pipes 62 by the regulating valve 63. The solution tank 20 is also provided with a refrigeration and heating system to allow the solution to reach the test temperature prior to initiating soaking, avoiding the resulting test error. The present application completes the flow of the solution between the test chamber and the solution storage tank by means of secondary liquid supply. This method effectively solves the problems of intra-tube effusion and intra-tube crystallization which often occur in the conventional liquid-conducting method.

The design of the present application is novel, versatile, and the modular design is preferred, so that the instrument does not need to be used in an oven, and the instrument can not only run a required number of test modules when the test is small, but also can be accepted at any time when needed. The new test even temporarily added a small number of test modules for testing. By setting the fluid temperature regulating device 60 and combining the modular design, the present invention enables the instrument to simultaneously perform the concrete sulfate resistance test and the robustness test of materials such as aggregates, and realizes independent operation of each test without affecting each other. At the same time, using air as the medium to provide the necessary power and low temperature air for the test, effectively avoiding too much auxiliary equipment to contact the test solution, greatly reducing the failure rate of the instrument. In addition, the original secondary liquid supply method is used, which effectively solves the problem of liquid accumulation in the tube and greatly reduces the failure rate of the instrument.

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection of the present application. Within the scope.

Claims

A salt-resistant erosion test device, comprising: a test module,

The test module includes a test chamber for holding a test piece and performing test, a solution storage tank for storing the test solution, and an infusion channel connecting the test box and the solution storage tank and for conveying the test solution;

The solution tank is located below the test box, the upper end of the infusion channel is connected to the bottom of the test box and communicates with the test box, and the lower end of the infusion channel is connected to the upper part of the test box and communicates with the test box ;

The test chamber and the solution tank are provided with a liquid pressure mechanism for pressing a test solution in the solution tank into the test chamber.
The salt-resistant erosion test apparatus according to claim 1, wherein the lower end of the infusion channel comprises an infusion tube, and the infusion tube is located inside the solution tank and extends to the middle of the solution tank or a lower portion; the liquid pressure mechanism includes a second intake pipe located on the solution tank and used to pressurize gas into the solution tank; and a first flat pressure for ensuring a gas pressure in the test chamber within a certain range structure.
The salt-resistant erosion test apparatus according to claim 1, wherein the lower end of the infusion channel comprises an infusion tube, and the infusion tube is located inside the solution tank and extends to the middle of the solution tank or a lower portion; the liquid pressure mechanism includes a first exhaust pipe located on the test chamber and used for pumping gas in the test chamber, and a second flat pressure structure for ensuring a gas pressure in the solution tank in a certain range .
A salt-resistant erosion test apparatus according to claim 1, wherein said liquid pressure mechanism comprises a piston located inside said solution tank and located on said test chamber for ensuring that air pressure in said test chamber is A range of third flat compression structures.
A salt-resistant erosion test apparatus according to claim 1, wherein said liquid pressure mechanism comprises a balloon or an air bag located inside said solution tank and for supplying a positive or negative pressure to said test chamber Pressure regulating structure.
The salt-resistant erosion test apparatus according to any one of claims 1 to 5, characterized in that: the infusion channel is further provided with a first valve in the direction of the infusion channel along the test chamber to the solution tank Above, the first valve is further provided with an emptying mechanism for evacuating the test solution accumulated in the pipe after the first valve is closed.
The salt-resistant erosion test apparatus according to claim 6, wherein the emptying mechanism comprises an infusion funnel at a lower end of the infusion channel, and the infusion funnel has a small infusion port connected with an infusion tube, and the infusion tube extends To the middle or lower portion of the solution tank, the large mouth end of the infusion funnel is sealingly connected with the upper portion of the solution tank to form an enlarged cavity, and the lower end of the infusion channel communicates with the enlarged cavity, and the side wall of the inflated cavity is further provided with a gas passage, and a second valve is disposed on the intake passage.
The salt-resistant corrosion test apparatus according to claim 1, wherein the test chamber is provided with a liquid level sensor and a temperature sensor, and the solution tank is provided with a temperature sensor and a pH probe.
The salt-resistant corrosion test apparatus according to claim 1, wherein said test box is provided with a first intake pipe for allowing air to be dried and adjusting a temperature of the test solution to enter said test chamber, said test A dryer is arranged on the tank; the solution tank is further provided with a heater and a second intake pipe for adjusting the temperature of the test solution to enter the solution tank.
The salt-resistant erosion test apparatus according to claim 9, comprising: a plurality of test modules and a fluid temperature control device for tempering the air for air drying and adjusting the temperature of the solution, the fluid temperature control device comprising a cavity for accommodating the chilled liquid and a temperature regulating pipe for passing the gas in the cavity, the temperature regulating pipe is provided with a regulating valve for adjusting the amount of intake air, the temperature regulating pipe and the first The intake pipe and the second intake pipe are connected by a pipe.
The salt-resistant erosion test apparatus according to claim 10, further comprising: an air pump, a gas storage tank, and a temperature control device for cooling the refrigerant liquid, wherein the air pump is in communication with the gas storage tank, The gas storage tank is in communication with the temperature regulating pipe.
The salt-resistant erosion test apparatus according to claim 10, further comprising a control cabinet and a computer.
A salt-resistant erosion test apparatus according to claim 1, wherein said test module further comprises a support frame for supporting said test chamber and said solution tank, said support frame and said test A first drawer structure for translating the test chamber is provided between the boxes, and a second drawer structure for translating the solution tank is provided between the support frame and the solution tank.
The salt-resistant corrosion test apparatus according to claim 1, wherein the test box is further provided with a test piece holder for supporting the test piece, and the test piece frame is provided with a test piece for receiving the test piece. Slag tray.