Sodium sulfate solution soaking loss rate test box for railway ballast

Abstract

The utility model discloses a railway ballast sodium sulfate solution soaking loss rate test box which comprises an experiment box body, an inner support frame is fixedly connected in the experiment box body, a plurality of test net baskets filled with railway ballast are arranged at the top of the inner support frame, and a plurality of through holes are formed in the test net baskets; the railway ballast sodium sulfate solution soaking loss rate test box further comprises a first liquid storage box body for supplying sodium sulfate liquid and a second liquid storage box body for supplying clear water liquid; the railway ballast sodium sulfate solution soaking loss rate test box further comprises a liquid path system for circulating pump liquid between the test box body and the first liquid storage box body and between the test box body and the second liquid storage box body, and the liquid path system is used for pumping sodium sulfate liquid in the first liquid storage box body into the test box body to soak and test railway ballast. And clean water in the second liquid storage box body is pumped into the second liquid storage box body to clean railway ballast. According to the structure, the test operation steps are greatly simplified, and the test accuracy is improved.

Description

Technical Field

[0001] This utility model belongs to the field of railway ballast testing technology, and in particular relates to a railway ballast sodium sulfate solution immersion loss rate test chamber. Background Technology

[0002] The railway ballast sodium sulfate solution immersion loss rate test measures the mass change of crushed stone ballast before and after immersion in sodium sulfate solution, assesses its resistance to weathering and frost cracking, thereby ensuring the quality of railway crushed stone ballast and guaranteeing the safe and smooth operation of railway transportation.

[0003] Therefore, in actual work, it is necessary to test railway ballast. This is done by immersing the ballast in a sodium sulfate solution to test the change in its quality. For example, after immersion testing, substandard ballast will show a high degree of corrosion and a relatively high weight loss rate.

[0004] The current testing method involves placing the crushed ballast in a wire basket and immersing it in a container filled with sodium sulfate solution. After the testing time is up, the basket is lifted, dried, weighed, and then immersed again. This cycle is repeated multiple times to calculate the weight loss rate of the crushed ballast. However, this method has drawbacks: it is cumbersome to operate, requiring operators to repeatedly lift the basket, dry, and immerse it. During this process, the corroded crushed ballast is more easily eroded by the fluid, making the test inaccurate in reflecting the corrosion of the crushed ballast in a static state. In particular, the repeated immersion and lifting of the basket during the experiment causes the sodium sulfate solution to repeatedly scour the crushed ballast (a large amount of sodium sulfate solution flows down from the mesh of the basket the moment it is lifted above the liquid surface, creating a fluid scouring effect). Therefore, although this testing method is simple in practice, it cannot simulate the corrosion of crushed ballast in a static state, resulting in a relatively high error rate. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide a test chamber for the loss rate of railway ballast immersed in sodium sulfate solution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A test chamber for the loss rate of railway ballast soaked in sodium sulfate solution includes a test chamber body, an inner support frame fixedly connected inside the test chamber body, and a number of test baskets containing railway ballast on the top of the inner support frame, with a number of through holes on the test baskets.

[0008] The railway ballast sodium sulfate solution immersion loss rate test chamber also includes a first liquid storage tank for supplying sodium sulfate liquid and a second liquid storage tank for supplying water liquid;

[0009] The railway ballast sodium sulfate solution immersion loss rate test chamber also includes a liquid circuit system for circulating liquid between the test chamber and the first and second liquid storage tanks. The liquid circuit system is used to pump the sodium sulfate liquid in the first liquid storage tank into the test chamber to immerse and test the railway ballast, and to pump the clean water in the second liquid storage tank into the second liquid storage tank to clean the railway ballast.

[0010] Preferably, the railway ballast sodium sulfate solution immersion loss rate test chamber further includes a control cabinet, which is fixedly installed on the side wall of one side of the test chamber.

[0011] Preferably, the bottom of the experimental chamber is fixedly connected to a placement chamber for placing the first liquid storage tank and the second liquid storage tank.

[0012] Preferably, the inner support frame includes transversely distributed horizontal frames and longitudinal frames consisting of several vertical horizontal frames.

[0013] Preferably, the upper part of the side wall of the experimental chamber is provided with a liquid inlet, and the lower part of the side wall of the experimental chamber is provided with a liquid outlet.

[0014] Preferably, the liquid circuit system includes a water pump, the water pump inlet is connected to a main water pipe, and the main water pipe is respectively connected to a first suction pipe and a second suction pipe for suctioning liquid from the first liquid storage tank and the second liquid storage tank.

[0015] The water pump's outlet is connected to a pump pipe, which is connected to the inlet.

[0016] Preferably, the height of the liquid outlet is higher than the height of the first liquid storage tank and the second liquid storage tank;

[0017] The liquid circuit system also includes a drain pipe connected to the liquid outlet, and the drain pipe is connected to a first row of pipes and a second row of pipes respectively.

[0018] The first row of pipes and the second row of pipes are located in the first liquid storage tank and the second liquid storage tank, respectively.

[0019] Preferably, filters are connected to the pump drain pipe and the drain pipe respectively;

[0020] The upper ends of the first and second liquid storage tanks are respectively fixedly connected with filter screens, and the first and second pipes are located above the filter screens.

[0021] Preferably, valves are installed on the first row of pipes and the second row of pipes respectively;

[0022] Valves are installed on the first suction tube and the second suction tube respectively.

[0023] This utility model has the following beneficial effects:

[0024] 1. During the testing process, the sodium sulfate solution in the first storage tank is automatically pumped into the experimental chamber, and after the test, the sodium sulfate solution in the experimental chamber is pumped back to the first storage tank. Similarly, clean water is pumped into and out of the experimental chamber and into the second storage tank. The aforementioned railway ballast sodium sulfate solution immersion loss rate test chamber also includes a liquid circuit system for circulating the liquid between the experimental chamber and the first and second storage tanks. This method of testing railway ballast by static immersion not only simplifies the testing method and operation but also greatly improves testing efficiency.

[0025] Meanwhile, this testing method is highly accurate and simulates the corrosion of railway ballast under static conditions.

[0026] 2. By improving the liquid circuit system, the sodium sulfate solution for testing and the clean water for rinsing can be automatically pumped to soak the test basket during the testing process, which further improves the efficiency of the test, reduces the difficulty of the test, and simplifies the test operation steps. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the dispersed structure in an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of the liquid circuit system in an embodiment of the present invention.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Example 1

[0036] like Figure 1-3 As shown, a test chamber for the loss rate of railway ballast immersed in sodium sulfate solution includes a test chamber 1, which is a sealed chamber, and a cover 11 is installed on the top of the chamber in the existing manner.

[0037] An internal support frame is fixedly connected inside the aforementioned experimental chamber 1. The internal support frame consists of two horizontal frames 31 arranged on the front and rear sides and distributed laterally, as well as a longitudinal frame 32 consisting of several vertical horizontal frames 31. The internal support frame is fixed to the inner wall of the experimental chamber 1 and is spaced apart from the bottom of the experimental chamber 1.

[0038] The top of the aforementioned inner support frame is equipped with several test baskets 2 containing railway ballast. During the test, ballast sludge formed after the railway ballast corrodes accumulates at the bottom of the box.

[0039] The aforementioned test basket 2 has several through holes 21.

[0040] During the test, in order to pump in the test liquid - sodium sulfate solution and to pump in the sodium sulfate solution again after cleaning the railway ballast, the above-mentioned railway ballast sodium sulfate solution immersion loss rate test chamber also includes a first liquid storage tank 41 for supplying sodium sulfate solution and a second liquid storage tank 42 for supplying clean water solution.

[0041] Specifically, the bottom of the experimental chamber 1 is fixedly connected to the chamber 4, which holds the first liquid storage tank 41 and the second liquid storage tank 42.

[0042] During operation, the sodium sulfate solution in the first storage tank 41 is automatically pumped into the experimental chamber 1, and the sodium sulfate solution in the experimental chamber is pumped back to the first storage tank 41 after the test is completed. Similarly, clean water is pumped into and out of the experimental chamber 1 and into the second storage tank 42. The above-mentioned railway ballast sodium sulfate solution immersion loss rate test chamber also includes a liquid circuit system for circulating the liquid between the experimental chamber 1 and the first storage tank 41 and the second storage tank 42.

[0043] Example 2

[0044] like Figure 1-3 As shown, in this embodiment, based on the structure of embodiment 1, an inlet A is provided at the upper part of the left side wall of the experimental chamber 1, and an outlet B is provided at the lower part of the side wall of the experimental chamber 1.

[0045] The liquid circuit system includes a water pump 51, the inlet of which is connected to a main pumping pipe 101. The main pumping pipe 101 is connected to a first suction pipe 102 and a second suction pipe 103, respectively, for pumping liquid from the first storage tank 41 and the second storage tank 42. The inlet ends of the first suction pipe 102 and the second suction pipe 103 extend into the first storage tank 41 and the second storage tank 42, near the bottom of the tanks. Furthermore, valves are installed on the first suction pipe 102 and the second suction pipe 103.

[0046] Meanwhile, the outlet end of the water pump 51 is connected to the pump pipe 106, which is connected to the inlet A.

[0047] During the pumping process, if it is necessary to pump sodium sulfate solution, open the valve on the first suction tube 102 and close the other valves to pump the sodium sulfate solution into the experimental chamber 1 to soak the test basket 2.

[0048] After the test is completed, the sodium sulfate solution is returned to the first storage tank 41.

[0049] Specifically, the height of the outlet B (located at the top of the first liquid storage tank 41 and the second liquid storage tank 42) is higher than the height of the first liquid storage tank 41 and the second liquid storage tank 42.

[0050] The above-mentioned liquid circuit system also includes a drain pipe 107 connected to the outlet B, and the drain pipe 107 is connected to a first drain pipe 105 and a second drain pipe 104 (both the first drain pipe 105 and the second drain pipe 104 are equipped with valves).

[0051] At this point, relying on gravity, the sodium sulfate liquid returns to the first storage tank 41 after the valve on the first pipe 105 is opened.

[0052] After the sodium sulfate liquid immersion test is completed, the test basket 2 needs to be cleaned by immersion in clean water. At this time, similarly, the valve on the second suction pipe 104 is opened and the other valves are closed, and the clean water is pumped into the experimental chamber 1 to immerse the test basket 2. After the immersion is completed, similarly, the valve is opened and the clean water returns to the second storage tank 42 by gravity.

[0053] Because a large amount of mud and sludge is generated from the railway ballast during the testing process, filters are connected to the pump pipe 106 and the drain pipe 104 to prevent sludge blockage. Specifically, the pump pipe 106 is connected to the first filter 511, and the drain pipe 107 is connected to the second filter 512. The filter 511 is a conventional filtration device disclosed in the prior art, and its main structure includes a shell and a filter element located inside the shell, which achieves sludge filtration.

[0054] Similarly, to maintain the cleanliness of the liquid in the first liquid storage tank 41 and the second liquid storage tank 42, filter screens C are fixedly connected to the upper ends of the first liquid storage tank 41 and the second liquid storage tank 42, respectively, with the first pipe 105 and the second pipe 104 located above the filter screens C. Specifically, similar to existing methods, the filter screens are fixed near the openings of the first liquid storage tank 41 and the second liquid storage tank 42 (maintained above the liquid surface). When the pumped-back liquid passes through the filter screens, solids in the liquid are filtered out.

[0055] Example 3

[0056] like Figure 1-3 As shown, based on the structure of Example 2, this embodiment, for ease of operation, further includes a control cabinet 1 in the above-mentioned railway ballast sodium sulfate solution immersion loss rate test chamber, which is fixedly installed on the left side wall of the test chamber 1, in accordance with existing methods. Similar to existing methods, the water pump 51 and the main structure of the liquid circuit system are all housed within the control cabinet 1.

[0057] Meanwhile, in accordance with the existing method, a liquid level sensor 12 is installed at the top of the above-mentioned experimental chamber 1, so that the water pump 51 stops working when the liquid surface touches the liquid level sensor.

[0058] Similar to existing methods, a heating resistor (not shown in the figure) for heating sodium sulfate solution is installed on the first liquid storage tank 41. The temperature of sodium sulfate solution is maintained at 25-35 degrees Celsius by a temperature controller using the same temperature control method as existing methods.

[0059] Similar to existing methods, buttons for starting the water pump 51, heating resistor, and other components are installed on the control cabinet 1 to increase the ease of operation during the work process.

[0060] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A railway ballast sodium sulfate solution immersion loss rate test box characterized by, Including experimental box, the inner support frame is fixedly connected in the experimental box, a plurality of test net baskets for placing railway ballast are arranged on the top of the inner support frame, a plurality of through holes are formed in the test net basket; The railway ballast sodium sulfate solution immersion loss rate test box further comprises a first liquid storage box for sodium sulfate liquid and a second liquid storage box for clean water liquid. The railway ballast sodium sulfate solution immersion loss rate test box further comprises a liquid path system for circulating pump liquid between the experimental box and the first liquid storage box and the second liquid storage box, which is used for pumping sodium sulfate liquid in the first liquid storage box into the experimental box for immersion test railway ballast, and pumping clean water in the second liquid storage box into the second liquid storage box for cleaning railway ballast.

2. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 1, characterized by, The railway ballast sodium sulfate solution immersion loss rate test box further comprises a control cabinet, which is fixedly installed on the side wall of one side of the experimental box.

3. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 1, characterized by, The bottom of the experimental box is fixedly connected with a placing box for placing the first liquid storage box and the second liquid storage box.

4. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 1, characterized by, The inner support frame comprises a transversely distributed horizontal frame and a plurality of vertical horizontal longitudinal frames.

5. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 1, characterized by, The side wall of the experimental box is provided with a liquid inlet at the upper end, and the side wall of the experimental box is provided with a liquid outlet at the lower end.

6. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 5, characterized by, The liquid path system comprises a water pump, the water inlet end of the water pump is communicated with a water suction main pipe, the water suction main pipe is respectively communicated with a first suction pipe and a second suction pipe for sucking liquid in the first liquid storage box and the second liquid storage box; The water outlet end of the water pump is communicated with a pump discharge pipe, and the pump discharge pipe is communicated with the liquid inlet.

7. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 6, characterized by, The height position of the liquid outlet is higher than the height position of the first liquid storage box and the second liquid storage box. The liquid path system further comprises a liquid discharge pipe communicated with the liquid outlet position, and the liquid discharge pipe is respectively communicated with a first discharge pipe and a second discharge pipe. The first discharge pipe and the second discharge pipe are respectively located in the first liquid storage box and the second liquid storage box.

8. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 7, characterized by, The pump discharge pipe and the liquid discharge pipe are respectively communicated with a filter. The upper end position of the first liquid storage box and the second liquid storage box is respectively fixedly connected with a filter screen, and the first discharge pipe and the second discharge pipe are located above the filter screen.

9. The railway ballast sodium sulfate solution immersion loss test chamber according to claim 7, characterized by, Valves are respectively installed on the first discharge pipe and the second discharge pipe. Valves are respectively installed on the first suction pipe and the second suction pipe.

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