Radioactive contaminated soil sampling device

Abstract

The utility model discloses a radioactive contaminated soil sampling device, which realizes the sampling of radioactive contaminated soil with fixed sampling depth and sampling quantity by designing a soil sampling frame and arranging a limiting strip on the outer side of a frame strip of the soil sampling frame. The uncertainty of the sampling depth and the sampling volume of sampling tools such as a sampling shovel and a small shovel is overcome, and the repeatability of sample collection by different sampling personnel and the same sampling personnel at different moments is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental nuclear radiation quality monitoring, and in particular relates to a radioactive contaminated soil sampling device. Background Art

[0002] Radioactive aerosols and fallout generated in nuclear and radiation emergencies, after falling to the ground surface, are in a free state on certain hard surfaces such as concrete and metal surfaces. When encountering external forces or airflow changes, they may float in the air again; if they encounter relatively rough surfaces, the fallout particles will fill the gaps on the surface and generally will not easily return to the atmosphere to become floating objects. In soil media, since some soils have the ability to absorb radioactive substances, radioactive fallout often adheres to soil particles to form radioactive soil particles. The movement speed of radioactive substances in the soil is related to both the properties of the soil and the properties and state of the nuclides. For example 90 The migration speed of Sr nuclides in sand layers with a pH of 6.7 is about 1 / 70 of that of groundwater. If the soil contains a higher proportion of clay and the pH value is higher, the migration speed will be even lower. According to the research results on the migration and penetration depth of radionuclides, more than 90% of radionuclides are retained by the soil in the soil surface layer less than 10mm.

[0003] When conducting ecological restoration and pollution control on radioactive contaminated soil, it is necessary to determine the degree of radioactive contamination through soil sampling and measurement. At present, there are no special tools for sampling radioactive contaminated soil in nuclear and radiation emergencies. Commercially available shovels and spades are commonly used. The disadvantage of using shovels and spades for sampling is that the sampling depth and sampling volume are not fixed. Different samplers, or the same sampler at different times, use different forces, and the shovels and spades dig soil samples to different depths, and the sampling volume is also not fixed. Utility Model Content

[0004] In view of this, the utility model provides a radioactive contaminated soil sampling device, which can quickly sample and measure. By designing a soil sampling frame and setting a limit strip on the outside of the rectangular frame of the soil sampling frame, the fixed sampling depth and sampling amount of radioactive contaminated soil can be sampled.

[0005] The present invention provides a radioactive contaminated soil sampling device, comprising a soil sampling frame, wherein the soil sampling frame comprises a handle, a rectangular frame and a limit bar, wherein the four corners of the upper end of the rectangular frame are reinforced with right-angled triangle connecting pieces, a handle is arranged on the upper end of the rectangular frame, and limit bars are symmetrically arranged on the outside of both sides of the rectangular frame, and the limit bars extend horizontally and are perpendicular to the rectangular frame.

[0006] Furthermore, the rectangular frame is a square.

[0007] Furthermore, the lower end of the rectangular frame is in a knife-edge shape.

[0008] Furthermore, it also includes a soil sampling shovel, the soil sampling shovel includes a side groove, a shovel head, a blocking plate and a shovel handle, the side grooves are symmetrically arranged on both sides of the shovel head, one end of the other two sides is open and the other end is provided with a blocking plate, the shovel handle is arranged on the blocking plate, and the spacing of the side grooves is greater than the length or width of the cross section of the sampling cavity of the soil sampling frame;

[0009] The height of the side groove is the same as the distance from the limiting strip to the lower end of the rectangular frame.

[0010] Furthermore, the front end of the shovel head is sawtooth-shaped.

[0011] Beneficial effects:

[0012] 1. The utility model designs a soil sampling frame with a limit bar, which can quickly take samples and measure, realizes sampling with fixed sampling depth and sampling volume, overcomes the uncertainty of sampling depth and sampling volume of sampling tools such as sampling shovels and spades, and meets the repeatability of samples collected by different samplers and the same sampler at different times.

[0013] 2. The lower end of the rectangular frame of the utility model is made into a knife-edge shape, which can be more convenient for sampling.

[0014] 3. The utility model also includes a soil sampling shovel, which is used in conjunction with a soil sampling frame to facilitate sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a soil sampling frame structure diagram of a radioactive contaminated soil sampling device provided by the utility model.

[0016] Figure 2 The utility model provides a soil sampling shovel structure diagram of a radioactive contaminated soil sampling device.

[0017] Among them, 1-handle, 2-right-angled triangle connecting piece, 3-rectangular frame, 4-handle bracket, 5-limiting strip, 6-side groove, 7-shovel head, 8-blocking plate, 9-shovel handle. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0019] The utility model provides a radioactive contaminated soil sampling device, comprising a soil sampling frame, which is usually made of stainless steel.

[0020] Soil sampling frame, e.g. Figure 1As shown, it includes a handle 1, a rectangular frame 3 and a limiting strip 5. The handle 1 is arranged at the upper end of the rectangular frame 3, and the limiting strips 5 are symmetrically arranged on the outside of the two sides of the rectangular frame 3. The limiting strips 5 extend horizontally and are perpendicular to the rectangular frame 3. The rectangular frame 3 is formed by connecting four side panels in sequence. The cavity formed inside the rectangular frame 3 is used to accommodate the sample to be sampled, that is, the sampling cavity. The distance from the limiting strip 5 to the lower end of the rectangular frame 3 can be set according to actual needs or relevant national standards. For example, the distance from the limiting strip 5 to the lower end of the rectangular frame 3 is 20 mm.

[0021] The rectangular frame 3 may also be a square, with an inner side length of 100 mm and a frame height of 45 mm;

[0022] At the four corners of the upper end of the rectangular frame 3, that is, at the top of every two adjacent side panels, right-angled triangle connecting pieces 2 can be used for reinforcement;

[0023] The handle 1 is fixedly connected to the rectangular frame 3 through two symmetrical upright handle brackets 4. The top of the bracket is cut into a semicircle. A cylindrical handle is installed between the handle brackets 4. The handle 1 has a diameter of 40 mm and is used to press the soil sampling frame into the soil.

[0024] When sampling radioactive contaminated soil, it is generally necessary to first level the soil surface, remove vegetation at the sampling site, remove stones, and compact the ground. The basic morphology of the treated soil surface is consistent, so as long as the sampling depth is fixed, the sampling volume can be guaranteed to be fixed. When in use, press the handle 1 of the soil sampling frame, insert the soil sampling frame into the soil to be sampled, and then use a flat shovel to dig out the surface soil outside the sampling frame, and use a flat shovel to insert it into the bottom of the sampling frame along the lower edge of the rectangular frame 3, push it flat to the bottom, and take out the soil sampling frame and the sampled soil at the same time. The soil in the soil sampling frame is the sample.

[0025] In order to facilitate operation, the utility model provides a radioactive contaminated soil sampling device, which can also include a soil sampling shovel, such as Figure 2 As shown, it includes a shovel head 7 and a shovel handle 9, side grooves 6 are symmetrically arranged on both sides of the shovel head 7, and one end of the other two sides is open and the other end is provided with a blocking plate 8, and the shovel handle 9 is arranged on the blocking plate 8, and the height of the side groove 6 is the same as the distance from the limit strip 5 to the lower end of the rectangular frame 3;

[0026] The side grooves 6 on both sides are perpendicular to the bottom surface of the shovel head 7, and the spacing between the side grooves 6 is slightly larger than the length or width of the cross section of the sampling cavity of the soil sampling frame. For example, the side groove 6 is 20 mm deep, and there is a 45 mm high blocking plate 8 on the rear side of the shovel head 7; the shovel handle 9 has a diameter of 40 mm and is welded to the center of the outer side of the blocking plate 8 at an angle of 15 degrees.

[0027] In addition, in order to facilitate sampling, the lower end of the rectangular frame 3 can be made into a knife edge shape, and the front end of the shovel head 7 can be made into a sawtooth shape.

[0028] Example:

[0029] like Figure 1 As shown, the soil sampling frame of the soil sampling device of the utility model includes a sampling frame, a limit bar 5 and a handle 1. The four corners of the sampling frame are reinforced with right-angled triangle connecting pieces 2 (reinforcement pieces). The sampling frame is designed with a plate with a 90-degree angle. After welding, each inner side is 100 mm long, and the bottom edges of the four frames are polished with a knife edge. The limit bar 5 is a triangular iron with a 90-degree angle. One side is welded to the frame, and the other side is perpendicular to the frame and parallel to the knife edge, 20 mm away from the knife edge. Two handle brackets 4 are welded on both sides of the limit bar 5. The upper end is polished into a semicircle. A hole is opened at the center of the semicircle to insert the cylindrical handle. The two ends of the handle 1 are welded to the bracket.

[0030] like Figure 2 As shown, the soil sampling shovel of the soil sampling device of the utility model comprises a shovel head 7 and a shovel handle 9. The shovel head 7 is designed as a plate, the front end is cut into a serrated shape, the two sides and the rear end are rolled up into an upright shape, and the rear edges of the two sides are welded together with the two sides of the rear side plate. The middle of the two sides of the shovel head 7 is cut into a side groove 6 parallel to the bottom surface, the side groove 6 has a depth of 20mm, and the front and rear ends of the side groove 6 are cut into an oblique angle. The shovel handle 9 is cylindrical, the rear end is sealed, and the front end is welded to the center of the rear side of the shovel head 7.

[0031] The specific working process of this device is as follows:

[0032] Step 1: Press the handle 1 of the soil sampling frame and insert the soil sampling frame into the soil to be sampled (the soil surface has been leveled); if the soil to be sampled is hard, you can step on it or use a rubber hammer to knock on the reinforcement sheets at the four corners of the frame;

[0033] Step 2: Use a soil shovel to dig out the soil outside the border of the soil sampling frame without the limit strip 5;

[0034] Step 3: Insert the soil sampling shovel from the excavated side into the lower end of the sampling frame, and push it to the bottom along the limit strip 5 of the soil sampling frame;

[0035] Step 4: lift the soil sampling shovel together with the soil sampling frame, hold the handle 1 of the soil sampling frame and tilt it slightly forward, pour out the soil outside the frame and discard it;

[0036] Step 5: Lift the soil sampling frame upwards, leaving the soil in the frame, and put the soil into a sample bag or sample bottle.

[0037] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A radioactive contaminated soil sampling device, characterized in that: The soil sampling frame comprises a handle (1), a rectangular frame (3) and a limit strip (5), wherein the four corners of the upper end of the rectangular frame (3) are reinforced with right-angled triangular connecting pieces, the handle (1) is arranged at the upper end of the rectangular frame (3), and the limit strips (5) are symmetrically arranged on the outside of both sides of the rectangular frame (3), and the limit strips (5) extend horizontally and are perpendicular to the rectangular frame (3); It also comprises a soil sampling shovel, the soil sampling shovel comprising a side groove (6), a shovel head (7), a blocking plate (8) and a shovel handle (9), the side grooves (6) are symmetrically arranged on both sides of the shovel head (7), one end of the other two sides is open and the other end is provided with a blocking plate (8), the shovel handle (9) is arranged on the blocking plate (8), and the spacing between the side grooves (6) is greater than the length or width of the cross section of the sampling cavity of the soil sampling frame; The height of the side groove (6) is the same as the distance from the limiting strip (5) to the lower end of the rectangular frame (3).

2. A radioactive contaminated soil sampling device according to claim 1, characterized in that: The rectangular frame (3) is a square.

3. The radioactive contaminated soil sampling device according to claim 1, characterized in that: The lower end of the rectangular frame (3) is in the shape of a knife edge.

4. The radioactive contaminated soil sampling device according to claim 1, characterized in that: The front end of the shovel head (7) is sawtooth-shaped.

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