A seabed soil sampling container

Abstract

This utility model provides a seabed soil sampling container, belonging to the field of marine technology, to solve the problem that existing samples are prone to structural damage due to sudden pressure drops, affecting the accuracy of subsequent sample testing results. It includes a sampling cylinder, a sampling tube, a sampling one-way valve, a sampling connecting frame, a pressure compensation component, a sampling drive mechanism, and a pressure compensation mechanism. The sampling tube is fixedly connected to the lower end of the sampling cylinder. The sampling one-way valve is threadedly connected to the lower end of the sampling tube. The sampling connecting frame is fixedly connected to the upper end of the sampling cylinder, and a lifting ring structure is fixedly connected to the upper end of the sampling connecting frame. The pressure compensation component is a strain gauge pressure sensor structure, fixedly connected to the inner side of the sampling tube. The sampling drive mechanism is located inside the sampling cylinder. The pressure compensation mechanism, located inside the sampling cylinder, prevents structural damage to the sample due to sudden pressure drops, thus improving the accuracy of subsequent sample testing results.

Description

Technical Field

[0001] This utility model belongs to the field of marine technology, and more specifically, it relates to a seabed soil sampling container. Background Technology

[0002] Submarine soil sampling containers are important equipment in the field of marine technology, mainly used for collecting seabed sediment and rock samples. Their structure includes a high-strength main frame, core sampling components, a drive and control system, and auxiliary devices. The sampling tube and piston device in the core components determine the sample collection quality. There are three main working principles: gravity-based, piston-based, and vibration-based. Gravity-based containers use their own weight to cut into the sediment, suitable for soft soil layers in shallow seas; piston-based containers use negative pressure to adsorb sediment, reducing sample disturbance, and are commonly used for deep-sea sampling; vibration-based containers use high-frequency vibration to reduce sediment resistance, suitable for collecting samples from hard soil layers. During use, the equipment must be adjusted and the counterweight calculated according to the sediment type and water depth; the descent speed must be controlled during deployment; sampling is completed according to different principles after contact with the bottom; after retrieval, the sample is sealed and cut.

[0003] The existing application number is CN201821964987.9. This utility model discloses a seabed sampler, including a sampling tube. A first positioning ring and a second positioning ring are sleeved on the lower part of the side of the sampling tube. A weight and a counterweight block make the seabed sampler fall vertically onto the seabed. The lower end of the sampling tube is inserted into the seabed. When the heating wire is energized, the air bladder breaks. The contents of the air bladder and the contents of the sampling tube react to generate liquid or solid products. The inside of the sampling tube becomes negative pressure, and the rubber block moves upward. The material on the seabed is sucked into the sampling tube through a check valve. This seabed sampler has a simple structure, low manufacturing cost, fast sampling, and small size, which improves the efficiency of seabed sampling. The material on the seabed is sucked into the sampling tube through the check valve. The material on the seabed pushes the tip of the fan-shaped plate to rotate upward, and the elastic plate bends. When the user pulls the seabed sampler upward with the sampling cable, the fan-shaped plate returns to its original position under the action of the elastic plate. The fan-shaped plates form a circular plate to block the fixing ring and prevent sample loss.

[0004] Based on the above, in existing methods of sampling seabed soil layers, the sample is prone to structural damage due to a sudden drop in pressure after being sucked into the sampling tube, which affects the integrity of the sample and the accuracy of subsequent sample testing results. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a seabed soil sampling container to solve the problem that, when sampling seabed soil, the sample is easily damaged due to a sudden drop in pressure after being sucked into the sampling tube, which affects the integrity of the sample and the accuracy of subsequent sample testing results.

[0006] The purpose and function of this utility model's seabed soil sampling container are achieved through the following specific technical means:

[0007] A seabed soil sampling container includes a sampling cylinder, a sampling tube, a sampling check valve, a sampling connecting frame, a pressure compensation component, a sampling drive mechanism, and a pressure compensation mechanism. The sampling tube is fixedly connected to the lower end of the sampling cylinder. The sampling check valve is threadedly connected to the lower end of the sampling tube. The sampling connecting frame is fixedly connected to the upper end of the sampling cylinder, and a lifting ring structure is fixedly connected to the upper end of the sampling connecting frame. The pressure compensation component is a strain gauge pressure sensor structure and is fixedly connected to the inner side of the sampling tube. The sampling drive mechanism is located inside the sampling cylinder. The pressure compensation mechanism is located inside the sampling cylinder.

[0008] Furthermore, the sampling drive mechanism includes a sampling trigger; the sampling trigger is slidably connected to the upper inner side of the sampling cylinder, a sealing structure is provided at the connection between the sampling trigger and the sampling cylinder, a fine needle structure is provided at the lower end of the sampling trigger, and the buoyancy of the sampling trigger is greater than that of the sampling cylinder.

[0009] Furthermore, the sampling drive mechanism also includes: a sampling limiting cylinder, a sampling trigger airbag, a sampling drive slider, and a sampling spring; the sampling limiting cylinder is fixedly connected to the inside left side of the sampling cylinder body; the sampling trigger airbag is fixedly connected to the inside upper end of the sampling limiting cylinder; the sampling drive slider is slidably connected to the inside lower end of the sampling limiting cylinder, and the upper end of the sampling drive slider is in contact with the sampling trigger airbag; the sampling spring is fixedly connected to the lower end of the sampling drive slider, and the lower end of the sampling spring is fixedly connected to the sampling limiting cylinder.

[0010] Furthermore, the sampling drive mechanism also includes a sampling drive piston and a sampling transmission rod; the sampling drive piston is slidably connected to the lower end of the sampling tube; the sampling transmission rod is fixedly connected to the upper end of the sampling drive piston, and the upper end of the sampling drive piston is fixedly connected to the sampling drive slider.

[0011] Furthermore, the pressure compensation mechanism includes a counterweight; the counterweight is a ring-shaped magnetic block structure, and the counterweight is magnetically connected to the inside of the sampling cylinder.

[0012] Furthermore, the pressure compensation mechanism also includes: a compensation gas tank, a compensation solenoid valve, and a sampling connection pipe; the compensation gas tank is a high-pressure gas tank structure, and the compensation gas tank is fixedly connected to the lower end of the sampling cylinder; the compensation solenoid valve is fixedly connected to the lower end of the sampling cylinder, the compensation solenoid valve is connected to the compensation gas tank, and the pressure compensation component is electrically connected to the control circuit of the compensation solenoid valve; the sampling connection pipe is fixedly connected to the inner side of the sampling tube, and the upper end of the sampling connection pipe is connected to the compensation solenoid valve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention, through the setting of a sampling drive mechanism, allows the sampling trigger to continue falling. The fine needle structure of the sampling trigger moves downward and punctures the sampling trigger airbag. At this time, the sampling trigger airbag no longer restricts the sampling drive slider, which moves upward under the action of the sampling spring. The upward movement of the sampling drive slider drives the sampling transmission rod to move upward, which in turn drives the sampling drive piston to move upward. The upward movement of the sampling drive piston creates a negative pressure environment inside the sampling tube. At this time, the seabed sample enters the interior of the sampling tube through the sampling check valve, realizing the sampling operation of the seabed soil layer. The purely mechanical structure not only simplifies the equipment composition, reduces costs and failure rates, but also reduces energy consumption and improves the reliability and stability of the sampling operation.

[0015] This invention utilizes a pressure compensation mechanism to monitor the internal pressure of the sampling tube. When the internal pressure falls below the design threshold, the pressure compensation mechanism controls the opening of the compensation solenoid valve. The solenoid valve then introduces high-pressure gas from the compensation gas tank into the sampling tube through the sampling connection pipe. This control of the internal pressure of the sampling tube prevents structural damage to the sample due to a sudden pressure drop, protects the sample, ensures its integrity, and improves the accuracy of subsequent sample testing results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the counterweight structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the sampling drive slider structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the compensating gas tank structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the compensation solenoid valve structure of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Sampling cylinder; 101. Sampling trigger; 102. Sampling limit cylinder; 103. Sampling trigger airbag; 104. Sampling drive slider; 105. Sampling spring; 106. Sampling drive piston; 107. Sampling transmission rod; 2. Sampling tube; 3. Sampling check valve; 4. Sampling connecting frame; 5. Pressure compensation component; 501. Counterweight; 502. Compensating air tank; 503. Compensating solenoid valve; 504. Sampling connecting tube. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Example 1:

[0025] As attached Figures 1 to 5 As shown:

[0026] This utility model provides a seabed soil sampling container, including a sampling cylinder 1, a sampling tube 2, a sampling one-way valve 3, a sampling connecting frame 4, a pressure compensation component 5, and a sampling drive mechanism; the sampling tube 2 is fixedly connected to the lower end of the sampling cylinder 1; the sampling one-way valve 3 is threadedly connected to the lower end of the sampling tube 2; the sampling connecting frame 4 is fixedly connected to the upper end of the sampling cylinder 1, and a lifting ring structure is fixedly connected to the upper end of the sampling connecting frame 4; the pressure compensation component 5 is a strain gauge pressure sensor structure, and the pressure compensation component 5 is fixedly connected to the inner side of the sampling tube 2; the sampling drive mechanism is located inside the sampling cylinder 1.

[0027] The sampling drive mechanism includes a sampling trigger 101. The sampling trigger 101 is slidably connected to the upper inner side of the sampling cylinder 1. A sealing structure is provided at the connection between the sampling trigger 101 and the sampling cylinder 1. A fine needle structure is provided at the lower end of the sampling trigger 101. The buoyancy of the sampling trigger 101 is greater than that of the sampling cylinder 1.

[0028] The sampling drive mechanism further includes: a sampling limiting cylinder 102, a sampling trigger airbag 103, a sampling drive slider 104, and a sampling spring 105; the sampling limiting cylinder 102 is fixedly connected to the left side of the inside of the sampling cylinder body 1; the sampling trigger airbag 103 is fixedly connected to the upper end of the inside of the sampling limiting cylinder 102; the sampling drive slider 104 is slidably connected to the lower end of the inside of the sampling limiting cylinder 102, and the upper end of the sampling drive slider 104 is in contact with the sampling trigger airbag 103; the sampling spring 105 is fixedly connected to the lower end of the sampling drive slider 104, and the lower end of the sampling spring 105 is fixedly connected to the sampling limiting cylinder 102.

[0029] The sampling drive mechanism also includes a sampling drive piston 106 and a sampling transmission rod 107. The sampling drive piston 106 is slidably connected to the lower end of the sampling tube 2. The sampling transmission rod 107 is fixedly connected to the upper end of the sampling drive piston 106, and the upper end of the sampling drive piston 106 is fixedly connected to the sampling drive slider 104.

[0030] The specific usage and function of this embodiment are as follows: When sampling seabed soil, after connecting the sampling frame 4 to the rope, the sampling cylinder 1 is lowered. Due to the low buoyancy of the sampling cylinder 1, the falling speed of the sampling cylinder 1 is greater than that of the sampling trigger 101. Once the sampling cylinder 1 reaches the seabed, the sampling trigger 101 continues to fall. The fine needle structure of the sampling trigger 101 moves downward and punctures the sampling trigger airbag 103. At this time, the sampling trigger airbag 103 no longer limits the sampling drive slider 1. 04. The sampling drive slider 104 moves upward under the action of the sampling spring 105. The upward movement of the sampling drive slider 104 drives the sampling transmission rod 107 to move upward. The upward movement of the sampling transmission rod 107 drives the sampling drive piston 106 to move upward. The upward movement of the sampling drive piston 106 changes the inside of the sampling tube 2 into a negative pressure environment. At this time, the seabed sample enters the inside of the sampling tube 2 through the sampling check valve 3, realizing the sampling operation of the seabed soil layer and avoiding the use of equipment such as negative pressure pumps.

[0031] Example 2:

[0032] This utility model provides a seabed soil sampling container, based on Embodiment 1, such as... Figures 1 to 5 As shown, it also includes a pressure compensation mechanism, which is located inside the sampling cylinder 1.

[0033] The pressure compensation mechanism includes a counterweight 501; the counterweight 501 is a ring-shaped magnetic block structure, and the counterweight 501 is magnetically connected to the inside of the sampling cylinder 1.

[0034] The pressure compensation mechanism also includes: a compensation gas tank 502, a compensation solenoid valve 503, and a sampling connection pipe 504; the compensation gas tank 502 is a high-pressure gas tank structure, and the compensation gas tank 502 is fixedly connected to the lower end of the sampling cylinder 1; the compensation solenoid valve 503 is fixedly connected to the lower end of the sampling cylinder 1, and the compensation solenoid valve 503 is connected to the compensation gas tank 502, and the pressure compensation component 5 is electrically connected to the control circuit of the compensation solenoid valve 503; the sampling connection pipe 504 is fixedly connected to the inner side of the sampling tube 2, and the upper end of the sampling connection pipe 504 is connected to the compensation solenoid valve 503.

[0035] The specific usage and function of this embodiment are as follows: When the sample enters the sampling tube 2, the pressure compensation component 5 monitors the internal pressure of the sampling tube 2. Once the internal pressure of the sampling tube 2 is lower than the design threshold, the pressure compensation component 5 controls the opening of the compensation solenoid valve 503. The compensation solenoid valve 503 inputs the high-pressure gas inside the compensation gas tank 502 into the sampling tube 2 through the sampling connection pipe 504, thereby controlling the internal pressure of the sampling tube 2, preventing the sample from being damaged due to a sudden drop in pressure, protecting the sample, ensuring the integrity of the sample, and improving the accuracy of subsequent sample detection results. When facing seabeds of different depths, the falling speed of the sampling cylinder 1 can be controlled by changing the counterweight 501.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0038] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0039] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A seabed soil sampling container, characterized in that: The sample includes a sampling cylinder (1), a sampling tube (2), a sampling check valve (3), a sampling connecting frame (4), a pressure compensation component (5), a sampling drive mechanism, and a pressure compensation mechanism. The sampling tube (2) is fixedly connected to the lower end of the sampling cylinder (1). The sampling check valve (3) is threadedly connected to the lower end of the sampling tube (2). The sampling connecting frame (4) is fixedly connected to the upper end of the sampling cylinder (1), and a lifting ring structure is fixedly connected to the upper end of the sampling connecting frame (4). The pressure compensation component (5) is a strain gauge pressure sensor structure, and the pressure compensation component (5) is fixedly connected to the inner side of the sampling tube (2). The sampling drive mechanism is located inside the sampling cylinder (1). The pressure compensation mechanism is located inside the sampling cylinder (1).

2. An in-situ seabed soil sampling container as claimed in claim 1, wherein: The sampling drive mechanism includes a sampling trigger (101); the sampling trigger (101) is slidably connected to the upper inner side of the sampling cylinder (1), a sealing structure is provided at the connection between the sampling trigger (101) and the sampling cylinder (1), a fine needle structure is provided at the lower end of the sampling trigger (101), and the buoyancy of the sampling trigger (101) is greater than that of the sampling cylinder (1).

3. An in situ seabed soil sample container as claimed in claim 2, wherein: The sampling drive mechanism further includes: a sampling limiting cylinder (102), a sampling trigger airbag (103), a sampling drive slider (104), and a sampling spring (105); the sampling limiting cylinder (102) is fixedly connected to the left side of the inside of the sampling cylinder body (1); the sampling trigger airbag (103) is fixedly connected to the upper end of the inside of the sampling limiting cylinder (102); the sampling drive slider (104) is slidably connected to the lower end of the inside of the sampling limiting cylinder (102), and the upper end of the sampling drive slider (104) is in contact with the sampling trigger airbag (103); the sampling spring (105) is fixedly connected to the lower end of the sampling drive slider (104), and the lower end of the sampling spring (105) is fixedly connected to the sampling limiting cylinder (102).

4. An in-situ seabed soil sample container as claimed in claim 3, wherein: The sampling drive mechanism further includes a sampling drive piston (106) and a sampling transmission rod (107); the sampling drive piston (106) is slidably connected to the lower end of the sampling tube (2); the sampling transmission rod (107) is fixedly connected to the upper end of the sampling drive piston (106), and the upper end of the sampling drive piston (106) is fixedly connected to the sampling drive slider (104).

5. An in-situ seabed soil sample container as claimed in claim 1, wherein: The pressure compensation mechanism includes a counterweight (501); the counterweight (501) is a circular magnetic block structure, and the counterweight (501) is magnetically connected to the inside of the sampling cylinder (1).

6. An in situ seabed soil sampling container as claimed in claim 5, wherein: The pressure compensation mechanism further includes: a compensation gas tank (502), a compensation solenoid valve (503), and a sampling connection pipe (504); the compensation gas tank (502) is a high-pressure gas tank structure, and the compensation gas tank (502) is fixedly connected to the lower end of the sampling cylinder (1); the compensation solenoid valve (503) is fixedly connected to the lower end of the sampling cylinder (1), the compensation solenoid valve (503) is connected to the compensation gas tank (502), and the pressure compensation component (5) is electrically connected to the control circuit of the compensation solenoid valve (503); the sampling connection pipe (504) is fixedly connected to the inner side of the sampling tube (2), and the upper end of the sampling connection pipe (504) is connected to the compensation solenoid valve (503).

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