RU33402U1 - SELF-EXISTING BOTTOM SHOWER BOTTOM Sampler - Google Patents

Description

ObzT14b94

SELF-EXISTING Pneumatic Impact Sampler

DONNB1X DEPOSITS

The utility model relates to devices designed for offshore exploration, mainly in the shallow zone of the continental shelf with small small sits; their craft, such as boats and pontoons, whose carrying capacity is insufficient to extract a sampler clogged into bottom sediments.

Known pneumatic impact sampler of bottom sediments, containing a core pipe, pneumatic impact mechanism and a device for extracting a sampler from the soil, made in the form of a load attached to the lifting cable, sliding along the rod, rigidly connected with the sampler. An emphasis is fixed at the upper end of the rod, on which strikes are applied by the load, extracting the sampler from the ground in case of insufficient load-bearing capacity of the craft 2, 5.

A disadvantage of the known sampler is the unreliability of the extraction device in the conditions of the drift of the vessel, which is practically impossible to hold over the sampler and ensure vertical movement of the lifting cable.

IPC: E 21 V 49/02, G 01 N 1/08

bottom sediments, containing a core pipe, a non-impact mechanism in the form of a pneumatic chamber with a piston installed in it for periodically releasing compressed air from the exhaust opening of the pneumatic chamber into the jet nozzle. The self-extraction mechanism in 1, 3 is made in the form of an additional pneumatic chamber equipped with a piston for periodic release of compressed air into the jet nozzle directed downward. The sampler is removed from the ground by reactive impulses directed in the direction opposite to the air discharge.

A disadvantage of the known sampler 1, adopted as a prototype, is the complexity of the design and operation due to the presence of an additional pneumatic chamber, as well as additional hoses for supplying compressed air to the pneumatic chambers from the receiver;

The technical result of the utility model is to simplify the design and increase the reliability of operation.

The specified technical result is achieved by the fact that in a self-extracting pneumatic shock sampler of bottom sediments containing a core pipe, a percussion mechanism in the form of a pneumatic chamber with a piston installed in it for periodic release of compressed air from the exhaust opening of the pneumatic chamber into the jet nozzle.

A distinctive feature of the proposed sampler is that a nozzle is attached to the jet nozzle with a through horizontal hole in the wall and a perforated sleeve movably mounted in this hole with nozzles fixed at its ends, bent at right angles and equipped with jet nozzles, and the sampler is equipped with a fixing device that holds perforated sleeve

in the position of the jet nozzles up when introducing the sampler and the jet nozzles down when it is removed from the ground.

The drawing shows a diagram of a self-extracting pneumatic shock sampler of bottom sediments.

The sampler contains a core pipe 1 and a percussion mechanism in the form of a pneumatic chamber 2 with a piston 3 installed in it, intended for the periodic release of compressed air from the exhaust hole 4 in the jet nozzle 5. A glass 6 is attached to the latter with a through horizontal hole 7 made in its wall. In the hole 7, a perforated sleeve 8 is movably mounted having a hole in the wall 9. On the conps of the sleeve 8, nozzles 10 are fixed, bent at right angles and provided with jet nozzles 11.

To hold the sleeve 8 in a predetermined position, the sampler is equipped with a locking device made in the form of a spring 13 of a finger 13, the lower end of which is passed through an opening in the bottom of the glass 6 with the possibility of entering one of the holes 9. The force of the spring 12 can be adjusted using the clutch 14, connected on the thread with the fitting 15 attached to the glass 6. The upper end of the finger 13 is connected to the lifting cable 16. The norsel 3 is made three-stage with different diameters of the steps: the middle step 17 is larger than the brake step 18, and that, in its In turn, it is larger than the exhaust stage 19. Compressed air is supplied through the hose 20 to the channel 21, which has an outlet into the cavity of the pneumatic chamber 2, limited by the middle 17 and brake 18 steps 3. The vertical sampler at the bottom provides support ring 22.

The sampler works as follows. Before immersion, the clutch 14 compresses the spring 12 to a force the magnitude of which is greater than the weight of the sampler, but less than the load capacity of the ship’s winch. Finger 13 fixes the sleeve 8 in the position in which the jet nozzles 11 are directed upwards (shown in the diagram). The sampler sinks to the bottom and compressed air is supplied through the hose 20 and channel 21 into the cavity of the pneumatic chamber 2 limited by the middle 17 and brake 18 by the piston 3 steps. Due to the small difference in the diameters of these steps, the piston 3 is mixed; Compressed air fills the working chamber of the pneumatic chamber 2, increasing the pressure in it to a self-blowing value, which is determined by the difference between the diameters of the brake 18 and exhaust 19 stages of the piston 3. Stirring; moving toward the larger stage, the piston 3 covers the exhaust about verst 4. The pressure of compressed air acting on the upper end face of the piston 3, sharply throws it to the extreme position (shown in the diagram), fully opening the exhaust hole 4. Expanding compressed air fills the cavity of the glass 6 and perforated sleeve 8, pushing water out of the jet nozzles 11 up. This creates an impulse of reactive force, pushing the sampler down. After exhausting the air, the pressure above the piston 3 is compared with the surrounding one, and it again rises under the influence of the pressure difference on its middle 17 and brake 18 stages, closing the exhaust hole 4, and the surrounding water again fills the nozzle 11. The cycle repeats.

After the sampler is driven to a predetermined depth, the supply of compressed air stops and the sampler begins to rise when the cable is tensioned 16. If the force holding the sampler in the soil exceeds the force of spring 12, pin 13 leaves the hole

9, releasing the sleeve 8, which, under the weight of the parts attached to it, rotates to a position in which the jet nozzles 11 are directed downward (shown in broken lines in the diagram). Again, compressed air is supplied to the pneumatic chamber 2, which pushes water out of the jet nozzles 11. By means of reactive pulses directed upward, the sampler is independently removed from the soil to a height at which further extraction is possible using a ship’s winch.

Due to the design differences of the proposed self-extracting pneumatic shock sampler of bottom sediments, the following technical result is achieved: the design of the sampler is simplified due to the fact that the same air chamber is used both for driving the sampler into the soil and for extracting it from the soil, as well as operating costs are reduced and increased reliability due to the fact that only one hose is required to supply compressed air to the pneumatic chamber.

SOURCES BY TECHNOLOGY LEVEL I. Prototype and analogues:

1.RU 28179 and 1.10.03.2003 (prototype).

2.RU 24731 and 1, 08.20.2002 (analog).

P. Additional sources of prior art:

3.RU 608920 A 1, 05/30/1978.

4.RU 28180 and 1.10.03.2003.

5.Shelkovnikov I.G. et al. Impact sampler for exploration of sea placers. - Exploration and protection of mineral resources, 1977, No. 3, p. 244 - 244.

Claims (1)

A self-extracting pneumatic shock sampler of bottom sediments, containing a core pipe and a percussion mechanism in the form of a pneumatic chamber with a piston installed in it for periodically releasing compressed air from the pneumatic chamber’s exhaust outlet into a jet nozzle, characterized in that a glass with a through horizontal hole in the wall is attached to the jet nozzle and movably a perforated sleeve installed in this hole with nozzles fixed at its ends, bent at right angles and equipped with jet nozzles and, moreover, the sampler is equipped with a locking device that holds the perforated sleeve in position with the jet nozzles up when the sampler is inserted and the jet nozzles down when it is removed from the ground.