SU976329A1

SU976329A1 - Bottom sediment sampler

Info

Publication number: SU976329A1
Application number: SU802969632A
Authority: SU
Inventors: Олег Вадимович Гарбаренко; Леонид Давидович Слонимский
Original assignee: Всесоюзный Научно-Исследовательский Институт Морской Геологии И Геофизики
Priority date: 1980-08-04
Filing date: 1980-08-04
Publication date: 1982-11-23

Description

Изобретение относится к морским геолого-разведочным работам, и в частности к пробоотборникам донных осадков.The invention relates to marine exploration, and in particular to samplers of bottom sediments.

Известен пробоотборник донных осадков, содержащий полую трубу,с режущим 5. наконечником в нижней части и крышкой, имеющей центральное отверстие в верхней части, размещенный внутри трубы поршень со штоком, пропущенным через центральное отверстие крышки, укреп- ¹⁰ленный на штоке тормозной диск, опорную пяту и соединенный с ней механизм фиксации поршня [1 ].Known sediment sampler comprising a hollow tube, with the cutting tip 5 in the lower part and a cover having a central opening in the upper portion disposed within the tube with the piston rod passed through the central opening of the lid, strengthening lenny ¹⁰ on the rod brake disc, supporting the heel and the piston fixing mechanism connected to it [1].

Внедрение полой трубы этого пробоотборника в исследуемые донные осад- ¹⁵ки под действием гидростатического давления на крышку этой трубы происходит со значительной скоростью, при этом поршень находится в неподвижном ₂θ состоянии и, ограничивая перемещение трубы, соударяется в крайнем ее положении с крышкой. При многоразовом использовании пробоотборника возникаю2 щие при его работе ударные нагрузки приводят к разрушению контактирующих элементов: крышки и поршня, нарушению работоспособности других звеньев, общему снижению эксплуатационной надежности пробоотборника.Introducing the hollow tube of the sampler in the bottom studied ki osad- ¹⁵ under the action of hydrostatic pressure on the cover of the pipe occurs at a significant rate, while the piston is in a stationary state and θ _2, restricting movement of the pipe, it collides in an extreme position with a lid. When the sampler is used repeatedly, shock loads arising during its operation lead to the destruction of the contacting elements: the cap and piston, disruption of the operation of other links, and a general decrease in the operational reliability of the sampler.

Целью изобретения является повышение надежности пробоотборника в эксплуатации.The aim of the invention is to increase the reliability of the sampler in operation.

. Указанная цель достигается тем, что в пробоотборнике донных осадков, содержащем полую трубу с режущим наконечником в нижней части и крышкой, имеющей центральное отверстие в верхней части, размещенный внутри трубы поршень со штоком, пропущенным через центральное отверстие крышки, укрепленный на штоке тормозной диск, опорную пяту и соединенный с ней механизм фиксации поршня, в нижней части штока выполнена проточка, а надпоршневая полость трубы ниже верхней кромки проточки заполнена жидкостью.. This goal is achieved by the fact that in the bottom sediment sampler containing a hollow pipe with a cutting tip in the lower part and a cover having a central hole in the upper part, a piston is placed inside the pipe with a rod passed through the central hole of the cover, the brake disc is mounted on the rod, the support the heel and the piston fixation mechanism connected to it, a groove is made in the lower part of the stem, and the tube above the piston cavity is filled with liquid below the upper edge of the groove.

На чертеже изображен разрез пробоотборника.The drawing shows a section of a sampler.

Устройство состоит из полой трубы с режущим наконечником 2 в нижней и крышкой 3 в верхней части, при этом 5 крышка 3 имеет центральное отверстие, размещенного внутри трубы 1 поршня 4 и соединяющего его с тормозным диском 5, пропущенным через центральное отверстие крышки 3 штока 6, а также кон-10 тактной пяты 7 и соединенного с ней механизма фиксации поршня 4 в трубе 1 (механизм фиксации показан на чертеже условно).The device consists of a hollow pipe with a cutting tip 2 in the bottom and a cover 3 in the upper part, while 5 the cover 3 has a central hole located inside the pipe 1 of the piston 4 and connecting it to the brake disk 5, passed through the Central hole of the cover 3 of the rod 6, as well as con-10 of the heel 7 and the piston 4 fixing mechanism connected to it in the pipe 1 (the fixing mechanism is conventionally shown in the drawing).

В нижней части штока 6 (в месте его15 соединения с поршнем 4) выполнена проточка 8, а полость трубы 1 над поршнем 4 заполнена жидкостью, например водой 9 до уровня, расположенного несколько ниже верхней кромки 10 про- 20 точки 8. В крышке 3 и поршне 4 установлены уплотнительные элементы соответственно 11 и 12.A groove 8 is made in the lower part of the stem 6 (in the place of its connection 15 with the piston 4), and the cavity of the pipe 1 above the piston 4 is filled with liquid, for example, water 9 to a level slightly lower than the upper edge 10 of point 20 8. In the cover 3 and the piston 4 has sealing elements 11 and 12, respectively.

Пробоотборник работает следующим образом. 25The sampler works as follows. 25

При взаимодействии контактной пяты 7 с дном она перемещается относительно поршня 4, обеспечивая расфиксацию полой трубы 1 и поршня 4. Под действием гидростатического давления эд труба 1 погружается в донные осадки до упора крышки 2 трубы 1 в неподвижный поршень 4. Причем как только крышка 2 доходит до проточки 8 в штоке 6, надпоршневая полость трубы 1 сообщается через образующийся кольцевой канал с окружающей средой, и находящаяся в ней вода 9 выдавливается крышкой 2 в этот канал. В результате постепенно гасится кинетическая энергия трубы Г и уменьшается сила удара ее крышки 2 о поршень 4.When the contact heel 7 interacts with the bottom, it moves relative to the piston 4, ensuring the hollow pipe 1 and piston 4 are released. Under the influence of hydrostatic pressure, the pipe 1 is immersed in the bottom sediments until the cover 2 of the pipe 1 stops in the stationary piston 4. Moreover, as soon as the cover 2 reaches to the groove 8 in the stem 6, the supra-piston cavity of the pipe 1 communicates through the formed annular channel with the environment, and the water 9 contained in it is squeezed out by the cover 2 into this channel. As a result, the kinetic energy of the pipe G is gradually extinguished and the impact force of its cap 2 on the piston 4 decreases.

Claims

This invention relates to marine geological exploration, and in particular to samplers for bottom sediments. A sampler of bottom sediments containing a hollow tube is known, with a cutting tip in the lower part and a lid with a central opening in the upper part, a piston placed inside the pipe with a rod passed through the central opening of the lid, a brake disk fixed to the rod and supporting piston fixation mechanism 1 3. The introduction of the hollow tube of this sampler into the bottom sediments under the action of hydrostatic pressure on the cover of this tube occurs at a considerable speed, while the piston is stationary and, limiting the movement of the pipe, collides in its extreme position with the cap. With multiple use of the sampler, the shock loads that occur during its operation lead to the destruction of the contacting elements; the cover and the piston, the malfunction of other units, the overall decrease in the operational reliability of the sampler. The aim of the invention is to improve the reliability of the sampler in operation. . This goal is achieved by the fact that in a bottom sediment sampler containing a hollow tube with a cutting tip in the lower part and a lid having a central opening in the upper part, a piston placed inside the pipe with a rod passed through the central opening of the lid, a brake disc fixed to the stem. The piston fixation mechanism connected with it, the groove is made in the lower part of the stem, and the over-piston tube cavity below the upper edge of the groove is filled with liquid. 3 97: The drawing shows the incision of the sampler. The device consists of a hollow pipe 1 with a cutting tip 2 at the bottom and a lid 3 at the top, while the lid 3 has a central opening located inside the pipe 1 of the piston i and connecting it to the brake disk 5 passed through the central opening of the cover 3 of the stem 6 , as well as contact points 7 and the piston k fixation mechanism connected to it in pipe 1 (the fixation mechanism is shown conventionally in the drawing). 8 of the lower part of the rod 6 (in the place of ero connection with the piston k) is made about point 8, and the cavity of pipe 1 above the piston is filled with liquid, for example water 9 to a level located slightly below the top edge 10 of the groove 8. In cover 3 and piston j installed sealing elements, respectively, 11 and 12. The sampler works as follows. When the contact pin 7 interacts with the bottom, it moves relative to piston C, providing uncoupling of the hollow pipe 1 and piston k. Under the action of hydrostatic pressure, the pipe 1 is immersed in the bottom sediments up to the stop of the cover 2 of the pipe 1 in the fixed piston k. Moreover, as soon as the cover 2 reaches the groove 8 in the rod 6 9, the over-piston cavity of the pipe 1 communicates through the annular channel formed with the environment, and the water 9 with it 9 is squeezed out by the cover 2 into this channel. As a result, the kinetic energy of the pipe G is gradually quenched and the impact force of its cover 2 on the piston 4 is reduced. Claims passed through a central opening of the cover, a brake disc fixed to the stem, a supporting pto and a piston fixation mechanism connected to it, characterized in that, in order to increase the reliability of the sampler in this spluatatsii in the lower part of the rod has a groove and the cavity above the piston tube below the upper edge of the bore is filled with fluid. Sources of information taken into account in the examination of T. USSR Author's Certificate in Application No. 208 678 / 29-33, cl. Е 02 D 1 / Ok, Е 21 В, 197 (prototype).