SU857784A1

SU857784A1 - Instrument for determination of solid body specific weight

Info

Publication number: SU857784A1
Application number: SU792835211A
Authority: SU
Inventors: Николай Андреевич Парцевский
Original assignee: Институт Геологических Наук Ан Усср
Priority date: 1979-10-29
Filing date: 1979-10-29
Publication date: 1981-08-23

Description

(54) ПРИБОР ДЛЯ ОПРЕДЕЛЕНИЯ УДЕЛЬНОГО ВЕСА ТВЕРДЫХ ТЕЛ(54) DEVICE FOR DETERMINING THE SPECIAL WEIGHT OF SOLID BODIES

II

Изобретение относитс к определению физи ческих свойств веществ и может быть использовано в геологии, химии, промышленности стройматериалов и др. отрасл х дл определени удельного веса веществ.The invention relates to the determination of the physical properties of substances and can be used in the geology, chemistry, building materials industry and other fields to determine the specific weight of substances.

Известен прибор дл определени удельного веса вещества объемным методом, содержащий Т-образный край, к одному концу которого подсоединен ртутный манометр, а к двум другим - загрузочна емкость и система дл создани вакуума. Объем навески вещества в известном приборе определ етс по фиксируемой ртутным манометром разности разр жени воздуха в пустой и заполненной исследуемым веществом загрузочной ёмкрстн, после открыти разобщающего емкость и манометр Т- йразного крана и падени строго заданного по манометру начального разр жени воз;: ха в манометрической трубке 1.A device is known for determining the specific gravity of a substance by a volumetric method, which contains a T-shaped edge, to one end of which a mercury manometer is connected, and to the other two - a loading capacity and a system for creating a vacuum. The volume of the substance in a known device is determined by the difference in air discharge recorded by the mercury manometer in the empty loading capacitance filled with the test substance after opening the uncoupling tank and manometer of the T-valve and the drop of the initial discharge; handset 1.

Однако необходимость создани с высокой точностью начального разр жени воздуха в известном приборе требует применени сложной системы дл создани вакуума.However, the need to create with high accuracy the initial discharge of air in a known device requires the use of a complex system to create a vacuum.

Наиболее близким к предлагаемому вл ет- с прибор, содержащий загрузочную емкость и автономно подсоединенные к ней ртутный манометр и систему дл создани и измерени разр жени воздуха в загрузочной емкости (2).The closest to the present invention is a device containing a loading capacity and a mercury manometer independently connected to it and a system for creating and measuring the discharge of air in the loading capacity (2).

Недостатком известного прибора вл етс сложность системы- дл создани вакуума, выполненной в виде герметизированной внутри стакана винтового компрессора резиновой ампулы . Кроме того, автономное соединение за10 грузочной емкости ртутного манометра и системы создани и измерени вакуума увеличивает число требующих герметичности соединений.A disadvantage of the known instrument is the complexity of the system - for creating a vacuum, made in the form of a rubber ampoule sealed inside a cup of a screw compressor. In addition, an autonomous connection for the 10 capacity of a mercury manometer and a vacuum creation and measurement system increases the number of connections requiring airtightness.

Цель изобретени - упрощение конструкции и эксплуатации прибора дл определени удель15 ного веса веществ.The purpose of the invention is to simplify the design and operation of the device for determining the specific weight of substances.

Эта цель достигаетс тем, что загрузочна емкость последовательно соединена с разр дной, емкостью и системами дл создани и измерени вакуума, а система дл создани вакуума This goal is achieved by the fact that the loading capacity is connected in series with the discharge capacity and the systems for creating and measuring vacuum, and the system for creating vacuum.

Claims

20 is designed as a vessel with mercury, communicating with the vacuum measurement system through a flexible tube with a transparent measuring tube. 3 The drawing shows an instrument for determining the specific gravity of a substance. The device includes the following hermetically and sequentially connected parts: valve 1, loading container 2, for test substance 3, discharge capacity 4, glass measuring tube 5, movable scale 6, flexible hose 7 and vessel 8 with mercury produced as follows. The loading container 2 is hermetically connected to the device. When the valve 1 is opened, the vessel 8 rises to a height sufficient to fill the fixed volume of the discharge tank 4 with mercury 9. Next, the valve is closed and air is discharged in the device by lowering the vessel 8 into a strictly fixed position below the measuring tube 5. The movable screen 6 is positioned meniscus mercury in the measuring tube to zero. After that, the valve is opened, loading the container is disconnected from the device and filled with the sample of test substance 3. All operations of creating a vacuum in the loading container are replicated and the length of the mercury column in the measuring tube is measured at the caliper. The weight of the test substance is determined from the calibration chart and its weight is calculated. The calibration graph is constructed from the results of determining the length of the mercury column in the measuring tube when creating air discharge in the loading tank filled with several known volumes of liquid. Thus, the proposed device, compared with the known one, is simpler in manufacturing and operation, since it simplifies the Vacuum generation system and the vacuum generation and measurement system in the loading container is structurally combined into one unit. The invention The device for determining the specific gravity of solids, containing the loading capacity of the test substance, discharge capacity, a transparent measuring tube with a movable scale and a system for creating a vacuum in the loading capacity, characterized in that, to simplify the design and operation of the device, the loading the capacitance through the discharge capacitance is connected in series with the systems for creating and measuring vacuum, performed in the vessel's vessel with mercury, communicating with the vacuum measurement system through a flexible cable lang with a transparent measuring tube. Sources of information taken into account in the examination 1.Patent of France no. 1474795, cl. G 01 N 9/02, 1969.

2. USSR author's certificate number 175705, cl. G 01 N 9/02, 1968 (prototype).