SU486271A1 - Device for injecting a liquid sample into a gas chromatograph - Google Patents

Device for injecting a liquid sample into a gas chromatograph

Info

Publication number
SU486271A1
SU486271A1 SU1907997A SU1907997A SU486271A1 SU 486271 A1 SU486271 A1 SU 486271A1 SU 1907997 A SU1907997 A SU 1907997A SU 1907997 A SU1907997 A SU 1907997A SU 486271 A1 SU486271 A1 SU 486271A1
Authority
SU
USSR - Soviet Union
Prior art keywords
liquid sample
injecting
gas chromatograph
sample
pipe
Prior art date
Application number
SU1907997A
Other languages
Russian (ru)
Inventor
Юрий Александрович Кованько
Игорь Габриэлович Попов
Original Assignee
Предприятие П/Я А-3481
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-3481 filed Critical Предприятие П/Я А-3481
Priority to SU1907997A priority Critical patent/SU486271A1/en
Application granted granted Critical
Publication of SU486271A1 publication Critical patent/SU486271A1/en

Links

Description

1one

Известно устройство дл  ввода жидкой пробы в газовый хроматограф, содержащее нагреватель , испарительную камеру с каналами дл  подачи жидкой пробы и вывода ее иаров и патрубок дл  транспортировки пароз в потоке газа-носител .A device is known for introducing a liquid sample into a gas chromatograph containing a heater, an evaporation chamber with channels for supplying a liquid sample and withdrawing its vials and a pipe for transporting steam in a carrier gas stream.

Недостатком известного устройства  вл етс  то, что при вводе больших количеств раздел емого жидкого продукта и его испарении происходит резкое увеличение давлеВИЯ в газовой системе на входе колонки, отрицательно вли ющее на работу хроматографа .A disadvantage of the known device is that when large quantities of a separated liquid product are introduced and evaporated, a sharp increase in pressure in the gas system at the column inlet occurs, which adversely affects the operation of the chromatograph.

Целью изобретени   вл етс  устранение колебаний давлени  в газовой системе хроматографа при вводе пробы.The aim of the invention is to eliminate pressure fluctuations in the gas chromatograph system when the sample is introduced.

Это достигаетс  тем, что конец патрубка вывода пара из испарительной камеры выполнен в виде сопла эжектора, а начало канала транспортировки пара в потоке газа-носител  - в виде диффузора этого эжектора.This is achieved by the fact that the end of the steam outlet pipe from the evaporation chamber is made in the form of an ejector nozzle, and the beginning of the channel for transporting steam in a stream of carrier gas is in the form of a diffuser of this ejector.

Таким образом, установка эжектора на выходе испарительной камеры позвол ет уменьшить возмущени  по давлению на входе колонки при вводе пробы.Thus, the installation of an ejector at the outlet of the evaporation chamber makes it possible to reduce pressure disturbances at the inlet of the column when the sample is introduced.

На чертеже приведено предложенное устройство .The drawing shows the proposed device.

Оно состоит из корпуса 1, в котором размещен теилоинерционный блок 2, змеевик 3 испарительной камеры с патрубком 4 дл  It consists of a housing 1, in which a teloinertial unit 2 is placed, a coil 3 of an evaporation chamber with a nozzle 4 for

ввода раздел емой жидкой пробы и каналом 5 дл  вывода ее паров из испарительной камеры 3. Эти патрубки проход т через крышки корпуса 1, на кoтopo.; укреплены нагреватели 6. Снаружи нагреватс:: 6 на трубе 7 укреплен змеевик 8 дл  подогрева газа-носител  с каналом 9 дл  входа газа и патрубком 10 дл  его выхода. Слой теплоизол ции 11 и наружна  рубашка 12 окружают змеевик 8. Канал 5 заканчиваетс  соплом 13 эжектора 14. К камере смеш 1вани  15 эжектора 14 иодведен канал 10. Диффузор 16 установлен в начальном участке канала 17 дл  транспортировки паров пробы с газом-носителем. Устройство работает следующим образом.the introduction of a separable liquid sample and a channel 5 for the discharge of its vapor from the evaporation chamber 3. These nozzles pass through the lids of housing 1, onto the barrel; Heaters 6 are fixed. On the outside of the heaters: 6, a pipe 7 is fixed to a coil 8 for heating the carrier gas with a channel 9 for gas inlet and a pipe 10 for its exit. Thermal insulation layer 11 and outer jacket 12 surround the coil 8. Channel 5 ends with ejector nozzle 13 14. Channel 10 is connected to mixing chamber 15 of ejector 14 and channel 10 is inserted. Diffuser 16 is installed in the initial part of channel 17 to transport sample vapors with carrier gas. The device works as follows.

Поданна  через патрубок 4 проба раздел емого продукта поступает в испарительную камеру и испар етс  в ней. Пары пробы через патрубок 5 и сопло 13 эжектора 14 с большой скоростью поступают в камеру смешивани  15, в которую через патрубок 9, змеевик 8 и патрубок 10 поступает подогретый газ-носитель. В камере смешивани  15 происходит перемешивание, и смесь паров пробы с газом-носителем поступает в диффузор 16, где происходит уменьшение скорости и переход кинетической энергии в поте;щиал зную энергию давлени . Из диффузора 16 ejie канал 17 смесь иостуиает на разделен 1е.The sample of the product to be divided, fed through the pipe 4, enters the evaporation chamber and evaporates therein. The sample vapor through the pipe 5 and the nozzle 13 of the ejector 14 at high speed enters the mixing chamber 15, into which a heated carrier gas enters through pipe 9, coil 8 and pipe 10. In the mixing chamber 15, mixing takes place, and the mixture of sample vapors with the carrier gas enters the diffuser 16, where the velocity decreases and the kinetic energy passes through the sweat, causing pressure energy to be known. From the diffuser 16 ejie duct 17, the mix is divided into 1e.

SU1907997A 1973-04-19 1973-04-19 Device for injecting a liquid sample into a gas chromatograph SU486271A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1907997A SU486271A1 (en) 1973-04-19 1973-04-19 Device for injecting a liquid sample into a gas chromatograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1907997A SU486271A1 (en) 1973-04-19 1973-04-19 Device for injecting a liquid sample into a gas chromatograph

Publications (1)

Publication Number Publication Date
SU486271A1 true SU486271A1 (en) 1975-09-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1907997A SU486271A1 (en) 1973-04-19 1973-04-19 Device for injecting a liquid sample into a gas chromatograph

Country Status (1)

Country Link
SU (1) SU486271A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174149A (en) * 1990-06-11 1992-12-29 Carlo Erba Strumentazione S.P.A. Process and device for the vaporization injection of liquid samples in gas chromatographic analysis apparatuses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174149A (en) * 1990-06-11 1992-12-29 Carlo Erba Strumentazione S.P.A. Process and device for the vaporization injection of liquid samples in gas chromatographic analysis apparatuses

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