CN201364251Y

CN201364251Y - Sampler

Info

Publication number: CN201364251Y
Application number: CNU2008202187493U
Authority: CN
Inventors: 刘建锟; 杨涛; 胡长禄; 蒋立敬; 刘培基; 贾丽
Original assignee: China Petroleum and Chemical Corp; Sinopec Fushun Research Institute of Petroleum and Petrochemicals
Current assignee: China Petroleum and Chemical Corp; Sinopec Fushun Research Institute of Petroleum and Petrochemicals
Priority date: 2008-10-28
Filing date: 2008-10-28
Publication date: 2009-12-16
Anticipated expiration: 2018-10-28

Abstract

The utility model discloses a sampler, which comprises a cylinder body, a base and a piston unit, wherein the piston unit includes a connecting rod and two pistons respectively fixed at the two ends of the connecting rod. The piston unit is arranged in the cylinder body. An air chamber is arranged between one end of the cylinder body and the upper piston. A port connected with compressed air is arranged in the air chamber. The base is arranged at the other end of the cylinder body. A spring is arranged between the base and the lower piston. At least two material inlets and two material outlets are arranged at the positions of the cylinder body corresponding to the lower piston when the piston unit is at the upper limit position. When the piston unit is at the lower limit position, the material inlets and the material outlets are arranged between the two pistons of the piston unit. The utility model has the advantages that the structure is simple, the operation is flexible, the application scope is wide and the like, the sampler can be used for sampling the samples of the hydrology, the hygiene and the environmental protection monitoring and the sampler is especially suitable for sampling the samples of the fluidized bed reactor.

Description

A kind of sampling thief

Technical field

The utility model relates to a kind of sampling thief, can be used for the collection of various fluid samples, as is used for the sampling thief of polyphasic flow fluidized bed reactor reaction mass.

Background technology

Fluid comprises one or more in the gas, liquid, solid, needs the various character of convection cell to measure in many cases, because the requirement of analysis test method needs fluid samples collection before measurement.For example in fluidized system, need measure the multiple physical quantity in the system, wherein phase content is one of important transmission characteristic of fluidized bed.The measurement of gas, liquid, solid phase content has crucial effect for holding and being familiar with the fluidized bed characteristic.The measuring method of traditional in the past phase content comprises that conducting probe or probe, light transmitting fiber, gamma ray absorption or theory and semiempirical formula are calculated and CFD methods such as (Fluid Mechanics Computations) is measured or estimates, but all exist tangible deficiency and defective, the result is difficult to true the measurement and the reaction phase content.Simultaneously, said method also can't be examined or check other character of fluid, as the deactivation law of catalyzer, and the abrasion examination of catalyzer etc.

Summary of the invention

At the deficiencies in the prior art, the utility model provides a kind of sampling thief, can gather various fluid samples simply, and then carries out analytical test easily.Be specially adapted to the collection of heterogeneous fluidized bed inner fluid material.

The utility model sampling thief comprises parts such as cylinder body, base and piston set, piston set comprises connecting link and two pistons fixing with the connecting link two ends, piston set is arranged on cylinder interior, between cylinder body one end and the upper end piston air chamber is set, the interface that air chamber setting is connected with pressurized air, the cylinder body other end is provided with base, between base and the lower end piston spring is set, the cylinder body place of the lower end piston correspondence when piston set is positioned at upper limit position is provided with at least two material import and exports, piston set when the lower position material import and export between two pistons of piston set.

Material import and export is preferably 2～6, evenly is arranged on the cylinder body by symmetric position.

Two pistons can be hard the contacts with sealing between the cylinder body, and piston both sides and cylinder contact length suitably extend, directly sealing; Also can be soft seal, encircle piston both sides embedding O shape.

The base by thread ways of connecting is connected with the cylinder body lower end.

Compared with prior art, advantages such as having of sampling thief of the present utility model is simple in structure, easy to use, applied range can be used for the sample collecting of the hydrology, health, environmental protection prison side.Have following advantage when taking a sample especially for fluidized-bed reactor:

(1) overcome when sampling, be difficult for control flexibly in fluid bedreactors inside, and the not representative shortcoming of sampling.

(2) sampling thief can be regulated length neatly on demand sampling with representing.

(3) utilize this sampler, can gather required sample, carry out as the examination of catalyst deactivation rule, researchs such as attrition of catalyst examination.

Description of drawings

Fig. 1 is the structural representation of a kind of concrete structure sampling thief of the utility model.

Fig. 2-1 and Fig. 2-2 take out the knot of catalyst sample and fresh catalyst sample than (Fig. 2-1 is fresh catalyst, and Fig. 2-2 is the catalyzer that takes out) for using the utility model sampling thief to carry out certain fluidized-bed reactor from reactor.

Each structure label is among Fig. 1: 1-pressurized air entry and exit 2-sampling, thief hatch 3-base 4-cylinder body 5-spring 6-piston rod 7-upper end piston 8-connecting thread

Embodiment

For further setting forth concrete feature of the present utility model, will be illustrated in conjunction with the accompanying drawings.In conjunction with the accompanying drawings 1,

Architectural feature of the present utility model and principle of work are as follows:

When the utility model is used for the fluid sample collection, will be immersed in the sampling location of reactor by the sampling thief that straight-bar connects, piston is to be moved up and down by pressurized air control, specifically comprises the steps:

1, air inlet, pressurized air enters air chamber, and piston set promotes spring and moves down, and fluid sample enters in the sampling thief.

2, air chamber is discharged in exhaust, pressurized air, spring reset, and piston set is moved under spring action, and sample is imported and exported and is mended the lower end piston closes, and fluid sample is retained in the sampling thief.

3, sampling is taken out sampling thief from reactor, feeds pressurized air once more, and piston moves down, and the sample that is retained in the sampling thief is taken out.

4, reset, after sample is taken out, clean in case of necessity, pressurized air is discharged in the air chamber then, and spring reset, sampling thief are treated to use next time.

Use the utility model sampling thief, can take a sample, measure its phase content really and accurately in fluidized bed inside.Simultaneously, utilize this sampler, can gather required sample, carry out as the examination of catalyst deactivation rule, researchs such as attrition of catalyst examination.

Further the result of use of the utility model sampling thief is described below in conjunction with specific embodiment.

Embodiment-1

According to taking a sample fluidized-bed reactor diameter 160mm, high 3m in the heterogeneous fluidized bed sampling thief of the utility model shown in Figure 1 fluid bedreactors; Interior admission space is the spheric catalyst of 30L, and gas, liquid are entered by reactor bottom, with the abundant fluidisation of catalyzer.From the reactor bottom distributor, every interval 800mm selects three different height, will be immersed in the desired area of reactor by the sampling thief that straight-bar connects, and piston is to be moved up and down by pressurized air control.1, air inlet, piston moves down, sampling; 2, exhaust, spring reset is protected sample; 3, air inlet, piston moves down, sampling; 4, exhaust, spring reset is finished all processes of sampling.

The sample of different extraction is carried out the calculating of phase content, draw the solid holdup of three samples, judge that thus reactor is evenly distributed vertically, fluidisation fully waits state.

Can also utilize this sampling thief that reactor is carried out the radially mensuration of phase content.

Embodiment-2

Identical with embodiment-1, the sample that takes out is carried out wear test, the fresh catalyst before finding and loading carries out contrast as shown in Figure 2.

Table fresh catalyst and the contrast of sampling catalyst property

From the contrast as can be seen, the catalyzer raw material and the sampling catalyst property contrast, this has also better illustrated the practicality of the utility model sampling thief.

Claims

1, a kind of sampling thief, it is characterized in that sampling thief comprises cylinder body, base and piston set, piston set comprises connecting link and two pistons fixing with the connecting link two ends, piston set is arranged on cylinder interior, between cylinder body one end and the upper end piston air chamber is set, the interface that air chamber setting is connected with pressurized air, the cylinder body other end is provided with base, between base and the lower end piston spring is set, the cylinder body place of the lower end piston correspondence when piston set is positioned at upper limit position is provided with at least two material import and exports, piston set when the lower position material import and export between two pistons of piston set.

2,, it is characterized in that material import and export is arranged on the cylinder body by symmetric position according to the described sampling thief of claim 1.

3,, it is characterized in that hard contact sealing or the soft seal of being sealed between two pistons and the cylinder body according to the described sampling thief of claim 1.