CN219532574U - Autoclave sampling device - Google Patents

Abstract

The utility model discloses an autoclave sampling device which is arranged on an autoclave and extends into the autoclave, comprising: the sampling probe tube, one end of the sampling probe tube is positioned in the autoclave, the other end of the sampling probe tube is positioned outside the autoclave, and a sampling probe tube valve is arranged on the sampling probe tube; the buffer tank is communicated with the other end of the sampling probe tube; one end of the high-pressure air pipe is connected to the sampling probe pipe, and a high-pressure ventilation valve is arranged on the high-pressure air pipe; one end of the nitrogen pipe is connected to the top of the buffer tank; and one end of the sampling tube is connected to the bottom of the buffer tank, and a sampling valve is arranged on the sampling tube. The materials in the sampling probe tube can be purged through gas, no sample residue exists, and sampling is representative.

Description

Autoclave sampling device

Technical Field

The utility model belongs to a sampling structure, and particularly relates to an autoclave sampling device which can be used for equipment such as small test, pilot test or/and industrial production of chemical products.

Background

High pressure reactions are a common reaction process in chemical experiments. At present, many liquid chemical products produced in industry need to react in an autoclave, liquid samples need to be sampled and detected in the reaction process, and a common mode is that the liquid samples stretch into the autoclave to be sampled through a sampling probe. The chinese patent of the utility model of application No. 202121237339.5 discloses a chemical autoclave sampler, it pressurizes the chemical raw material through the autoclave, when sampling the chemical raw material in the autoclave, open a set of first solenoid valve, discharge the chemical raw material into the sampling tube through the pressure in the autoclave, open the second solenoid valve, discharge the chemical raw material in the sampling tube into the inside of sampling box, when the liquid level of chemical raw material in the sampling box contacted the liquid level detector, the second solenoid valve is automatic to be closed, open the relief valve, discharge the chemical raw material in the sampling box through the second relief pipe and take a sample, open another set of first solenoid valve, take a sample the chemical raw material of other positions in the autoclave, thereby improve the practicality of equipment. The chemical autoclave sampler can alleviate material injection to a certain extent, but needs the cooperation of a plurality of electromagnetic valves, a discharge valve, a liquid level detector and other electronic elements, and has high complexity; and the materials are easy to remain in the material, so that the material loss is large.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide an autoclave sampling device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an autoclave sampling device mounted on an autoclave and extending into the autoclave, comprising:

the sampling probe tube, one end of the sampling probe tube is positioned in the autoclave, the other end of the sampling probe tube is positioned outside the autoclave, and a sampling probe tube valve is arranged on the sampling probe tube;

the buffer tank is communicated with the other end of the sampling probe tube;

one end of the high-pressure air pipe is connected to the sampling probe pipe, and a high-pressure ventilation valve is arranged on the high-pressure air pipe;

one end of the nitrogen pipe is connected to the top of the buffer tank;

and one end of the sampling tube is connected to the bottom of the buffer tank, and a sampling valve is arranged on the sampling tube.

Optimally, one end of the sampling probe extends inwardly along the inner wall of the autoclave to the bottom of the autoclave cavity.

Further, the sampling probe comprises a sampling section and a buffer section which are communicated, the sampling section extends into the autoclave, and the buffer section is communicated with the buffer tank; the high-pressure gas pipe is connected to the joint of the sampling section and the buffer section, and the sampling probe valve is arranged on the buffer section.

Further, the high-pressure air pipe and the sampling section of the sampling probe are in the same straight line.

Optimally, a nitrogen purge valve is arranged on the nitrogen pipe.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: according to the high-pressure kettle sampling device, the sampling probe tube, the buffer tank, the high-pressure gas tube, the nitrogen gas tube and the sampling tube are matched, so that materials in the sampling probe tube can be purged through gas, no sample residue exists, and sampling is representative; the structure is simple, the design is reasonable, the manufacturing cost is low, and the use is convenient; sampling at normal pressure, easy control of sampling amount and no material loss.

Drawings

FIG. 1 is a schematic view of the structure of an autoclave sampling apparatus of the present utility model;

wherein: 1. an autoclave; 2. a buffer tank; 3. a high pressure gas pipe; 4. a nitrogen pipe; 5. sampling probe tube; 6. a sampling tube; 7. a high-pressure vent valve; 8. a nitrogen purge valve; 9. sampling probe valve; 10. and a sampling valve.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings.

The following description of embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the utility model may be practiced. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely referring to the directions of the drawings. Accordingly, directional terminology is used to describe and understand the utility model and is not limiting of the utility model. In addition, in the description, unless explicitly described to the contrary, the word "comprising" or "comprises" should be understood to mean inclusion of the element but not the exclusion of any other element.

The autoclave sampling device shown in fig. 1 is mounted on the autoclave and extends into the autoclave, and mainly comprises a buffer tank 2, a high-pressure air pipe 3, a nitrogen pipe 4, a sampling probe 5, a sampling pipe 6 and other structures.

Wherein, one end of the sampling probe tube 5 is positioned in the autoclave, the other end is positioned outside the autoclave, and a sampling probe tube valve 9 is arranged on the sampling probe tube; the buffer tank 2 is communicated with the other end of the sampling probe tube 5; one end of the high-pressure air pipe 3 is connected to the sampling probe pipe 5, and a high-pressure ventilation valve 7 is arranged on the high-pressure air pipe. In this embodiment, one end of the sampling probe 5 extends inwardly along the inner wall of the autoclave to the bottom of the autoclave cavity, such that one end of the sampling probe 5 is generally located below the liquid level in the autoclave and does not affect the normal operation of the stirring structure; specifically, the sampling probe 5 comprises a sampling section and a buffer section which are communicated, the sampling section extends into the autoclave, and a part of structure is positioned below the liquid level in the autoclave, and the buffer section is communicated with the buffer tank 2; the high-pressure air pipe 3 is connected to the connection part of the sampling section and the buffer section, and the sampling probe valve 9 is arranged on the buffer section. At this time, the high-pressure gas pipe 3 and the sampling section (mainly the part connected to the high-pressure gas pipe 3, the shape of the rest is not limited) of the sampling probe 5 are preferably on the same straight line; that is, the portion of the sampling section of the sampling probe 5 connected to the high-pressure gas pipe 3 is on the same straight line as the high-pressure gas pipe 3, and the shape of the remaining portion is not particularly limited as long as it can smoothly vent.

One end of the nitrogen pipe 4 is connected to the top of the buffer tank 2, on which a nitrogen purge valve 8 is installed. One end of the sampling tube 6 is connected to the bottom of the buffer tank 2, on which a sampling valve 10 is mounted.

The operating principle of the autoclave sampling device is as follows:

1. when the sampling state is to be obtained, each valve is in a closed state;

2. opening a sampling valve 10, switching a nitrogen purging valve 8, purging the buffer tank 2 with nitrogen, and closing the nitrogen purging valve 8 and the sampling valve 10 at the same time after purging is finished;

3. opening the sampling probe valve 9, and pressing residual air materials in the high-pressure air pipe 3 into the buffer tank 2 due to the fact that the pressure in the autoclave 1 is high; closing the probe sampling valve 9, opening the sampling valve 10, discharging the gas in the buffer tank 2, and closing the sampling valve 10; repeating the operation for several times until the residual air in the high-pressure air pipe 3 and the sampling probe pipe 5 is completely discharged;

4. the sampling probe valve 9 is opened, and the reaction liquid is pressed into the buffer tank 2 through the high-pressure gas pipe 3 and the sampling probe pipe 5 due to the high pressure in the autoclave 1; the sampling valve 10 is opened, the nitrogen purge valve 8 is slightly opened, and the reaction liquid flows out of the sampling tube 6 for sampling; after the sampling is finished, a nitrogen purging valve 4 is opened, and the residual materials in the buffer tank 2 are purged completely by utilizing nitrogen;

5. after the sampling is finished, the high-pressure vent valve 7 is opened, and the reaction liquid in the high-pressure air pipe 3 is returned to the autoclave 1;

6. closing the high-pressure vent valve 7, and placing the autoclave in a state to be sampled; the normally open high-pressure vent valve 7 is in a gas state.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (5)

1. An autoclave sampling device which is mounted on an autoclave and extends into it, characterized in that it comprises:

a sampling probe tube (5), wherein one end of the sampling probe tube (5) is positioned in the autoclave, the other end of the sampling probe tube is positioned outside the autoclave, and a sampling probe tube valve (9) is arranged on the sampling probe tube;

the buffer tank (2) is communicated with the other end of the sampling probe tube (5);

a high-pressure air pipe (3), wherein one end of the high-pressure air pipe (3) is connected to the sampling probe pipe (5), and a high-pressure ventilation valve (7) is arranged on the high-pressure air pipe;

a nitrogen pipe (4), wherein one end of the nitrogen pipe (4) is connected to the top of the buffer tank (2);

and one end of the sampling tube (6) is connected to the bottom of the buffer tank (2), and a sampling valve (10) is arranged on the sampling tube.

2. The autoclave sampling device according to claim 1, wherein: one end of the sampling probe tube (5) extends inwards to the bottom of the autoclave cavity along the inner wall of the autoclave.

3. The autoclave sampling device according to claim 1 or 2, characterized in that: the sampling probe tube (5) comprises a sampling section and a buffer section which are communicated, the sampling section extends into the autoclave, and the buffer section is communicated with the buffer tank (2); the high-pressure air pipe (3) is connected to the joint of the sampling section and the buffer section, and the sampling probe valve (9) is arranged on the buffer section.

4. The autoclave sampling device according to claim 3, wherein: the high-pressure air pipe (3) and the sampling section of the sampling probe pipe (5) are positioned on the same straight line.

5. The autoclave sampling device according to claim 1, wherein: and a nitrogen purging valve (8) is arranged on the nitrogen pipe (4).