CN217605400U

CN217605400U - Airtight sampling device of toxic gas

Info

Publication number: CN217605400U
Application number: CN202220039192.7U
Authority: CN
Inventors: 刘冰; 张会君; 王珩; 孙俊润; 韩祺祺
Original assignee: Dezhou Shihua Chemical Co Ltd
Current assignee: Dezhou Shihua Chemical Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-10-18
Anticipated expiration: 2032-01-06

Abstract

The utility model discloses an airtight sample chemical examination technical field of toxic gas especially relates to an airtight sampling device of toxic gas, including airtight sample piping, sewage pipes and washing system, sewage pipes is connected to airtight sample piping one end, and the washing system is connected to the other end, connects airtight sample piping through the sight glass below, and the pipe connection washing system, thick chloroethylene gas goes the washing system in the sample piping, absorbs toxic gas.

Description

Airtight sampling device of toxic gas

Technical Field

The utility model relates to an airtight sampling chemical examination technical field of toxic gas especially relates to an airtight sampling device of toxic gas.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Taking the toxic gas of vinyl chloride as an example: acetylene and hydrogen chloride gas are mixed according to a molar ratio of 1:1 (excessive hydrogen chloride in actual production) and then are fed into a VCM reactor to react at a reaction temperature of 80-180 ℃ under the action of a catalyst to generate crude vinyl chloride. The reacted crude chloroethylene contains gases such as nitrogen, chloroethylene, acetylene, hydrogen chloride, hydrogen, oxygen and the like, wherein the content of acetylene is required to be less than or equal to 2.5 percent, the content of acetylene is reduced by 3 to 5 percent, the content of acetylene is high, the rectification load is high, the raw material waste is caused by the high content of hydrogen chloride, the water alkali washing load is high, and the conversion content of acetylene is increased due to the low content of hydrogen chloride.

The existing sampling mode adopts DN25 double valves for sampling, the sampling pipeline is connected through a rubber tube, the valve is opened to collect gas in a sample bottle, the sampling mode easily generates toxic gas leakage, the gas alarm instrument is frequently triggered to alarm, and meanwhile, vinyl chloride toxic gas is easily sucked in the sampling process of sampling personnel, so that the physical health is harmed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provided an airtight sampling device of toxic gas, when improving the back sample, only need open sample connection department valve, use the needle tubing sample, do not have thick vinyl chloride gas leakage during, can not trigger the toxic gas alarm appearance and report to the police, operate simple safety fast.

In order to achieve the purpose, the utility model adopts the following technical measures:

the utility model provides a poisonous airtight sampling device of gas, includes airtight sample pipeline, sewage pipes and washing system, sewage pipes is connected to airtight sample pipeline one end, and washing system is connected to the other end.

According to a further technical scheme, the sampling device further comprises a sight glass and a sewage discharge valve, and the connecting position of the closed sampling pipeline and the sewage discharge pipeline is located on a pipeline between the sight glass and the sewage discharge valve.

According to a further technical scheme, the sampling device further comprises a reactor, a reactor feeding hole and a reactor discharging hole, the reactor feeding hole is formed in the top of the reactor, the reactor discharging hole is connected to the bottom of the reactor, and the reactor discharging hole is communicated with a sewage discharge pipeline.

According to a further technical scheme, the sampling device further comprises a sight glass valve, one end of the sight glass valve is connected with a sight glass, and the other end of the sight glass valve is connected with a discharge hole of the reactor.

According to the further technical scheme, a gas flow observation port is arranged on the vertical pipeline of the closed sampling pipeline.

In a further technical scheme, the light ball is placed inside the gas flow observation port.

According to the technical scheme, a pipeline between the gas flow observation port and the washing system is provided with a closed sampling valve and a closed sampling port, one end of the closed sampling valve is connected with the gas flow observation port, and the other end of the closed sampling valve is connected with the closed sampling port.

According to a further technical scheme, scales are marked outside the gas flow observation port.

According to a further technical scheme, the closed sampling port is a rubber plug type sampling port.

According to the technical scheme, the closed sampling port is fixed on the closed sampling pipeline through a nut, and the nut of the closed sampling port is provided with a round hole.

The utility model discloses compared with prior art have following advantage:

(1) Connect airtight sample pipeline through the sight glass below, the water washing system is connected to the pipe connection, and thick vinyl chloride gas goes the water washing system in the sample pipeline, absorbs toxic gas.

(2) The airtight sampling pipeline is additionally provided with a gas flow observation port, a rubber plug type sampling port and a valve, so that the observation is facilitated.

(3) Through the viewing aperture of gas flow, through the design, mark the scale, can float the height through the bobble, judge the gas flow rate, can see the bobble through the viewing aperture and float, show that there is gas flow, can carry out the sampling operation.

(4) The rubber plug type sampling port is fixed on a sampling pipeline through a nut by using a specially-made rubber plug, a valve at the sampling port is only required to be opened during sampling, a gas sampling needle tube is used, and a needle head is inserted into the rubber plug to draw reaction gas into the needle tube. The needle tube is used for sampling, crude chloroethylene gas is not leaked in the period, the toxic gas alarm instrument is not triggered to alarm, and the operation is quick, simple and safe.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a conventional toxic gas sealed sampling device;

FIG. 2 is a schematic view of the toxic gas airtight sampling device of the present invention;

fig. 3 is the schematic view of the sampling port mounting structure of the present invention.

In the figure, 1-reactor feed inlet, 2-reactor, 3-reactor discharge outlet, 4-sight glass valve, 5-sight glass, 6-blowdown valve, 7-closed sampling pipe, 8-blowdown port, 9-gas flow observation port, 10-closed sampling valve, 11-closed sampling port, 12-water washing system, 13-double-valve sampling port and 14-blowdown pipe.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The structure of the present invention will be further described with reference to fig. 1-3.

Fig. 1 is a prior art toxic gas closed sampling device, which adopts a double-valve type sampling port 13 for sampling in the prior art, and fig. 2 is a toxic gas closed sampling device improved in the present application, as shown in fig. 1-2, in order to solve the above problems, the present invention provides a toxic gas closed sampling device, which comprises a closed sampling pipeline 7, a sewage discharge pipeline 14, a water washing system 12, a sight glass 5 and a sewage discharge valve 6;

one end of the closed sampling pipeline 7 is connected with a sewage discharge pipeline 14, and the other end of the closed sampling pipeline is connected with a water washing system 12;

the connecting position of the closed sampling pipeline 7 and the sewage discharge pipeline 14 is positioned on the pipeline between the sight glass 5 and the sewage discharge valve 6;

sampling device still includes reactor 2, reactor feed inlet 1 and

reactor discharge gate

3, 2 tops in reactor set up reactor feed inlet 1, and reactor discharge gate 3 is connected to the bottom, and reactor discharge gate 3 is linked together with sewage pipes 14, and such purpose is: the reactor discharge is communicated with a sewage pipeline.

According to a further technical scheme, the sampling device further comprises a sight glass valve 4, one end of the sight glass valve 4 is connected with a sight glass 5, and the other end of the sight glass valve 4 is connected with a discharge hole 3 of the reactor;

according to the further technical scheme, a gas flow observation port 9 is arranged on a vertical pipeline of the closed sampling pipeline 7, and a light ball is placed inside the gas flow observation port 9.

And a pipeline between the gas flow observation port 9 and the water washing system 12 is provided with a closed sampling valve 10 and a closed sampling port 11, one end of the closed sampling valve 10 is connected with the gas flow observation port 9, and the other end of the closed sampling valve is connected with the closed sampling port 11.

The gas flow observation port 9 is marked with scales on the outside.

The gas flow observation port 9 is made of transparent material.

The scheme has the advantages that: the gas flow observation port is designed and marked with scales, and the gas flow rate can be judged through the floating height of the small ball.

Normally, the sight glass valve 4 is normally opened in the production process, and blowdown valve 6 normally closes, when preparing the sample, opens airtight sampling valve 10, and airtight sample piping 7 is got into to thick vinyl chloride gas, through gas flow viewing aperture 9, if see light bobble and float, show that there is the gas flow, can carry out the sample operation.

The closed sampling port 11 is a rubber plug type sampling port which adopts a specially-made rubber plug.

And a valve 10 is arranged at the closed sampling port 11.

Fig. 3 is a schematic view of a mounting structure of a sealed sampling port, as shown in fig. 3, the sealed sampling port 11 is fixed on the sealed sampling pipeline 7 through a nut, a gas sampling needle tube is adopted during sampling, a needle is inserted into a rubber plug, and reaction gas is pumped into the needle tube.

A round hole with a proper diameter is reserved on the screw cap of the closed sampling port, so that the gas sampling needle can be conveniently inserted into the rubber plug.

For example, the sampling port diameter is 10mm and the sampling port nut bore diameter is 5mm.

The advantage of above-mentioned scheme lies in, when improving the back sample, only need open sample connection department valve, uses the needle tubing sample, does not have thick chloroethylene gas leakage during, can not trigger the toxic gas alarm appearance and report to the police, and the operation is simple safety fast.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. The toxic gas closed sampling device is characterized by comprising a closed sampling pipeline, a sewage discharge pipeline and a water washing system, wherein one end of the closed sampling pipeline is connected with the sewage discharge pipeline, and the other end of the closed sampling pipeline is connected with the water washing system; the airtight sampling pipeline is characterized in that a gas flow observation port is installed on a vertical pipeline of the airtight sampling pipeline, an airtight sampling valve and an airtight sampling port are installed on a pipeline between the gas flow observation port and the washing system, the airtight sampling port is a rubber plug type sampling port and is fixed on the airtight sampling pipeline through a nut, one end of the airtight sampling valve is connected with the gas flow observation port, and the other end of the airtight sampling valve is connected with the airtight sampling port.

2. A sealed toxic gas sampling apparatus as claimed in claim 1, wherein the sampling apparatus further comprises a sight glass and a waste valve, and the sealed sampling pipe and the waste pipe are connected to each other at a position on the pipe between the sight glass and the waste valve.

3. A sealed toxic gas sampling device as claimed in claim 1, wherein the sampling device further comprises a reactor, a reactor inlet and a reactor outlet, the reactor inlet is disposed at the top of the reactor, the reactor outlet is connected to the bottom of the reactor, and the reactor outlet is communicated with a sewage pipeline.

4. A closed toxic gas sampling device as claimed in claim 1, wherein the sampling device further comprises a sight glass valve, one end of the sight glass valve is connected with the sight glass, and the other end of the sight glass valve is connected with the discharge port of the reactor.

5. A closed toxic gas sampling device as claimed in claim 1 wherein the gas flow port has a light weight bead disposed therein.

6. A sealed toxic gas sampling apparatus as claimed in claim 1, wherein the gas flow port is marked on the outside with a scale.

7. A sealed toxic gas sampling apparatus as claimed in claim 1, wherein the screw cap is provided with a circular hole.