CN216281436U

CN216281436U - Hazardous gas pipeline safety sampling system

Info

Publication number: CN216281436U
Application number: CN202122544224.7U
Authority: CN
Inventors: 王鹏; 张海鹏; 王大成; 李瑞刚; 王晓林; 魏军林; 马彦虎
Original assignee: Xinjiang Xinye Energy Chemical Co ltd
Current assignee: Xinjiang Xinye Energy Chemical Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-04-12
Anticipated expiration: 2031-10-22

Abstract

A safety sampling system for hazardous gas pipelines comprises a process operation pipeline, a torch pipeline in a district, a replacement gas discharge pipeline, a valve I, a valve II, a sampling pipeline, a valve III, a valve IV, a tee joint, a valve V and a sampling branch, wherein the ventilation discharge pipeline, the sampling pipeline and the sampling branch are connected through the tee joint; the valve I and the valve II are sequentially connected to a displacement gas discharge pipeline; the valve III and the valve IV are sequentially connected to a sampling pipeline; the valve V is connected to the sampling branch. The utility model is connected with the torch pipeline in the battery compartment through the replacement gas discharge pipeline, and the replacement gas can be discharged into the torch pipeline in the battery compartment for incineration treatment, thereby solving the problem that the existing sampling system directly discharges the replacement gas and causes harm to sampling personnel and site environment.

Description

Hazardous gas pipeline safety sampling system

Technical Field

The utility model relates to a gas pipeline sampling system, in particular to a hazardous gas pipeline safety sampling system.

Background

In the chemical production process, the analysis of process indexes plays an important role in guiding production. The process analysis needs to be carried out on the site of chemical production to collect samples, and when the gas pipeline is sampled, in order to ensure the sampling accuracy, the gas in the sampling pipe needs to be replaced so as to eliminate the influence of the gas in the sampling pipe on the samples. The hazardous gas in the sampling tube is directly discharged to the air in the current sampling system usually, and this kind of processing mode all can cause adverse effect to sampling personnel's safety and sample site environment, and the sampling point often has the potential safety hazard when the climbing sample on the platform more than 2 meters apart from ground.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the existing gas pipeline sampling system directly discharges hazardous replacement gas and has overhigh sampling point, the utility model aims to provide a hazardous gas pipeline safety sampling system.

In order to achieve the purpose, the utility model adopts the following technical scheme: a safety sampling system for a hazardous gas pipeline comprises a process operation pipeline 1, a boundary area inner torch pipeline 2, a replacement gas discharge pipeline 3, a valve I4, a valve II 5, a sampling pipeline 6, a valve III 7, a valve IV 8, a tee joint 9, a valve V10 and a sampling branch 11.

And the valve I4 and the valve II 5 are stop valves and are sequentially connected to the replacement gas discharge pipeline 3 through flanges.

And the valve III 7 and the valve IV 8 are ball valves and are sequentially connected to the sampling pipeline 6.

The valve V10 is a stop valve and is connected to the sampling branch 11 through a flange.

The replacement gas discharge pipeline 3, the sampling pipeline 6 and the sampling branch 11 are connected through a tee joint 9; the other end of the replacement gas discharge pipeline 3 is connected with the torch pipeline 2 in the battery compartment, and the other end of the sampling branch 11 is connected with the process operation pipeline 1; the sampling branch 11 leads to the surface.

Compared with the existing gas pipeline sampling system, the utility model has the following advantages.

1. According to the hazardous gas pipeline safety sampling system, the sampling pipeline is connected with the torch pipeline 2 in the district through the replacement gas discharge pipeline 3, so that replacement gas is discharged into the torch pipeline 2 in the district, and finally combustion treatment is carried out, and the harm of the replacement gas to sampling personnel and the site environment is avoided.

2. According to the hazardous gas pipeline safety sampling system, the sampling branch 11 is led to the ground, and the valve V10 is connected to the position close to the sampling branch 11, so that the climbing sampling of sampling personnel is avoided, and the sampling process is safer.

Drawings

Fig. 1 is a schematic diagram of a hazardous gas pipeline safety sampling system according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the utility model provides a hazardous gas pipeline safety sampling system which comprises a process operation pipeline 1, a boundary area flare pipeline 2, a replacement gas discharge pipeline 3, a valve I4, a valve II 5, a sampling pipeline 6, a valve III 7, a valve IV 8, a tee joint 9, a valve V10 and a sampling branch 11.

The valve I4 and the valve II 5 are stop valves and are sequentially connected to the replacement gas discharge pipeline 3 through flanges; the valve III 7 and the valve IV 8 are ball valves and are sequentially connected to the sampling pipeline 6; the valve V10 is a stop valve and is connected to the sampling branch 11 through a flange; the valve I4, the valve IV 8 and the valve V10 are normally opened and are closed during maintenance and isolation; the valve II 5 is normally closed, is opened for replacement before sampling, and is closed after replacement is finished; the valve III 7 is normally closed, is opened during sampling and is closed after sampling; the design of the double valve guarantees the sampling process and simultaneously considers the maintenance requirement.

The replacement gas discharge pipeline 3, the sampling pipeline 6 and the sampling branch 11 are connected through a tee joint 9; the other end of the replacement gas discharge pipeline 3 is connected with the torch pipeline 2 in the battery compartment, and the other end of the sampling branch 11 is connected with the process operation pipeline 1; the replacement gas discharge pipeline 3 connects the sampling path with the torch pipeline 2 in the district, so that the replacement gas is discharged into the torch pipeline 2 in the district, and finally, combustion treatment is carried out, thereby avoiding the harm of the replacement gas to sampling personnel and the site environment.

The sampling branch 11 leads to the ground, and the valve V10 is connected at the position close to the sampling branch 11, so that the sampling personnel are prevented from climbing for sampling, and the sampling process is safer.

The utility model provides a hazardous gas pipeline safety sampling system, which comprises the following working processes: leading the process gas in the process operation pipeline 1 to a sampling operation area through a sampling branch 11 and discharging the process gas into a torch pipeline 2 in a battery compartment by using a replacement gas discharge pipeline 3 for combustion and discharge; keeping valves I4, IV 8 and V10 normally open, normally closing valves II 5 and III 7, opening valve II 5 before sampling for 2-5 minutes, closing valve II 5 after replacement, connecting sampling air bag to the rear orifice of valve III 7, opening valve III 7 for sampling, and closing valve III 7 after sampling.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A hazardous gas pipeline safety sampling system comprises a process operation pipeline (1), a district internal flare pipeline (2), a replacement gas discharge pipeline (3), a valve I (4), a valve II (5), a sampling pipeline (6), a valve III (7), a valve IV (8), a tee joint (9), a valve V (10) and a sampling branch (11), and is characterized in that the replacement gas discharge pipeline (3), the sampling pipeline (6) and the sampling branch (11) are connected through the tee joint (9), the other end of the replacement gas discharge pipeline (3) is connected with the district internal flare pipeline (2), the other end of the sampling branch (11) is connected with the process operation pipeline (1), and the sampling branch (11) is led to the ground; the valve I (4) and the valve II (5) are sequentially connected to the displacement gas discharge pipeline (3); the valve III (7) and the valve IV (8) are sequentially connected to the sampling pipeline (6); the valve V (10) is connected to the sampling branch (11).

2. The hazardous gas pipeline safety sampling system of claim 1, wherein valve I (4) and valve II (5) are stop valves.

3. The hazardous gas pipeline safety sampling system of claim 1, wherein valve iii (7) and valve iv (8) are ball valves.

4. The hazardous gas pipeline safety sampling system of claim 1, wherein the valve v (10) is a stop valve.