Petrochemical tank field oil product pipeline tail end or low point residual oil collecting system

Abstract

The utility model belongs to the field of petrochemical oil storage and transportation, and particularly relates to a petrochemical tank field oil pipeline tail end or low point residual oil collecting system which comprises a plurality of process pipelines, the tail ends of the process pipelines are connected with purging branch pipes, the purging branch pipes are connected with a purging header pipe, and the process pipelines are connected with condensate draining branch pipes. The multiple condensate drainage branch pipes are sequentially provided with sight glasses and condensate drainage valves in the fluid flowing direction, the multiple condensate drainage branch pipes are arranged in parallel and connected with the condensate drainage header pipe, and the condensate drainage header pipe is connected with the dirty oil buried pipe; the residual oil collecting device is simple in design, can collect residual oil discharged from the tail end or the low point of a pipeline, and can effectively prevent the residual oil from being exposed in the air to cause environmental pollution.

Description

Technical Field

[0001] The utility model belongs to the field of petrochemical oil storage and transportation, in particular to a residual oil collection system at the end or low point of an oil pipeline in a petrochemical tank area. Background Art

[0002] The oil products in petrochemical storage tank areas are mainly gasoline, diesel, aromatics, etc. The residual oil at the end or low point of the pipeline is mainly used in the following situations: draining the pipeline after the hydraulic pressure test, draining the pipeline liquid before shutdown and maintenance, draining the pipeline during antifreeze, etc. The residual oil at the end or low point of the pipeline is generally installed with a gate valve and a pipe at the residual oil port to directly connect to the floor drain or discharge on site. Due to the high volatility of gasoline, diesel, aromatics and other oil products, the residual oil is easily diffused when exposed to the air, causing pollution to the environment. Therefore, it is urgent to design a residual oil collection system that can effectively solve the problem of the end or low point of the oil pipeline in the new petrochemical storage tank area. Utility Model Content

[0003] The purpose of the utility model is to provide a residual oil collection system at the end or low point of an oil pipeline in a petrochemical tank area to solve the problems raised in the above-mentioned background technology.

[0004] The purpose of this utility model is to adopt the following technical solutions to achieve:

[0005] The residual oil collection system at the end or low point of the oil pipeline in the petrochemical tank area proposed by the utility model includes multiple process pipelines, the ends of the process pipelines are connected to the corresponding purge branches, the purge branches are connected to the purge main pipe, the process pipelines are connected to the condensate drainage branch pipes, the multiple condensate drainage branch pipes are sequentially provided with sight glasses and condensate drainage valves along the direction of fluid flow, the multiple condensate drainage branch pipes are arranged in parallel and connected to the condensate drainage main pipe, and the condensate drainage main pipe is connected to the dirty oil buried pipe.

[0006] By means of the above technical solution, the utility model has the following advantages:

[0007] The utility model has a simple design and can collect the residual oil discharged from the end of the pipeline or a low point, and can also effectively prevent the residual oil from being exposed to the air and causing environmental pollution.

[0008] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a structural schematic diagram of a residual oil collection system at the end or low point of an oil pipeline in a petrochemical tank area.

[0010] [Reference Signs]

[0011] 1. Process pipeline; 2. Condensate drain valve; 3. Condensate drain branch pipe; 4. Condensate drain main pipe; 5. Sight glass; 6. Purge valve; 7. Purge branch pipe; 8. Purge main pipe. DETAILED DESCRIPTION

[0012] The features and exemplary embodiments of various aspects of the utility model will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without the need for some of these specific details. The following description of the embodiment is only to provide a better understanding of the utility model by showing an example of the utility model. In the accompanying drawings and the following description, at least part of the known and prior art is not shown to avoid unnecessary ambiguity to the utility model; and, for clarity, the size and shape of the part may be exaggerated. The features or characteristics described below can be combined in one or more embodiments in any suitable manner. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or quantity.

[0013] The utility model provides Figure 1 The petrochemical tank area oil pipeline end or low point residual oil collection system shown includes two process pipelines 1 (of course, in other embodiments, there can be multiple process pipelines 1), the ends of the process pipelines 1 are connected to the corresponding purge branch pipes 7, when the process pipeline 1 is overhauled, the purge valve 6 and the condensate drain valve 2 are opened at the same time, the purge branch pipe 7 is connected to the purge main pipe 8, the purge gas in the purge main pipe 8 enters the process pipeline 1 through the purge branch pipe 7, the process pipeline 1 and the condensate drain valve 2 are connected to the purge main pipe 8, and the purge gas in the purge main pipe 8 enters the process pipeline 1 through the purge branch pipe 7. The branch pipe 3 is connected, and the oil in the process pipeline 1 enters the condensate discharge branch pipe 3 under the pressure of the purge gas. The condensate discharge branch pipe 3 is provided with a sight glass 5 and a condensate discharge valve 2 in sequence along the direction of fluid flow. The sight glass 5 is used to observe the state of the oil in the condensate discharge branch pipe 3. If no oil passes through, the purge valve 6 and the condensate discharge valve 2 need to be closed. The condensate discharge branch pipes 3 are arranged in parallel and are all connected to the condensate discharge main pipe 4. The condensate discharge main pipe 4 is connected to the dirty oil buried pipe, and finally merge into the dirty oil buried pipe of the condensate discharge main pipe 4.

[0014] The above is only a preferred embodiment of the present invention. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, makes any simple modifications, equivalent changes and modifications to the above embodiments based on the technical essence of the present invention, which still fall within the scope of the technical solution of the present invention.

Claims

1. The residual oil collection system at the end or low point of the oil pipeline in the petrochemical tank area is characterized by: The invention comprises a plurality of process pipelines (1), the ends of the process pipelines (1) are connected to corresponding purge branches (7), the purge branches (7) are connected to a purge main pipe (8), the process pipelines (1) are connected to condensate drain branches (3), the plurality of condensate drain branches (3) are provided with sight glasses (5) and condensate drain valves (2) in sequence along the direction of fluid flow, the plurality of condensate drain branches (3) are arranged in parallel and connected to a condensate drain main pipe (4), and the condensate drain main pipe (4) is connected to a waste oil buried pipe.

Images