CN204201495U - Chemical Pipeline Protecting Jacket - Google Patents

Abstract

This utility model relates to a chemical raw material transportation pipeline, specifically a chemical pipeline safety cover, including an upper cover and a lower cover. The edges of the upper and lower covers are connected by bolts to form a cavity for accommodating the chemical pipeline connector. The upper cover is equipped with a gas leak detection tube and an exhaust pipe communicating with the cavity. The exhaust pipe is connected to a negative pressure fan, and the upper cover is also equipped with a one-way valve. The beneficial effect of this utility model is that it can promptly handle toxic gases leaking at the pipeline connection.

Description

Chemical pipeline safety cover

technical field

The utility model belongs to a chemical raw material transportation pipeline, in particular to a chemical pipeline safety cover.

Background technique

In chemical production, many chemical raw materials will produce toxic gases during the preparation process. For example, the ore contains sulfur elements, and there will be gases containing sulfur elements during the extraction process. Usually, the gases containing sulfur elements are toxic gases, and many toxic gases are easily soluble. For water, it is difficult to separate the toxic gas at the source. Only the solution with toxic gas can be transported together through the pipeline. Since the pipeline needs to be connected in multiple sections to form a complete transportation channel, it is very difficult in the connection part. Leaks are prone to occur. Once leaked, toxic gas will accumulate around the connection part, which will easily affect the health of the staff.

Utility model content

The purpose of the utility model is to provide a pipeline safety cover capable of timely treating the poisonous gas at the leakage of the pipeline connection.

In order to solve the above problems, the chemical pipeline safety cover provided by the utility model includes an upper casing and a lower casing, and the edges of the upper casing and the lower casing are connected by bolts to form a cavity for accommodating the connection head of the chemical pipeline. A detection tube for gas leakage is arranged on the upper casing, and an exhaust pipe communicating with the cavity is arranged on the upper casing. The exhaust pipe is connected to a negative pressure fan, and the upper casing is also provided with a one-way valve.

When the chemical pipeline safety cover of this scheme is in use, the upper cover and the lower cover are buckled at the joint of the chemical pipeline to form a cavity at the joint, and the exhaust pipe of the upper cover is connected to the upper fan for detection. The tube is filled with a detection substance for detecting gas. The detection tube communicates with the cavity, and the air pressure balance in the cavity is maintained through the one-way valve during the process of extracting the leaked gas through the negative pressure fan.

The utility model has the advantages that: by setting the safety cover at the connection head, when the connection of the chemical pipeline leaks. Firstly, it is detected by the detection object in the detection tube. Once the detection tube detects a leak, the negative pressure fan is turned on to extract the cavity, which can play the role of emergency treatment of leakage and detection of gas before maintenance.

As a preferred solution, a sealing strip is provided between the upper casing and the lower casing; so that before the blower is not turned on, the leakage of the gas charging connection can be prevented.

As an optimal solution, the detection tube is threadedly connected to the upper casing; when the detection object filled in the detection tube needs to be replaced, the detection tube can be unscrewed directly to replace the detection object.

Finally, the lower casing is provided with a liquid pipe. Since a small amount of liquid seeps out from the connection of chemical pipelines, it is collected through the liquid pipe of the lower casing for unified treatment.

Description of drawings

Figure 1 is a schematic structural diagram of a chemical pipeline safety cover;

Fig. 2 is a cross-sectional view of a chemical pipeline safety cover.

List of reference signs: upper casing 1, one-way valve 2, chemical pipeline 3, detection pipe 4, exhaust pipe 5, negative pressure fan 6, lower casing 7, liquid pipe 8, cavity 9.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further described:

The chemical pipeline safety cover shown in Figure 1 and Figure 2 includes an upper casing 1 and a lower casing 7, and the edges of the upper casing 1 and the lower casing 7 are connected by bolts to form a cavity for accommodating the connection head of the chemical pipeline 3 9; The detection tube 4 provided on the upper casing 1 is used to detect gas leakage. Threaded holes are set on the upper case 1, external threads are provided at the connecting end of the detection pipe 4, and the detection pipe is threadedly connected on the upper case, and the upper case 1 is also provided with an exhaust pipe 5 communicating with the cavity 9, the exhaust The pipe 5 is connected with a negative pressure fan 6 , and the upper casing 1 is also connected with a check valve 2 , and the check valve 2 communicates with the cavity 9 .

When the chemical pipeline safety cover of this program is in use, the upper casing 1 and the lower casing 7 are buckled at the joint of the chemical pipeline 3, a cavity 9 is formed at the joint, and the exhaust pipe 5 of the upper casing 1 Connect the negative pressure fan 6; the detection tube 4 communicates with the cavity 9, and fill the detection tube 4 with a detection object for detecting gas. During the process of extracting the leakage gas through the negative pressure fan 6 , the air pressure balance in the cavity is maintained by the check valve 2 .

There is a sealing strip between the upper casing 1 and the lower casing 7; before the negative pressure fan 6 is turned on, the leakage of the gas charging connection can be prevented; the detection tube 4 is screwed to the upper casing 1; the detection tube needs to be replaced. When the detected object is detected, the detected object can be directly unscrewed to replace the detected object; the lower casing 7 is provided with a liquid pipe 8, and a filter plug is arranged inside the liquid pipe 8, because a small amount of liquid will seep out from the connection of the chemical pipeline 3 , collected through the liquid pipe 8 of the lower casing 7 for unified processing.

By setting a safety cover at the connection head, when the chemical pipeline connection leaks. Firstly, it is detected by the detection object in the detection tube. Once the detection tube detects a leak, the negative pressure fan is turned on to extract the cavity, which can play the role of emergency treatment of leakage and detection of gas before maintenance.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those skilled in the art, without departing from the structure of the utility model, some deformations and improvements can also be made, and these should also be regarded as For the scope of protection of the utility model, these will not affect the effect of the implementation of the utility model and the practicability of the patent.

Claims (4)

1. The chemical pipeline safety cover is characterized in that: it includes an upper casing and a lower casing, and the edges of the upper casing and the lower casing are connected by bolts to form a cavity for accommodating chemical pipeline connectors. The upper casing A detection tube for gas leakage is arranged on the top, and an exhaust pipe communicating with the cavity is arranged on the upper casing, and the exhaust pipe is connected with a negative pressure fan, and a check valve is also arranged on the upper casing. 2. The chemical pipeline safety cover according to claim 1, wherein a sealing strip is provided between the upper cover and the lower cover. 3. The chemical pipeline safety cover according to claim 2, wherein the detection tube is screwed to the upper casing. 4. The chemical pipeline safety cover according to claim 3, characterized in that: the lower cover is provided with a liquid pipe.