CN205350856U - Drainage device of gas pipeline - Google Patents

Abstract

The utility model discloses a drainage device of gas pipeline, including coal gas drain valve, one -way stop valve, drainage pans, terminal drain valve and terminal drain pipe that connects gradually and water seal pipe and the induction valve that is connected, the coal gas drain valve is connected with gas piping, and the intraductal storage of water seal has water, and the induction valve is connected with terminal drain valve. The utility model discloses a drainage device of gas pipeline, not high to the high space requirement in gas piping below, the institute is so that the installation, the water seal can effective isolated possible gas leakage in addition, position more than ground is generally established to water seal pipe suitable for reading, also convenient water intaking, whole operation process is also very simple, is fit for especially that the card is low -lying, the gas piping's in the hole drainage operation, solved the hole in coal gas drainage equipment space put and operate the safety problem.

Description

Gas pipeline drainage device

technical field

The utility model relates to a device used in the metallurgical industry to ensure drainage of gas pipelines in low-lying areas and pits, and to prevent leakage.

Background technique

At present, the gas pipelines of holding furnaces in rolling mills are all arranged in pits, and the gas pipelines are relatively close to the ground below. Since the bottom pit is at the low point of the gas pipelines, the water in the gas tends to collect in this area, causing the The equipment on the regional gas pipeline is often soaked in water, resulting in equipment failure. Due to the limitation of poor air flow in the pit, the manual intermittent drainage device combined with two valves is not suitable for installation in the pit because of its relatively poor sealing.

Utility model content

The utility model provides a drainage device for a gas pipeline, the purpose of which is to improve the sealing performance.

In order to achieve the above purpose, the technical solution adopted by the utility model is: gas pipeline drainage device, including gas drainage valve, one-way stop valve, drainage intermediate tank, terminal drainage valve, terminal drainage pipe and connected water seal pipe connected in sequence It is connected with the water delivery valve, the gas drain valve is connected with the gas pipeline, water is stored in the water seal pipe, and the water delivery valve is connected with the terminal drain valve.

The water seal pipe is arranged vertically, and the water column pressure corresponding to the vertical height of the water seal pipe is greater than the maximum pressure of the medium in the gas pipeline.

The upper end of the water-sealed pipe is provided with a water tank, and the lower end is connected with the water delivery valve.

The water-sealed pipe is provided with a pressure gauge.

The gas pipeline drainage device of the utility model has low requirements on the height and space below the gas pipeline, so it is easy to install. In addition, the water seal can effectively isolate possible gas leakage. The upper opening of the water seal pipe is generally located above the ground, which is also convenient for water intake , the whole operation process is also very simple, especially suitable for the drainage operation of gas pipelines in low-lying pits, and solves the problems of space placement and operation safety of gas drainage equipment in pits.

Description of drawings

This manual includes the following drawings, the contents shown are:

Fig. 1 is the structural representation of the gas pipeline drainage device of the present utility model;

Labeled in the figure:

1. Water supply faucet; 2. Water tank; 3. Overflow pipe; 4. Water seal pipe; 5. Pressure gauge; 6. Water delivery valve; 7. Exhaust valve; 8. Gas pipeline; 9. Gas drain valve; 10. One-way stop valve, 11. Drainage intermediate tank; 12. Terminal drain valve; 13. Drain outlet.

detailed description

Below, referring to the accompanying drawings, through the description of the embodiments, the specific implementation of the utility model will be further described in detail, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solutions of the utility model understanding and contribute to its implementation.

As shown in Figure 1, the utility model provides a gas pipeline drainage device, which includes a gas drainage valve 9, a one-way stop valve 10, a drainage intermediate tank 11, a terminal drainage valve 12 and a terminal drainage pipe connected in sequence Water seal pipe 4 and water delivery valve 6. One end of the gas drain valve 9 is connected with the gas pipeline 8, and the other end is connected with the one-way stop valve 10. One end of the terminal drain pipe is connected with the terminal drain valve 12, and the other end is used as the drain port 13. One end of the water delivery valve 6 is connected with the water seal pipe 4 , and the other end is connected with the water pipe used to connect the drain intermediate tank 11 and the end drain valve 12 to realize the connection with the end drain valve 12 . Water delivery valve 6, gas drain valve 9 and terminal drain valve 12 are valves that can be opened and closed.

Specifically, as shown in Figure 1, water is stored in the water-sealed pipe 4, the water-sealed pipe 4 is vertically arranged, and the water column pressure corresponding to the vertical height of the water-sealed pipe 4 is greater than the maximum pressure of the medium in the gas pipeline 8. pressure. In addition, the one-way stop valve 10 is used to prevent the water in the water-sealed pipe 4 from flowing back to the gas pipeline 8 when the gas drain valve 9 leaks.

As shown in FIG. 1 , the upper end of the water-sealed pipe 4 is provided with a water receiving tank 2 , and the lower end is connected with a water delivery valve 6 . The water filling tap 1 adds water to the water receiving tank 2, and the added water flows into the water seal pipe 4, and the water receiving tank 2 is also provided with an overflow pipe 3. The water-sealed pipe 4 is provided with a pressure gauge 5 for monitoring the water pressure in the water-sealed pipe 4 .

The usage method of the gas pipeline drainage device of the present utility model is as follows:

1. The state before draining, water supply tap 1, gas drain valve 9, exhaust valve 7 and terminal drain valve 12 are closed, water delivery valve 6 is open, water seal pipe 4 is filled with water, and the water level reaches the water receiving tank The mouth of the overflow pipe 3 on the 2;

2. When the gas pipeline 8 drains water, first close the water delivery valve 6 and open the end drain valve 12. When the water at the end drain valve 12 is drained, close the end drain valve 12, then open the gas drain valve 9, and turn off the gas after two minutes. Drain valve 9, open the end drain valve 12, when the water at the end drain valve 12 is drained, close the end drain valve 12, open the gas drain valve 9, repeat the switching operation of the gas drain valve 9 and the end drain valve 12, until the drainage is complete;

3. After the drainage is completed, keep the gas drain valve 9 and the end drain valve 12 closed, open the water delivery valve 6 and the exhaust valve 7, close the exhaust valve 7 after overflowing, open the replenishing faucet 1, and close the replenishing water when the overflow pipe 3 overflows faucet1.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as the various insubstantial improvements made by adopting the method concept and technical solution of the present utility model; within the scope of protection.

Claims (4)

1. The gas pipeline drainage device is characterized in that it includes a gas drain valve, a one-way stop valve, a drainage intermediate tank, a terminal drain valve and a terminal drain pipe connected in sequence, a water seal pipe and a water delivery valve, and the gas drain valve and the water supply valve are connected in sequence. The gas pipeline is connected, water is stored in the water-sealed pipe, and the water delivery valve is connected with the terminal drain valve. 2. The gas pipeline drainage device according to claim 1, characterized in that: the water seal pipe is arranged vertically, and the water column pressure corresponding to the vertical height of the water seal pipe is greater than the maximum pressure of the medium in the gas pipeline. 3. The gas pipeline drainage device according to claim 1 or 2, characterized in that: the upper end of the water-sealed pipe is provided with a water tank, and the lower end is connected to the water delivery valve. 4. The gas pipeline drainage device according to claim 3, characterized in that: said water seal pipe is provided with a pressure gauge.