Novel steam drainage device

Abstract

The utility model relates to a novel steam drainage device, and belongs to the technical field of power generation equipment in the metallurgical industry. According to the technical scheme, the top of a water storage tank (1) is connected with a high-temperature steam pipe network (9) above the water storage tank through a connecting pipeline (8), and the upper portion of the water storage tank (1) is connected with a drain valve (5) through a guide descending pipe (4); and the inlet position of the connecting pipeline (8) at the top of the water storage tank (1) is higher than the outlet position of the guide downcomer (4) at the upper part of the water storage tank (1). The steam drainage device has the advantages that drainage operation of the steam pipeline can be completed conveniently and efficiently, automatic control over steam drainage is achieved, an operator does not need to operate the drainage device frequently, the safety accident rate is reduced, the labor intensity of workers is relieved, use is safe, drainage efficiency is high, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a novel steam drain device, belonging to the technical field of power generation equipment in the metallurgical industry. Background Art

[0002] In the metallurgical industry, the use and collection of steam has always been an industry problem. Using steam to generate electricity is an important way. High-temperature steam transmission pipelines are equipped with steam traps. The basic function of steam traps (also called steam traps) is to discharge steam condensate and non-condensable gases such as air in heating equipment or steam pipelines, while preventing steam leakage to the greatest extent. For example, Chinese patents CN202321331656.2 are named "A steam pipeline steam trap" and CN201420618812.8 are named "An inverted bucket steam trap and a steam pipeline with the inverted bucket steam trap", etc. Due to structural problems, steam traps in the prior art usually discharge water and steam together, which can easily cause a large amount of steam loss. Even if the right steam trap is selected, steam will be lost with the steam trap when conveying water. Especially in winter, the amount of water discharged is too large, causing the steam trap to open frequently, which affects the life of the steam trap. In addition, it needs to be adjusted in time with the changes in the outside temperature, which increases the consumption of manpower and material resources. When the high-pressure water in the steam trap is discharged, the boiling point of the water will drop because the outside air pressure is lower than the steam network pressure, which will appear to be a steam trap leakage phenomenon, which is difficult to distinguish from normal leakage. Utility Model Content

[0003] The utility model aims to provide a novel steam drain device, which can conveniently and efficiently complete the draining operation of the steam pipeline and realize the automatic control of the steam drain. The operator does not need to frequently operate the drain device, which reduces the occurrence rate of safety accidents, reduces the labor intensity of workers, and solves the problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A novel steam trap device includes a water storage tank and a steam trap. The top of the water storage tank is connected to the high-temperature steam network above through a connecting pipe, and the upper part of the water storage tank is connected to the steam trap through a guide down pipe. The inlet position of the connecting pipe at the top of the water storage tank is higher than the outlet position of the guide down pipe at the upper part of the water storage tank. A steam trap valve 1 is provided on the connecting pipe, and an air release valve is provided on the guide down pipe. The steam trap is a float type steam trap, and a free float is provided in the float type steam trap body. A steam trap valve 2 is provided on the outlet pipe of the steam trap. When the high-temperature steam network begins to inflate, the initial temperature in the high-temperature steam network is low, and the amount of condensed water is large. It enters the connecting pipe below, and the water begins to be rapidly discharged into the water storage tank below. The water level in the water storage tank gradually rises. When the water level exceeds the highest point of the guide down pipe, the guide down pipe produces a siphon effect, the steam trap opens, and the water in the water storage tank begins to rapidly drop. After being discharged to the lowest point, the water automatically stops draining.

[0006] The air release valve is arranged at the highest point of the guide downcomer.

[0007] The free float in the float trap body is a stainless steel float, and a valve seat is provided below the free float. The free float matches the valve seat, the water inlet is located above the valve seat, and the water outlet is located below the valve seat. When condensed water exists in the float trap body, the free float floats up due to the buoyancy of the water, and the water starts to drain outward from the valve seat, and the second trap valve on the trap outlet pipe controls the drainage. When the water level in the water storage tank is lower than the lowest point of the guide downcomer, the siphon effect in the water storage tank is destroyed, thereby stopping the drainage, the free float falls into the valve seat, the trap is closed, and the water storage tank enters a new round of water storage and drainage process.

[0008] A drain valve is arranged below the water storage tank.

[0009] The end of the connecting pipe goes deep into the bottom of the water storage tank.

[0010] The beneficial effects of the utility model are: it can conveniently and efficiently complete the steam pipe drainage operation, realize the automatic control of steam drainage, the operator does not need to frequently operate the drainage device, the occurrence rate of safety accidents is reduced, the labor intensity of workers is reduced, the use is safe, the drainage efficiency is high, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] In the figure: water storage tank 1, drain valve 1 2, vent valve 3, guide downcomer 4, drain valve 5, drain valve 6, drain valve 2 7, connecting pipe 8, high-temperature steam pipe network 9, free float 10, valve seat 11. DETAILED DESCRIPTION

[0013] The present invention will be further described below through embodiments in conjunction with the accompanying drawings.

[0014] A novel steam trap device comprises a water tank 1 and a steam trap 5. The top of the water tank 1 is connected to the high-temperature steam network 9 above via a connecting pipe 8, and the upper part of the water tank 1 is connected to the steam trap 5 via a guiding down-pipe 4. The inlet position of the connecting pipe 8 at the top of the water tank 1 is higher than the outlet position of the guiding down-pipe 4 at the upper part of the water tank 1. A steam trap 2 is arranged on the connecting pipe 8, and an air release valve 3 is arranged on the guiding down-pipe 4. The steam trap 5 is a float type steam trap, and a free float 10 is arranged in the float type steam trap body. A steam trap 2 7 is arranged on the outlet pipe of the steam trap 5. When the high-temperature steam network begins to be inflated, the initial temperature in the high-temperature steam network is low, and the amount of condensed water is large. The water enters the lower connecting pipe 8, and the water begins to be rapidly discharged into the water storage tank 1 below. The water level in the water storage tank 1 gradually rises. When the water level exceeds the highest point of the guide downcomer 4, the guide downcomer 4 produces a siphon effect, the steam trap 5 opens, and the water in the water storage tank begins to drop rapidly. After being discharged to the lowest point, the drainage stops automatically.

[0015] The air release valve 3 is arranged at the highest point of the guide down pipe 4. When water flows in the guide down pipe 4, the air release valve 3 is in a closed state to ensure that the guide down pipe 4 is in a vacuum state, thereby ensuring the siphon effect. If there is air in the guide down pipe 4, it is easy to cause the vacuum state to fail to form, thereby failing to produce the siphon effect. Therefore, the air release valve 3 is installed above the guide down pipe 4 to effectively prevent such a phenomenon.

[0016] The free float 10 in the float trap body is a stainless steel float, and a valve seat 11 is provided below the free float. The free float 10 matches the valve seat 11, and the water inlet is located above the valve seat 11, and the water outlet is located below the valve seat 11. When there is condensed water in the float trap body, the free float 10 floats up due to the buoyancy of the water, and the water starts to drain outward from the valve seat 11, and the drain valve 27 on the outlet pipe of the drain valve 5 controls the drainage. When the water level in the water storage tank 1 is lower than the lowest point of the guide downcomer 4, the siphon effect in the water storage tank 1 is destroyed, thereby stopping the drainage, and the free float 10 falls into the valve seat 11, the drain valve is closed, and the water storage tank 1 enters a new round of water storage and drainage process.

[0017] A drain valve 6 is arranged below the water tank 1. There is no need to install a filtering device. Pollutants in the drain are deposited at the bottom of the water tank 1. The drain valve 6 can be opened and closed regularly. The tank body is made of carbon steel to ensure service life.

[0018] The end of the connecting pipe 8 goes deep into the bottom of the water storage tank 1, and the water inside the water storage tank 1 is always heated to ensure that even if the outside temperature is low, it will not cause ice to form in the tank, thereby affecting the hydrophobic effect.

Claims

1. A new type of steam trap, characterized in that: The invention comprises a water storage tank (1) and a steam trap (5); the top of the water storage tank (1) is connected to a high-temperature steam pipe network (9) above via a connecting pipe (8); the upper part of the water storage tank (1) is connected to the steam trap (5) via a guide down pipe (4); the inlet position of the connecting pipe (8) at the top of the water storage tank (1) is higher than the outlet position of the guide down pipe (4) at the upper part of the water storage tank (1); a steam trap valve 1 (2) is provided on the connecting pipe (8), and an air release valve (3) is provided on the guide down pipe (4); the steam trap (5) is a float type steam trap, and a free float (10) is provided in the float type steam trap body; and a steam trap valve 2 (7) is provided on the outlet pipe of the steam trap (5).

2. A novel steam trap device according to claim 1, characterized in that: The air release valve (3) is arranged at the highest point of the guide downpipe (4).

3. A novel steam trap device according to claim 1 or 2, characterized in that: The free float (10) in the float-type steam trap body is a stainless steel float, a valve seat (11) is provided below the free float, the free float (10) matches the valve seat (11), the water inlet is located above the valve seat (11), and the water outlet is located below the valve seat (11).

4. A novel steam trap device according to claim 1 or 2, characterized in that: A drain valve (6) is provided below the water storage tank (1).

5. A novel steam trap device according to claim 1 or 2, characterized in that: The end of the connecting pipe (8) penetrates into the bottom of the water storage tank (1).

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