Steam pipeline drain valve

Abstract

The utility model discloses a steam pipeline drain valve, and relates to the technical field of steam pipeline drain valves, the steam pipeline drain valve comprises a drain valve body and a drain valve bonnet, when the steam pipeline drain valve is used, the drain valve body is firstly connected with a pipeline through a left flange plate and a right flange plate, and when working equipment is just in a starting state, the drain valve bonnet is connected with the pipeline through the left flange plate and the right flange plate; at the moment, the internal temperature of the steam trap body is in a low state, the main material of the thermosensitive element is fusible alloy or thermosensitive insulating material, and the material has the characteristic that the physical property can change along with the change of the temperature, so that the thermosensitive element can form a self-operated switch controlled by the temperature, and the thermosensitive element can contract at the moment, so that the temperature of the steam trap body can be controlled. When condensate water enters the drain valve body through the drain valve body inlet, the second valve port is opened, then air in the drain valve body is discharged through the second valve port, so that quick starting of the drain valve body can be achieved, and when condensate water enters the drain valve body through the drain valve body inlet, the air can be discharged through the drain valve body outlet according to the principle.

Description

Technical Field

[0001] The utility model relates to the technical field of steam pipeline traps, in particular to a steam pipeline trap. Background Art

[0002] Steam trap is one of the most important industrial pipeline equipment. It is mainly used to discharge wastewater and impurities in the pipeline to ensure the normal operation of the pipeline system. The main function of the steam trap is to automatically discharge the condensed water generated in the system to prevent the condensed water from causing pipeline blockage and corrosion. Its working principle is to use the buoyancy of the float or float to control the opening and closing of the drain. When the water level inside the pipeline rises to a certain height, the float or float will be affected by the buoyancy, so that the drain is opened to discharge the wastewater and impurities in the pipeline. When the water level drops to a certain height, the drain will automatically close. According to different working principles and structural forms, steam traps can be divided into float steam traps, float steam traps, mechanical steam traps and other types. In short, steam traps are very important equipment in the pipeline system. It can ensure the normal operation of the pipeline system and effectively avoid pipeline blockage and corrosion. However, the internal structure of some existing steam pipeline traps is relatively complex and not simple enough, and there are many internal connecting components, which not only reduces the sensitivity of the trap and fails to discharge the condensed water inside the pipeline in time, but also may cause water hammer phenomenon in the pipeline, thereby preventing the working equipment from always operating under the best working conditions. Therefore, those skilled in the art provide a steam pipeline trap to solve the problems raised in the above background technology. Utility Model Content

[0003] The utility model aims to provide a steam pipeline trap to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A steam pipeline trap comprises a trap body and a trap cover; a trap body inlet is provided at the middle upper end of the left side of the trap body, and a trap body outlet is provided at the middle upper end of the right side of the trap body; a hollow float is provided at the middle lower side of the inner part of the trap body, and a first valve port is provided at the middle lower end of the right side of the trap body; a trap guide pipe is provided at the middle of the upper side of the first valve port; a left flange is provided at the left side of the trap body inlet; a right flange is provided at the right side of the trap body outlet, and a pipeline is provided at the middle of the right side of the right flange; a trap cover is provided at the upper side of the trap body, a second valve port is provided at the middle right side of the upper surface of the trap cover, and a thermal element is provided at the lower side of the second valve port; a filter is provided at the middle upper side of the inner part of the trap body, a ball cover fixing frame is provided at the lower side of the filter, and a ball cover is provided at the middle inner part of the ball cover fixing frame; a sewage outlet is provided at the middle lower end of the front side of the trap body.

[0006] Preferably, a steam trap valve cover is provided on the upper side of the steam trap valve body, a second valve port is provided inside the middle right side of the upper surface of the steam trap valve cover, and a thermal sensitive element is provided on the lower side of the second valve port; a filter screen is provided on the middle upper side of the interior of the steam trap valve body, a ball cover fixing frame is provided on the lower side of the filter screen, and a ball cover is provided inside the middle of the ball cover fixing frame; a sewage outlet is provided at the middle lower end of the front side of the steam trap valve body.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. First, connect the steam trap body to the pipeline through the left flange and the right flange. When the working equipment is just started, the internal temperature of the steam trap body is at a low state. The main material of the thermal element is fusible alloy or thermal insulating material, and these materials have the characteristic that the physical properties will change with the change of temperature, so that it can form a temperature-controlled self-operated switch. Therefore, the thermal element will shrink at this time, and the second valve port will open. Then the air inside the steam trap body will be discharged through the second valve port, so that the steam trap body can be quickly started. When condensed water enters the steam trap body through the steam trap body inlet, the air can be discharged through the steam trap body outlet according to the above principle, and then the condensed water will fall to the lower side of the steam trap body under the action of gravity, and then the hollow float will rise with the rise of the condensed water level on the lower side of the steam trap body until the hollow float is no longer in contact with the first valve port ... Water will be discharged through the first valve port. When hot condensed water or steam enters the interior of the steam trap body, the internal temperature of the steam trap body will increase, and then the thermistor will expand due to the heat, and then the second valve port will be closed. Then the hot condensed water will also fall to the lower side of the interior of the steam trap body under the action of gravity, and then the hollow float will float with the floating of the condensed water level, so that the opening of the first valve port can be adjusted, and then the condensed water will be discharged through the first valve port. When no condensed water enters the interior of the steam trap body, the hollow float will close the first valve port as the liquid level drops, and the first valve port is always below the condensed water level, so that a water seal can be formed, and steam will not leak. The device can quickly discharge the generated condensed water through the hollow float, so that the heating equipment will not have water accumulation, thereby obtaining higher thermal efficiency, having the characteristics of sensitive response and simple structure, and thus better avoiding the occurrence of water hammer, ensuring that the working equipment always operates under the best working conditions.

[0009] 2. The device will not be affected by changes in steam pressure, and the hollow float can float with the floating of the condensate level, so that the opening of the first valve port can be adjusted, thereby enabling the device to work continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The figure is a schematic diagram of the structure of a steam pipe trap.

[0011] Figure 2 It is a plan view of a steam pipe trap.

[0012] Figure 3 A schematic diagram of the explosion structure of a steam pipe trap.

[0013] Figure 4 This is a schematic diagram of the enlarged structure of point A in a steam pipe trap.

[0014] In the figure: 1-trap body, 2-trap body inlet, 3-trap body outlet, 4-hollow float, 5-first valve port, 6-trap flow guide pipe, 7-left flange, 8-right flange, 9-trap cover, 10-second valve port, 11-thermal element, 12-filter, 13-ball cover fixing bracket, 14-ball cover, 15-drainage outlet, 16-pipeline. DETAILED DESCRIPTION

[0015] See also Figures 1 to 4 In the embodiment of the utility model, a steam pipeline steam trap comprises a steam trap valve body 1 and a steam trap valve cover 9; a steam trap valve body inlet 2 is provided at the middle upper end on the left side of the steam trap valve body 1, and a steam trap valve body outlet 3 is provided at the middle upper end on the right side of the steam trap valve body 1; a hollow float 4 is provided at the middle lower side of the steam trap valve body 1, and a first valve port 5 is provided at the middle lower end on the right side of the steam trap valve body 1; a steam trap guide pipe 6 is provided in the middle of the upper side of the first valve port 5; a left flange 7 is provided on the left side of the steam trap valve body inlet 2; the steam trap A right flange 8 is provided on the right side of the valve body outlet 3, and a pipe 16 is provided in the middle of the right side of the right flange 8; a steam trap valve cover 9 is provided on the upper side of the steam trap valve body 1, and a second valve port 10 is provided inside the middle right side of the upper surface of the steam trap valve cover 9, and a thermal element 11 is provided on the lower side of the second valve port 10; a filter screen 12 is provided on the upper middle side of the steam trap valve body 1, a ball cover fixing frame 13 is provided on the lower side of the filter screen 12, and a ball cover 14 is provided in the middle of the ball cover fixing frame 13; a sewage outlet 15 is provided at the lower middle end of the front side of the steam trap valve body 1.

[0016] The working principle of the utility model is: when in use, first connect the steam trap valve body 1 through the left flange 7 and the right flange 8 to the pipeline 16. When the working equipment is in the state of just starting up, the internal temperature of the steam trap valve body 1 is in a low state, and the main material of the thermal element 11 is fusible alloy or thermal insulating material, and these materials have the characteristics that the physical properties will change with the change of temperature, so that it can form a temperature-controlled self-acting switch, so at this time the thermal element 11 will shrink, the second valve port 10 will open, and then the steam trap valve body 1 will be closed. The air inside the steam trap body 1 will be discharged through the second valve port 10, so that the steam trap body 1 can be quickly started. When condensed water enters the steam trap body 1 through the steam trap body inlet 2, the air can be discharged through the steam trap body outlet 3 according to the above principle, and then the condensed water will fall to the lower side of the steam trap body 1 under the action of gravity, and then the hollow float 4 will rise with the rise of the condensed water level on the lower side of the steam trap body 1, until the hollow float 4 is no longer in contact with the first valve port 5, and then the condensed water will be discharged through the first valve port 5. When hot condensed water or steam enters the steam trap body 1, the condensed water will be discharged through the first valve port 5. When the water enters the interior of the steam trap body 1, the internal temperature of the steam trap body 1 will rise, and then the thermal element 11 will expand due to the heat, and then the second valve port 10 will be closed, and then the hot condensed water will also fall to the lower side of the interior of the steam trap body 1 under the action of gravity, and then the hollow float 4 will float with the floating of the condensed water level, so that the opening of the first valve port 5 can be adjusted, and then the condensed water will be discharged through the first valve port 5. When no condensed water enters the interior of the steam trap body 1, the hollow float 4 will close the first valve port 5 as the liquid level drops, and the first valve port 5 is always in Below the condensation water level, a water seal can be formed, and steam leakage will not occur; the device can quickly discharge the generated condensation water through the hollow float 4, so that there will be no water accumulation in the heating equipment, thereby obtaining higher thermal efficiency, having the characteristics of sensitive response and simple structure, and thus can better avoid the occurrence of water hammer, ensuring that the working equipment always operates under the best working conditions; the device will not be affected by changes in steam pressure, and the hollow float 4 can float with the floating of the condensation water level, so that the opening of the first valve port 5 can be adjusted, so that the device can work continuously.

[0017] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steam pipeline trap, comprising a trap body (1), a hollow float (4) and a trap cover (9), characterized in that: A trap valve inlet (2) is provided at the middle upper end on the left side of the trap valve body (1), and a trap valve outlet (3) is provided at the middle upper end on the right side of the trap valve body (1); a hollow float (4) is provided at the middle lower side of the interior of the trap valve body (1), and a first valve port (5) is provided at the middle lower end on the right side of the trap valve body (1).

2. A steam pipe trap according to claim 1, characterized in that: A steam trap guide pipe (6) is provided in the middle of the upper side of the first valve port (5).

3. A steam pipe trap according to claim 1, characterized in that: A left flange (7) is provided on the left side of the steam trap valve body inlet (2).

4. A steam pipeline trap according to claim 1, characterized in that: A right flange (8) is provided on the right side of the steam trap body outlet (3), and a pipeline (16) is provided in the middle of the right side of the right flange (8).

5. A steam pipeline trap according to claim 1, characterized in that: A steam trap valve cover (9) is provided on the upper side of the steam trap valve body (1), a second valve port (10) is provided inside the middle right side of the upper surface of the steam trap valve cover (9), and a thermal sensitive element (11) is provided on the lower side of the second valve port (10).

6. A steam pipeline trap according to claim 1, characterized in that: A filter screen (12) is provided at the middle upper side of the interior of the steam trap body (1), a ball cover fixing frame (13) is provided at the lower side of the filter screen (12), and a ball cover (14) is provided at the middle interior of the ball cover fixing frame (13).

7. A steam pipeline trap according to claim 1, characterized in that: A sewage outlet (15) is provided at the lower middle end of the front side of the steam trap valve body (1).

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