Steam temperature and pressure reduction system

Abstract

The utility model belongs to the technical field of temperature and pressure reduction of steam boilers, and particularly relates to a steam temperature and pressure reduction system. The device comprises a device body, a gas-liquid separation tank, a pressure reducing pipe and a cold water pipe, the gas-liquid separation tank is fixed on the outer side of the device body, a gas inlet of the gas-liquid separation tank is connected with a gas outlet of the pressure reducing pipe, and the pressure reducing pipe is fixed in the device body; an air inlet of the pressure reducing pipe extends to the outer side of the device body and is connected with a pressure adjusting device; a venturi tube is arranged at the joint of the pressure reducing pipe and the pressure adjusting device; a cold water guide pipe is arranged on one side of the venturi tube and connected with the cold water pipe. The steam temperature and pressure reduction system is simple in structure and convenient in temperature and pressure reduction.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam boiler temperature reduction and pressure reduction, and particularly relates to a steam temperature reduction and pressure reduction system. Background Art

[0002] The temperature reduction and pressure reduction device is a steam thermal energy parameter conversion device widely used in modern industrial cogeneration, central heating (or steam supply) and light industry, electric power, chemical industry, textile and other enterprises in thermal energy engineering. Its pressure reduction system adopts a double-seat pressure reducing valve structure with small unbalanced force, large adjustment range, smooth operation and no jamming. The temperature reduction system adopts a Venturi plus flute nozzle, without transmission parts, good temperature reduction water atomization effect, and the nozzle is easy to disassemble and assemble, which is convenient for maintenance.

[0003] Furthermore, steam is generally transported at high temperature and high pressure, and steam is generally used as low-temperature saturated steam, so it is often necessary to perform a decompression treatment at the end of use. The temperature of the steam after decompression does not drop, so the steam is overheated. Therefore, the existing steam decompression system needs to be equipped with a high-pressure water pump to reduce the temperature of the steam by spraying, but once the high-pressure water pump is used, it must be ensured that the pressure of the high-pressure water pump is higher than the superheated steam pressure, so the energy consumption of the entire temperature reduction process is high. In addition, the input pressure of the steam end of the existing device is difficult to control, and the pressure of the steam when it is ejected is too high, which can easily cause the decompression port or the inside of the pipeline to be damaged, resulting in waste of resources and damage to the entire device.

[0004] On this basis, we propose a steam temperature and pressure reduction system. Summary of the invention

[0005] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a steam temperature reduction and pressure reduction system to solve the problems of high energy consumption and inconvenient steam input pressure control in the existing steam temperature reduction and pressure reduction system.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] A steam temperature reduction and pressure reduction system comprises a device body, a gas-liquid separation tank, a pressure reducing pipe and a cold water pipe, wherein the gas-liquid separation tank is fixed on the outside of the device body, the air inlet of the gas-liquid separation tank is connected to the air outlet of the pressure reducing pipe, and the pressure reducing pipe is fixed in the device body; the air inlet of the pressure reducing pipe extends to the outside of the device body, and the air inlet of the pressure reducing pipe is connected to a pressure regulating device; a venturi tube is provided at the connection between the pressure reducing pipe and the pressure regulating device; a cold water conduit is provided on one side of the venturi tube, and the cold water conduit is connected to the cold water pipe.

[0008] Furthermore, in order to improve the working efficiency of the entire device, several pressure-reducing pipes are provided along the inner wall of the device body, and the air outlet of the pressure-reducing pipe is connected to the air inlet of the gas-liquid separation tank through an air guide pipe. In order to facilitate the connection between the pressure-reducing pipe and the gas-liquid separation tank, the air inlet of the gas-liquid separation tank is provided with a diverter plate, and the diverter plate is provided with the same number of air inlets as the pressure-reducing pipe.

[0009] Furthermore, in order to be able to introduce steam into each pressure-reducing pipe, a shunt pipe is provided at the connection between the pressure regulating device and the pressure-reducing pipe, and a plurality of guide ports are provided on one side of the shunt pipe close to the pressure-reducing pipe, and the number of the guide ports is the same as the number of the pressure-reducing pipes.

[0010] Furthermore, in order to enable the pressure regulating device to adjust the pressure at the air inlet of the pressure-reducing pipe at any time, the pressure regulating device includes a turntable, an adjusting handle and an air release valve. The air release valve is arranged in the circumferential direction of the pressure regulating device, and there are several air release valves. The turntable is slidably connected to a slide groove provided inside the pressure regulating device, and several exhaust ports are provided in the circumferential direction of the turntable. A gear ring is provided on the side of the turntable close to the adjusting handle, and the gear ring is engaged with the driving teeth provided at the bottom of the adjusting handle.

[0011] Furthermore, in order to monitor the pressure of the pressure regulating device at any time, an air pressure sensor is provided in the pressure regulating device.

[0012] In summary, due to the adoption of the above technical solution, the beneficial technical effects of the utility model are:

[0013] A steam temperature reduction and pressure reduction system, wherein a venturi is provided at the connection between a pressure reducing pipe and a pressure regulating device; a cold water conduit is provided on one side of the venturi, the cold water conduit is connected to the cold water pipe, and the venturi is a trumpet-shaped structure. When steam passes through the venturi, a negative pressure is generated in the venturi, and the negative pressure generates a suction force on the water in the cold water conduit. Therefore, as long as the steam passes through the venturi, cooling water is sucked into the venturi, and the cold water sucked into the venturi is mixed with the steam to reduce the temperature of the steam, thereby avoiding the use of a high-pressure pump in the whole process.

[0014] A steam temperature reduction and pressure reduction system, when the pressure at the air inlet of the pressure reducing pipe needs to be adjusted, the gap between the exhaust port and the air outlet of the relief valve is slowly increased by turning the adjustment handle, and part of the steam is discharged through the gap, thereby adjusting the pressure at the air inlet of the pressure reducing pipe. The entire adjustment device is not only simple in structure but also can adjust the pressure at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 For this utility model Figure 1 Top view.

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the cross section along the AA direction.

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the cross section in the CC direction.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 6 For this utility model Figure 5 Schematic diagram of the local enlarged structure at point A.

[0021] In the figure: device body 1, gas-liquid separation tank 2, diverter plate 3, air guide pipe 4, pressure reducing pipe 5, cold water pipe 6, cold water conduit 7, venturi tube 8, diverter pipe 9, pressure regulating device 10, air release valve 11, slide 12, turntable 13, gear ring 14, exhaust port 15, adjustment handle 16, drive gear 17. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model content, and are not used to limit the utility model content. Example 1

[0023] In the present embodiment, a steam temperature reduction and pressure reduction system comprises a device body 1, a gas-liquid separation tank 2, a pressure reducing pipe 5 and a cold water pipe 6, wherein the gas-liquid separation tank 2 is fixed on the outside of the device body 1, the air inlet of the gas-liquid separation tank 2 is connected to the air outlet of the pressure reducing pipe 5, and the pressure reducing pipe 5 is fixed in the device body 1; the air inlet of the pressure reducing pipe 5 extends to the outside of the device body 1, and the air inlet of the pressure reducing pipe 5 is connected to a pressure regulating device 10; a venturi tube 8 is provided at the connection between the pressure reducing pipe 5 and the pressure regulating device 10; a cold water conduit 7 is provided on one side of the venturi tube 8, and the cold water conduit 7 is connected to the cold water pipe 6, and the venturi tube 8 is a trumpet-shaped structure. When the steam passes through the venturi tube 8, a negative pressure is generated in the venturi tube 8, and the negative pressure will generate a suction force on the water in the cold water conduit 7. Therefore, as long as the steam passes through the venturi tube 8, the cooling water will be sucked into the venturi tube 8, and the cold water sucked into the venturi tube 8 will mix with the steam to reduce the temperature of the steam, and the use of a high-pressure pump is avoided in the whole process. In order to improve the working efficiency of the whole device, several pressure-reducing pipes 5 are provided along the inner wall of the device body 1, and the gas outlet of the pressure-reducing pipe 5 is connected to the gas inlet of the gas-liquid separation tank 2 through the air guide pipe 4. In order to facilitate the connection between the pressure-reducing pipe 5 and the gas-liquid separation tank 2, the gas inlet of the gas-liquid separation tank 2 is provided with a confluence plate 3, and the confluence plate 3 is provided with the same number of gas inlets as the pressure-reducing pipe 5. In order to be able to introduce steam into each pressure-reducing pipe 5, a shunt pipe 9 is provided at the connection between the pressure regulating device 10 and the pressure-reducing pipe 5, and a plurality of guide ports are provided on the side of the shunt pipe 9 close to the pressure-reducing pipe 5, and the number of the guide ports is the same as the number of the pressure-reducing pipe 5.

[0024] In order to enable the pressure regulating device 10 to adjust the pressure at the air inlet of the pressure reducing pipe 5 at any time, the pressure regulating device 10 includes a turntable 13, an adjustment handle 16 and a relief valve 11. The relief valve 11 is arranged in the circumferential direction of the pressure regulating device 10, and there are several relief valves 11. The turntable 13 is slidably connected with the slide groove 12 provided inside the pressure regulating device 10. The turntable 13 is provided with several exhaust ports 15 in the circumferential direction. The turntable 13 is provided with a gear ring 14 on the side close to the adjustment handle 16, and the gear ring 14 is meshed with the driving gear 17 provided at the bottom of the adjustment handle 16. In order to monitor the pressure of the pressure regulating device 10 at any time, an air pressure sensor is provided in the pressure regulating device 10. In the whole process, when the pressure at the air inlet of the pressure reducing pipe 5 needs to be adjusted, the gap between the exhaust port 15 and the air outlet of the relief valve 11 is slowly increased by rotating the adjustment handle 16, and part of the steam is discharged through the gap, thereby adjusting the pressure at the air inlet of the pressure reducing pipe 5. The entire regulating device not only has a simple structure but also can adjust the pressure at any time.

[0025] The above description is a preferred embodiment of the utility model content and is not intended to limit the utility model content. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model content should be included in the protection scope of the utility model content.

Claims

1. A steam temperature and pressure reduction system, comprising a device body (1), a gas-liquid separation tank (2), a pressure reducing pipe (5) and a cold water pipe (6), characterized in that: The gas-liquid separation tank (2) is fixed on the outside of the device body (1); the air inlet of the gas-liquid separation tank (2) is connected to the air outlet of the pressure reducing pipe (5), and the pressure reducing pipe (5) is fixed in the device body (1); the air inlet of the pressure reducing pipe (5) extends to the outside of the device body (1), and the air inlet of the pressure reducing pipe (5) is connected to the pressure regulating device (10); a venturi tube (8) is provided at the connection between the pressure reducing pipe (5) and the pressure regulating device (10); a cold water conduit (7) is provided on one side of the venturi tube (8), and the cold water conduit (7) is connected to the cold water pipe (6).

2. A steam temperature and pressure reduction system according to claim 1, characterized in that: A plurality of pressure-reducing pipes (5) are provided along the inner wall of the device body (1), and the gas outlet of the pressure-reducing pipe (5) is connected to the gas inlet of the gas-liquid separation tank (2) through the air guide pipe (4), and the gas inlet of the gas-liquid separation tank (2) is provided with a diverter plate (3), and the diverter plate (3) is provided with the same number of gas inlets as the pressure-reducing pipes (5).

3. The steam temperature and pressure reduction system according to claim 1, characterized in that: A shunt pipe (9) is provided at the connection between the pressure regulating device (10) and the pressure reducing pipe (5), and a plurality of flow guide ports are provided on a side of the shunt pipe (9) close to the pressure reducing pipe (5), and the number of the flow guide ports is the same as the number of the pressure reducing pipe (5).

4. The steam temperature and pressure reduction system according to claim 1, characterized in that: The pressure regulating device (10) comprises a rotating disk (13), an adjusting handle (16) and an air release valve (11). The air release valve (11) is arranged in the circumferential direction of the pressure regulating device (10), and there are a plurality of air release valves (11). The rotating disk (13) is slidably connected to a slide groove (12) provided inside the pressure regulating device (10). A plurality of air exhaust ports (15) are provided in the circumferential direction of the rotating disk (13). A toothed ring (14) is provided on one side of the rotating disk (13) close to the adjusting handle (16), and the toothed ring (14) is meshed with a driving tooth (17) provided at the bottom of the adjusting handle (16).

5. The steam temperature and pressure reduction system according to claim 1, characterized in that: The pressure regulating device (10) is provided with an air pressure sensor.

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