System for converting low pressure and low temperature into high pressure and high temperature

Abstract

The utility model discloses a system for converting low pressure and low temperature into high pressure and high temperature, and belongs to the field of boiler waste heat equipment. Comprising a steam main pipe; a pressurizing assembly is arranged on the steam main pipe and comprises a pressurizing bin arranged on the steam main pipe, the pressurizing bin is connected with a steam turbine through a connecting pipe, and a first hydraulic adjusting valve is installed on the connecting pipe. Wherein a booster pump is arranged at an inlet of the pressurizing bin. The device has the beneficial effects that the first hydraulic regulating valve is mounted at the outlet of the pressurizing bin, when the pressure in the pressurizing bin reaches the safety upper limit of the first hydraulic regulating valve, the first hydraulic regulating valve is opened, and pressurized and heated steam enters the steam turbine, so that the pressurizing and heating process of the steam can be completed in the pressurizing bin; and the pressurized and heated steam is input into the steam turbine to be used by the steam turbine, the pressurization process is transferred out of the steam turbine, and the service life of the steam turbine is prolonged.

Description

Technical Field

[0001] This utility model relates to a low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion, belonging to the field of boiler waste heat equipment. Background Technology

[0002] Waste heat power generation is a technology that converts excess heat energy from production processes into electrical energy. Waste heat power generation is not only energy-saving but also beneficial to environmental protection; a key piece of equipment in waste heat power generation is the waste heat boiler. It uses the heat or combustible material in waste gas, waste liquid, or other working fluids as a heat source to produce steam for power generation.

[0003] When generating electricity from waste heat, steam needs to be added to the steam turbine. The steam drives the steam turbine to rotate, thereby generating mechanical energy. Finally, the mechanical energy is converted into electrical energy by the generator.

[0004] However, steam requires extremely high pressure to drive a steam turbine, so under normal circumstances, the steam needs to be pressurized and heated. Existing steam turbines have built-in pressurization capabilities, but factors that need to be considered when pressurizing inside the turbine include its internal structure, main shaft, blades, and sensors. Excessive pressurization can easily damage the turbine. Therefore, the turbine needs to be protected during the pressurization process. Utility Model Content

[0005] The purpose of this invention is to provide a low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion, which can effectively solve the above-mentioned problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] It includes a steam main pipe; a pressurization assembly is provided on the steam main pipe, the pressurization assembly includes a pressurization chamber provided on the steam main pipe, the pressurization chamber is connected to a steam turbine through a connecting pipe, and a first hydraulic regulating valve is installed on the connecting pipe; wherein, a pressurization pump is provided at the inlet of the pressurization chamber.

[0008] Furthermore, the steam turbine is also connected to a steam recovery structure, which includes a recovery pipe and an extraction valve installed on the recovery pipe.

[0009] Furthermore, the recovery pipe is also equipped with a first shut-off valve, and a steam treatment pipe is provided at the front and rear ends of the first shut-off valve. A desuperheater is provided on the steam treatment pipe, and a second shut-off valve and a third shut-off valve are provided at the front and rear ends of the desuperheater.

[0010] Furthermore: a safety pipe is provided in the middle section of the recovery pipe, one end of which is connected to the external environment, and a main safety valve is provided on the safety pipe.

[0011] Furthermore: the safety tube is configured as a first pressure reducing tube and a second pressure reducing tube, the second pressure reducing tube is connected to the first pressure reducing tube, the main safety valve is located at the connection between the first pressure reducing tube and the second pressure reducing tube, and a lever-type pulse valve is provided on the second pressure reducing tube.

[0012] Furthermore, the steam turbine is also equipped with a pressure regulating device, which includes a loop pipe and a second hydraulic regulating valve installed on the loop pipe. Both ends of the loop pipe are connected to the inside of the steam turbine.

[0013] Furthermore, a generator is also connected to the steam turbine.

[0014] The beneficial effects are:

[0015] In this device, the main steam pipe provides low-pressure, low-temperature steam. The booster pump operates, adding the low-temperature, low-pressure steam into the booster chamber for the first pressurization and heating operation. A first hydraulic regulating valve is installed at the outlet of the booster chamber. When the pressure inside the booster chamber reaches the safety upper limit of the first hydraulic regulating valve, the valve opens, and the pressurized and heated steam enters the turbine. This setup allows the steam pressurization and heating process to be completed in the booster chamber, and the pressurized and heated steam is then fed into the turbine for turbine use. This removes the pressurization process from the turbine, extending its service life. Attached Figure Description

[0016] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Steam main pipe; 2. Pressurization assembly; 3. Pressurization chamber; 4. Steam turbine; 5. Connecting pipe; 6. First hydraulic regulating valve; 7. Pressurization pump; 8. Steam recovery structure; 9. Recovery pipe; 10. Ejection valve; 11. First shut-off valve; 12. Steam treatment pipe; 13. Desuperheater; 14. Second shut-off valve; 15. Third shut-off valve; 16. Safety pipe; 17. Main safety valve; 18. First pressure reducing pipe; 19. Second pressure reducing pipe; 20. Lever-type pulse valve; 21. Pressure regulating device; 22. Circuit piping; 23. Second hydraulic regulating valve; 24. Generator. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] See Figure 1 This is one embodiment of a low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to the present invention.

[0022] It includes a steam main pipe 1; a pressurization assembly 2 is provided on the steam main pipe 1, the pressurization assembly 2 includes a pressurization chamber 3 provided on the steam main pipe 1, the pressurization chamber 3 is connected to a steam turbine 4 through a connecting pipe 5, and a first hydraulic regulating valve 6 is installed on the connecting pipe 5; wherein, a pressurization pump 7 is provided at the inlet of the pressurization chamber 3.

[0023] In this device, the main steam pipe 1 provides low-pressure, low-temperature steam. The booster pump 7 operates, adding the low-temperature, low-pressure steam into the booster chamber 3 to perform the first pressurization and heating operation on the steam. A first hydraulic regulating valve 6 is installed at the outlet of the booster chamber 3. When the pressure inside the booster chamber 3 reaches the safety upper limit of the first hydraulic regulating valve 6, the first hydraulic regulating valve 6 will open, and the pressurized and heated steam will enter the steam turbine 4. At the same time, the upper limit of the safety value of the first hydraulic regulating valve 6 can be matched with the steam pressure value required for the operation of the steam turbine 4. At this time, the steam input from the booster chamber 3 can be directly supplied to the steam turbine 4 for operation.

[0024] Of course, the upper limit of the safety value of the first hydraulic regulating valve 6 can also be set slightly lower than the upper limit of the safety value of the turbine 4. At this time, the high temperature and high pressure steam enters the turbine 4 and is pressurized for the second time by the turbine 4. This is safer than directly using the turbine 4 for pressurization and will also increase the service life of the turbine 4.

[0025] The purpose of pressurizing this device is also to drive the steam turbine 4 to work, converting the power carried by the steam into mechanical energy; the steam turbine 4 of this device is connected to a generator 24, which can convert mechanical energy into electrical energy.

[0026] However, after the conversion of mechanical energy, steam still has some uses. High-pressure and high-temperature steam can be extracted from the steam turbine 4 and enter the steam recovery structure 8 connected to the steam turbine 4.

[0027] The steam recovery structure 8 includes a recovery pipe 9 and an extraction valve 10 installed on the recovery pipe 9. When the extraction valve 10 is opened, the high-temperature and high-pressure steam will automatically flow to the recovery pipe 9 and then be introduced into the operating room to utilize the steam.

[0028] The recovery pipe 9 is also equipped with a first shut-off valve 11, and a steam treatment pipe 12 is provided at the front and rear ends of the first shut-off valve 11. A desuperheater 13 is provided on the steam treatment pipe 12, and a second shut-off valve 14 and a third shut-off valve 15 are provided at the front and rear ends of the desuperheater 13.

[0029] The desuperheater 13 of this device is water-cooled. A cooling water inlet pipe is introduced from the boiler room to cool the steam in the desuperheater 13. When cooling is needed, the first shut-off valve 11 is closed and the second shut-off valve 14 is opened, and the steam will enter the desuperheater 13. After the temperature drops, the third shut-off valve 15 is opened, and the cooled and depressurized steam will return to the recovery pipe 9 and finally be introduced into the operating room.

[0030] A safety pipe 16 is installed in the middle section of the recovery pipe 9. One end of the safety pipe 16 is connected to the external environment, and a main safety valve 17 is installed on the safety pipe 16.

[0031] Because the recovery pipe 9 in this device needs to introduce steam into the operating room to assist workers, the risk factor is relatively high. This device is equipped with a safety pipe 16 and a main safety valve 17. When the steam pressure and temperature are high, the main safety valve 17 can be opened, and the high-temperature and high-pressure steam will be directly discharged to prevent workers from being burned by the steam.

[0032] The safety pipe 16 is configured as a first pressure reducing pipe 18 and a second pressure reducing pipe 19. The second pressure reducing pipe 19 is connected to the first pressure reducing pipe 18. The main safety valve 17 is located at the connection between the first pressure reducing pipe 18 and the second pressure reducing pipe 19, and a lever-type pulse valve 20 is installed on the second pressure reducing pipe 19.

[0033] This device is equipped with a lever-type pulse valve 20, and the safety pipe 16 is divided into a first pressure-reducing pipe 18 and a second pressure-reducing pipe 19. The lever-type pulse valve 20 is a mechanical valve with a stable mechanical structure. The second pressure-reducing pipe 19 is connected to the recovery pipe 9, and the pressure in the two pipes is the same. When the pressure reaches a certain value, the lever-type pulse valve 20 will automatically open to prevent the pressure from being too high. When the lever-type pulse valve 20 is opened, the operator will know that the pressure value in the pipe is very high and that the main safety valve 17 needs to be opened to release the pressure.

[0034] The steam turbine 4 is also equipped with a pressure regulating device 21, which includes a loop pipe 22 and a second hydraulic regulating valve 23 installed on the loop pipe 22. Both ends of the loop pipe 22 are connected to the inside of the steam turbine. The steam pressure inside the steam turbine 4 should not be too high. The pressure regulating device 21 is used to adjust the upper limit of the pressure inside the steam turbine 4. When the pressure is too high, the second hydraulic regulating valve 23 is activated, and high-temperature, high-pressure steam enters the loop pipe 22 to relieve pressure.

[0035] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion, characterized in that: It includes a steam main pipe (1); a booster assembly (2) is provided on the steam main pipe (1), the booster assembly (2) includes a booster chamber (3) provided on the steam main pipe (1), the booster chamber (3) is connected to a steam turbine (4) through a connecting pipe (5), and a first hydraulic regulating valve (6) is installed on the connecting pipe (5); wherein, a booster pump (7) is provided at the inlet of the booster chamber (3).

2. The low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to claim 1, characterized in that: The steam turbine (4) is also connected to a steam recovery structure (8), which includes a recovery pipe (9) and an extraction valve (10) installed on the recovery pipe (9).

3. The low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to claim 2, characterized in that: The recovery pipe (9) is also provided with a first shut-off valve (11), and a steam treatment pipe (12) is provided at the front and rear ends of the first shut-off valve (11). A desuperheater (13) is provided on the steam treatment pipe (12), and a second shut-off valve (14) and a third shut-off valve (15) are provided at the front and rear ends of the desuperheater (13).

4. The low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to claim 3, characterized in that: A safety pipe (16) is provided in the middle section of the recovery pipe (9). One end of the safety pipe (16) is connected to the external environment, and a main safety valve (17) is provided on the safety pipe (16).

5. The low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to claim 4, characterized in that: The safety tube (16) is configured as a first pressure reducing tube (18) and a second pressure reducing tube (19). The second pressure reducing tube (19) is connected to the first pressure reducing tube (18). The main safety valve (17) is located at the connection between the first pressure reducing tube (18) and the second pressure reducing tube (19), and a lever-type pulse valve (20) is provided on the second pressure reducing tube (19).

6. The low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to claim 1, characterized in that: The steam turbine (4) is also equipped with a pressure regulating device (21), which includes a loop pipe (22) and a second hydraulic regulating valve (23) installed on the loop pipe (22). Both ends of the loop pipe (22) are connected to the inside of the steam turbine.

7. The low-pressure, low-temperature conversion system for high-pressure, high-temperature conversion according to claim 1, characterized in that: A generator (24) is also connected to the steam turbine.

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