Steam drainage recycling device

Abstract

The utility model relates to a steam drainage recycling device, which comprises a thermal motor and a heat exchanger, a three-extraction steam supply device and a double-reduction steam supply device are arranged in the thermal motor, the three-extraction steam supply device and the double-reduction steam supply device are respectively provided with guide pipes communicated with a drainage pool, and the guide pipes are connected with the heat exchanger. And the heat exchanger is externally connected with an industrial cooling water return pipe. According to the steam drainage recycling device, accumulated water and steam in the three-extraction steam supply device and the double-reduction steam supply device are conveyed into the heat exchanger through the guide pipes, cooling water is input through the industrial cooling water return pipe to condense the steam, high-temperature steam emission is reduced, and carbon emission is reduced; the thermal stress of a thermal pipeline is reduced by discharging accumulated water, the continuous and stable steam use of the paper machine is ensured, condensed water can be recycled, the cost is reduced, the efficiency is improved, and industrial cooling water return water is externally connected, so that the cooling water return water resistance of an auxiliary machine is reduced, and the safe operation of a unit is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam condensation recovery, and in particular relates to a steam drain recovery and utilization device. Background Art

[0002] The three-extraction steam supply device and double-reduction steam supply device of the thermal motor are U-shaped pipes, and the U-shaped pipe is at the lowest position of the entire heating pipeline. In order to meet the heating temperature demand, cooling water needs to be added. When the steam demand for production is low and the steam consumption is insufficient, the cooling water cannot be completely vaporized, causing the cooling water to accumulate at the U-shaped pipe. The accumulated water needs to be drained into the ditch for a long time. If the ditch is not drained, it is easy to cause water accumulation in the pipe, the thermal stress is large and the metal cracks. In severe cases, water hammer occurs, causing pipeline vibration damage. In addition, the auxiliary machines of the first and second phases provide cooling water, and the return water of each cooling water is designed to be on a return water pipe. The inlet and return water pressures of the industrial water front section are higher than the inlet and return water pressures of the industrial water end, resulting in large return water resistance and poor return water in the industrial water end equipment, increased temperature of the auxiliary machine, and the high temperature tripping of the second phase air compressor. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a steam drainage recovery device, which can utilize cooling water to condense and completely liquefy steam mixed with attenuated water, and then recycle it.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a steam drain recovery and utilization device, including a thermal motor and a heat exchanger, the thermal motor is provided with a three-extraction steam supply device and a double-reduction steam supply device, the three-extraction steam supply device and the double-reduction steam supply device are respectively provided with a conduit connected to the drain tank, the conduit is connected to the heat exchanger, and the heat exchanger is externally connected to an industrial cooling water return pipe.

[0005] The heat exchanger is provided with a transmission pipe for transmitting the industrial cooling water return to the cooling tower.

[0006] A cooling water pipeline and a condensing pipeline are provided in the heat exchanger. The condensing pipeline is connected to the conduit. Both ends of the cooling water pipeline are connected to the transmission pipe and the industrial cooling water return pipe respectively. The cooling water pipeline is placed in the condensing pipeline.

[0007] Both ends of the condensation pipeline are provided with sealing rings that wrap the cooling water pipeline.

[0008] The inner wall of the condensing pipeline is provided with a threaded guide strip, and the threaded guide strip is arranged in contact with the outer wall of the cooling water pipeline.

[0009] A recovery pipe communicating with the condensation pipeline is provided outside the heat exchanger, and the recovery pipe is communicated with an external desalination device.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The utility model discloses a steam drainage recovery and utilization device, which transmits the accumulated water and steam in the three-extraction steam supply device and the double-reduction steam supply device through a conduit and places them in a heat exchanger, and inputs cooling water through an industrial cooling water return pipe to condense the steam, thereby reducing the discharge of high-temperature steam and lowering carbon emissions. The discharge of accumulated water reduces the thermal stress of the heat pipe, ensuring continuous and stable steam use for the paper machine. The condensed water can be recycled and utilized, reducing costs and increasing efficiency, and is externally connected to the industrial cooling water return, thereby reducing the water resistance of the auxiliary machine cooling water return and ensuring safe operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the steam trap recovery and utilization device of the utility model;

[0013] Figure 2 This is a schematic structural diagram of the heat exchanger of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the cooling water pipeline and the condensation pipeline of the utility model.

[0015] Markings in the figure: 1. Thermal motor; 2. Heat exchanger; 3. Three-extraction steam supply device; 4. Double-reduction steam supply device; 5. Conduit; 6. Industrial cooling water return pipe; 7. Transmission pipe; 8. Cooling water pipeline; 9. Condensation pipeline; 10. Sealing ring; 11. Threaded guide strip; 12. Recovery pipe. DETAILED DESCRIPTION

[0016] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0017] like Figure 1-Figure 3 As shown, this embodiment provides a steam drain recovery and utilization device, comprising a thermoelectric generator 1 and a heat exchanger 2. The thermoelectric generator 1 is equipped with a three-way steam supply device 3 and a two-way steam reduction device 4. Each of the three-way steam supply device 3 and the two-way steam reduction device 4 is provided with a conduit 5 connected to a drain tank. The conduit 5 is connected to the heat exchanger 2, and the heat exchanger 2 is externally connected to an industrial cooling water return pipe 6. Specifically, the conduit 5 is equipped with a transfer pump, which can extract and transfer accumulated water within the three-way steam supply device 3 and the two-way steam reduction device 4. By transferring the accumulated water and steam within the three-way steam supply device 3 and the two-way steam reduction device 4 through the conduit 5 and placing them into the heat exchanger 2, and then introducing cooling water through the industrial cooling water return pipe 6 to condense the steam, the discharge of high-temperature steam is reduced, reducing carbon emissions. Furthermore, the removal of accumulated water reduces thermal stress in the heat pipes, ensuring continuous and stable steam use for the paper machine. The condensed water can be recycled, reducing costs and increasing efficiency. Furthermore, the external connection to the industrial cooling water return line reduces the water resistance of the auxiliary cooling water return, ensuring safe operation of the unit.

[0018] Furthermore, a transmission pipe 7 for transmitting the industrial cooling water return water to the cooling tower is installed on the heat exchanger 2. Thus, the industrial cooling water is recycled to the cooling tower for reuse after cooling.

[0019] Furthermore, heat exchanger 2 is provided with a cooling water line 8 and a condensing line 9. The condensing line 9 is connected to the conduit 5. The ends of the cooling water line 8 are connected to the transmission pipe 7 and the industrial cooling water return pipe 6, respectively. The cooling water line 8 is placed within the condensing line 9. Specifically, sealing rings 10 are provided at both ends of the condensing line 9, enveloping the cooling water line 8. The sealing rings 10 enhance the sealing performance. Accumulated water and steam enter the condensing line 9, while the cooling water line 8 transmits the cooling water. The accumulated water and steam condense when they contact the outer wall of the cooling water line 8.

[0020] Furthermore, a threaded guide strip 11 is provided on the inner wall of the condensing pipe 9, and the threaded guide strip 11 is arranged in contact with the outer wall of the cooling water pipe 8. This allows the accumulated water and steam to move along the threaded guide strip 11, thereby increasing the contact time with the outer wall of the cooling water pipe 8 and enabling better condensation.

[0021] Furthermore, a recovery pipe 12 is provided outside the heat exchanger 2 and is connected to the condensation pipe 9. The recovery pipe 12 is connected to an external desalination device to desalinate the condensed water and recycle it.

[0022] The above shows and describes the basic principles and main features of the invention and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the invention, the utility model will have various changes and improvements, and these changes and improvements will fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A steam trap recovery and utilization device, characterized in that: It includes a thermal motor and a heat exchanger. The thermal motor is equipped with a three-extraction steam supply device and a double-reduction steam supply device. The three-extraction steam supply device and the double-reduction steam supply device are respectively provided with a conduit connected to the drain tank. The conduit is connected to the heat exchanger, and the heat exchanger is externally connected to an industrial cooling water return pipe.

2. A steam trap recovery and utilization device according to claim 1, characterized in that: The heat exchanger is provided with a transmission pipe for transmitting the industrial cooling water return to the cooling tower.

3. A steam trap recovery and utilization device according to claim 2, characterized in that: A cooling water pipeline and a condensing pipeline are provided in the heat exchanger. The condensing pipeline is connected to the conduit. Both ends of the cooling water pipeline are connected to the transmission pipe and the industrial cooling water return pipe respectively. The cooling water pipeline is placed in the condensing pipeline.

4. The steam trap recovery and utilization device according to claim 3, characterized in that: Both ends of the condensation pipeline are provided with sealing rings that wrap the cooling water pipeline.

5. The steam trap recovery and utilization device according to claim 3, characterized in that: The inner wall of the condensing pipeline is provided with a threaded guide strip, and the threaded guide strip is arranged in contact with the outer wall of the cooling water pipeline.

6. The steam trap recovery and utilization device according to claim 3, characterized in that: A recovery pipe communicating with the condensation pipeline is provided outside the heat exchanger, and the recovery pipe is communicated with an external desalination device.

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