Recovery system for extracting heat energy of workshop condensate water

Abstract

The utility model relates to the technical field of heat energy recovery, and discloses a heat energy recovery system for extracting workshop condensate water, which solves the problems in the background technology, and comprises a water return pool, a heating water return pipeline, a heating water supply pipeline, a steam pipeline, a workshop condensate water extraction pipeline and a condensate water pipeline, a fourth warm water supply pipeline cut-off valve is arranged on the heating area, and heating return water flows out of the heating area, flows into the first plate heat exchanger through the heating return water pipeline and then enters the heating water supply pipeline to form a loop. A first stop valve and a water pump are arranged on the heating water return pipeline, steam flows into the first plate heat exchanger through the steam pipeline, enters the condensate water pipeline through the first plate heat exchanger and flows into the water return pool, the effect that condensate water is extracted by a workshop to heat the heating system is achieved, and resource waste and heating cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat recovery, in particular to a condensed water heat recovery system for an extraction workshop. Background Art

[0002] The steam used for heating equipment in the extraction workshop is collected into the condensate main pipe through the equipment drain valve and then returned to the return water pool by steam pressure. Actual measurement shows that the condensate temperature during normal production can reach 80℃-95℃, while the company's winter heating water supply temperature is set at 45℃-55℃, and the condensate temperature is higher than the heating temperature.

[0003] The current heating system is heated by only one heating plate heat exchanger. The steam used for heating equipment in the extraction workshop is collected into the condensate main pipe through the equipment drain valve and then returned to the return pool by steam pressure. This part of heat is not used reasonably, resulting in waste of resources and increased heating costs. For this reason, we proposed a condensate heat recovery system for the extraction workshop. Utility Model Content

[0004] In order to solve the problem that the current heating relies on only one heating plate heat exchanger to heat the heating system, and the steam used for the original extraction workshop heating equipment is collected into the condensate main pipe through the equipment drain valve and then returned to the return water tank by steam pressure, this part of heat is not reasonably utilized, resulting in waste of resources and increased heating costs, the utility model provides the following technical solutions: the extraction workshop condensate heat energy recovery system, including a return water tank, a heating return water pipeline, a heating water supply pipeline, a steam pipeline, an extraction workshop condensate pipeline, a condensate pipeline, the heating water supply flows out from the first plate heat exchanger, passes through the second plate The heating water return pipeline is provided with a first stop valve and a water pump. Steam flows into the first plate heat exchanger through the steam pipeline, enters the condensate pipeline through the first plate heat exchanger and flows into the return water pool. The workshop condensate flows into the second plate heat exchanger through the extraction workshop condensate pipeline, and flows into the return water pool through the second plate heat exchanger.

[0005] Preferably, one end of the heating water supply pipeline is connected to the cold outlet of the first plate heat exchanger, and the other end is connected to the cold inlet of the second plate heat exchanger, and then connected to the heating area through the cold outlet of the second plate heat exchanger.

[0006] Preferably, one end of the heating return water pipeline is connected to the cold inlet of the first plate heat exchanger, and the other end is connected to the heating area.

[0007] Preferably, the steam pipeline is connected to the hot inlet of the first plate heat exchanger, and a fifth stop valve is provided on the steam pipeline. Closing or opening the fifth stop valve can prevent or allow steam to enter the first plate heat exchanger.

[0008] Preferably, one end of the condensate pipeline is connected to the hot outlet of the first plate heat exchanger, and the other end is connected to the return water tank, and a steam trap is provided on the condensate pipeline.

[0009] Preferably, one end of the condensate pipeline of the extraction workshop is connected to the heat inlet of the second plate heat exchanger, and the heat outlet of the second plate heat exchanger is connected to the return water tank through a pipeline.

[0010] Preferably, a second stop valve is provided on each pipeline connected to the second plate heat exchanger, and the second stop valve is used to control the working state of the second plate heat exchanger. A third stop valve is provided between the second stop valves on the same side, and the third stop valve is in a normally closed state.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By inputting steam into the first plate heat exchanger, the heating water from the heating return water pipeline is heat exchanged, and the heated heating water flows into the second plate heat exchanger through the first plate heat exchanger. The condensed water extracted from the workshop flows through the second plate heat exchanger, so that the heating water completes heat exchange in the second plate heat exchanger and flows into the heating area through the heating water supply pipeline. The heating water supply hanging line and the heating return water pipeline form a closed loop. The first plate heat exchanger and the second plate heat exchanger are connected in series, and heat is exchanged for the heating water successively, thereby achieving the effect of recycling the condensed water extracted from the workshop to heat the heating system, reducing resource waste and heating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a front view structural schematic diagram of the utility model as a whole;

[0015] In the figure: 1. first stop valve; 2. water pump; 3. second stop valve; 4. third stop valve; 5. steam trap; 6. first plate heat exchanger; 7. second plate heat exchanger; 8. fourth stop valve; 9. fifth stop valve. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] Depend on Figure 1 It is given that the utility model extracts the condensate heat energy recovery system of the workshop, comprises a return water tank, a heating return water pipeline, a heating water supply pipeline, a steam pipeline, an extraction workshop condensate pipeline, and a condensate pipeline. The heating water supply flows out from the first plate heat exchanger 6, passes through the second plate heat exchanger 7, and flows into the heating area via the heating water supply pipeline. A fourth heating water supply pipeline shut-off valve 8 is provided on the extraction. The heating return water flows out from the heating area, flows into the first plate heat exchanger 6 via the heating return water pipeline, and then enters the heating water supply pipeline to form a loop. The heating return water pipeline is provided with a first shut-off valve 1 and a water pump 2. Steam flows into the first plate heat exchanger 6 through the steam pipeline, enters the condensate pipeline via the first plate heat exchanger 6 and flows into the return water tank. The workshop condensate flows into the second plate heat exchanger 7 via the extraction workshop condensate pipeline, and flows into the return water tank via the second plate heat exchanger 7.

[0018] One end of the heating water supply pipeline is connected to the cold outlet of the first plate heat exchanger 6, and the other end is connected to the cold inlet of the second plate heat exchanger 7, and then connected to the heating area through the cold outlet of the second plate heat exchanger 7.

[0019] One end of the heating return water pipeline is connected to the cold inlet of the first plate heat exchanger 6, and the other end is connected to the heating area.

[0020] The steam pipeline is connected to the hot inlet of the first plate heat exchanger 6 . A fifth stop valve 9 is arranged on the steam pipeline. Closing or opening the fifth stop valve 9 can prevent or allow steam to enter the first plate heat exchanger 6 .

[0021] One end of the condensate pipeline is connected to the hot outlet of the first plate heat exchanger 6, and the other end is connected to the return water tank. A steam trap 5 is arranged on the condensate pipeline. Steam is collected by the steam trap 5 and then flows back to the return water tank by steam pressure.

[0022] One end of the extraction workshop condensate pipeline is connected to the heat inlet of the second plate heat exchanger 7, and the heat outlet of the second plate heat exchanger 7 is connected to the return water tank through a pipeline, so that the condensate returns to the return water tank.

[0023] The pipelines connected to the second plate heat exchanger 7 are all provided with second stop valves 3, and the second stop valves 3 are used to control the working state of the second plate heat exchanger 7. The second stop valves 3 are all in a normally open state. Third stop valves 4 are respectively provided between the second stop valves 3 on the same side, and the third stop valves 4 are in a normally closed state. Opening and closing the third stop valves 4 facilitates the maintenance of the second plate heat exchanger 7.

[0024] Working principle: By inputting steam into the first plate heat exchanger 6, the heating water from the heating return water pipeline is heat exchanged, and the heated heating water flows into the second plate heat exchanger 7 through the first plate heat exchanger 6. The condensed water extracted from the workshop flows through the second plate heat exchanger 7, so that the heating water completes heat exchange in the second plate heat exchanger 7 and flows into the heating area through the heating water supply pipeline. The heating water supply hanging line and the heating return water pipeline form a closed loop. The first plate heat exchanger 6 and the second plate heat exchanger 7 are connected in series, and the heating water is heat exchanged successively, thereby achieving the effect of recycling the condensed water extracted from the workshop to heat the heating system, reducing resource waste and heating costs.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The condensed water heat recovery system of the extraction workshop includes a return water tank, a heating return water pipeline, a heating water supply pipeline, a steam pipeline, an extraction workshop condensed water pipeline, and a condensed water pipeline, characterized in that: The heating water flows out of the first plate heat exchanger (6), passes through the second plate heat exchanger (7), and flows into the heating area via the heating water supply pipeline, on which a fourth heating water supply pipeline shutoff valve (8) is provided. The heating return water flows out from the heating area, flows into the first plate heat exchanger (6) through the heating return water pipeline, and then enters the heating water supply pipeline to form a loop. The heating return water pipeline is provided with a first stop valve (1) and a water pump (2). The steam flows into the first plate heat exchanger (6) through the steam pipeline, enters the condensate pipeline through the first plate heat exchanger (6) and flows into the return water tank. The workshop condensate flows into the second plate heat exchanger (7) through the extraction workshop condensate pipeline, and flows into the return water tank via the second plate heat exchanger (7).

2. The extraction workshop condensed water heat recovery system according to claim 1 is characterized by: One end of the heating water supply pipeline is connected to the cold outlet of the first plate heat exchanger (6), and the other end is connected to the cold inlet of the second plate heat exchanger (7), and then connected to the heating area through the cold outlet of the second plate heat exchanger (7).

3. The condensed water heat recovery system for the extraction workshop according to claim 2 is characterized in that: One end of the heating return water pipeline is connected to the cold inlet of the first plate heat exchanger (6), and the other end is connected to the heating area.

4. The extraction workshop condensed water heat recovery system according to claim 3 is characterized by: The steam pipeline is connected to the hot inlet of the first plate heat exchanger (6), and a fifth stop valve (9) is arranged on the steam pipeline. Closing or opening the fifth stop valve (9) can prevent or allow steam to enter the first plate heat exchanger (6).

5. The extraction workshop condensed water heat recovery system according to claim 4 is characterized in that: One end of the condensate pipeline is connected to the hot outlet of the first plate heat exchanger (6), and the other end is connected to the return water tank. A steam trap (5) is provided on the condensate pipeline.

6. The extraction workshop condensed water heat recovery system according to claim 5, characterized in that: One end of the condensate pipeline of the extraction workshop is connected to the heat inlet of the second plate heat exchanger (7), and the heat outlet of the second plate heat exchanger (7) is connected to the return water tank through a pipeline.

7. The extraction workshop condensed water heat recovery system according to claim 6, characterized in that: A second stop valve (3) is provided on each pipeline connected to the second plate heat exchanger (7), and the second stop valve (3) is used to control the working state of the second plate heat exchanger (7). A third stop valve (4) is provided between the second stop valves (3) on the same side, and the third stop valve (4) is in a normally closed state.

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