JP3003835U - Improved steam heat exchange system - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a heat exchange system that enables heat exchange without using a heat exchanger that requires a large amount of space and restrictions of laws and regulations. [Structure] A pressure adjusting mechanism communicating with a water supply section, a load supply water pipe interposed between the pressure adjusting mechanism and a circulation pump, a pressure adjusting mechanism interposed between the circulation pump and the pressure adjusting section, and water is supplied to each load. In the above heat exchange system in which water is circulated from the load, water is circulated from the load and which is connected to the circulation pump, and heat is exchanged with the water circulated by the steam supplied from the heat source. Without providing a heat exchanger with the outgoing pipe, the steam from the heat source is directly transferred to the pipe heat exchanger provided in the load circulating water pipe to perform heat exchange and reach the return water tank to save space. Save and
An improved steam heat exchange system that is not subject to legal restrictions.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger system based on so-called steam heat, in which steam heat generated in a boiler or the like is transferred to water by a heat exchanger, and water having a temperature raised by the heat exchanger is used.

[0002]

[Prior art]

 As shown in FIG. 1, a conventional heat exchange system using steam heat exchanges heat with water supplied from a heat source in the heat exchanger 11, and water whose temperature has risen is , Is used as hot water by the constant load part 16 and the rest is returned to the heat exchanger 11 via the load recirculation water pipe 9 or heat exchange via the load replenishment water pipe 7 via the pressure adjusting part 17. Although the water is returned to the vessel 11, the water that has run short due to being used under load is being replenished from the water supply section 1 (as shown in Fig. 1, the load replenishment water pipe 7 is used for pressure adjustment). Often used for both returning water through the department and supplying water from the water supply department.)

In the conventional heat exchange system, the steam having undergone heat exchange in the heat exchanger 11 is condensed in the steam trap 14 via the steam pipe 3 to become high-temperature water, It reaches the return water tank 15 and is often used to supply water to the boiler, which is a heat source.

However, in the conventional heat exchange system, the above heat energy after the heat exchange is performed in the heat exchanger 11 is hardly used, and the heat of the high temperature water after exiting the steam trap 14 at best. After being reused, the heat exchange efficiency of the heat exchange system was extremely low.

In order to improve such a point, the applicant has already invented the Office with an invention of an improved steam heat exchange system in 1993 Patent Application No. 289718, and applied for the Office. As shown in FIGS. 2 (a) and 2 (b), the water supplied to the heat exchanger 11 exchanges heat with the steam supplied from the heat source 2, thereby increasing the temperature. The water circulates from the load make-up water pipe 7 to the heat exchanger 11 via the pressure adjusting unit 17, or the remaining portion after the water is diverted to the load portion 16 using the temperature is the load recirculating water pipe 9. In the system that circulates to the heat exchanger 11 via the heat exchanger 11, the steam discharged from the heat exchanger 11 is provided in both the load makeup water pipe 7 and the load circulating water pipe 9 or in one of the pipe heat exchangers 12, 13 To reach the return water tank 15 via It consists of an improved steam heat exchange system.

However, in the improved heat exchange system according to the applicant's earlier application, the presence of the heat exchanger 11 is a prerequisite, but the heat exchanger 11 itself requires a large space, and The cost of installing it and its management are complicated due to various legal requirements.

[0007]

[Problems to be solved by the device]

 An object of the present invention is to provide a heat exchange system that can maintain a constant heat exchange efficiency without using the heat exchanger 11.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the structure of the present invention has a pressure adjusting mechanism communicating with a water supply unit, a load make-up water pipe interposed between the pressure adjusting mechanism and a circulation pump, and a circulation pump and the pressure adjusting unit. And a load water supply pipe that supplies water whose temperature has risen to each load, and a load water supply pipe that circulates the load recycle water discharged from the load and that communicates with the circulation pump, and that is connected to the heat source. In the above heat exchange system that exchanges heat with circulating water by the supplied steam, a pipe line in which steam from the heat source is provided in the load recirculating water pipe without providing a heat exchanger between the heat source and the load outward pipe. It consists of an improved steam heat exchange system that transfers heat directly to the heat exchanger and reaches the return water tank.

[0009]

[Function of the device]

 In the present invention, as shown in FIG. 3, heat is exchanged by steam from the heat source (steam supply unit) 2 in a pipeline heat exchanger provided in the middle of the load water recirculation pipe, whereby the load is exchanged. Although it is possible to supply water, the pipe heat exchanger can be set to any heat exchange capacity by setting it in a small space at a mid-portion where the load circulating water pipe exists and by increasing the number as needed. It is possible to design

[0010]

Example 1 FIG. 3 shows the case where the pipe heat exchanger is installed only in the load water pipe, but the pipe heat exchanger is not limited to the load water pipe, and as shown in FIG. It is also possible to install in parallel in the load makeup water pipe.

Of course, in the pipe heat exchangers 12 and 13, the load return water discharged from the load 16 or the load make-up water from the pressure adjusting unit 17 is raised in temperature by heat exchange with steam. become.

[0012]

Second Embodiment FIG. 5 shows that the load recirculation water pipe 9 is provided with a line heat exchanger 12, the load make-up water pipe 7 is provided with a line heat exchanger 13, and the load make-up water pipe 7 is connected to the line heat exchanger. An embodiment will be shown in which the water is fed to the load water pipe 9 before the water supply to the vessel 12.

In this embodiment, the water supplied by the load make-up water pipe is subjected to a temperature rise by the pipe heat exchanger 13 and then, together with the load recycle water discharged from the load, is fed by the pipe heat exchanger 12. , Heat exchange is performed and the temperature is raised.

[0014]

Third Embodiment FIG. 6 shows an embodiment in which one pipe line heat exchanger 12 is provided at a portion where the load makeup water pipe 7 and the load circulating water pipe 9 merge.

In this case, the efficiency of heat exchange can be further improved by using one pipe line heat exchanger as compared with the configuration shown in FIG.

[0016]

[Effect of device]

 With the heat exchange system of the present invention as described above, heat is exchanged in the line heat exchanger provided in the load recirculation pipe without using a heat exchanger that requires a large amount of space and regulations. By supplying hot water to the load, a constant heat exchange efficiency can be maintained, so that space for heat exchange can be secured and economical cost can be sufficiently reduced, and the complicated heat regulation required by the heat exchanger is required. It is possible to escape the regulation of.

As described above, the present invention is of great value because the above-described advantages can be obtained by a simple designing method.

[Brief description of drawings]

FIG. 1: Block diagram showing a heat exchange system in the prior art.

FIG. 2 (a), (b): Block diagram showing a heat exchange system in the invention of the prior application by the applicant.

FIG. 3 is a block diagram showing the operating principle of the present invention.

4 is a block diagram showing a heat exchange system shown in Example 2. FIG.

FIG. 5: Block diagram showing a heat exchange system shown in a third embodiment.

6 is a block diagram showing a heat exchange system shown in Example 4. FIG.

[Explanation of sign]

 1: Water supply part 2: Heat source (steam supply part) 3: Steam pipe 4: Return water pipe 5: Upstream side 6: Downstream side 7: Load replenishment water pipe 8: Load forward pipe 9: Load recirculation water pipe 11: Heat exchanger 12: Pipe heat exchanger 13: Pipe heat exchanger 14: Steam trap 15: Return water tank 16: Load using high-temperature water 17: Pressure adjusting unit 18: Circulation pump

Claims (1)

[Scope of utility model registration request] 1. A pressure adjusting mechanism communicating with a water supply unit, a load make-up water pipe interposed between the pressure adjusting mechanism and the circulation pump, a water pressure adjusting mechanism interposed between the circulation pump and the pressure adjusting unit, and water for each load. In the heat exchange system described above, in which a forward heat pipe for supplying water, a circulating water pipe for circulating water from the load, and a circulating water pump are respectively provided, and heat is exchanged with the circulating water by the steam supplied from the heat source, Improvement by providing steam from the heat source directly to the pipe line heat exchanger provided in the load circulating water pipe for heat exchange without providing a heat exchanger between Type steam heat exchange system.