Energy-saving type steam-water heat exchange unit

Abstract

The utility model discloses an energy-saving type steam-water heat exchange unit which comprises a skid-mounted frame, the skid-mounted frame is of a rectangular structure, a main heat exchanger is arranged on one side of the skid-mounted frame and connected to the skid-mounted frame in a split mode, a first water inlet pipe and a first water outlet pipe are arranged on the two sides of the main heat exchanger, and the first water inlet pipe and the first water outlet pipe are connected to the skid-mounted frame in a split mode. One side of the first water inlet pipe is connected with a water supply pipe group; the utility model relates to the technical field of heat exchange units, in particular to an energy-saving steam-water heat exchange unit, which adopts a skid-mounted structure to mount a main heat exchanger and an auxiliary heat exchanger, is convenient to detach, replace and overhaul, and is provided with the main heat exchanger for steam-water heat exchange; the auxiliary heat exchanger is used for exchanging heat with the split-flow heating medium, the heat preservation storage tank is matched for conducting heat preservation on the heating medium, the heat preservation heating medium and the heating medium for primary heat exchange are mixed according to the operation temperature requirement of a pipe network, and energy waste caused by direct backflow of steam condensate water is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger unit technical field, concretely is a kind of energy-saving steam-water heat exchanger unit. BACKGROUND

[0002] Steam-water heat exchanger as a kind of key energy conversion and heat management technology, plays an important role in production and life application, steam-water heat exchanger mainly with high-temperature steam as heat exchange medium, through high-temperature steam and heat medium heat exchange.

[0003] But the steam-water heat exchanger of present stage is usually only provided with one-stage heat exchange device, however, in the process of steam-water heat exchange, steam condenses to form condensate and is discharged, and in order to maintain the high temperature of heat medium, the condensate after heat exchange still contains a lot of heat, and the present stage is usually returned to the heater side directly, which causes the problem of insufficient heat exchange in the heat exchange process, and in view of this, the above-mentioned problem is studied in depth, and the case is generated. INVENTION CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an energy-saving steam-water heat exchanger unit, which solves the problems of the prior art.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: an energy-saving steam-water heat exchanger unit, comprising a pry frame, the pry frame is a rectangular frame, one side of the pry frame is provided with a main heat exchanger, the main heat exchanger is connected on the pry frame in a split body, two sides of the main heat exchanger are provided with a first water inlet pipe and a first water outlet pipe, one side of the first water inlet pipe is connected with a water supply pipe group, one side of the first water outlet pipe is provided with a sewer pipe group;

[0006] The main heat exchanger is provided with a heat exchange medium inlet and a heat exchange medium outlet;

[0007] One side of the main heat exchanger is provided with a secondary heat exchanger, the secondary heat exchanger is connected with the heat exchange medium outlet through a flow guide pipe, a three-way joint is arranged between the flow guide pipe and the heat exchange medium outlet;

[0008] The secondary heat exchanger is provided with a second water inlet pipe and a second water outlet pipe, the second water inlet pipe is connected with the water supply pipe group, one side of the second water outlet pipe is connected with a standby pipe group, a heat preservation storage tank is connected on the standby pipe group, and a blending pipe is arranged between the heat preservation storage tank and the sewer pipe group.

[0009] Preferably, the main heat exchanger and the secondary heat exchanger are both plate heat exchangers and are arranged side by side, and the bottom of the main heat exchanger and the secondary heat exchanger is provided with a bottom corner connected with the pry frame.

[0010] Preferably, the water supply pipe group is provided with a shunt control valve between the first water inlet pipe and the second water inlet pipe.

[0011] Preferably, the tee joint is provided with a tee control valve, and the tee joint is further connected with a return pipe.

[0012] Preferably, the heat preservation tank is provided with a temperature sensor and a pressure sensor.

[0013] Preferably, the bottom of the heat preservation tank is provided with a plurality of connecting angle pieces connected with the pry installation frame, and the blending pipe is provided with a control valve and a mixing pump.

[0014] Beneficial effects

[0015] The utility model provides a kind of energy-saving steam-water heat exchanger unit.It has the following beneficial effects: the energy-saving steam-water heat exchanger unit, pry installation structure is used to install main heat exchanger and auxiliary heat exchanger, it is convenient to disassemble and replace maintenance, in addition to setting main heat exchanger for steam-water heat exchange, when main heat exchanger completes once heat exchange, steam is condensed and is passed into auxiliary heat exchanger, using auxiliary heat exchanger and shunt heat medium to carry out heat exchange, cooperate heat preservation tank to carry out heat preservation to heat medium, according to the operating temperature requirement of pipe network, the heat medium of heat preservation and once heat exchange heat medium are mixed, avoid the energy waste generated by direct return steam condensate, more energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the first three-dimensional structure schematic view of the energy-saving steam-water heat exchanger unit described in the utility model.

[0017] Fig. 2 It is the second three-dimensional structure schematic view of the energy-saving steam-water heat exchanger unit described in the utility model.

[0018] Fig. 3 It is the overhead structure schematic view of the energy-saving steam-water heat exchanger unit described in the utility model.

[0019] In the drawing: 1, pry installation frame;2, main heat exchanger;3, first water inlet pipe;4, first water outlet pipe;5, water supply pipe group;6, sewer pipe group;7, heat exchange medium inlet;8, heat exchange medium outlet;9, auxiliary heat exchanger;10, flow guide pipe;11, tee joint;12, second water inlet pipe;13, second water outlet pipe;14, standby pipe group;15, heat preservation tank;16, blending pipe;17, shunt control valve;18, mixing pump. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0021] Please refer to Figs. 1-3 The present utility model provides a kind of implementation scheme: in the working process of modern steam-water heat exchanger unit, steam as heat source is condensed, to avoid affecting the temperature of working medium, it will return to the side of heater in the case of high temperature of condensate, but this way can although, since heating device is usually at a certain distance from heat exchanger unit, therefore, a lot of energy waste will also be generated in the conveying process.

[0022] According to the drawings attached Figs. 1-3 It can be known that the present application discloses an energy-saving steam-water heat exchanger unit, which comprises a pry frame 1, the pry frame 1 is used as the bottom support of the whole heat exchanger unit, which plays the role of facilitating the disassembly and replacement of the upper component, and the pry frame 1 is a rectangular structure, which is convenient to install and use in the workshop, and then a main heat exchanger 2 is arranged on one side of the pry frame 1, the main heat exchanger 2 is connected to the pry frame 1 in a split manner, and the pry frame 1 plays the role of limiting the installation of the main heat exchanger 2, the main heat exchanger 2 is a heat exchange place for steam-water heat exchange, a first water inlet pipe 3 and a first water outlet pipe 4 are arranged on both sides of the main heat exchanger 2, the heat medium is introduced into the main heat exchanger 2 through the first water inlet pipe 3, a water supply pipe group 5 is connected to one side of the first water inlet pipe 3, the water supply pipe group 5 is used for connecting the outlet of the heat network pipe, a sewer pipe group 6 is arranged on one side of the first water outlet pipe 4, and the sewer pipe group 6 is connected to the inlet of the heat network pipe, and the water is introduced into the heat network after the heat exchange of the main heat exchanger 2;

[0023] Then a heat exchange medium inlet 7 and a heat exchange medium outlet 8 are arranged on the main heat exchanger 2, steam is introduced through the heat exchange medium inlet 7, and the condensed water of the steam is discharged from the heat exchange medium outlet 8 after the heat exchange between the steam and the water;

[0024] According to the drawings attached Figs. 1-3 It can be known that, in order to further make full use of the heat of the condensed water after heat exchange, one side of the above-mentioned main heat exchanger 2 is provided with a secondary heat exchanger 9, the secondary heat exchanger 9 is connected to the heat exchange medium outlet 8 through a flow guide pipe 10, a three-way joint 11 is arranged between the flow guide pipe 10 and the heat exchange medium outlet 8, the flow guide pipe 10 and the heat exchange medium outlet 8 are connected through the three-way joint 11, the opening and closing of the heat exchange medium outlet 8 is controlled through the three-way joint 11, and then the condensed water of the heat exchange medium is discharged to one side of the secondary heat exchanger 9 through the flow guide pipe 10, and the residual heat in the condensed water is recycled by the secondary heat exchanger 9.

[0025] According to the description attached Figs. 1-3 It can be known that the second water inlet pipe 12 and the second water outlet pipe 13 are arranged on the auxiliary heat exchanger 9, the second water inlet pipe 12 is connected with the water supply pipe group 5, one side of the second water outlet pipe 13 is connected with the standby pipe group 14, the standby pipe group 14 is connected with the heat preservation storage tank 15, and the heat preservation storage tank 15 is connected with the sewer pipe group 6 through the mixing pipe 16;

[0026] In the specific implementation process, the second water inlet pipe 12 and the second water outlet pipe 13 on the auxiliary heat exchanger 9 pass the heat medium into the auxiliary heat exchanger 9, absorb the residual heat in the heat exchange medium by the auxiliary heat exchanger 9, and pass the heat medium after heat absorption into the heat preservation storage tank 15 through the standby pipe group 14, the heat preservation storage tank 15 is wrapped with a heat preservation layer to preserve the heat medium, because the temperature of the pipe network cannot be always at the highest temperature level, when low temperature operation is needed, the standby heat medium in the heat preservation storage tank 15 is mixed with the hot water of the sewer pipe group 6 through the mixing pipe 16, so that a certain temperature is maintained, according to the operation condition, the mixing temperature of the heat medium is changed, the heat utilization is more sufficient, and the waste of heat on the return pipeline after the primary heat exchanger 2 passes through once heat exchange is avoided.

[0027] As a preferred scheme, further, the primary heat exchanger 2 and the auxiliary heat exchanger 9 are both plate heat exchangers and are arranged side by side, the bottom of the primary heat exchanger 2 and the auxiliary heat exchanger 9 is connected with the pry mounting frame 1 through bottom corners, and a pry mounting installation structure is adopted, so that the equipment is convenient to disassemble, replace and overhaul.

[0028] As a preferred scheme, further, the shunt control valve 17 is arranged on the water supply pipe group 5 between the first water inlet pipe 3 and the second water inlet pipe 12, the shunt control valve 17 is used for controlling the water inlet switch of the second water inlet pipe 12, and the shunt control valve 17 is opened when the auxiliary heat exchanger 9 operates.

[0029] As a preferred scheme, further, the three-way control valve is arranged on the three-way joint 11, and the return pipe is further connected with the three-way joint 11, the three-way control valve is used for controlling the switch of the three-way joint 11, and the return pipe is used for returning the heat exchange medium when the auxiliary heat exchanger 9 does not operate.

[0030] As a preferred scheme, further, the temperature sensor and the pressure sensor are arranged on the heat preservation storage tank 15.

[0031] As a preferred scheme, further, the bottom of the heat preservation storage tank 15 is connected with the pry mounting frame 1 through a plurality of connection corner pieces, and the control valve and the mixing pump 18 are arranged on the mixing pipe 16.

[0032] In summary, the energy-saving steam-water heat exchanger unit adopts pry installation structure to install the main heat exchanger 2 and the auxiliary heat exchanger 9, which is convenient for disassembly, replacement and maintenance. In addition to setting the main heat exchanger 2 for steam-water heat exchange, when the main heat exchanger 2 completes the heat exchange, the steam is condensed and then enters the auxiliary heat exchanger 9, and the auxiliary heat exchanger 9 is used for heat exchange with the split heat medium, and the heat medium is heat-insulated by the heat-insulating storage tank 15. According to the operating temperature requirement of the pipe network, the heat-insulated heat medium is mixed with the heat-exchanged heat medium, so that the energy waste caused by the direct backflow of the steam condensate water is avoided, and the energy saving and environmental protection are better.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving steam-water heat exchanger unit, comprising a pry-mounted frame (1), the pry-mounted frame (1) being a rectangular structure frame, one side of the pry-mounted frame (1) being provided with a main heat exchanger (2), the main heat exchanger (2) being connected to the pry-mounted frame (1) in a split body, characterized in that, The main heat exchanger (2) is provided with a first water inlet pipe (3) and a first water outlet pipe (4) on both sides, the first water inlet pipe (3) is connected with a water supply pipe group (5) on one side, and the first water outlet pipe (4) is provided with a sewer pipe group (6) on one side; The main heat exchanger (2) is provided with a heat exchange medium inlet (7) and a heat exchange medium outlet (8); One side of the main heat exchanger (2) is provided with a secondary heat exchanger (9), the secondary heat exchanger (9) is connected with the heat exchange medium outlet (8) through a flow guide pipe (10), and a three-way joint (11) is arranged between the flow guide pipe (10) and the heat exchange medium outlet (8); The secondary heat exchanger (9) is provided with a second water inlet pipe (12) and a second water outlet pipe (13), the second water inlet pipe (12) is connected with the water supply pipe group (5), and the second water outlet pipe (13) is connected with a standby pipe group (14) on one side, the standby pipe group (14) is connected with a heat preservation storage tank (15), and the heat preservation storage tank (15) is connected with the sewer pipe group (6) through a blending pipe (16).

2. The energy-saving steam-water heat exchanger unit according to claim 1, characterized in that, The main heat exchanger (2) and the secondary heat exchanger (9) are both plate heat exchangers and are arranged side by side, and the bottom of the main heat exchanger (2) and the secondary heat exchanger (9) is connected with the pry frame (1) through a bottom corner.

3. The energy-saving steam-water heat exchanger set according to claim 2, characterized in that, The water supply pipe group (5) is provided with a shunt control valve (17) between the first water inlet pipe (3) and the second water inlet pipe (12).

4. The energy-saving steam-water heat exchanger set according to claim 3, characterized in that, The three-way joint (11) is provided with a three-way control valve, and the three-way joint (11) is also connected with a return pipe.

5. The energy-saving steam-water heat exchanger set according to claim 4, characterized in that, The heat preservation storage tank (15) is provided with a temperature sensor and a pressure sensor.

6. The energy-saving steam-water heat exchanger unit according to claim 5, characterized in that, The bottom of the heat preservation storage tank (15) is connected with a plurality of connecting corner pieces and the pry frame (1), and the blending pipe (16) is provided with a control valve and a mixing pump (18).

Images