A double-layer box-type heat exchanger unit

Abstract

A double-layer box-type heat exchange unit includes a lower container and an upper container. A lower base is provided at the bottom of the lower container, a pipe opening is provided on the surface of the lower base, and a plate heat exchanger, a softening water tank and a circulation pump are installed above the lower base; an upper base is provided at the bottom of the upper container, and a condensate water tank, a condensate water pump and a make-up water pump are installed above the upper base; the plate heat exchanger is respectively connected to a primary pipe network water supply pipe, a primary pipe network return pipe, a secondary pipe network return pipe and a secondary pipe network water supply pipe; the primary pipe network return pipe is connected to the condensate water tank, and the water outlet of the condensate water tank is connected to the output water pipe; the secondary pipe network return pipe is connected to the make-up water pipe through a tee, and the make-up water pipe is connected to the softening water tank. The utility model overcomes the shortcomings of the prior art, saves the cost of the machine room, improves the efficiency of on-site installation, and saves space, and can be applied to places requiring a small space for the machine room.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to heat exchange equipment, specifically to a double-layer box-type heat exchange unit. Background Art

[0002] The plate heat exchanger unit uses a plate heat exchanger. Under the same pressure loss condition, its heat transfer coefficient is 3-5 times higher than that of a tube heat exchanger. The floor space is one-third of that of a tube heat exchanger. The heat recovery rate can be as high as over 90%, so the plate heat exchanger unit is widely used.

[0003] However, plate heat exchangers have very high requirements for operational stability, overall appearance quality, and overall practical performance. Due to the large differences in application environments, some places with harsh environments do not have the conditions to build a machine room; or some places with small sites do not have the conditions to build a machine room; some places with low budgets are not suitable for building a machine room, so it is difficult to apply plate heat exchangers. Because the unit cannot be placed in an open-air venue, many electrical components in the unit are afraid of wind and sun, and will age and leak electricity. The water pump motor also needs protection, and the plate heat exchanger also needs protection. Without protection, the heat exchanger strip will age, causing the heat exchanger to leak and lose its heat exchange function. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a double-layer box-type heat exchanger unit, which overcomes the deficiencies of the prior art, saves machine room costs, improves on-site installation efficiency, and saves space, and is suitable for places requiring a small machine room space.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A double-layer box-type heat exchange unit, comprising a lower container and an upper container, wherein the upper container is fixedly connected to the upper part of the lower container, a lower base is arranged at the bottom of the lower container, a pipe opening is provided on the surface of the lower base, a plate heat exchanger, a softening water tank and a circulation pump are installed in the lower container and above the lower base; an upper base is arranged at the bottom of the upper container, and a condensate water tank, a condensate water pump and a water supply pump are installed in the upper container and above the upper base;

[0007] The heat source inlet end of the plate heat exchanger is connected to one end of the primary pipe network water supply pipe; the heat source outlet end of the plate heat exchanger is connected to one end of the primary pipe network return pipe, the other end of the primary pipe network return pipe is connected to the water inlet end of the condensate water tank, the water outlet end of the condensate water tank is connected to one end of the output water pipe, and the condensate water pump is installed on the output water pipe;

[0008] The cold source inlet end of the plate heat exchanger is connected to one end of the secondary pipe network return pipe, and the cold source outlet end of the plate heat exchanger is connected to one end of the secondary pipe network water supply pipe; the secondary pipe network return pipe is connected to one end of the water supply pipe through a tee, and the other end of the water supply pipe is connected to the water outlet of the softening water tank, the water supply pump is installed on the water supply pipe, and the circulation pump is installed on the secondary pipe network return pipe; the primary pipe network water supply pipe, the output water pipe, the secondary pipe network return pipe and the secondary pipe network water supply pipe all pass through the connecting pipe opening.

[0009] Preferably, an inlet and an outlet are provided at a corner of the upper base, one end of an escalator is fixedly connected to the inlet and an other end of the escalator is fixedly connected to the lower base.

[0010] Preferably, exhaust vents are provided on the sides of the lower container and the upper container; and container inspection doors are provided on the front and rear sides of the lower container.

[0011] Preferably, control valves are installed on the primary pipe network water supply pipe, the primary pipe network return pipe, the secondary pipe network return pipe, the secondary pipe network water supply pipe, the water replenishment pipe and the output water pipe.

[0012] Preferably, a first Y-type filter is installed on the water supply pipe of the primary pipe network, and a second Y-type filter is installed on the water return pipe of the secondary pipe network.

[0013] Preferably, the primary pipe network water supply pipe, the primary pipe network return pipe, the secondary pipe network return pipe and the secondary pipe network water supply pipe are respectively provided with a parameter measuring device, and the parameter measuring device is one or a combination of a pressure gauge, a pressure sensor, a thermometer, a temperature sensor or a flow meter.

[0014] Preferably, an electric control cabinet is installed above the lower base, the signal output end of the parameter measuring device is connected to the signal input end of the electric control cabinet, and the signal output end of the electric control cabinet is respectively connected to the condensate pump, the water supply pump and the circulation pump.

[0015] The utility model provides a double-layer box-type heat exchange unit. It has the following beneficial effects: by installing a plate heat exchanger, a softening water tank and a circulation pump on a lower base, and then installing a condensate water tank, a condensate water pump and a water supply pump on an upper base, the lower base and the upper base can be used as a lower unit module and an upper unit module respectively, so that the lower unit module and the upper unit module can be loaded into a lower container and an upper container respectively, and the pipelines that need to be connected between the lower unit module and the upper unit module can be connected through the upper and lower unit connection flanges to connect the corresponding pipelines. After the connection of the pipelines between the lower unit module and the upper unit module is completed, the lower container and the upper container are fixed together to form a double-layer container. Thereby, the machine room cost is saved, the on-site installation efficiency is improved, and the space is saved, and it can be suitable for places where the machine room requires a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0017] Figure 1 A schematic structural diagram of a lower unit module and an upper unit module in the utility model.

[0018] Figure 2 A schematic structural diagram of the lower unit module and the upper container in the utility model.

[0019] Figure 3 A schematic structural diagram of a lower container and an upper container in the utility model.

[0020] Figure 4 A schematic diagram of the pipeline connection of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Lower container; 2. Upper container; 3. Lower base; 4. Plate heat exchanger; 5. Softening water tank; 6. Circulation pump; 7. Upper base; 8. Condensate tank; 9. Condensate pump; 10. Make-up water pump; 11. Primary network water supply pipe; 12. Secondary network return pipe; 13. Secondary network water supply pipe; 14. Make-up water pipe; 15. Escalator; 16. Exhaust vent; 17. Container inspection door; 18. Output water pipe; 19. Primary network return pipe; 20. Electric control cabinet; 21. First Y-type filter; 22. Second Y-type filter; 24. Inlet and outlet; 25. Pipe opening; 26: Upper and lower unit connection flange. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0024] Embodiment 1, as Figures 1 to 4 As shown, a double-layer box-type heat exchange unit includes a lower container 1 and an upper container 2. The upper container 2 is fixedly connected to the upper part of the lower container 1. A lower base 3 is provided at the bottom of the lower container 1. A pipe opening 25 is provided on the surface of the lower base 3. A plate heat exchanger 4, a softening water tank 5 and a circulating pump 6 are installed above the lower base 3. An upper base 7 is provided at the bottom of the upper container 2. A condensate tank 8, a condensate pump 9 and a make-up water pump 10 are installed above the upper base 7.

[0025] The heat source inlet end of the plate heat exchanger 4 is connected to one end of the primary pipe network water supply pipe 11; the heat source outlet end of the plate heat exchanger 4 is connected to one end of the primary pipe network return pipe 19, the other end of the primary pipe network return pipe 19 is connected to the water inlet end of the condensate tank 8, the water outlet end of the condensate tank 8 is connected to one end of the output water pipe 18, and the condensate pump 9 is installed on the output water pipe 18;

[0026] The cold source inlet end of the plate heat exchanger 4 is connected to one end of the secondary pipe network return pipe 12, and the cold source outlet end of the plate heat exchanger 4 is connected to one end of the secondary pipe network water supply pipe 13; the secondary pipe network return pipe 12 is connected to one end of the water supply pipe 14 through a tee, and the other end of the water supply pipe 14 is connected to the water outlet of the softening water tank 5, the water supply pump 10 is installed on the water supply pipe 14, and the circulation pump 6 is installed on the secondary pipe network return pipe 12; the primary pipe network water supply pipe 11, the output water pipe 18, the secondary pipe network return pipe 12 and the secondary pipe network water supply pipe 13 all pass through the connecting pipe opening 25.

[0027] Working principle:

[0028] The steam or high-temperature water provided by the municipal main network enters from the inlet of the primary pipe network water supply pipe 11, and then enters the plate heat exchanger 4 through the heat source inlet end of the plate heat exchanger 4 for indirect heat exchange. The temperature after heat exchange in the plate heat exchanger 4 is reduced, so that the steam or high-temperature water becomes condensed water and flows out from the heat source outlet end of the plate heat exchanger 4, and then flows out from the primary pipe network return pipe 19 to the condensate tank 8; and the user's heating return water enters from the secondary pipe network return pipe 12 through the action of the circulating pump 6, and then enters the plate heat exchanger 4 through the cold source inlet end of the plate heat exchanger 4, so that the user's heating return water can be heated, and the heated water then flows out from the cold source outlet end of the plate heat exchanger 4 and flows out along the secondary pipe network water supply pipe 13 for user use, and the cycle repeats.

[0029] In addition, by providing the water supply pipe 14, the water supply pump 10 can be operated to automatically replenish the water in the secondary pipe network to ensure stable system pressure and normal operation.

[0030] In this embodiment, the plate heat exchanger 4, the softening water tank 5 and the circulating pump 6 are installed on the lower base 3, and the condensate tank 8, the condensate pump 9 and the make-up water pump 10 are installed on the upper base 7, so that the lower base 3 and the upper base 7 can be used as the lower unit module and the upper unit module respectively, so that the lower unit module and the upper unit module can be respectively loaded into the lower container 1 and the upper container 2, and the pipelines that need to be connected between the lower unit module and the upper unit module can be connected to the corresponding pipelines through the upper and lower unit connection flanges 26, that is, the primary pipe network return pipe 19, the output water pipe 18 and the make-up water pipe 14 are respectively provided with the upper half of the primary pipe network return pipe, the upper The half-section output water pipe and the upper half-section water supply pipe and the lower half-section primary pipe network return water pipe, the lower half-section output water pipe and the lower half-section water supply pipe, wherein the upper half-section primary pipe network return water pipe, the upper half-section output water pipe and the upper half-section water supply pipe are located on the upper unit module, the lower half-section primary pipe network return water pipe, the lower half-section output water pipe and the lower half-section water supply pipe are located on the lower unit module, the upper half-section primary pipe network return water pipe and the lower half-section primary pipe network return water pipe are connected to each other through the upper and lower unit connection flanges 26, the upper half-section output water pipe and the lower half-section output water pipe are connected to each other through the upper and lower unit connection flanges 26, and the upper half-section water supply pipe and the lower half-section water supply pipe are connected to each other through the upper and lower unit connection flanges 26. After the various pipelines between the lower unit module and the upper unit module are connected, the lower container 1 and the upper container 2 are fixed together to form a double-layer container. Thereby, the machine room cost is saved, the on-site installation efficiency is improved, and the space is saved, and it can be applied to places where the machine room requires a small space. Furthermore, the upper unit module and the lower unit module can be protected by the lower container 1 and the upper container 2 to avoid aging problems caused by wind and sun.

[0031] Embodiment 2, as a further preferred solution of Embodiment 1, an entrance and exit 24 is provided at a corner of the upper base 7, one end of the escalator 15 is fixedly connected to the entrance and exit 24, and the other end of the escalator 15 is fixedly connected to the lower base 3. Thus, the staff can enter the upper container 2 upward along the entrance and exit 24 through the escalator 15, so as to facilitate the inspection and maintenance of the upper unit module.

[0032] Embodiment 3, as a further preferred solution of Embodiment 1, exhaust vents 16 are provided on the sides of the lower container 1 and the upper container 2; container inspection doors 17 are provided on the front and rear sides of the lower container 1. The exhaust vents 16 can realize the fluidity of the air in the lower container 1 and the upper container 2, and the staff can enter the lower container 1 through the container inspection door 17, and then enter the upper container 2 through the escalator 15 along the entrance 24. In addition, in this embodiment, both the lower container 1 and the upper container 2 can be provided with an insulation layer to avoid the problem of freezing and cracking of the pipeline when used in cold weather, and are equipped with lighting equipment and fire extinguishing equipment.

[0033] Embodiment 4, as a further preferred solution of embodiment 1, control valves are installed on the primary pipe network water supply pipe 11, the primary pipe network return pipe 19, the secondary pipe network return pipe 12, the secondary pipe network water supply pipe 13, the water supply pipe 14 and the output water pipe 18. The control valve can be used to control the opening and closing of the primary pipe network water supply pipe 11, the primary pipe network return pipe 19, the secondary pipe network return pipe 12, the secondary pipe network water supply pipe 13, the water supply pipe 14 and the output water pipe 18.

[0034] Embodiment 5, as a further preferred solution of Embodiment 1, a first Y-type filter 21 is installed on the primary pipe network water supply pipe 11, and a second Y-type filter 22 is installed on the secondary pipe network return pipe 12. The first Y-type filter 21 and the second Y-type filter 22 can respectively achieve filtering effects on steam or high-temperature water and user's heating return water, thereby effectively removing impurities in the water and ensuring the quality of water entering the plate heat exchanger 4.

[0035] Embodiment 6, as a further preferred embodiment of embodiment 1, the primary pipe network water supply pipe 11, the primary pipe network return pipe 19, the secondary pipe network return pipe 12 and the secondary pipe network water supply pipe 13 are respectively provided with parameter measuring devices, and the parameter measuring devices can be a pressure gauge and a thermometer with integrated display and remote transmission. The pressure gauge can be a pressure gauge with display and remote transmission function. The thermometer can be a thermometer with display and remote transmission function. The parameter measuring device can also be a pressure sensor and / or a temperature sensor. The parameter measuring device can also be a pressure transmitter, a temperature transmitter and a flow meter.

[0036] Embodiment 7, as a further preferred solution of Embodiment 1, an electric control cabinet 20 is installed above the lower base 3, and the signal output end of the parameter measuring device is connected to the signal input end of the electric control cabinet 20, and the signal output end of the electric control cabinet 20 is respectively connected to the condensate pump 9, the make-up water pump 10 and the circulation pump 6. By connecting the signal output end of the parameter measuring device to the signal input end of the electric control cabinet 20, the measurement data of each pipeline can be collected. Thereby, the condensate pump 9, the make-up water pump 10 and the circulation pump 6 can be accurately controlled; so as to control the make-up water amount and the water flow in the secondary pipe network return pipe 12.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-layer box-type heat exchange unit, characterized in that: The invention comprises a lower container (1) and an upper container (2), wherein the upper container (2) is fixedly connected to the upper part of the lower container (1), a lower base (3) is arranged at the bottom of the lower container (1), a pipe connection opening (25) is provided on the surface of the lower base (3), a plate heat exchanger (4), a softening water tank (5) and a circulation pump (6) are installed in the lower container (1) and above the lower base (3); an upper base (7) is arranged at the bottom of the upper container (2), and a condensate tank (8), a condensate pump (9) and a water supply pump (10) are installed in the upper container (2) and above the upper base (7); The heat source inlet end of the plate heat exchanger (4) is connected to one end of a primary pipe network water supply pipe (11); the heat source outlet end of the plate heat exchanger (4) is connected to one end of a primary pipe network return pipe (19); the other end of the primary pipe network return pipe (19) is connected to the water inlet end of a condensate tank (8); the water outlet end of the condensate tank (8) is connected to one end of an output water pipe (18); and the condensate pump (9) is installed on the output water pipe (18); The cold source inlet end of the plate heat exchanger (4) is connected to one end of the secondary pipe network return pipe (12), and the cold source outlet end of the plate heat exchanger (4) is connected to one end of the secondary pipe network water supply pipe (13); the secondary pipe network return pipe (12) is connected to one end of a water supply pipe (14) via a tee, and the other end of the water supply pipe (14) is connected to the water outlet of the softening water tank (5); the water supply pump (10) is installed on the water supply pipe (14), and the circulation pump (6) is installed on the secondary pipe network return pipe (12); the primary pipe network water supply pipe (11), the output water pipe (18), the secondary pipe network return pipe (12) and the secondary pipe network water supply pipe (13) all pass through the pipe connection opening (25).

2. A double-layer box-type heat exchange unit according to claim 1, characterized in that: An inlet and outlet (24) is provided at a corner of the upper base (7), one end of the escalator (15) is fixedly connected to the inlet and outlet (24), and the other end of the escalator (15) is fixedly connected to the lower base (3).

3. A double-layer box-type heat exchange unit according to claim 1, characterized in that: The sides of the lower container (1) and the upper container (2) are both provided with exhaust vents (16); and the front and rear sides of the lower container (1) are both provided with container inspection doors (17).

4. A double-layer box-type heat exchange unit according to claim 1, characterized in that: Control valves are installed on the primary pipe network water supply pipe (11), the primary pipe network water return pipe (19), the secondary pipe network water return pipe (12), the secondary pipe network water supply pipe (13), the water replenishment pipe (14) and the output water pipe (18).

5. The double-layer box-type heat exchange unit according to claim 1, characterized in that: A first Y-shaped filter (21) is installed on the primary pipe network water supply pipe (11), and a second Y-shaped filter (22) is installed on the secondary pipe network water return pipe (12).

6. A double-layer box-type heat exchange unit according to claim 5, characterized in that: The primary pipe network water supply pipe (11), the primary pipe network return pipe (19), the secondary pipe network return pipe (12) and the secondary pipe network water supply pipe (13) are each provided with a parameter measuring device, wherein the parameter measuring device is one or a combination of a pressure gauge, a pressure sensor, a thermometer, a temperature sensor or a flow meter.

7. A double-layer box-type heat exchange unit according to claim 6, characterized in that: An electric control cabinet (20) is installed above the lower base (3); a signal output end of the parameter measuring device is connected to a signal input end of the electric control cabinet (20); and the signal output end of the electric control cabinet (20) is respectively connected to a condensate pump (9), a water supply pump (10), and a circulation pump (6).

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