Energy-saving boiler water supply system

Abstract

The invention discloses an energy-saving boiler water supply system which comprises soft water preparation equipment, soft water cooling equipment, kinetic energy equipment and a steam boiler for production, the soft water preparation equipment is connected with the soft water cooling equipment through a first pipeline, the soft water cooling equipment is connected with the kinetic energy equipment through a second pipeline, and the kinetic energy equipment is connected with a water feeder through a third pipeline; the water feeder is connected with the steam boiler for production through a fourth pipeline, the high-pressure boiler is connected with the water feeder through a fifth pipeline, the first pipeline is connected with the second pipeline through a bypass pipeline, a first electric valve is arranged on the bypass pipeline, and a thermometer is arranged on the first pipeline. According to the energy-saving boiler system, kinetic energy equipment can be cooled, heat can be effectively recycled, meanwhile, the electric energy consumption of the boiler system can be effectively reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The invention relates to a water supply system, in particular to an energy-saving boiler water supply system. Background Art

[0002] The cigarette factory is equipped with a large number of kinetic energy equipment, which provide compressed air, chilled water, etc. for production. The motors and compressors inside the kinetic energy equipment convert electrical energy into thermal energy when they are running, and the compressed gas is also a high-temperature gas. The traditional cooling method is to absorb the heat energy through cooling water and send it to the cooling tower for cooling, which causes heat energy waste. In addition, the cigarette factory is equipped with multiple boilers to provide steam for the production workshop, and a softening water station is required to produce softened water. Due to the high steam pressure of the boiler, it is necessary to continuously supply softened water to the boiler through a high-pressure multi-stage pump, which consumes a lot of electricity. Therefore, it is urgent to optimize the system to solve the problems of heat energy waste and high electricity consumption. Summary of the invention

[0003] The purpose of the present invention is to provide an energy-saving boiler water supply system to solve the technical problems in the prior art. It can not only cool the kinetic energy equipment, but also effectively recover the heat, and at the same time effectively reduce the electricity consumption of the boiler system, thereby playing a role in energy saving.

[0004] The present invention provides an energy-saving boiler water supply system, comprising a soft water preparation device, a soft water cooling device, a kinetic energy device and a production steam boiler, wherein the soft water preparation device is connected to the soft water cooling device through a first pipe, the soft water cooling device is connected to the kinetic energy device through a second pipe, the kinetic energy device is connected to a water supplier through a third pipe, the water supplier is connected to the production steam boiler through a fourth pipe, and further comprising a high-pressure boiler, the high-pressure boiler is connected to the water supplier through a fifth pipe, the first pipe is connected to the second pipe through a bypass pipe, the bypass pipe is provided with a first electric valve, and the first pipe is provided with a thermometer.

[0005] In the aforementioned energy-saving boiler water supply system, preferably, the soft water preparation equipment includes a soft water station, a first pump group, a softened water tank and a second pump group, the soft water station is connected to the softened water tank through a sixth pipe, the first pump group is installed on the sixth pipe, the softened water tank is connected to the soft water cooling equipment through the first pipe, and the second pump group is installed on the first pipe.

[0006] In the aforementioned energy-saving boiler water supply system, preferably, the third pipeline is connected to the softened water tank through a twentieth pipeline, and a second electric valve is provided on the twentieth pipeline.

[0007] In the aforementioned energy-saving boiler water supply system, preferably, the soft water cooling equipment includes a cooler and a cooling tower, the soft water inlet on the cooler is connected to the first pipe, the soft water outlet on the cooler is connected to the second pipe, the cooling water outlet on the cooler is connected to the water inlet of the cooling tower through a seventh pipe, and the water outlet of the cooling tower is connected to the cooling water inlet of the cooler through an eighth pipe.

[0008] In the aforementioned energy-saving boiler water supply system, preferably, the water supply device includes a first water tank, a second water tank and a buffer water tank, the first water tank is provided with a first sprayer and a first ejector, the second water tank is provided with a second sprayer and a second ejector, the first water tank is connected to the buffer water tank through a ninth pipe, the second water tank is connected to the buffer water tank through a tenth pipe, the third pipe is connected to the eleventh pipe and the twelfth pipe through a three-way joint, the eleventh pipe is connected to the first sprayer, the twelfth pipe is connected to the second sprayer, the fifth pipe is connected to the thirteenth pipe and the fourteenth pipe through a three-way joint, the thirteenth pipe is connected to the first ejector, and the fourteenth pipe is connected to the second ejector.

[0009] In the aforementioned energy-saving boiler water supply system, preferably, the first water tank and the second water tank are both provided with a liquid level gauge, a pressure gauge and a first exhaust valve, and the buffer water tank is provided with a second exhaust valve.

[0010] In the aforementioned energy-saving boiler water supply system, preferably, the buffer water tank is connected to the production steam boiler through the fourth pipeline, and the buffer water tank is connected to the high-pressure boiler through the fifteenth pipeline.

[0011] Compared with the prior art, the present invention includes a soft water preparation device, a soft water cooling device, a kinetic energy device and a production steam boiler, wherein the soft water preparation device is connected to the soft water cooling device through a first pipeline, the soft water cooling device is connected to the kinetic energy device through a second pipeline, the kinetic energy device is connected to a water supply device through a third pipeline, the water supply device is connected to the production steam boiler through a fourth pipeline, and also includes a high-pressure boiler, the high-pressure boiler is connected to the water supply device through a fifth pipeline, the first pipeline is connected to the second pipeline through a bypass pipeline, a first electric valve is arranged on the bypass pipeline, and a thermometer is arranged on the first pipeline. The present invention arranges a thermometer on the first pipeline, and when the thermometer detects that the temperature of the softened water stored in the soft water cooling device is low, the softened water is directly supplied to the kinetic energy device through the bypass pipeline to absorb its heat energy, thereby reducing the time of starting the soft water cooling device and saving electric energy.

[0012] The softened water with increased temperature is connected to the water supply device through the third pipe. The water supply device is used to replace the multi-stage pressure pump in the prior art, which saves electric energy. The high-temperature softened water is supplied to the production steam boiler, which saves fuel for the production steam boiler and improves the efficiency of the production steam boiler. The present invention not only recovers heat energy, but also reduces the use of electric energy, thus playing a role in energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Description of the accompanying drawings: kinetic energy equipment 1, production steam boiler 2, first pipeline 3, second pipeline 4, third pipeline 5, water supplier 6, fourth pipeline 7, fifth pipeline 8, high-pressure boiler 9, soft water station 10, first pump group 11, softened water tank 12, second pump group 13, sixth pipeline 14, bypass pipeline 15, first electric valve 16, thermometer 17, cooler 18, cooling tower 19, seventh pipeline 20, eighth pipeline 21, twentieth pipeline 22, second electric valve 23, first water tank 24, second water tank 25, buffer water tank 26, first sprayer 27, first ejector 28, second sprayer 29, second ejector 30, ninth pipeline 31, tenth pipeline 32, the eleventh pipeline 33, the twelfth pipeline 34, the thirteenth pipeline 35, the fourteenth pipeline 36, the liquid level meter 37, the pressure meter 38, the first exhaust valve 39, the second exhaust valve 40, the fifteenth pipeline 41, the third electric valve 42, the fourth electric valve 43, the fifth electric valve 44, the third pump group 45, the sixteenth pipeline 46, the energy-consuming equipment 47, the sixth electric valve 48, the fourth pump group 49, the second steam boiler 50, the seventeenth pipeline 51, the steam cylinder 52, the eighteenth pipeline 53, the steam-consuming equipment 54, the first steam electric valve 55, the fifth pump group 56, the first water inlet electric valve 57, the nineteenth pipeline 58, the second steam electric valve 59, and the second water inlet electric valve 60. DETAILED DESCRIPTION

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0016] Embodiments of the present invention: Figure 1As shown, an energy-saving boiler water supply system includes a soft water preparation device, a soft water cooling device, a kinetic energy device 1 and a production steam boiler 2, the soft water preparation device is connected to the soft water cooling device through a first pipe 3, the soft water cooling device is connected to the kinetic energy device 1 through a second pipe 4, the kinetic energy device 1 is connected to a water supplier 6 through a third pipe 5, the water supplier 6 is connected to the production steam boiler 2 through a fourth pipe 7, and also includes a high-pressure boiler 9, the high-pressure boiler 9 is connected to the water supplier 6 through a fifth pipe 8, the first pipe 3 is connected to the second pipe 4 through a bypass pipe 15, the bypass pipe 15 is provided with a first electric valve 16, and the first pipe 3 is provided with a thermometer 17.

[0017] The soft water preparation equipment is used to prepare softened water and store softened water. The softened water enters the first pipe 3. The thermometer 17 detects the softened water temperature in the first pipe 3 in real time. When the softened water temperature is lower than the preset value, the bypass pipe 15 is opened to allow the softened water to bypass the soft water cooling equipment and be directly sent to the kinetic energy device 1 through the second pipe 4. The softened water absorbs its heat energy in the kinetic energy device 1 to cool the kinetic energy device 1. The heated softened water then enters the water supply device 6 through the third pipe 5, and supplies water to the production steam boiler 2 through the water supply device 6.

[0018] Through this structural design, the soft water cooling device is started only when the softened water temperature exceeds the preset value. Under normal circumstances, the soft water cooling device does not need to work, which effectively reduces the use of electric energy. The heated softened water is sent to the production steam boiler 2 through the water supply device 6, which reduces the fuel required by the production steam boiler 2, reduces energy consumption, effectively recovers heat energy, and achieves an energy-saving effect.

[0019] In a specific embodiment, the soft water preparation equipment includes a soft water station 10, a first pump group 11, a softened water tank 12 and a second pump group 13. The soft water station 10 is connected to the softened water tank 12 through a sixth pipeline 14, the first pump group 11 is installed on the sixth pipeline 14, the softened water tank 12 is connected to the soft water cooling equipment through a first pipeline 3, and the second pump group 13 is installed on the first pipeline 3.

[0020] A third electric valve 42 is provided at the connection position between the first pipeline 3 and the soft water cooling device, and a valve is provided at the connection position between the second pipeline 4 and the soft water cooling device; the softened water generated by the soft water station 10 enters the softened water tank 12 for temporary storage through the sixth pipeline 14 under the action of the first pump group 11, and the softened water in the softened water tank 12 enters the first pipeline 3 under the action of the second pump group 13. The thermometer 17 on the first pipeline 3 detects the softened water temperature in the first pipeline 3 in real time, and the thermometer 17 sends the temperature information to the PLC programmable controller in real time. It should be noted that the PLC programmable controller is a prior art, and the PLC programmable controller can be directly purchased and obtained. The PLC programmable controller is not shown in the figure. When it is detected that the softened water temperature is lower than the preset value, the PLC programmable controller controls the first electric valve 16 to open and controls the third electric valve 42 to close. At this time, the softened water flows into the second pipeline 4 through the bypass pipeline 15, and enters the kinetic energy device 1 through the second pipeline 4 to cool it, bypassing the soft water cooling device. The soft water cooling device does not work at this time, reducing the use of electric energy.

[0021] Since the production steam boiler 2 is constantly running, the production steam boiler 2 continuously uses softened water to generate steam, so the softened water in the softened water tank 12 is live water, and the softened water in the softened water tank 12 is constantly used and replenished, so that it can always maintain a low temperature. Only when the production steam boiler 2 is under a low load and the water consumption is relatively small, the softened water temperature in the softened water tank 12 may be high. When it is detected that the softened water temperature is higher than the preset value, the PLC programmable controller controls the third electric valve 42 to open and controls the first electric valve 16 to close. At this time, the softened water enters the soft water cooling device to cool down and then enters the kinetic energy device 1 through the second pipe 4 to cool it down.

[0022] The third pipeline 5 is connected to the softened water tank 12 through the twentieth pipeline 22, and the second electric valve 23 is arranged on the twentieth pipeline 22. When the water consumption of the production steam boiler 2 is small, the required softened water volume is reduced, but in order to ensure the heat dissipation efficiency of the kinetic energy device 1, the flow rate of softened water needs to be guaranteed, so the softened water after heating enters the water supply device 6, and the excess enters the softened water tank 12 through the twentieth pipeline 22, and the working state of the second electric valve 23 on the twentieth pipeline 22 is controlled by the PLC programmable controller.

[0023] Furthermore, the soft water cooling equipment includes a cooler 18 and a cooling tower 19, the soft water inlet on the cooler 18 is connected to the first pipe 3, the soft water outlet on the cooler 18 is connected to the second pipe 4, the cooling water outlet on the cooler 18 is connected to the inlet of the cooling tower 19 through the seventh pipe 20, and the outlet of the cooling tower 19 is connected to the cooling water inlet of the cooler 18 through the eighth pipe 21.

[0024] When the soft water cooling device is working, softened water enters the cooler 18, and the softened water exchanges heat with the low-temperature cooling water in the cooler 18 to cool down. The cooled softened water flows out of the cooler 18 and enters the kinetic energy device 1 through the valve, the second pipeline 4, and the fourth electric valve 43 to absorb its heat energy. The fourth electric valve 43 is arranged at the connection position between the second pipeline 4 and the kinetic energy device 1.

[0025] The cooling water heated in the cooler 18 enters the cooling tower 19 through the seventh pipe 20 to cool down, and then returns to the cooler 18 through the eighth pipe 21 after cooling down, and the cycle continues. The seventh pipe 20 is provided with a fifth electric valve 44 and a valve, and the eighth pipe 21 is provided with a valve and a third pump group 45. The fifth electric valve 44 and the third pump group 45 are both controlled by a PLC programmable controller.

[0026] The cooler 18 is used to isolate the kinetic energy device 1 from the cooling tower 19, thereby preventing impurities in the cooling water of the cooling tower 19 from entering the kinetic energy device 1 and causing blockage and scaling.

[0027] The kinetic energy device 1 is connected to the energy-consuming device 47 through the sixteenth pipeline 46, and the sixteenth pipeline 46 is provided with a sixth electric valve 48 and a fourth pump group 49. The different power energies produced by the kinetic energy device 1 are continuously supplied to the energy-consuming device 47 through the sixth electric valve 48, the fourth pump group 49 and the sixteenth pipeline 46.

[0028] Furthermore, the water supply device 6 includes a first water tank 24, a second water tank 25 and a buffer water tank 26. The first water tank 24 is provided with a first sprayer 27 and a first ejector 28, the second water tank 25 is provided with a second sprayer 29 and a second ejector 30, the first water tank 24 is connected to the buffer water tank 26 through a ninth pipe 31, the second water tank 25 is connected to the buffer water tank 26 through a tenth pipe 32, the ninth pipe 31 and the tenth pipe 32 are both provided with electric valves, the third pipe 5 is connected to the eleventh pipe 33 and the twelfth pipe 34 through a three-way joint, the eleventh pipe 33 is connected to the first sprayer 27, the twelfth pipe 34 is connected to the second sprayer 29, the fifth pipe 8 is connected to the thirteenth pipe 35 and the fourteenth pipe 36 through a three-way joint, the thirteenth pipe 35 is connected to the first ejector 28, and the fourteenth pipe 36 is connected to the second ejector 30.

[0029] The first water tank 24 and the second water tank 25 are both provided with a liquid level gauge 37 , a pressure gauge 38 and a first exhaust valve 39 , and the buffer water tank 26 is provided with a second exhaust valve 40 .

[0030] The buffer water tank 26 is connected to the production steam boiler 2 via the fourth pipeline 7 , and the buffer water tank 26 is connected to the high-pressure boiler 9 via the fifteenth pipeline 41 .

[0031] When softened water is supplied to the boiler system, due to the high pressure of the production steam boiler 2, the softened water needs to be pressurized by a multi-stage booster pump to exceed the pressure inside the production steam boiler 2 before it can flow into the production steam boiler 2 for use. Cigarette factories generally install multiple production steam boilers. Figure 1 The production steam boiler 2 and the second production steam boiler 50 represent multiple installed production steam boilers. The steam generated by the production steam boiler 2 enters the sub-cylinder 52 through the seventeenth pipe 51, and the steam generated by the second production steam boiler 50 enters the sub-cylinder 52 through the eighteenth pipe 53. The sub-cylinder 52 then distributes the steam to the steam-using equipment 54 for use. Valves are provided on the seventeenth pipe 51 and the eighteenth pipe 53. In this embodiment, the multi-stage booster pump in the prior art is replaced by a water supply device 6 and a high-pressure boiler 9. The steam pressure generated by the high-pressure boiler 9 is greater than the pressure of the production steam boiler 2 and the second production steam boiler 50. Therefore, the water supply device 6 is provided with pressure by the high-pressure boiler 9, so that the softened water in the water supply device 6 can enter the production steam boiler 2 and the second production steam boiler 50. The device can reduce the use of electric energy.

[0032] Specifically, when the pressure gauge 38 detects that the pressure in the first water tank 24 of the water supply device 6 is low, but the liquid level gauge 37 detects that the water level in the first water tank 24 is still high, that is, it has not reached the low water level, the PLC programmable controller controls the first steam electric valve 55 on the thirteenth pipeline 35 to open, and the high-pressure steam generated by the high-pressure boiler 9 enters the first injector 28 in the first water tank 24 through the fifth pipeline 8 and the thirteenth pipeline 35. The high-pressure steam is rapidly sprayed into the top of the first water tank 24 through the first injector 28, so that the first water tank 24 always maintains a sufficiently high pressure, so that the softened water therein can be continuously supplied to the buffer water tank 26, and then the buffer water tank 26 is used to supply water to the production steam boiler 2 and the second production steam boiler 50.

[0033] If the water level of the high-pressure boiler 9 is low and needs to be replenished, the PLC programmable controller controls the fifth pump group 56 on the fifteenth pipeline 41 to start, and the high-pressure softened water in the buffer water tank 26 is pressurized again by the fifth pump group 56. The pressure of the softened water is greater than the pressure of the high-pressure boiler 9, so that the softened water enters the high-pressure boiler 9 through the fifteenth pipeline 41. When the water level in the high-pressure boiler 9 reaches the set high water level, the fifth pump group 56 stops running, thereby stopping the water supply to the high-pressure boiler 9.

[0034] When the liquid level meter 37 detects that the water level in the first water tank 24 is low and reaches the set low water level, the PLC programmable controller controls the first water inlet electric valve 57 on the eleventh pipeline 33 to open, and the first steam electric valve 55 is in a closed state. The softened water after absorbing the thermal energy of the kinetic energy device 1 enters the first sprayer 27 through the third pipeline 5 and the eleventh pipeline 33, and is sprayed into the first water tank 24 through the first sprayer 27. The softened water sprayed by the first sprayer 27 can also quickly absorb the high-pressure steam in the first water tank 24, so that the pressure in the first water tank 24 is quickly reduced, even to negative pressure, so that the softened water can be smoothly sprayed into the first water tank 24 at a lower pressure. After the flash steam in the first water tank 24 is absorbed by the softened water, if there is air, it can be discharged through the first exhaust valve 39 at the top. When the liquid level meter 37 detects that the water level in the first water tank 24 reaches the high water level, the first water inlet electric valve 57 is closed to stop the water inlet, while the first steam electric valve 55 is opened, and the high-pressure boiler 9 pressurizes the first water tank 24. At this time, the first water tank 24 is in a standby water supply state.

[0035] When the first water tank 24 of the water supply device 6 is in the water replenishment state, the second water tank 25 of the water supply device 6 is responsible for supplying water to the production steam boiler 2 and the second production steam boiler 50. At this time, if the production steam boiler 2 and the second production steam boiler 50 need to be replenished with water, the liquid level gauge on the second water tank 25 detects that the liquid level of the second water tank 25 is relatively high, and the pressure gauge detects that the pressure in the second water tank 25 is large enough, then the electric valve on the tenth pipe 32 is opened, and the water in the second water tank 25 enters the buffer water tank 26 through the tenth pipe 32 under the pressure of the high-pressure steam. The buffer water tank 26 is still always full of water, and the pressure in the second water tank 25 is also transmitted to the buffer water tank 26 through the tenth pipe 32. The buffer water tank 26 is still always in a high-pressure state, and the softened water in the buffer water tank 26 enters the production steam boiler 2 and the second production steam boiler 50 through the fourth pipe 7 and the nineteenth pipe 58 respectively.

[0036] When the pressure gauge detects that the pressure in the second water tank 25 is low, but the liquid level gauge detects that the water level in the second water tank 25 is still high, that is, it has not reached the low water level, the PLC programmable controller controls the second steam electric valve 59 on the fourteenth pipeline 36 to open, and the high-pressure steam generated by the high-pressure boiler 9 enters the second injector 30 through the fifth pipeline 8 and the fourteenth pipeline 36. The high-pressure steam is quickly sprayed into the top of the second water tank 25 through the second injector 30, so that the second water tank 25 always maintains a sufficiently high pressure, so that the softened water therein can be continuously supplied to the buffer water tank 26, and then the buffer water tank 26 is used to supply water to the production steam boiler 2 and the second steam boiler 50 for production.

[0037] When the liquid level meter detects that the water level in the second water tank 25 is low and reaches the set low water level, the PLC programmable controller controls the second water inlet electric valve 60 on the twelfth pipeline 34 to open and the second steam electric valve 59 to close. The softened water after absorbing the thermal energy of the kinetic energy device 1 enters the second sprayer 29 through the third pipeline 5 and the twelfth pipeline 34, and is sprayed into the second water tank 25 through the second sprayer 29. The softened water sprayed by the second sprayer 29 can also quickly absorb the high-pressure steam in the second water tank 25, thereby reducing the pressure in the second water tank 25, or even negative pressure, so that the softened water can be smoothly sprayed into the second water tank 25 at a lower pressure. After the flash steam in the second water tank 25 is absorbed by the softened water, if there is air, it can be discharged through the first exhaust valve at the top. When the liquid level gauge detects that the water level in the second water tank 25 reaches the high water level, the second water inlet electric valve 60 is closed to stop the water inlet, while the second steam electric valve 59 is opened, and the high-pressure boiler 9 replenishes the pressure for the second water tank 25. Sufficient high pressure is always maintained in the second water tank 25. At this time, the second water tank 25 is in a standby water supply state.

[0038] By alternately supplying water to the buffer water tank 26 through the first water tank 24 and the second water tank 25, continuous water supply to the production steam boiler 2 and the second production steam boiler 50 is achieved, which not only does not require the installation of a multi-stage booster pump, thus saving electric energy, but also the high-pressure steam enters the production steam boiler 2 and the second production steam boiler 50 for use along with the softened water after entering the water supply device 6 and being absorbed by the water, which not only does not waste heat energy, but also saves fuel for the production steam boiler 2 and the second production steam boiler 50, thereby improving the efficiency of the production steam boiler 2 and the second production steam boiler 50. Since the buffer water tank 26 maintains high pressure, the high-pressure boiler 9 does not need to be installed with a high-pressure multi-stage pump, and only needs to be slightly pressurized again by the ordinary fifth pump group 56 to replenish the high-pressure boiler 9 with softened water, thereby also saving electric energy.

[0039] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. An energy-saving boiler water supply system, comprising a soft water preparation device, a soft water cooling device, a kinetic energy device (1) and a production steam boiler (2), characterized in that: The soft water preparation device is connected to the soft water cooling device via a first pipe (3), the soft water cooling device is connected to the kinetic energy device (1) via a second pipe (4), the kinetic energy device (1) is connected to a water supply device (6) via a third pipe (5), the water supply device (6) is connected to the production steam boiler (2) via a fourth pipe (7), and further comprises a high-pressure boiler (9), the high-pressure boiler (9) is connected to the water supply device (6) via a fifth pipe (8), the first pipe (3) is connected to the second pipe (4) via a bypass pipe (15), the bypass pipe (15) is provided with a first electric valve (16), and the first pipe (3) is provided with a thermometer (17).

2. The energy-saving boiler water supply system according to claim 1 is characterized in that: The soft water preparation device comprises a soft water station (10), a first pump group (11), a softened water tank (12) and a second pump group (13); the soft water station (10) is connected to the softened water tank (12) via a sixth pipeline (14); the first pump group (11) is installed on the sixth pipeline (14); the softened water tank (12) is connected to the soft water cooling device via the first pipeline (3); and the second pump group (13) is installed on the first pipeline (3).

3. The energy-saving boiler water supply system according to claim 2 is characterized in that: The third pipeline (5) is connected to the softened water tank (12) via a twentieth pipeline (22), and a second electric valve (23) is provided on the twentieth pipeline (22).

4. The energy-saving boiler water supply system according to claim 1 is characterized in that: The soft water cooling device comprises a cooler (18) and a cooling tower (19); the soft water inlet on the cooler (18) is connected to the first pipe (3); the soft water outlet on the cooler (18) is connected to the second pipe (4); the cooling water outlet on the cooler (18) is connected to the water inlet of the cooling tower (19) via a seventh pipe (20); and the water outlet of the cooling tower (19) is connected to the cooling water inlet of the cooler (18) via an eighth pipe (21).

5. The energy-saving boiler water supply system according to claim 1 is characterized in that: The water supply device (6) comprises a first water tank (24), a second water tank (25) and a buffer water tank (26); the first water tank (24) is provided with a first sprayer (27) and a first ejector (28); the second water tank (25) is provided with a second sprayer (29) and a second ejector (30); the first water tank (24) is connected to the buffer water tank (26) via a ninth pipe (31); the second water tank (25) is connected to the buffer water tank (26) via a tenth pipe (32); The pipeline (5) is connected to an eleventh pipeline (33) and a twelfth pipeline (34) through a three-way joint, the eleventh pipeline (33) is connected to the first sprayer (27), the twelfth pipeline (34) is connected to the second sprayer (29), the fifth pipeline (8) is connected to a thirteenth pipeline (35) and a fourteenth pipeline (36) through a three-way joint, the thirteenth pipeline (35) is connected to the first sprayer (28), and the fourteenth pipeline (36) is connected to the second sprayer (30).

6. The energy-saving boiler water supply system according to claim 5, characterized in that: The first water tank (24) and the second water tank (25) are both provided with a liquid level gauge (37), a pressure gauge (38) and a first exhaust valve (39), and the buffer water tank (26) is provided with a second exhaust valve (40).

7. The energy-saving boiler water supply system according to claim 5, characterized in that: The buffer water tank (26) is connected to the production steam boiler (2) via the fourth pipeline (7), and the buffer water tank (26) is connected to the high-pressure boiler (9) via a fifteenth pipeline (41).

Images