Energy-saving heating system

Abstract

The utility model provides an energy-saving heating system, and relates to the technical field of energy environmental protection. The energy-saving heating system comprises a waste heat supply device used for supplying waste heat return water; the heat source supply device is connected with the heat pump exchange device and used for providing heat source water to drive the heat pump exchange device to do work, and the heat source water becomes low-temperature heat source water after driving the heat pump exchange device to do work; and the heat pump exchange device is connected with the waste heat supply device and a heat supply network user, and is used for recovering heat in the waste heat return water and the low-temperature heat source water so as to heat the heat supply network return water of the heat supply network user. According to the energy-saving heating system, the problem that waste heat cannot be effectively utilized in the prior art is solved, energy waste is avoided, and the economical efficiency of the heating system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy and environmental protection, and in particular to an energy-saving heating system. Background Art

[0002] Energy is an important material basis for human survival and development, and a major strategic issue related to economic and social development. Energy conservation is the key to better construction and development of the market economy in my country. With the deepening of industrialization and urbanization in my country, energy resource consumption continues to increase, and energy crises and environmental degradation are becoming increasingly prominent. It has become a consensus to find energy supply methods with less pollution and obvious energy-saving and emission reduction effects. At present, a large amount of waste heat or waste heat is often generated in the production process of the factory. Among them, the waste heat of the auxiliary machines is often cooled and dissipated by setting up cooling towers. It is impossible to achieve effective energy cascade utilization, and energy losses are serious. This method causes a huge waste of heat and water resources. If the waste heat of these auxiliary machines is fully recovered and used for the heating system of this factory, the economy, energy saving and environmental performance of the system can be greatly improved. Therefore, there is an urgent need for a device to solve the above problems. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide an energy-saving heating system to solve the problem in the prior art that waste heat cannot be effectively utilized.

[0004] In order to achieve the above object, the present invention provides an energy-saving heating system, which includes:

[0005] Waste heat supply device, used to supply waste heat return water;

[0006] A heat source supply device is connected to the heat pump exchange device and is used to provide heat source water to drive the heat pump exchange device to work. After the heat source water drives the heat pump exchange device to work, it becomes low-temperature heat source water;

[0007] The heat pump exchange device is connected to the waste heat supply device and the heating network user, and is used to recover heat from the waste heat return water and the low-temperature heat source water to heat the heating network return water of the heating network user.

[0008] Specifically, the heat source supply device includes: a compressor and a constant pressure container;

[0009] The compressor is connected to the constant pressure container and is used to compress air into high-pressure air and deliver the high-pressure air into the constant pressure container;

[0010] The constant pressure container is connected to the heat pump exchange device, and is used to store heat source water and heat the heat source water through the high-pressure air.

[0011] Specifically, the heat source supply device further includes: a pressure absorbing component, which is arranged on the constant pressure container and is used to absorb the pressure generated by the high-pressure air entering the constant pressure container.

[0012] Specifically, the pressure absorption assembly includes: an absorption tank, sand and a sand delivery pump;

[0013] The absorption tank is arranged on the surface of the constant pressure container and is used to contain sand, and the pressure generated by the high-pressure air is absorbed by the contained sand;

[0014] The sand delivery pump is used to deliver sand into the absorption tank.

[0015] Specifically, the energy-saving heating system further includes: a controller for controlling the start and stop of the sand delivery pump.

[0016] Specifically, the pressure absorbing assembly further includes: an absorbing pad, which is arranged between the absorbing tank and the constant pressure container.

[0017] Specifically, the heat source supply device further includes: a pressure sensor, disposed in the constant pressure container and electrically connected to the controller, for detecting a pressure value in the constant pressure container;

[0018] The controller is used to control the start and stop of the sand delivery pump according to the pressure value.

[0019] Specifically, the heat source supply device further includes: a temperature sensor, which is arranged in the constant pressure container and is electrically connected to the controller, and is used to detect the temperature value of the heat source water in the constant pressure container;

[0020] The controller is also electrically connected to the compressor, and is further used to control the start and stop of the compressor according to the temperature value.

[0021] Specifically, the energy-saving heating system further includes: a leveling device, which is provided on the absorption tank and is used to level the sand fed into the absorption tank.

[0022] Specifically, the leveling device includes: a leveling scraper, a transverse plate, a first driver, a second driver and a pair of leveling guide rails;

[0023] The leveling scraper is connected to the driving shaft of the first driver, and the sand can be leveled and fed into the absorption tank by the rotation of the leveling scraper;

[0024] The first driver is disposed on the transverse plate and is electrically connected to the controller, and is used to drive the smoothing scraper to rotate;

[0025] A pair of flat guide rails are vertically arranged in the absorption tank and parallel to each other;

[0026] The two ends of the transverse plate are respectively slidably arranged on the pair of flat guide rails, and the transverse plate can slide along the extension direction of the flat guide rails;

[0027] The second driver is provided on the absorption tank and is electrically connected to the controller, and is used to drive the transverse plate to slide along the extension direction of the flat guide rail;

[0028] The controller is further configured to control the start and stop of the first driver and the second driver.

[0029] The energy-saving heating system provided by the present invention comprises a heat source supply device that supplies heat source water to a heat pump exchange device to drive the heat pump exchange device to work, and the heat pump exchange device recovers heat in the waste heat return water provided by the waste heat supply device while recovering heat in the low-temperature heat source water after the heat source water drives the heat pump exchange device to work. The heat in the waste heat return water and the low-temperature heat source water is recovered to heat the heat network return water, thereby completing heating for the heat network users, solving the problem in the prior art that waste heat cannot be effectively utilized, avoiding energy waste, and improving the economy of the heating system.

[0030] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0032] Figure 1 It is a schematic diagram of the structural layout of the energy-saving heating system provided by the present invention.

[0033] Description of Reference Numerals

[0034] 1-waste heat supply device; 2-heat source supply device; 3-heat pump exchange device; 4-heating network user; 5-leveling device; 11-waste heat water supply pipeline; 12-waste heat return pipeline; 21-compressor; 22-constant pressure container; 23-pressure absorption component; 24-heat source water supply pipeline; 25-heat source return pipeline; 231-absorption tank; 31-absorber; 32-generator; 33-condenser; 34-evaporator; 35-heat exchanger; 41-heating network return pipeline; 42-heating network water supply pipeline; 51-leveling scraper; 52-horizontal plate; 53-first drive; 54-leveling guide rail. DETAILED DESCRIPTION

[0035] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0036] Figure 1 This is a schematic diagram of the structural layout of the energy-saving heating system. Figure 1 As shown, the present invention provides an energy-saving heating system, which includes:

[0037] Waste heat supply device 1, used to supply waste heat return water;

[0038] The heat source supply device 2 is connected to the heat pump exchange device 3 and is used to provide heat source water to drive the heat pump exchange device 3 to work. After the heat source water drives the heat pump exchange device 3 to work, it becomes low-temperature heat source water;

[0039] The heat pump exchange device 3 is connected to the waste heat supply device 1 and the heating network user 4, and is used to recover heat from the waste heat return water and the low-temperature heat source water to heat the heating network return water of the heating network user 4.

[0040] In the energy-saving heating system provided by the present invention, the heat source supply device 2 provides heat source water to the heat pump exchange device 3 to drive the heat pump exchange device 3 to work, and the heat pump exchange device 3 works to recover the heat in the waste heat return water supplied by the waste heat supply device 1. The waste heat supply device 1 can be an auxiliary machine of a power plant, which recovers the waste heat in the auxiliary machine of the power plant for utilization, thereby improving energy utilization and avoiding energy waste. At the same time, the heat pump exchange device 3 can also recover the heat in the low-temperature heat source water, thereby improving energy utilization. The heat pump exchange device 3 heats the heat network return water of the heat network user 4 through the recovered heat, thereby completing heating for the heat network user 4, solving the problem that waste heat cannot be effectively utilized in the prior art, avoiding energy waste, and improving the economy of the heating system.

[0041] In one embodiment, the heat source supply device 2 includes: a compressor 21 and a constant pressure container 22;

[0042] The compressor 21 is connected to the constant pressure container 22 and is used to compress air into high-pressure air and deliver the high-pressure air into the constant pressure container 22;

[0043] The constant pressure container 22 is connected to the heat pump exchange device 3 and is used to store heat source water and heat the heat source water through the high-pressure air.

[0044] The compressor 21 uses off-peak electricity to compress the air into high-pressure air. The high-pressure air is sent to the constant-pressure container 22 for heat exchange with the heat source water to heat the heat source water. The heat of the high-pressure air is absorbed by the heat source water and stored in the constant-pressure container 22 through the heat source water, so that the heat pump exchange device 3 can be driven by the heat source water to perform work.

[0045] like Figure 1 As shown, the heat pump exchange device 3 is an absorption heat pump, which includes an absorber 31, a generator 32, a condenser 33, an evaporator 34 and a heat exchanger 35. The waste heat supply device 1 is connected to the evaporator 34 of the heat pump exchange device 3 through the waste heat water supply pipe 11 and the waste heat return pipe 12, so that the waste heat return water provided by the waste heat supply device 1 enters the evaporator 34 of the heat pump exchange device 3 through the waste heat water supply pipe 11, absorbs the heat in the waste heat return water through the evaporator 34, and the waste heat return water that loses heat flows out through the waste heat return pipe 12; the constant pressure container 22 of the heat source supply device 2 is connected to the heat source supply device 2 through the waste heat water supply pipe 11. The heat source water supply pipe 24 and the heat source return water pipe 25 are connected to the generator 32 and the heat exchanger 35 of the heat pump exchange device 3. The heat source water enters the generator 32 and the heat exchanger 35 in sequence through the heat source water supply pipe 24 and then flows out through the heat source return water pipe 25. The heat network return water pipe 41 and the heat network water supply pipe 42 of the heat network user 4 are connected to the absorber 31, the condenser 33 and the heat exchanger 35 of the heat pump exchange device 3. The heat network return water enters the heat pump exchange device 3 through the heat network return water pipe 41, flows through the absorber 31, the condenser 33 and the heat exchanger 35 in sequence, and finally flows out through the heat network supply water pipe 42. The constant pressure container 22 supplies heat source water to the heat pump exchange device 3 through the heat source water supply pipe 24 to drive the heat pump exchange device 3 to do work. The low-temperature heat source water formed after the work is returned to the constant pressure container 22 again through the heat source return water pipe 25. In order to facilitate the constant pressure container 22 to supply heat source water to the heat pump exchange device 3, an electric control valve is set on the heat source water supply pipe 24 to control the flow or stillness of the heat source water in the heat source water supply pipe 24, and a stop valve is set on the heat source return water pipe 25 to control the on and off of the heat source return water pipe 25; the waste heat return water of the waste heat supply device 1 enters the heat pump exchange device 3 through the waste heat supply water pipe 11, and the heat pump exchange device 3 recovers the heat in the waste heat return water, and the heat is lost. The heated waste heat return water flows out through the waste heat return water pipe 12. Electric control valves are provided on the waste heat water supply pipe 11 and the waste heat return water pipe 12 to correspondingly control the on-off of the waste heat supply water pipe 11 and the waste heat return water pipe 12; the heat network return water enters the heat pump exchange device 3 through the heat network return water pipe 41. The heat pump exchange device 3 recovers heat from the waste heat return water and the low-temperature heat source water to heat the heat network return water. The heated heat network return water is sent to the heat network user 4 through the heat network water supply pipe 42 for heating. An electric control valve is provided on the heat network return water pipe 41 to control the on-off of the heat network return water pipe 41, and a stop valve is provided on the heat network water supply pipe 42 to control the on-off of the heat network water supply pipe 42.

[0046] After high-pressure air is fed into the constant-pressure container 22, in order to avoid excessive pressure in the constant-pressure container 22 affecting the safe use of the constant-pressure container 22, the heat source supply device 2 also includes: a pressure absorption component 23, which is arranged on the constant-pressure container 22 and is used to absorb the pressure generated by the high-pressure air entering the constant-pressure container 22.

[0047] The pressure absorbing assembly 23 includes: an absorption tank 231, sand and a sand delivery pump;

[0048] The absorption tank 231 is arranged on the surface of the constant pressure container 22 and is used to contain sand, and the sand absorbs the pressure generated by the high-pressure air;

[0049] The sand delivery pump is used to deliver sand into the absorption tank 231 .

[0050] The energy-saving heating system further includes: a controller for controlling the start and stop of the sand delivery pump.

[0051] The pressure absorbing assembly 23 further includes an absorption pad disposed between the absorption tank 231 and the constant pressure container 22 .

[0052] The heat source supply device 2 further includes: a pressure sensor, which is disposed in the constant pressure container 22 and is electrically connected to the controller, and is used to detect the pressure value in the constant pressure container 22;

[0053] The controller is used to control the start and stop of the sand delivery pump according to the pressure value.

[0054] The heat source supply device 2 further includes: a temperature sensor, which is disposed in the constant pressure container 22 and is electrically connected to the controller, and is used to detect the temperature value of the heat source water in the constant pressure container 22;

[0055] The controller is also electrically connected to the compressor 21 and is further configured to control the start and stop of the compressor 21 according to the temperature value.

[0056] like Figure 1 As shown, an absorption tank 231 is set on the top of the constant pressure container 22, and sand is pumped into the absorption tank 231 by a sand pump. The pressure in the constant pressure container 22 is absorbed by the sand in the absorption tank 231, ensuring the safe use of the constant pressure container 22. In order to improve the absorption effect of the sand on the pressure in the constant pressure container 22, when the absorption tank 231 is set on the surface above the constant pressure container 22, an absorption pad is set between the absorption tank 231 and the constant pressure container 22, and the gap between the absorption tank 231 and the constant pressure container 22 is filled with the absorption pad to ensure that the sand in the constant pressure container 22 can stably absorb the pressure.

[0057] In order to accurately control the amount of sand in the absorption tank 231 and thus ensure the absorption effect of the pressure in the constant pressure container 22, the controller controls the start and stop of the sand delivery pump according to the pressure value in the constant pressure container 22 detected by the pressure sensor. When the pressure sensor detects that the pressure value in the constant pressure container 22 is greater than or equal to the set safety pressure threshold, the controller controls the sand delivery pump to start and deliver sand into the absorption tank 231. When the pressure sensor detects that the pressure value in the constant pressure container 22 is less than the set safety threshold, the controller controls the sand delivery pump to stop. At this time, the amount of sand in the absorption tank 231 can absorb the pressure in the constant pressure container 22.

[0058] The controller can also control the start and stop of the compressor 21. The temperature sensor detects the temperature of the heat source water in the constant pressure container 22. After the temperature of the heat source water reaches the set temperature for driving the heat pump exchange device 3 to work, the controller controls the compressor 21 to stop. When the temperature sensor detects that the temperature of the heat source water in the constant pressure container 22 has not reached the set temperature for driving the heat pump exchange device 3 to work, the controller controls the compressor 21 to work, and continuously delivers high-pressure air to the constant pressure container 22 to heat the heat source water to a temperature that can drive the heat pump exchange device 3 to work.

[0059] In order to ensure that the sand in the absorption tank 231 uniformly absorbs the pressure in the constant pressure container 22 , the energy-saving heating system further includes: a leveling device 5 , which is provided on the absorption tank 231 and is used to level the sand fed into the absorption tank 231 .

[0060] The leveling device 5 includes: a leveling scraper 51, a transverse plate 52, a first driver 53, a second driver and a pair of leveling guide rails 54;

[0061] The leveling scraper 51 is connected to the driving shaft of the first driver 53, and the sand can be leveled and fed into the absorption tank 231 by the rotation of the leveling scraper 51;

[0062] The first driver 53 is disposed on the transverse plate 52 and is electrically connected to the controller. The first driver 53 is used to drive the smoothing scraper 51 to rotate.

[0063] A pair of flat guide rails 54 are vertically disposed in the absorption tank 231 and are parallel to each other;

[0064] Both ends of the transverse plate 52 are slidably disposed on the pair of flat guide rails 54 , and the transverse plate 52 can slide along the extension direction of the flat guide rails 54 ;

[0065] The second driver is provided on the absorption tank 231 and is electrically connected to the controller. The second driver is used to drive the transverse plate 52 to slide along the extension direction of the flat guide rail 54.

[0066] The controller is further configured to control the start and stop of the first driver 53 and the second driver.

[0067] like Figure 1 As shown, two leveling guide rails 54 are arranged parallel to each other on the inner wall of the absorption tank 231, and both ends of the horizontal plate 52 are slidingly arranged on the leveling guide rails 54. The second driver drives the horizontal plate 52 to move on the leveling guide rails 54, and the first driver 53 is arranged on the horizontal plate 52. The driving shaft of the first driver 53 is arranged toward the bottom of the absorption tank 231, and a leveling scraper 51 is installed on the shaft of the first driver 53. The first driver 53 drives the leveling scraper 51 to rotate to scrape the sand fed into the absorption tank 231 flat, thereby avoiding local accumulation of sand in the absorption tank 231 and affecting the absorption of pressure in the constant pressure container 22. The second driver drives the horizontal plate 52 to move on the leveling guide rails 54, and can adjust the distance between the horizontal plate 52 and the sand surface in the absorption tank 231 to ensure that the leveling scraper 51 can level the sand surface.

[0068] The energy-saving heating system provided by the present invention comprises a heat source supply device that supplies heat source water to a heat pump exchange device to drive the heat pump exchange device to work, and the heat pump exchange device recovers heat in the waste heat return water provided by the waste heat supply device while recovering heat in the low-temperature heat source water after the heat source water drives the heat pump exchange device to work. The heat in the waste heat return water and the low-temperature heat source water is recovered to heat the heat network return water, thereby completing heating for the heat network users, solving the problem in the prior art that waste heat cannot be effectively utilized, avoiding energy waste, and improving the economy of the heating system.

[0069] The above describes in detail the optional implementation methods of the embodiments of the present invention in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation methods. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the scope of protection of the embodiments of the present invention.

[0070] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0071] In addition, various implementations of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

Claims

1. An energy-saving heating system, characterized in that: The energy-saving heating system comprises: A waste heat supply device (1) for supplying waste heat return water; The heat source supply device (2) is connected to the heat pump exchange device (3) and is used to provide heat source water to drive the heat pump exchange device (3) to perform work, and the heat source water becomes low-temperature heat source water after driving the heat pump exchange device (3) to perform work; The heat pump exchange device (3) is connected to the waste heat supply device (1) and the heat network user (4) and is used to recover heat from the waste heat return water and the low-temperature heat source water to heat the heat network return water of the heat network user (4).

2. The energy-saving heating system according to claim 1, characterized in that: The heat source supply device (2) comprises: a compressor (21) and a constant pressure container (22); The compressor (21) is connected to the constant pressure container (22) and is used to compress air into high-pressure air and deliver the high-pressure air into the constant pressure container (22); The constant pressure container (22) is connected to the heat pump exchange device (3) and is used to store heat source water and heat the heat source water through the high-pressure air.

3. The energy-saving heating system according to claim 2, characterized in that: The heat source supply device (2) further comprises: a pressure absorption component (23), which is arranged on the constant pressure container (22) and is used to absorb the pressure generated by the high-pressure air entering the constant pressure container (22).

4. The energy-saving heating system according to claim 3, characterized in that: The pressure absorption component (23) comprises: an absorption tank (231), sand particles, and a sand delivery pump; The absorption tank (231) is arranged to fit on the surface of the constant pressure container (22) and is used to contain sand, and the pressure generated by the high-pressure air is absorbed by the contained sand; The sand delivery pump is used to deliver sand into the absorption tank (231).

5. The energy-saving heating system according to claim 4, characterized in that: The energy-saving heating system further includes: a controller for controlling the start and stop of the sand delivery pump.

6. The energy-saving heating system according to claim 4, characterized in that: The pressure absorption component (23) further includes an absorption pad, which is arranged between the absorption tank (231) and the constant pressure container (22).

7. The energy-saving heating system according to claim 5, characterized in that: The heat source supply device (2) further includes: a pressure sensor, disposed in the constant pressure container (22), electrically connected to the controller, and used for detecting the pressure value in the constant pressure container (22); The controller is used to control the start and stop of the sand delivery pump according to the pressure value.

8. The energy-saving heating system according to claim 5, characterized in that: The heat source supply device (2) further comprises: a temperature sensor, which is arranged in the constant pressure container (22) and is electrically connected to the controller and is used to detect the temperature value of the heat source water in the constant pressure container (22); The controller is also electrically connected to the compressor (21), and is also used to control the start and stop of the compressor (21) according to the temperature value.

9. The energy-saving heating system according to claim 5, characterized in that: The energy-saving heating system further comprises: a leveling device (5), which is arranged on the absorption tank (231) and is used to level the sand particles fed into the absorption tank (231).

10. The energy-saving heating system according to claim 9, characterized in that: The leveling device (5) comprises: a leveling scraper (51), a transverse plate (52), a first driver (53), a second driver and a pair of leveling guide rails (54); The leveling scraper (51) is connected to the driving shaft of the first driver (53), and the sand can be leveled and sent into the absorption tank (231) through the rotation of the leveling scraper (51); The first driver (53) is arranged on the transverse plate (52) and is electrically connected to the controller, and the first driver (53) is used to drive the smoothing scraper (51) to rotate; A pair of flat guide rails (54) are vertically arranged in the absorption tank (231) and are parallel to each other; Both ends of the transverse plate (52) are respectively slidably arranged on the pair of flat guide rails (54), and the transverse plate (52) can slide along the extension direction of the flat guide rails (54); The second driver is provided on the absorption tank (231) and is electrically connected to the controller, and is used to drive the transverse plate (52) to slide along the extension direction of the flat guide rail (54); The controller is also used to control the start and stop of the first driver (53) and the second driver.

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