Heating equipment

Abstract

The invention relates to heating equipment. The equipment comprises a first generator set, a second generator set and a heating device, the first generator set is in a high-back-pressure working condition, and the second generator set is in a low-pressure cylinder cutting working condition; the exhaust end of the first generator set communicates with a water inlet of the heating equipment and the water inlet end of the heating device, and the water outlet end of the heating device communicates with the exhaust end of the second generator set and a water outlet of the heating equipment. Inlet water flows into the heating device through the water inlet, steam generated by the first generator set in the power generation process flows into the heating device through the exhaust end of the first generator set, and the inlet water and the steam generated by the first generator set in the power generation process are heated in the heating device to form heated water. Steam generated in the power generation process of the second generator set exchanges heat with heating water through the exhaust end of the second generator set to form heating water, and the heating water flows out through the water outlet. By adopting the method, the heating effect and the power generation income of the heating equipment can be ensured.

Description

Technical Field

[0001] This application relates to the field of heating, and particularly to a heating device. Background Art

[0002] During the power generation process of a generator set, steam is exhausted, and the heat of the exhausted steam can be used for heating. In northern regions, especially in Northeast China and Inner Mongolia, the winter temperature is low. With the development of cities, the demand for heating output by residents is increasing. Then, more power generation by the generator set is required to exhaust more heat. Under the background that the national electricity spot market trading is gradually promoted, the electricity trading price is more flexible. There have been zero or even negative electricity price phenomena in some regions during the large-scale generation of wind and solar green electricity. Therefore, more power generation by the generator set will result in lower power generation revenue. During the low power supply period, the power demand is low. At this time, it is necessary to deeply reduce the power generation load of the generator set, then the heating demand cannot be met. Therefore, it is impossible to balance the heating effect and the power generation revenue. Summary of the Invention

[0003] Based on this, in view of the above technical problems, it is necessary to provide a heating device that can balance the heating effect and the power generation revenue.

[0004] This application provides a heating device. The device includes: a first generator set, a second generator set, and a heating device. Among them, the first generator set is in a high back-pressure condition, and the second generator set is in a low-pressure cylinder cut-off condition;

[0005] The exhaust end of the first generator set is respectively connected to the water inlet of the heating device and the water inlet of the heating device. The water outlet end of the heating device is respectively connected to the exhaust end of the second generator set and the water outlet of the heating device;

[0006] Water enters the heating device through the water inlet of the heating device. The steam generated by the first generator set during the power generation process flows into the heating device through the exhaust end of the first generator set. The water inlet and the steam generated by the first generator set during the power generation process are heated in the heating device to form heated water. The steam generated by the second generator set during the power generation process exchanges heat with the heated water to form heating water, and the heating water flows out through the water outlet of the heating device.

[0007] In one embodiment, the device further includes: a pressure pump, and the pressure pump is arranged on the passage between the exhaust end of the first generator set and the water inlet end of the heating device.

[0008] In one embodiment, the device further includes: a first heat exchange device; the exhaust end of the first power generation set is respectively communicated with the water inlet of the heating device and the water inlet end of the heating device through the first heat exchange device; the water inlet flows into the first heat exchange device through the water inlet of the heating device, the steam generated during the power generation process of the first power generation set flows into the first heat exchange device through the exhaust end of the first power generation set, the water inlet and the steam generated during the power generation process of the first power generation set exchange heat in the first heat exchange device to form heat exchange water, and the heat exchange water flows into the heating device through the water inlet end of the heating device, and the heat exchange water is heated in the heating device to form heated water;

[0009] The heat exchange condensate in the first heat exchange device returns to the boiler of the first power generation set through the drain port of the first heat exchange device.

[0010] In one embodiment, the device further includes: a second heat exchange device; the exhaust end of the second power generation set is respectively communicated with the water outlet end of the heating device and the water outlet of the heating device through the second heat exchange device; the steam generated during the power generation process of the second power generation set exchanges heat with the heated water through the exhaust end of the second power generation set in the second heat exchange device to form heating water; the heat exchange condensate in the second heat exchange device returns to the boiler of the second power generation set through the drain port of the second heat exchange device.

[0011] In one embodiment, the device further includes: a first water storage device; the water inlet of the first water storage device is communicated with the water outlet end of the first heat exchange device, and the water outlet of the first water storage device is communicated with the water inlet end of the second heat exchange device.

[0012] In one embodiment, the device further includes: a second water storage device; the communication ports of the second water storage device are respectively communicated with the water outlet end of the first heat exchange device and the water inlet end of the heating device. When the heating device is at the peak power supply period, the communication ports of the second water storage device are in a water storage state, and when the heating device is at the low power supply period, the communication ports of the second water storage device are in a water outlet state.

[0013] In one embodiment, the water outlet end of the first heat exchange device is communicated with the water outlet of the first water storage device.

[0014] In one embodiment, the device further includes a flow valve, which is used to adjust the flow rate of at least one of the first path and the second path. The first path is the path between the water outlet end of the first heat exchange device and the water inlet end of the heating device, and the second path is the path between the water outlet end of the first heat exchange device and the water outlet of the first water storage device.

[0015] In one embodiment, the device further comprises: a controller; the controller is communicatively connected to the first power generation unit, the second power generation unit and the heating device respectively, the controller is configured to control a first power generation parameter of the first power generation unit and a second power generation parameter of the second power generation unit according to a heating output demand corresponding to the heating device, and the controller is further configured to control a heating parameter of the heating device according to the first power generation parameter.

[0016] In one embodiment, the device further comprises: a transformer; a power supply end of at least one of the first power generation unit and the second power generation unit is communicated with the heating device through the transformer.

[0017] The above-mentioned heating device includes: a first power generation unit, a second power generation unit and a heating device, wherein the first power generation unit is in a high back-pressure working condition, and the second power generation unit is in a low-pressure cylinder cutting-off working condition; an exhaust end of the first power generation unit is respectively communicated with a water inlet of the heating device and a water inlet end of the heating device, and a water outlet end of the heating device is respectively communicated with an exhaust end of the second power generation unit and a water outlet of the heating device; water enters the heating device through the water inlet of the heating device, steam generated during the power generation process of the first power generation unit flows into the heating device through the exhaust end of the first power generation unit, the water and the steam generated during the power generation process of the first power generation unit are heated in the heating device to form heated water, steam generated during the power generation process of the second power generation unit exchanges heat with the heated water through the exhaust end of the second power generation unit to form heating water, and the heating water flows out through the water outlet of the heating device.

[0018] Thus, in the context of a relatively low electricity price, to ensure the power generation revenue, the power generation load of the first power generation unit is relatively low. At this time, the steam discharged from the exhaust end of the first power generation unit is less, resulting in that the steam discharged from the exhaust end of the first power generation unit cannot heat the water inlet of the heating device to the temperature required for heating. Therefore, the heating device can heat the water that exchanges heat with the steam discharged from the exhaust end of the first power generation unit to ensure that the heated water can reach the temperature required for heating, and the steam discharged from the exhaust end of the second power generation unit can be introduced into the heated water, realizing the linkage among the first power generation unit, the heating device and the second power generation unit, and thus taking into account both the power generation revenue and the heating effect of the heating device. Description of the Drawings

[0019] Figure 1 It is a structural diagram of a heating device in one embodiment;

[0020] Figure 2The structural diagram of the heating equipment in a scenario where a pressure pump is further included in an embodiment;

[0021] Figure 3 The structural diagram of the heating equipment in a scenario where a first heat exchange device and a second heat exchange device are further included in an embodiment;

[0022] Figure 4 The structural diagram of the heating equipment in a scenario where a first water storage device is further included in an embodiment;

[0023] Figure 5 The structural diagram of the heating equipment in a scenario where a second water storage device is further included in an embodiment;

[0024] Figure 6 The structural diagram of the heating equipment in a scenario where the water outlet end of the heating device is communicated with the water outlet end of the first water storage device in an embodiment;

[0025] Figure 7 The structural diagram of the heating equipment in a scenario where a flow valve is further included in an embodiment;

[0026] Figure 8 The structural diagram of the heating equipment in a scenario where a transformer is further included in an embodiment;

[0027] Figure 9 The structural diagram of the heating equipment in a detailed embodiment. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] The heating equipment provided in the embodiment of the present application may have a structure as shown in Figure 1 . Among them, the heating equipment 10 includes: a first generator set 11, a second generator set 12, and a heating device 13. Among them, the first generator set 11 is in a high back pressure working condition, and the second generator set 12 is in a low pressure cylinder cut-off working condition; the exhaust end of the first generator set 11 is respectively communicated with the water inlet of the heating equipment 10 and the water inlet end of the heating device 13, and the water outlet end of the heating device 13 is respectively communicated with the exhaust end of the second generator set 12 and the water outlet of the heating equipment 10.

[0030] Among them, the influent water flows into the heating device 13 through the water inlet of the heating equipment 10. The steam generated during the power generation process of the first power generation unit 11 flows into the heating device 13 through the exhaust end of the first power generation unit 11. The influent water and the steam generated during the power generation process of the first power generation unit 11 are heated in the heating device 13 to form heated water. The steam generated during the power generation process of the second power generation unit 12 exchanges heat with the heated water through the exhaust end of the second power generation unit 12 to form heating water. The heating water flows out through the water outlet of the heating equipment 10.

[0031] Optionally, the first power generation unit 11 and the second power generation unit 12 can be steam turbines.

[0032] Optionally, the exhaust end of the first power generation unit 11 is at the exhaust end of the low-pressure cylinder of the first power generation unit 11; the exhaust end of the second power generation unit 12 is at the exhaust end of the medium-pressure cylinder of the second power generation unit 12.

[0033] Optionally, the water inlet and the water outlet of the heating equipment 10 can be connected to the heating system pipeline. The water heated by the heating equipment 10 is transported to the heat dissipation equipment at the user end (such as residential buildings, office buildings, factories, etc.) through the water outlet of the heating equipment 10 for heating or providing hot water; the low-temperature hot water after heat dissipation by the heat dissipation equipment at the user end can flow back to the water inlet of the heating equipment 10 through the heating system pipeline. Although the temperature of the low-temperature hot water after heat dissipation by the heat dissipation equipment at the user end has decreased, it still retains a certain amount of heat energy. Therefore, this part of the heat energy can be re-transported to the water inlet of the heating equipment 10 for the reuse of heat energy.

[0034] It can be understood that the heating device 13 shares the heating burden of the first power generation unit 11, that is, the power generation power of the first power generation unit 11 can be further reduced, and the heating device 13 can achieve stepless adjustment. Therefore, the heating equipment 10 can achieve stepless peak shaving adjustment.

[0035] In this embodiment, in the context of a relatively low electricity price, to ensure the power generation revenue, the power generation load of the first power generation unit 11 is relatively low. At this time, the steam discharged from the exhaust end of the first power generation unit 11 is less, resulting in the steam discharged from the exhaust end of the first power generation unit 11 being unable to heat the influent water of the heating equipment to the temperature required for heating. Therefore, the heating device 13 can heat the water that exchanges heat with the steam discharged from the exhaust end of the first power generation unit 11 to ensure that the heated water can reach the temperature required for heating. The steam discharged from the exhaust end 12 of the second power generation unit can be introduced into the heated water to realize the linkage among the first power generation unit 11, the heating device 13, and the second power generation unit 12, thereby taking into account both the power generation revenue and the heating effect of the heating equipment 10.

[0036] It can be understood that, as known from the above analysis, the exhaust end of the first generator set 11 is at the exhaust end of the low-pressure cylinder of the first generator set 11. Then, the pressure of the steam discharged from the exhaust end of the first generator set 11 is usually relatively low. Therefore, the pressure of the water mixed with the steam discharged from the exhaust end of the first generator set 11 when entering the water inlet of the heating device 10 is also relatively low, and it is easy to occur that the heating device 13 cannot heat the water mixed with the steam discharged from the exhaust end of the first generator set 11 when entering the water inlet of the heating device 10 to a relatively high temperature, resulting in a poor heating effect of the heating device 10.

[0037] As an embodiment, referring to Figure 2 , the heating device 10 further includes: a pressure pump 14, and the pressure pump 14 is arranged on the passage between the exhaust end of the first generator set 11 and the water inlet end of the heating device 13.

[0038] In this way, before the water mixed with the steam discharged from the exhaust end of the first generator set 11 when entering the water inlet of the heating device 10 enters the heating device 13, it is first boosted by the pressure pump 14, and then the boosted water enters the heating device 13. The heating device 13 can heat the boosted water to a suitable temperature required for heating. Therefore, the heating effect of the heating device 10 is ensured.

[0039] As an embodiment, referring to Figure 3 , the heating device 10 further includes: a first heat exchange device 15 and a second heat exchange device 16.

[0040] Among them, the exhaust end of the first generator set 11 is respectively communicated with the water inlet of the heating device 10 and the water inlet end of the heating device 13 through the first heat exchange device 15, and the heat exchange condensate in the first heat exchange device 15 returns to the boiler of the first generator set 11 through the drain port of the first heat exchange device 15.

[0041] Optionally, the first heat exchange device 15 can be a condenser, and the heat exchange condensate in the first heat exchange device 15 can be condensate water.

[0042] Optionally, the water in the first heat exchange device 15 exchanges heat with the steam discharged from the exhaust end of the first generator set 11 to form heat exchange water.

[0043] Among them, the water inlet flows into the first heat exchange device 15 through the water inlet of the heating device 10, the steam generated during the power generation process of the first generator set 11 flows into the first heat exchange device 15 through the exhaust end of the first generator set 11, the water inlet and the steam generated during the power generation process of the first generator set 11 exchange heat in the first heat exchange device 15 to form heat exchange water, and the heat exchange water flows into the heating device 13 through the water inlet end of the heating device 13, and the heat exchange water is heated in the heating device 13 to form heated water.

[0044] Optionally, the condensate water in the first heat exchange device 15 returns to the boiler of the first power generation unit 11 through the drain outlet of the first heat exchange device 15.

[0045] In this way, the heat of the steam discharged from the exhaust end of the first power generation unit 11 can be absorbed through the first heat exchange device 15 to form heat exchange water, enabling the first power generation unit to participate in the heating process of the heating device 10. The heat exchange condensate in the first heat exchange device 15 returns to the boiler of the first power generation unit 11 through the drain outlet of the first heat exchange device 15, realizing the reuse of the heat exchange condensate in the first heat exchange device 15.

[0046] Wherein, the exhaust end of the second power generation unit 12 is respectively communicated with the water outlet end of the heating device 13 and the water outlet of the heating device 10 through the second heat exchange device 16, and the heat exchange water in the second heat exchange device 16 returns to the boiler of the second power generation unit 12 through the drain outlet of the second heat exchange device 16.

[0047] Optionally, the heat exchange condensate in the second heat exchange device 16 can be condensate water.

[0048] Optionally, the steam generated during the power generation process of the second power generation unit 12 can flow into the second heat exchange device 16 through the exhaust end of the second power generation unit 12, and the heating water flows into the second heat exchange device 16 from the outlet end of the heating device 13. The heating water and the steam generated during the power generation process of the second power generation unit 12 exchange heat in the second heat exchange device 16 to form heating water, and the heating water flows to the heating system pipeline through the water outlet of the heating device 10.

[0049] It can be understood that when the second power generation unit 12 is in the low-pressure cylinder cut-off condition, only a very small amount of cooling steam in the second power generation unit 12 continues to expand and do work in the low-pressure cylinder, and finally is converted into exhaust steam. The heat loss when the exhaust steam is discharged to the atmosphere is the cold-end loss of the second power generation unit 12, which is extremely small and can be ignored.

[0050] In this way, the steam generated during the power generation process of the second power generation unit 12 can be absorbed through the heating water in the second heat exchange device 16, reducing the cold-end loss of the second power generation unit 12. The heat exchange condensate in the second heat exchange device 16 returns to the boiler of the second power generation unit 12 through the drain outlet of the second heat exchange device 16, realizing the reuse of the heat exchange condensate in the second heat exchange device 16.

[0051] As an embodiment, referring to Figure 4 , the heating device 10 further includes: a first water storage device 17; the water inlet of the first water storage device 17 is communicated with the water outlet end of the first heat exchange device 15, and the water outlet of the first water storage device 17 is communicated with the water inlet end of the second heat exchange device 16.

[0052] Optionally, the material of the first water storage device 17 is heat-insulating and pressure-bearing material.

[0053] It can be understood that since the first water storage device 17 is arranged between the first heat exchange device 15 and the second heat exchange device 16, and the heated water flowing out of the heating device 13 may be high-temperature and high-pressure water, therefore, the material of the first water storage device 17 needs to be heat-insulating and pressure-bearing material, so as to ensure that the first water storage device 17 has the functions of heat insulation and pressure bearing, and to ensure the normal use of the first water storage device 17.

[0054] In this way, since the first water storage device 17 is arranged in the water treatment path of the heating device 10 (the path between the first heat exchange device 15 and the second heat exchange device 16), when the heating device 10 is in the heating low valley period, the heating output demand is low, and there will be excess high-temperature and high-pressure water stored in the first water storage device 17. When the heating device 10 is in the heating peak period, the heating output demand is high, and the excess high-temperature and high-pressure water in the first water storage device 17 can first flow into the second heat exchange device 16 through the water outlet of the first water storage device 17, so as to improve the heating effect of the heating device 10.

[0055] As an embodiment, referring to Figure 5 , the heating device 10 further includes: a second water storage device 18; the communication ports of the second water storage device 18 are respectively communicated with the water outlet end of the first heat exchange device 15 and the water inlet end of the heating device 13. When the heating device 10 is at the power supply peak period, the communication ports of the second water storage device 18 are in the water storage state. When the heating device 10 is at the power supply low valley period, the communication ports of the second water storage device 18 are in the water outlet state.

[0056] Optionally, the material of the second water storage device 18 is heat-insulating material.

[0057] Optionally, the second water storage device 18 may only include one communication port, and the communication port of the second water storage device 18 may also include a water inlet and a water outlet, which are not limited here.

[0058] As an embodiment, when the heating device 10 is at the power supply peak period, the water inlet is opened, and at this time, the communication ports of the second water storage device 18 are in the water storage state. When the heating device 10 is at the power supply low valley period, the water outlet is opened, and at this time, the communication ports of the second water storage device 18 are in the water outlet state.

[0059] Thus, when the heating device 10 is at the peak power supply period, part of the heat exchange water in the first heat exchange device 15 flows into the second water storage device 18, and the second water storage device 18 can store part of the low-temperature heat exchange water. When the heating device 10 is at the low power supply period, the heat exchange water in the second water storage device 18 can flow into the pressure pump 14 and be boosted in the pressure pump 14 to form boosted water. The boosted water flows into the heating device 13 and is heated in the heating device 13 to form heated water. Therefore, part of the heating pressure of the first generator set 11 can be shared by the second water storage device 18. Then, the power generation power of the first generator set 11 can be further reduced, thereby ensuring the power generation income of the heating device 10.

[0060] As an embodiment, referring to Figure 6 , the water outlet end of the first heat exchange device 15 is communicated with the water outlet of the first water storage device 17.

[0061] Thus, considering that when the heating device 10 is at the low power supply period, even if the power generation power of the first generator set 11 is low, the heat exchange water flowing out of the first heat exchange device 15 may be able to meet the heating output demand, or the gap with the heating output demand may not be so large. Then, part of the heat exchange water can be directly confluent with the water flowing out of the first water storage device 17 without being heated by the heating device 13 and flow to the second heat exchange device 16, so as to ensure the reasonable use of the heating device 13.

[0062] As an embodiment, referring to Figure 7 , the heating device 10 further includes a flow valve 19 for adjusting the flow rate of at least one of the first passage and the second passage. The first passage is the passage between the water outlet end of the first heat exchange device 15 and the water inlet end of the heating device 13, and the second passage is the passage between the water outlet end of the first heat exchange device 15 and the water outlet of the first water storage device 17.

[0063] Optionally, the flow valve 19 may include a multi-way valve or a plurality of one-way valves.

[0064] As an embodiment, when the flow valve 19 is a multi-way valve, the inlet end of the multi-way valve is communicated with the water outlet end of the first heat exchange device 15. The first valve in the multi-way valve is respectively communicated with the inlet end of the multi-way valve and the water inlet end of the heating device 13. The second valve in the multi-way valve is respectively communicated with the inlet end of the multi-way valve and the water outlet of the first water storage device 17. The valve opening of the first valve determines the flow rate of the first passage, and the valve opening of the second valve determines the flow rate of the second passage.

[0065] As another embodiment, in the case where the flow valve 19 includes a plurality of one-way valves, the first one-way valve is disposed on the first passage, the second one-way valve is disposed on the second passage, the valve opening of the first one-way valve determines the flow rate of the first passage, and the valve opening of the second one-way valve determines the flow rate of the second passage.

[0066] Optionally, the higher the heating output demand corresponding to the heating device 10, the higher the flow rate of the first passage; the lower the heating output demand corresponding to the heating device 10, the higher the flow rate of the second passage.

[0067] In this way, the higher the heating output demand corresponding to the heating device 10, the higher the flow rate of the first passage, which allows more water to flow to the heating device 13. That is, the temperature of the water finally flowing to the second heat exchange device 16 is higher. Furthermore, the temperature of the heating water output by the heating device 10 is higher; the lower the heating output demand corresponding to the heating device 10, the higher the flow rate of the second passage. More water directly flows to the second heat exchange device 16 without passing through the heating device 13, making the temperature of the water in the second heat exchange device 16 match the heating output demand, thereby saving unnecessary energy loss.

[0068] Optionally, the flow valve 19 can also be used to adjust the flow rate of the third passage. The third passage is the passage between the water outlet end of the first heat exchange device 15 and the communication port of the second water storage device 18.

[0069] As an embodiment, in the case where the flow valve 19 is a multi-way valve, the inlet end in the multi-way valve is communicated with the water outlet end of the first heat exchange device 15. The first valve in the multi-way valve is respectively communicated with the inlet end in the multi-way valve and the water inlet end of the heating device 13. The second valve in the multi-way valve is respectively communicated with the inlet end in the multi-way valve and the water outlet of the first water storage device 17. The third valve in the multi-way valve is respectively communicated with the inlet end in the multi-way valve and the communication port of the second water storage device 18; the valve opening of the first valve determines the flow rate of the first passage, the valve opening of the second valve determines the flow rate of the second passage, and the valve opening of the third valve determines the flow rate of the third passage.

[0070] As another embodiment, in the case where the flow valve 19 includes a plurality of one-way valves, the first one-way valve is disposed on the first passage, the second one-way valve is disposed on the second passage, and the third one-way valve is disposed on the third passage; the valve opening of the first one-way valve determines the flow rate of the first passage, the valve opening of the second one-way valve determines the flow rate of the second passage, and the valve opening of the third one-way valve determines the flow rate of the third passage.

[0071] Optionally, when the heating device 10 has a high-load heating output demand, when the power grid power demand is higher and the water storage flow rate in the second water storage device 18 is lower than the preset flow rate threshold, the flow rate of the third passage is higher.

[0072] Thus, when there is a high-load heating output demand corresponding to the heating device 10, that is, when the first power generation unit 11 generates a relatively large amount of electricity itself, there may be more waste heat. Coupled with the fact that the water storage flow rate in the second water storage device 18 is lower than the preset flow rate threshold, that is, when the water storage flow rate in the second water storage device 18 is low, the higher the flow rate of the third passage, it can ensure that the second water storage device 18 stores water during the power supply peak period of the heating device 10, and thus it can ensure that the second water storage device 18 has stored water for the power supply low period of the heating device 10.

[0073] As an embodiment, the heating device 10 further includes: a controller; the controller is communicatively connected to the first power generation unit 11, the second power generation unit 12, and the heating device 13 respectively. The controller is used to control the first power generation parameter of the first power generation unit 11 and the second power generation parameter of the second power generation unit 12 according to the heating output demand corresponding to the heating device 10, and the controller is further used to control the heating parameter of the heating device 13 according to the first power generation parameter.

[0074] Optionally, when there is a high-load heating output demand corresponding to the heating device 10, that is, during the peak period of the power grid power demand, the higher the power generation power characterized by the first power generation parameter, the higher the power generation power characterized by the second power generation parameter, and the lower the power of the heating device 13.

[0075] Optionally, in the case where the power generation power characterized by the first power generation parameter does not match the heating output demand, the lower the matching degree between the power generation power characterized by the first power generation parameter and the heating output demand, the higher the heating power characterized by the heating parameter.

[0076] Optionally, the controller can also control the second power generation unit 12 to switch from the low-pressure cylinder cutting cylinder operating condition to the full condensation highest power generation load operating condition.

[0077] Thus, by switching the operating condition of the second power generation unit 12 from the low-pressure cylinder cutting cylinder operating condition to the full condensation highest power generation load operating condition, it is possible to further increase the power generation load of the heating device 10 while meeting the high-load heating effect, and achieve more peak benefits.

[0078] It can be understood that since the first power generation unit 11 has no cold end loss, and its power generation load is relatively high itself, and in addition, the heat exchange water that exchanges heat with the steam generated during the power generation process of the first power generation unit 11 can be heated by the heating device 13, the reduction amount of the power generation power characterized by the first power generation parameter can be higher than the reduction amount of the power generation power characterized by the second power generation parameter.

[0079] It can be understood that although the heating device 13 can achieve stepless adjustment, the adjustment ability of the heating device 13 is still limited by the power supply condition of the heating device 13.

[0080] As an embodiment, referring to Figure 8 , the heating device 10 further includes: a transformer 20; a power supply end of at least one of the first generator set 11 and the second generator set 12 is connected to the heating device 13 through the transformer 20.

[0081] Specifically, an air supply end of a low-pressure cylinder of at least one of the first generator set 11 and the second generator set 12 is connected to the power generation device, and steam generated by at least one of the first generator set 11 and the second generator set 12 during power generation flows into the power generation device through the air supply end of the low-pressure cylinder. The power generation device converts the steam generated by at least one of the first generator set 11 and the second generator set 12 during power generation into electric energy, and the electric energy is transmitted to the power transmission end of the heating device 13 through the power supply end.

[0082] In this way, at least one of the first generator set 11 and the second generator set 12 can supply power to the heating device 13 through the transformer 20, increasing the maximum adjustable power of the heating device 13, and thus improving the peak shaving capacity of the heating device 10.

[0083] As a detailed embodiment, referring to Figure 9 , an exhaust end of the first generator set 11 is connected to an inlet end of the first heat exchange device 15, a water inlet end of the first heat exchange device 15 is connected to a water inlet of the heating device 10, a water drainage end of the first heat exchange device 15 is connected to the first generator set 11, a water outlet end of the first heat exchange device 15 is connected to an inlet of the heating device 13 through a pressure pump 14, an outlet of the heating device 13 is connected to an inlet of the first water storage device 17, a connection port of the water outlet end of the first heat exchange device 15 and the second water storage device 18 is connected, a water outlet end of the first heat exchange device 15 is connected to an outlet of the first water storage device 17, an outlet of the first water storage device 17 is connected to an inlet of the second heat exchange device 16, an exhaust end of the second generator set 12 is connected to an inlet of the second heat exchange device 16, an outlet of the second heat exchange device 16 is connected to an outlet of the heating device 10, a water drainage end of the second heat exchange device 16 is connected to the second generator set 12, and power supply ends of the first generator set 11 and the second generator set 12 are connected to a power transmission end of the heating device 13 through the transformer 20.

[0084] Thus, the influent water flows into the first heat exchange device 15 through the water inlet of the heating device 10. The steam generated during the power generation process of the first generator set 11 flows into the first heat exchange device 15 through the exhaust end of the first generator set 11. The influent water and the steam generated during the power generation process of the first generator set 11 exchange heat in the first heat exchange device 15 to form heat-exchanged water. The condensed water in the first heat exchange device 15 returns to the first generator set 11 through the drain port of the first heat exchange device 15. A part of the heat-exchanged water flows into the second water storage device 18 through the communication port of the second water storage device 18. A part of the heat-exchanged water flows into the pressure pump 14. Another part of the heat-exchanged water converges with the water discharged from the second water storage device 18. The water stored in the second water storage device 18 flows into the pressure pump 14 through the communication port of the second water storage device 18. The heat-exchanged water is pressurized in the pressure pump 14 to form pressurized water. The pressurized water flows into the heating device 13 through the water inlet of the heating device 13. The pressurized water is heated in the heating device 13 to form heated water. The heated water is mixed with another part of the heat-exchanged water through the first water storage device 17 to form mixed water. The mixed water flows into the second heat exchange device 16 through the water inlet end of the second heat exchange device 16. The steam generated during the power generation process of the second generator set 12 flows into the second heat exchange device 16 through the inlet end of the second heat exchange device 16. The mixed water and the steam generated during the power generation process of the second generator set 12 exchange heat in the second heat exchange device 16 to form heating water. The heating water flows to the water outlet of the heating device 10 through the outlet end of the second heat exchange device 16. The heat-exchanged water in the second heat exchange device 16 returns to the second generator set 12 through the drain port of the second heat exchange device 16.

[0085] Furthermore, when the heating device 10 is in the low power supply period, the heat-exchanged water stored in the second water storage device 18 converges with a part of the heat-exchanged water flowing out of the first heat exchange device 15 through the communication port of the second water storage device 18 and flows into the pressure pump 14. The first water storage device 17 stores part of the heated water. When the heating device 10 is in the high power supply period, a part of the heat-exchanged water flowing out of the first heat exchange device 15 flows into the second water storage device 18 through the communication port of the second water storage device 18 for storage in the second water storage device 18. The heated water stored in the first water storage device 17 flows to the second heat exchange device 16.

[0086] It should be understood that although the steps in the flowcharts involved in the above embodiments are shown in sequence according to the indications of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, there is no strict order limit for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0087] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0088] The above embodiments only express several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A heating device, characterized in that, The device includes: a first power generation unit, a second power generation unit, and a heating device. Among them, the first power generation unit is in a high back-pressure condition, and the second power generation unit is in a condition of bypassing the low-pressure cylinder; The exhaust end of the first power generation unit is respectively connected to the water inlet of the heating equipment and the water inlet end of the heating device. The water outlet end of the heating device is respectively connected to the exhaust end of the second power generation unit and the water outlet of the heating equipment; The water enters the heating device through the water inlet of the heating equipment. The steam generated during the power generation process of the first power generation unit flows into the heating device through the exhaust end of the first power generation unit. The water and the steam generated during the power generation process of the first power generation unit are heated in the heating device to form heated water. The steam generated during the power generation process of the second power generation unit exchanges heat with the heated water through the exhaust end of the second power generation unit to form heating water, and the heating water flows out through the water outlet of the heating equipment.

2. The device according to claim 1, wherein, The device further includes: a pressure pump, and the pressure pump is arranged on the path between the exhaust end of the first power generation unit and the water inlet end of the heating device.

3. The device according to claim 1, characterized in that, The device further includes: a first heat exchange device; the exhaust end of the first power generation unit is respectively connected to the water inlet of the heating equipment and the water inlet end of the heating device through the first heat exchange device; The water enters the first heat exchange device through the water inlet of the heating equipment. The steam generated during the power generation process of the first power generation unit flows into the first heat exchange device through the exhaust end of the first power generation unit. The water and the steam generated during the power generation process of the first power generation unit exchange heat in the first heat exchange device to form heat-exchanged water. The heat-exchanged water flows into the heating device through the water inlet end of the heating device, and the heat-exchanged water is heated in the heating device to form heated water; The heat-exchanged condensate in the first heat exchange device returns to the boiler of the first power generation unit through the drain outlet of the first heat exchange device.

4. The device according to claim 3, characterized in that The device further includes: a second heat exchange device; the exhaust end of the second power generation unit is respectively connected to the water outlet end of the heating device and the water outlet of the heating equipment through the second heat exchange device; The steam generated during the power generation process of the second power generation unit exchanges heat with the heated water in the second heat exchange device to form heating water; The heat-exchanged condensate in the second heat exchange device returns to the boiler of the second power generation unit through the drain outlet of the second heat exchange device.

5. The device according to claim 4, characterized in that, The device further includes: a first water storage device; the water inlet of the first water storage device is connected to the water outlet end of the first heat exchange device, and the water outlet of the first water storage device is connected to the water inlet end of the second heat exchange device.

6. The device according to claim 5, characterized in that, The device further includes: a second water storage device; communication ports of the second water storage device are respectively communicated with a water outlet end of the first heat exchange device and a water inlet end of the heating device. When the heating device is in a peak power supply period, the communication ports of the second water storage device are in a water storage state. When the heating device is in a low power supply period, the communication ports of the second water storage device are in a water outlet state.

7. The device according to claim 5, characterized in that, The water outlet end of the first heat exchange device is communicated with a water outlet of the first water storage device.

8. The device according to claim 7, characterized in that, The device further includes a flow valve, which is used to adjust the flow rate of at least one of a first path and a second path. The first path is a path between the water outlet end of the first heat exchange device and the water inlet end of the heating device, and the second path is a path between the water outlet end of the first heat exchange device and the water outlet of the first water storage device.

9. The device according to claim 1, characterized in that, The device further includes: a controller; the controller is respectively communicatively connected with the first power generation unit, the second power generation unit and the heating device. The controller is used to control a first power generation parameter of the first power generation unit and a second power generation parameter of the second power generation unit according to a heating output demand corresponding to the heating device, and the controller is further used to control a heating parameter of the heating device according to the first power generation parameter.

10. The device according to any one of claims 1 to 9, characterized in that, The device further includes: a transformer; a power supply end of at least one of the first power generation unit and the second power generation unit is communicated with the heating device through the transformer.

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