Heat supply system with interconnected and intercommunicated heat source and heat supply pipe network

Abstract

The utility model provides a heat supply system with a heat source and a heat supply pipe network interconnected and intercommunicated. The heat supply system comprises a standby boiler room heat supply unit, a municipal heat supply unit, a connecting box, a water return box and a heating station. The standby boiler room heat supply unit is provided with a plurality of circulating pipelines, and each circulating pipeline comprises a water inlet pipe and a water outlet pipe; the municipal heat supply unit is provided with a plurality of water circulation pipelines, each water circulation pipeline comprises a heat supply pipe and a water return pipe, a plurality of heat supply three-way pipes are arranged in the connecting box, and the heat supply three-way pipes are connected to the intersections of the corresponding water outlet pipes and the heat supply pipes. According to the heat supply system with the heat source and the heat supply pipe network interconnected and intercommunicated, the heat supply three-way pipe and the water return three-way pipe are provided, and the connection mode between the pipe network of the municipal heat supply unit and the pipe network of the standby boiler room heat supply unit is changed into split connection; only the heat supply three-way pipe or the water return three-way pipe needs to be replaced for maintenance, and the maintenance difficulty is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating, and in particular relates to a heating system in which a heat source and a heating pipe network are interconnected. Background Art

[0002] In recent years, the intensity of air pollution control has been intensified, coal-free heating has been advocated, and in the past two years, there have been power and gas restrictions, which have led to a reduction in the heat output of gas-fired thermal power centers in urban areas, and unstable municipal heating network conditions, affecting the normal heating of residents. At the same time, regional independent heat sources generally have backup boiler equipment, which needs long-term maintenance even if it is out of service for a long time, increasing maintenance costs.

[0003] The existing solution is to add a pipeline between the municipal pipeline network and the backup boiler room, so as to use the backup boiler room to compensate for the heating of the municipal pipeline network, so as to ensure the stability of the heating supply of the municipal pipeline network. The existing connection method is to directly drill holes in the municipal pipeline network and then connect the pipelines by welding. The welding parts of the pipelines are prone to cracks after long-term use, resulting in the loss of heating medium and affecting the heating effect. Repairs can only be performed by welding on the original basis, which has high repair costs. In addition, when a single pipeline is damaged, the corresponding circulation pipeline needs to be stopped as a whole, affecting the heating efficiency. Utility Model Content

[0004] The embodiment of the utility model provides a heating system in which a heat source and a heating pipe network are interconnected, aiming to solve the technical problems in the prior art that repair is difficult after problems occur in the pipe welding method, and that repair of a single pipe affects the heating efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provided is a heating system in which a heat source and a heating pipe network are interconnected, comprising a standby boiler room heating unit, a municipal heating unit, a connection box, a return water tank and a heating station, wherein the heating station is used to supply heat to a user area;

[0007] The standby boiler room heating unit has a plurality of circulation pipelines, each of which includes a water inlet pipe and a water outlet pipe, and the municipal heating unit has a plurality of water circulation pipelines, each of which includes a heating pipe and a return pipe, the water inlet pipe corresponds to the return pipe one-to-one, and the water outlet pipe corresponds to the heating pipe one-to-one; the heating pipe is connected between the municipal heating unit and the thermal power station, and the return pipe is connected between the municipal heating unit and the thermal power station to form a water circulation between the municipal heating unit and the thermal power station; the water outlet pipe is connected between the heating pipe and the standby boiler room heating unit, and the water inlet pipe is connected between the return pipe and the standby boiler room unit;

[0008] A plurality of heating tees are provided in the connection box, and the heating tees are connected to the intersection of the corresponding water outlet pipe and the heating pipe, and a first connecting pipe is provided between two adjacent heating tees;

[0009] A plurality of water return tees are arranged in the water return tank, and the water return tees are connected to the intersection of the corresponding water inlet pipe and the water return pipe, and a second connecting pipe is arranged between two adjacent water return tees.

[0010] In a possible implementation, the connection box is disposed between the municipal heating unit and the thermal power station.

[0011] In a possible implementation, the return water tank is disposed between the municipal heating unit and the thermal power station.

[0012] In a possible implementation manner, each of the first connecting pipes is provided with a control valve.

[0013] In a possible implementation manner, each of the second connecting pipes is provided with a switch valve.

[0014] In a possible implementation, the heat supply system in which the heat source is interconnected with the heat supply network further includes a heat storage unit, which is a heat storage box. The heat storage box is arranged between the connection box and the thermal power station. The inner cavity of the heat storage box is provided with a partition plate arranged in a horizontal direction, and the partition plate divides the inner cavity of the heat storage box into a heat storage cavity and a heating cavity. The heat storage cavity is located above the heating cavity, and the heat storage cavity is respectively connected to a plurality of the heating tees and the thermal power station, and a heating device is arranged in the heating cavity.

[0015] In a possible implementation, the heating device is a boiler heating device.

[0016] In a possible implementation, the heating device is a photovoltaic heating device.

[0017] In a possible implementation, the connection box also includes a shell, the shell forms a water storage chamber, a support frame is provided in the water storage chamber, a plurality of the heating tee pipes are arranged on the support frame from top to bottom, the three openings of the heating tee pipes respectively pass through the water storage chamber, and a heat exchange medium is provided in the water storage chamber.

[0018] In a possible implementation, the standby boiler room heating unit further comprises a first heating pipe and a first water return pipe, and the first heating pipe and the first water return pipe are respectively connected to a separate network thermal power station.

[0019] The utility model discloses a heating system in which a heat source and a heating pipe network are interconnected, and compared with the prior art, a heating tee and a return tee are provided, and the connection mode between the pipe network of the municipal heating unit and the pipe network of the heating unit in the standby boiler room is changed to a split connection, which replaces the traditional welding connection mode, and there will be no problem of weld lines on the weld seam. For maintenance of the utility model, only the heating tee or the return tee needs to be replaced, and the maintenance difficulty is low; adjacent heating tees are interconnected, and adjacent return tees are interconnected, so that when one of the pipes is damaged, the original water circulation can be guided to the normally working pipe through the first connecting pipe or the second connecting pipe, thereby improving the assistance effect of the adjacent pipes, reducing the maintenance loss, and ensuring the stability of heating; the arrangement of the connecting box and the return water box can assist the connection between the pipes, and at the same time protect the pipes, and prevent the heating tee and the return water tee from being damaged by external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the structure of a heating system in which a heat source and a heating pipe network are interconnected according to the first embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of the connection box used in the first embodiment of the present utility model;

[0023] Figure 3 for Figure 2 Schematic diagram of the middle AA section;

[0024] Figure 4 This is a schematic diagram of the structure of the heating tee pipe and the water inlet pipe used in the first embodiment of the utility model;

[0025] Figure 5 This is a cross-sectional view of the return water tank used in the first embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the connection between the heat storage tank and the thermal power station used in the second embodiment of the present utility model;

[0027] Figure 7 This is a cross-sectional view of the heat storage box used in the second embodiment of the present utility model;

[0028] Figure 8 This is a cross-sectional view of the connection box used in the third embodiment of the present utility model.

[0029] Description of reference numerals:

[0030] 1. Standby boiler room heating unit; 11. Water inlet pipe; 12. Water outlet pipe; 13. First heating pipe; 14. First return pipe;

[0031] 2. Municipal heating unit; 21. Heating pipe; 22. Return pipe;

[0032] 3. Connection box; 31. Heating tee pipe; 32. First connecting pipe; 33. Control valve; 34. Shell; 35. Support frame; 36. Heat exchange medium; 37. Water supply pipe;

[0033] 4. Return water tank; 41. Return water tee pipe; 42. Second connecting pipe; 34. Switch valve;

[0034] 5. Heating station;

[0035] 6. heat storage box; 61. partition plate; 62. heat storage chamber; 63. heating chamber; 64. heating equipment;

[0036] 7. Bidirectional heat metering device. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] It should be noted that the terms "length", "width", "height", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0041] Please also read Figures 1 to 8 , the heating system provided by the utility model with the heat source and the heating network interconnected is now described. It includes a standby boiler room heating unit 1, a municipal heating unit 2, a connection box 3, a return water tank 4 and a thermal power station 5, and the thermal power station 5 is used to supply heat to the user area; the standby boiler room heating unit 1 has a plurality of circulation pipelines, each of which includes a water inlet pipe 11 and a water outlet pipe 12, and the municipal heating unit 2 has a plurality of water circulation pipelines, each of which includes a heating pipe 21 and a return water pipe 22, the water inlet pipe 11 and the return water pipe 22 correspond one to one, and the water outlet pipe 12 and the heating pipe 21 correspond one to one; the heating pipe 21 is connected between the municipal heating unit 2 and the thermal power station 5, and the return water pipe 22 is connected between the municipal heating unit 2 and the thermal power station 5 , so as to form a water circulation between the municipal heating unit 2 and the thermal power station 5; the outlet pipe 12 is connected between the heating pipe 21 and the standby boiler room heating unit 1, and the inlet pipe 11 is connected between the return pipe 22 and the standby boiler room unit 1; a plurality of heating tees 31 are arranged in the connection box 3, and the heating tees 31 are connected to the intersection of the corresponding outlet pipe 12 and the heating pipe 21, and a first connecting pipe 32 is arranged between two adjacent heating tees 31; a plurality of return water tees 41 are arranged in the return water box 4, and the return water tees 41 are connected to the intersection of the corresponding inlet pipe 11 and the return water pipe 22, and a second connecting pipe 42 is arranged between two adjacent return water tees 41.

[0042] It should be noted that the standby boiler room heating unit 1 completes the water circulation through the pipe network when supplying heat, and the municipal heating unit 2 uses the pipe network to supply heat when supplying heat to form a hot water circulation.

[0043] It should be noted that the standby boiler room heating unit 1 has a boiler, and the boiler is equipped with a boiler burner.

[0044] It should be noted that the return pipe 22 and the inlet pipe 11 are respectively provided with circulation pumps.

[0045] During specific implementation, valves are respectively provided on the water inlet pipe and the water outlet pipe of the thermal power station 5. When it is necessary to transfer heat energy from the municipal heating unit 2 to the standby boiler room heating unit 1, the valve is closed to allow hot water to flow from the water outlet pipe 12 along the heating pipe 21 to the standby boiler room unit 1, and the water flows out from the water inlet pipe 11 and flows along the return pipe 22 to the municipal heating unit 1 to complete the water circulation.

[0046] It should be noted that a bidirectional heat metering device 7 is also provided on the return pipe 22, which can realize the networked operation of multiple heat sources with metering to fully tap the supply of low-cost heat sources and reduce the consumption of high-cost energy. The bidirectional heat metering component includes a dual-flow heat metering ultrasonic flowmeter, which can automatically determine the flow direction and measure the accumulated flow.

[0047] During specific implementation, a heat preservation layer is provided in the connection box 3 .

[0048] In specific implementation, circulation pumps are respectively provided between the energy supply pipeline 70 , the branch pipeline 8 , the first auxiliary heating unit 2 and the standby boiler room heating unit 1 , and between the second auxiliary heating unit 5 and the first energy storage unit 3 .

[0049] The heating system provided in the present embodiment, in which the heat source and the heating pipe network are interconnected, provides a heating tee 31 and a return water tee 41, compared with the prior art, and changes the connection mode between the pipe network of the municipal heating unit 2 and the pipe network of the standby boiler room heating unit 1 into a split connection, replacing the traditional welding connection mode, and there will be no problem of weld lines on the weld seam. The maintenance of the present application only needs to replace the heating tee 31 or the return water tee 41, and the maintenance difficulty is low; the adjacent heating tees 31 are interconnected, and the adjacent return water tees 41 are interconnected. When one of the pipes is damaged, the original water circulation can be guided to the normally working pipe through the first connecting pipe 32 or the second connecting pipe 42, thereby improving the assistance effect of the adjacent pipes, reducing the maintenance loss, and ensuring the stability of heating; the setting of the connecting box 3 and the return water box 4 can assist the connection between the pipes, and at the same time protect the pipes to prevent the heating tee 31 and the return water tee 41 from being damaged by external forces.

[0050] In some embodiments, see Figure 1 The connection box 3 is arranged between the municipal heating unit 2 and the thermal power station 5. The connection box 3 shortens the distance from the heat source to the thermal power station 5, and the heat energy is transported quickly, which can improve the temperature adjustment efficiency and ensure the timeliness of temperature adjustment.

[0051] In some embodiments, see Figure 1 The return water tank 4 is arranged between the municipal heating unit 2 and the thermal power station 5. The return water tank 4 is arranged between the two, which shortens the return water distance, improves the water circulation speed, and can save the use cost at the same time.

[0052] In some embodiments, see Figure 2 and Figure 3 Each first connecting pipe 32 is provided with a control valve 33. The control valve 33 can control the switch state of the first connecting pipe 32 to change the flow path of the water flow.

[0053] During specific implementation, a control platform is provided on the connection box 3, and the control platform is respectively connected to communicate with a plurality of control valves 33, and makes corresponding control strategies according to the instructions of the staff.

[0054] In some embodiments, see Figure 5 Each second connecting pipe 42 is provided with a switch valve 34. The switch valve 34 can control the switch state of the second connecting pipe 42 to control the connection or isolation of two adjacent water circulation paths.

[0055] In some embodiments, see Figure 6 and Figure 7 The heat supply system in which the heat source and the heat supply pipe 21 network are interconnected also includes a heat storage unit, which is a heat storage tank 6. The heat storage tank 6 is arranged between the connection box 3 and the heat power station 5. The inner cavity of the heat storage tank 6 is provided with a partition plate 61 arranged in the horizontal direction. The partition plate 61 divides the inner cavity of the heat storage tank 6 into a heat storage chamber 62 and a heating chamber 63. The heat storage chamber 62 is located above the heating chamber 63. The heat storage chamber 62 is connected to a plurality of heating tees 31 and the heat power station 5 respectively. A heating device 64 is arranged in the heating chamber 63. The heat storage tank 6 can mix the hot water flowing from the plurality of heating tees 31 respectively. After the water in the plurality of water circulation paths is mixed, it is passed into the heat power station 5 to ensure that the temperature of the hot water passed into the heat power station 5 is the same, thereby improving the stability of the heat supply of the heat power station 5. The heating device 64 can heat the heat storage chamber 62 when the water temperature is lower than the preset water temperature to ensure the heating effect.

[0056] In some embodiments, the heating device 64 is a boiler heating device, which includes a boiler and a boiler burner. The boiler burner heats the boiler, and the inner cavity of the boiler forms a heat storage cavity 62 .

[0057] In some embodiments, the heating device 64 is a photovoltaic heating device. The photovoltaic heating device includes a solar thermal accumulator and a heat storage device. The inner cavity of the heat storage device forms a heating cavity 63 that can use solar energy to store heat, thereby improving energy utilization efficiency. The solar energy heats the heat storage device. When the temperature in the heat storage cavity 62 is lower than the preset temperature, the hot water in the heat storage device and the water in the heat storage cavity 62 can be heat-exchanged to increase the heating temperature.

[0058] In some embodiments, see Figure 8 The connection box 3 further includes a shell 34, which forms a water storage cavity. A support frame 35 is provided in the water storage cavity. A plurality of heating tees 31 are provided on the support frame 35 from top to bottom. The three openings of the heating tees 31 respectively pass through the water storage cavity. A heat exchange medium 36 is provided in the water storage cavity. In this embodiment, the heat exchange medium can exchange heat with the hot water in the plurality of heating tees 31 respectively, so as to achieve heat balance of the hot water in all the heating tees 31, so that the water temperatures input into the thermal power station 5 by the plurality of heating tees 31 are the same, thereby improving the stability of heating.

[0059] It should be noted that, in this embodiment, a waterproof shell is provided on the outer periphery of the first connecting pipe 32 to protect the control valve 33 .

[0060] Optionally, the heat exchange medium 36 is water.

[0061] It should be noted that, in this embodiment, the water storage chamber is connected to a water supply pipe 37 .

[0062] In some embodiments, see Figure 1 The standby boiler room heating unit 1 also has a first heating pipe 13 and a first return pipe 14, which are respectively connected to the independent network heating station. The first heating pipe 31 and the first return pipe 32 are connected to the independent network heating station to retain the original function of the standby boiler room heating unit 1. After the boiler room of the independent network is damaged, the standby boiler room heating unit 1 supplies heat to the users on the independent network side to ensure the heating stability on the independent network side. The two-way heating pipe 81 and the two-way return pipe 82 enable the municipal heating unit 4 to supply heat to the independent network heating unit, increasing the flexibility of use.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating system in which a heat source and a heating pipe network are interconnected, characterized in that: It includes a standby boiler room heating unit, a municipal heating unit, a connection box, a return water tank and a thermal power station, and the thermal power station is used to supply heat to the user area; The standby boiler room heating unit has a plurality of circulation pipelines, each of which includes a water inlet pipe and a water outlet pipe, and the municipal heating unit has a plurality of water circulation pipelines, each of which includes a heating pipe and a return pipe, the water inlet pipe corresponds to the return pipe one-to-one, and the water outlet pipe corresponds to the heating pipe one-to-one; the heating pipe is connected between the municipal heating unit and the thermal power station, and the return pipe is connected between the municipal heating unit and the thermal power station to form a water circulation between the municipal heating unit and the thermal power station; the water outlet pipe is connected between the heating pipe and the standby boiler room heating unit, and the water inlet pipe is connected between the return pipe and the standby boiler room unit; A plurality of heating tees are provided in the connection box, and the heating tees are connected to the intersection of the corresponding water outlet pipe and the heating pipe, and a first connecting pipe is provided between two adjacent heating tees; A plurality of water return tees are arranged in the water return tank, and the water return tees are connected to the intersection of the corresponding water inlet pipe and the water return pipe, and a second connecting pipe is arranged between two adjacent water return tees.

2. The heating system with interconnected heat source and heating pipe network as claimed in claim 1, characterized in that: The connection box is arranged between the municipal heating unit and the thermal power station.

3. The heating system with interconnected heat source and heating pipe network as claimed in claim 1, characterized in that: The return water tank is arranged between the municipal heating unit and the thermal power station.

4. The heat supply system with interconnected heat source and heat supply network as claimed in claim 1, characterized in that: Each of the first connecting pipes is provided with a control valve.

5. The heating system with interconnected heat source and heating pipe network as claimed in claim 4, characterized in that: Each of the second connecting pipes is provided with a switch valve.

6. The heating system with interconnected heat source and heating pipe network as claimed in claim 1, characterized in that: The heat supply system in which the heat source is interconnected with the heat supply network also includes a heat storage unit, which is a heat storage box. The heat storage box is arranged between the connection box and the thermal power station. The inner cavity of the heat storage box is provided with a partition plate arranged in a horizontal direction. The partition plate divides the inner cavity of the heat storage box into a heat storage cavity and a heating cavity. The heat storage cavity is located above the heating cavity. The heat storage cavity is respectively connected to a plurality of the heating tees and the thermal power station, and a heating device is arranged in the heating cavity.

7. The heat supply system with interconnected heat source and heat supply network as claimed in claim 6, characterized in that: The heating equipment is a boiler heating device.

8. The heat supply system with interconnected heat source and heat supply network as claimed in claim 6, characterized in that: The heating equipment is a photovoltaic heating device.

9. The heat supply system with interconnected heat source and heat supply network as claimed in claim 1, characterized in that: The connection box also includes a shell, which forms a water storage cavity. A support frame is provided in the water storage cavity. A plurality of heating tees are provided on the support frame from top to bottom. Three openings of the heating tees respectively pass through the water storage cavity. A heat exchange medium is provided in the water storage cavity.

10. The heat supply system with interconnected heat source and heat supply network according to claim 1, characterized in that: The standby boiler room heating unit also has a first heating pipe and a first return pipe, and the first heating pipe and the first return pipe are respectively connected to the independent network heating station.

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