Heat exchange system suitable for heating raw water

Abstract

The invention relates to a heat exchange system suitable for raw water heating, and belongs to the technical field of chemical water heating in power plants, the heat exchange system comprises a heat exchange shell, an outer sleeve is arranged in the heat exchange shell, an inner sleeve is hermetically sleeved in the outer sleeve, the input end of the inner sleeve is connected with a water inlet pipeline, and the output end of the inner sleeve is connected with a water outlet pipeline; the free end of the water outlet pipeline is connected with a multi-medium filter; one end of the outer sleeve is connected with a first gas conveying pipeline, the free end of the first gas conveying pipeline is connected with a high-temperature gas source, the other end of the outer sleeve is connected with a second gas conveying pipeline, and the free end of the second gas conveying pipeline is connected with a first exhaust device. Pipeline vibration caused by impact of gas and water can be effectively avoided, and normal operation of equipment is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to a heat exchange system suitable for raw water heating, belonging to the technical field of chemical water heating in power plants. BACKGROUND

[0002] In order to accelerate the transformation of the energy industry structure, green energy power generation, as a clean, efficient, low-carbon and safe energy utilization form, is the best choice for future industry development. In the long run, green energy power plants with gas turbine power plants as the main clean energy will still be the key direction of energy structure adjustment, and the chemical water heating system of the gas turbine power plant is an essential equipment for water production in power plants.

[0003] At present, the raw water heater of the power plant is a mixed type heating equipment which directly heats water to the required temperature by steam. It is a pipeline type mixed heating equipment used for steam and water mixed heating. The raw water heater is directly connected to the pipeline system. The heated liquid flows at high speed in the nozzle. The steam is pressed into the heated liquid in the nozzle at high speed from the small inclined holes on the outer wall of the nozzle. The two are instantaneously mixed well in the high-speed flow, thereby achieving the purpose of heating water.

[0004] However, most raw water heaters are realized by directly contacting high-temperature steam with cold water. The raw water is heated to the required temperature by mixing steam with raw water. In the process of putting into operation, the mixing of steam and water in the heater will produce a certain impact force, causing the vibration of the pipeline or the inner wall, which has the risk of damaging the equipment and the pipeline. At the same time, the vibration of the steam pipeline has the risk of steam leakage, so it is urgent to improve. SUMMARY

[0005] In order to overcome the above-mentioned shortcomings in the prior art, the present application designs a heat exchange system suitable for raw water heating, which can effectively avoid the vibration of the pipeline caused by the impact of gas and water, and is beneficial to the normal operation of the equipment.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A heat exchange system suitable for raw water heating, comprising a heat exchange shell, an outer sleeve is arranged inside the heat exchange shell, an inner sleeve is sealingly arranged in the outer sleeve, a water inlet pipe is connected to the input end of the inner sleeve, a water outlet pipe is connected to the output end of the inner sleeve, and a multi-medium filter is connected to the free end of the water outlet pipe. One end of the outer sleeve is connected with a gas supply pipe one, the free end of the gas supply pipe one is connected with a high-temperature gas source, the other end of the outer sleeve is connected with a gas supply pipe two, and the free end of the gas supply pipe two is connected with an exhaust device one.

[0007] Further, a rotating main rod is rotatably installed inside the inner sleeve, one end of the rotating main rod close to the water inlet pipeline is fixedly installed with a flow blocking fan blade one, and the other end of the rotating main rod away from the water inlet pipeline is rotatably and sealingly penetrated through the inner sleeve and is in transmission connection with a driving assembly, the driving assembly is used for driving the rotating main rod to rotate.

[0008] Further, the rotating main rod is rotatably sleeved with a flow blocking fan blade two on the rod body arranged inside the inner sleeve, the flow blocking fan blade two is in transmission connection with the driving assembly, the driving assembly can simultaneously drive the flow blocking fan blade one and the flow blocking fan blade two to rotate, and the flow blocking fan blade two is arranged at one end of the inner sleeve connected with the water outlet pipeline.

[0009] Further, an inner cleaning sleeve ring is arranged between the flow blocking fan blade one and the flow blocking fan blade two, the inner cleaning sleeve ring is slidably sleeved on the rotating main rod, and an inner wall cleaning brush is arranged on the outer circle of the inner cleaning sleeve ring and is attached to the inner wall of the inner sleeve.

[0010] Further, the driving assembly comprises a driving motor, a base, a rotating gear ring one and a rotating gear ring two, two installation sleeves are fixedly installed at the top end of the base, the rotating gear ring one is rotatably sleeved inside one of the installation sleeves and is fixedly sleeved with the rotating main rod, the rotating gear ring two is rotatably sleeved inside the other installation sleeve and is rotatably sleeved with the rotating main rod, a rotating sleeve rod is coaxially fixedly installed on the side of the rotating gear ring two away from the rotating gear ring one, the free end of the rotating sleeve rod is rotatably and sealingly penetrated through the inner sleeve and is fixedly connected with the flow blocking fan blade two, the driving motor is used for driving the rotating main rod to rotate, and a linkage mechanism is arranged between the rotating gear ring one and the rotating gear ring two.

[0011] Further, the linkage mechanism comprises rotating gears one and two in mutual engagement, two supports are fixedly installed at the top end of the base, the two supports are arranged between the two installation sleeves, the rotating gears one and two are rotatably installed on the two supports respectively, the rotating gear one is in engagement with the inner circle of the rotating gear ring one, and the rotating gear two is in engagement with the inner circle of the rotating gear ring two.

[0012] Further, an outer cleaning sleeve ring is slidably installed on the inner wall of the outer sleeve, the outer cleaning sleeve ring is movably sleeved outside the inner sleeve, an outer wall cleaning brush is arranged on the inner circle of the outer cleaning sleeve ring and is attached to the outer wall of the inner sleeve, and the outer cleaning sleeve ring is driven to reciprocate by the gas input through the gas pipeline one and the gas branch pipeline.

[0013] Further, the gas branch pipeline comprises a gas branch pipeline one and a gas branch pipeline two, the gas branch pipeline one is connected with the gas pipeline two, and the free end of the gas branch pipeline two is connected with the exhaust device two.

[0014] Further, the base is in an isosceles triangular block structure.

[0015] Further, the water inlet pipeline is provided with an adjusting door one; The water outlet pipeline is sequentially provided with a temperature sensor and a pressure sensor; The gas conveying pipeline one is provided with an adjusting door two; The gas conveying pipeline two is provided with a water trap one; The gas conveying branch pipeline one is provided with an adjusting door three; The gas conveying branch pipeline two is sequentially provided with an adjusting door four and a water trap two.

[0016] Compared with the prior art, the present application has the following characteristics and beneficial effects: The present application realizes heating by sealing the inner sleeve pipe of raw water flow and the outer sleeve pipe of high-temperature gas flow, so that the heat of the high-temperature gas entering the outer sleeve pipe through the gas conveying pipeline one can only be indirectly transmitted to the raw water flowing in the inner sleeve pipe from the water inlet pipeline through the pipe wall of the inner sleeve pipe. The heated water is smoothly conveyed to the multi-medium filter through the water outlet pipeline, and in this process, the high-temperature gas and the raw water are physically isolated throughout the process, completely eliminating the direct mixing of the two, thus completely eliminating the severe hydraulic impact and pipe vibration caused thereby, effectively protecting the structural integrity of all pipelines and equipment such as the water inlet pipeline, the water outlet pipeline, the gas conveying pipeline one, the gas conveying pipeline two, and the heat exchange shell, and greatly improving the safety and reliability of system operation. At the same time, the gas cooled after heat exchange and the possible condensate can be smoothly discharged through the gas conveying pipeline two, ensuring the stability of the heat exchange cavity pressure and the continuous heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the system connection diagram of the present application; Figure 2 is the internal cross-sectional structure diagram of the heat exchange shell of the present application; Figure 3 is the cooperation diagram of the driving assembly and the rotating main rod from the first perspective; Figure 4 is the cooperation diagram of the driving assembly and the rotating main rod from the second perspective.

[0018] Wherein the reference signs are: 1000, heat exchange shell; 100, water inlet pipeline; 101, adjusting door one; 102, temperature sensor; 103, pressure sensor; 104, multi-medium filter; 105, water outlet pipeline; 200, outer sleeve pipe; 300, gas conveying pipeline one; 301, adjusting door two; 302, outer cleaning sleeve ring; 3021, outer wall cleaning brush; 400, gas conveying pipeline two; 401, drain one; 402, exhaust device one; 500, gas conveying branch one; 501, adjusting door three; 600, gas conveying branch two; 601, adjusting door four; 602, exhaust device two; 603, drain two; 700, driving assembly; 1, rotating main rod; 2, resistance flow vane one; 3, resistance flow vane two; 4, inner cleaning sleeve ring; 41, inner wall cleaning brush; 5, rotating sleeve rod; 6, inner sleeve pipe; 7, base; 8, mounting sleeve; 9, rotating gear ring one; 10, rotating gear ring two; 11, rotating gear one; 12, rotating gear two. DETAILED DESCRIPTION

[0019] The application will be described in more detail below with reference to examples.

[0020] Example one Please refer to Figure 1 The heat exchange system for heating raw water of the embodiment comprises a heat exchange shell 1000.

[0021] The heat exchange shell 1000 is internally provided with an outer sleeve pipe 200, the outer sleeve pipe 200 is internally and sealingly provided with an inner sleeve pipe 6, the inner sleeve pipe 6 is connected with a water inlet pipeline 100 at an input end, and the water inlet pipeline 100 inputs chemical raw water.

[0022] The inner sleeve pipe 6 is connected with a water outlet pipeline 105 at an output end, and the water outlet pipeline 105 is connected with a multi-medium filter 104 at a free end.

[0023] Specifically, the outer sleeve pipe 200 is connected with a gas conveying pipeline one 300 at one end, the gas conveying pipeline one 300 is connected with a high-temperature gas source at a free end, the outer sleeve pipe 200 is connected with a gas conveying pipeline two 400 at the other end, and the gas conveying pipeline two 400 is connected with an exhaust device one 402 at a free end. The high-temperature gas is output from the high-temperature gas source, enters the outer sleeve pipe 200 through the gas conveying pipeline one 300, heats the water in the inner sleeve pipe 6 inside the outer sleeve pipe 200, and finally the water vapor between the outer sleeve pipe 200 and the inner sleeve pipe 6 is output to the multi-medium filter 104 through the gas conveying pipeline two 400.

[0024] From the above description, it can be known that by sealingly sleeving the inner sleeve pipe 6 in which the raw water flows and the outer sleeve pipe 200 in which the high-temperature gas flows, the heat of the high-temperature gas entering the outer sleeve pipe 200 through the gas conveying pipeline one 300 can only be indirectly transferred to the raw water from the water inlet pipeline 100 flowing in the inner sleeve pipe 6 through the pipe wall of the inner sleeve pipe 6, so that the heating is realized.

[0025] The heated water is smoothly transported to the multi-medium filter 104 through the outlet pipeline 105, in the process, the high-temperature gas is physically isolated from the raw water throughout the process, completely eliminating the direct mixing of the two, thus completely eliminating the resulting severe hydraulic impact and pipe vibration, effectively protecting the structural integrity of all pipelines and equipment such as the inlet pipeline 100, the outlet pipeline 105, the gas conveying pipeline one 300, the gas conveying pipeline two 400, and the heat exchange shell 1000, greatly improving the safety and reliability of the system operation. At the same time, the gas cooled after heat exchange and the condensate that may be generated can be smoothly discharged through the gas conveying pipeline two 400, ensuring the stability of the heat exchange cavity pressure and the continuous heat exchange efficiency.

[0026] Further, the inlet pipeline 100 is provided with an adjusting door one 101, which can accurately control the flow of raw water entering the inner sleeve 6, providing a direct means for adjusting the heating load and outlet water temperature.

[0027] The outlet pipeline 105 is sequentially provided with a temperature sensor 102 and a pressure sensor 103, which can monitor the temperature and pressure of the heated water flow in real time, providing key data feedback for the system operation state, ensuring that the outlet water temperature meets the process requirements of the subsequent multi-medium filter 104, and preventing pipeline overpressure and other safety hazards through pressure monitoring.

[0028] The gas conveying pipeline one 300 is provided with an adjusting door two 301, which is used to adjust the flow of high-temperature gas entering the outer sleeve 200, thereby cooperating with the water flow adjustment to achieve precise control of the heat exchange power.

[0029] The gas conveying pipeline two 400 is provided with a trap one 401, which functions to timely remove the condensed water generated in the outer sleeve 200 due to gas cooling, preventing the accumulation of condensed water affecting the heat exchange efficiency, and avoiding water hammer or corrosion risks, ensuring the smoothness of the gas passage and the stable progress of the heat exchange process.

[0030] Embodiment Two Please refer to Figures 2-4 The heat exchange system for raw water heating of the present embodiment is based on the above-mentioned embodiment one, and the inner sleeve 6 is internally rotatably installed with a rotating main rod 1, one end of the rotating main rod 1 close to the inlet pipeline 100 is fixedly installed with a flow resistance fan blade one 2, and the other end of the rotating main rod 1 away from the inlet pipeline 100 is rotatably sealed through the inner sleeve 6 and then transmissionally connected with a driving assembly 700, the driving assembly 700 is used to drive the rotating main rod 1 to rotate.

[0031] As can be seen from the above description, when the driving assembly 700 drives the rotation of the rotating main rod 1 and the flow resistance vane one 2 fixed thereon, the flow resistance vane one 2 will disturb the raw water flowing into the inner sleeve 6 from the water inlet pipeline 100, break the laminar flow state of the water flow in the pipe, and form a turbulent flow. This turbulent flow effect significantly enhances the convective heat exchange efficiency between the water flow and the inner sleeve 6 pipe wall, so that the heat of the high-temperature gas from the outer sleeve 200 can be more quickly and uniformly transferred to the water, thereby improving the heating speed and energy efficiency of the entire system.

[0032] At the same time, the continuous water flow shear force generated by the rotating flow resistance vane one 2 can effectively prevent the scaling ions such as calcium and magnesium in the water from adhering and depositing on the inner wall of the inner sleeve 6, thereby playing a role in online cleaning and inhibiting scale formation, ensuring the stability of the heat exchange efficiency during long-term operation, and reducing the maintenance requirements.

[0033] Further, the rotating main rod 1 is sleeved with the flow resistance vane two 3 on the rod inside the inner sleeve 6, the flow resistance vane two 3 is in transmission connection with the driving assembly 700, and the driving assembly 700 can drive the rotation of the flow resistance vane one 2 and the flow resistance vane two 3 at the same time, and the flow resistance vane two 3 is arranged at one end of the inner sleeve 6 connected with the water outlet pipeline 105.

[0034] The driving assembly 700 drives the rotation of the flow resistance vane one 2 and the flow resistance vane two 3 at the same time, so that the flow resistance vane one 2 disturbs the water flow at the water inlet end and the flow resistance vane two 3 disturbs the water flow at the water outlet end, thereby realizing double and uniform stirring of the raw water in the entire length range of the inner sleeve 6, further strengthening the heat exchange between the water flow and the inner sleeve 6 pipe wall, and ensuring more sufficient heat transfer and more uniform water temperature.

[0035] Further, the inner cleaning sleeve ring 4 is arranged between the flow resistance vane one 2 and the flow resistance vane two 3, the inner cleaning sleeve ring 4 is sleeved on the rotating main rod 1, and the inner wall cleaning brush 41 is arranged on the outer circle of the inner cleaning sleeve ring 4 and abuts against the inner wall of the inner sleeve 6.

[0036] In this embodiment, when the rotating main rod 1 is driven to rotate by the driving assembly 700, the flow resistance vane one 2 and the flow resistance vane two 3 arranged thereon rotate synchronously.

[0037] In this process, the inner cleaning sleeve ring 4 can slide along the axial direction of the rotating main rod 1 under the backflow thrust of the flow resistance vane two 3, and the inner wall cleaning brush 41 abutting against the inner wall of the inner sleeve 6 can continuously and comprehensively scrape and brush the entire inner wall surface of the inner sleeve 6 through this sliding, thereby removing the soft scale, biological mucosa or other deposits that have adhered to the pipe wall, ensuring that the heat transfer rate through the pipe wall of the inner sleeve 6 always maintains at a high level, reducing the frequency and cost of chemical cleaning or manual maintenance during system shutdown, and significantly improving the availability and economy of the equipment.

[0038] When the rotating main rod 1 stops rotating, the resistance fan blade one 2 and the resistance fan blade two 3 will also stop rotating, at this time the inner cleaning collar 4 will be reset under the action of the water flow, and the reciprocating brushing of the inner cleaning collar 4 can be realized by starting and stopping the rotation of the rotating main rod 1.

[0039] Further, the driving assembly 700 comprises a driving motor, a base 7, a rotating gear ring one 9 and a rotating gear ring two 10.

[0040] Among them, two installation sleeves 8 are fixedly installed at the top end of the base 7, the rotating gear ring one 9 is rotatably sleeved in one of the installation sleeves 8 and is fixedly sleeved with the rotating main rod 1, the rotating gear ring two 10 is rotatably sleeved in the other installation sleeve 8 and is rotatably sleeved with the rotating main rod 1, the rotating sleeve rod 5 is coaxially fixedly installed on the side of the rotating gear ring two 10 away from the rotating gear ring one 9, the free end of the rotating sleeve rod 5 is rotatably sealed through the inner sleeve 6 and is fixedly connected with the resistance fan blade two 3, the driving motor is used to drive the rotating main rod 1 to rotate, and the linkage mechanism is installed between the rotating gear ring one 9 and the rotating gear ring two 10.

[0041] From the above description, it can be known that the driving motor directly drives the rotating main rod 1 to rotate, and the rotating gear ring one 9 fixedly sleeved on the rotating main rod 1 rotates synchronously.

[0042] At the same time, through the linkage mechanism arranged between the rotating gear ring one 9 and the rotating gear ring two 10, the rotation of the rotating main rod 1 is transmitted to the rotating gear ring two 10 rotatably sleeved thereon, and the rotating gear ring two 10 can rotate synchronously, therefore, the rotating sleeve rod 5 fixedly coaxial with the rotating gear ring two 10 also rotates synchronously, thereby driving the resistance fan blade two 3 to rotate synchronously.

[0043] Through a driving motor, a rotating main rod 1 and a gear transmission system on the base 7, the synchronous and reliable driving of the resistance fan blade one 2 and the resistance fan blade two 3 can be realized, and the cooperation and stability of the double-point turbulence effect are ensured.

[0044] Further, the linkage mechanism comprises rotating gears one 11 and two 12 which are meshed with each other, two brackets are fixedly installed at the top end of the base 7, the two brackets are arranged between the two installation sleeves 8, the rotating gears one 11 and two 12 are rotatably and detachably installed on the two brackets respectively, and the rotating gear one 11 is meshed with the inner ring of the rotating gear ring one 9, and the rotating gear two 12 is meshed with the inner ring of the rotating gear ring two 10.

[0045] From the above description, it can be known that when the driving motor drives the rotating main rod 1 and the rotating gear ring one 9 fixedly sleeved thereon to rotate, the rotating gear one 11 meshed with the inner ring of the rotating gear ring one 9 rotates synchronously, and drives the rotating gear two 12 directly meshed therewith to rotate reversely synchronously.

[0046] The rotation of the rotating gear two 12 drives the inner ring of the rotating gear ring two 10 engaged with it, and finally makes the rotating gear ring two 10 and the rotating sleeve rod 5 coaxially fixed with it and the second flow blocking fan 3 start to rotate.

[0047] The linkage mechanism makes full use of the internal space of the rotating gear ring one 9 and the rotating gear ring two 10 for power transmission, greatly saving the external installation space, and at the same time, the rotating speed change of the rotating gear one 11 and the rotating gear two 12 can be realized by installing different models of gears. The operator can flexibly select and match the gear set with a specific gear ratio according to the specific characteristics of raw water (such as viscosity, solid content), heat exchange load demand or anti-fouling strength requirement.

[0048] In the embodiment, the linkage mechanism can be disabled by removing the rotating gear two 12, so that only the rotating main rod 1 rotates with the first flow blocking fan 2, thereby realizing flow blocking, and the driving mode is switched from the double-fan linkage to the single-point flow disturbance mode driven by the rotating main rod 1 only, thereby improving the flexibility of the system.

[0049] Specifically, when the raw water quality is good and the fouling tendency is low, or only the basic heat exchange intensity needs to be maintained, the operator can choose to remove the rotating gear two 12 to stop the second flow blocking fan 3 from working. At this time, only the first flow blocking fan 2 performs flow disturbance, which can reduce the load of the driving assembly 700, save power consumption, and reduce the wear of mechanical parts while ensuring the basic heat exchange enhancement effect. Conversely, in the case of hard water, easy fouling or maximum heat exchange efficiency, the rotating gear two 12 can be installed to restore the double-fan synchronous strong flow disturbance and cleaning mode.

[0050] The base 7 is an isosceles triangular block structure, which can play a role in stable support.

[0051] Embodiment three Please refer to Figures 1-4 The heat exchange system for raw water heating in the embodiment is based on the above-mentioned embodiment one or embodiment two, and the outer cleaning sleeve ring 302 is slidably installed on the inner wall of the outer sleeve 200 and movably sleeved outside the inner sleeve 6. The inner ring of the outer cleaning sleeve ring 302 is provided with an outer wall cleaning brush 3021, which is arranged in close contact with the outer wall of the inner sleeve 6. The outer cleaning sleeve ring 302 is driven to reciprocate by the gas input through the gas pipeline one 300 and the gas branch.

[0052] Specifically, the gas branch includes a gas branch one 500 and a gas branch two 600. The gas branch one 500 is connected with a high-temperature gas source, the gas branch one 500 is connected with the gas pipeline two 400, and the free end of the gas branch two 600 is connected with an exhaust device two 602.

[0053] For example,Figure 1 For example, the operator can select the driving gas source by valve switching: when selecting the gas from the main gas pipeline 300, the high-pressure gas blows and pushes the outer cleaning sleeve 302 to move right, so that the outer wall cleaning brush 3021 on it scratches the outer wall of the inner sleeve 6; when selecting the gas from the gas pipeline branch, the gas flow pushes the outer cleaning sleeve 302 to move left, and then the outer wall cleaning brush 3021 moves left for cleaning.

[0054] As can be seen from the above description, the outer cleaning sleeve 302 can reciprocate and scratch the entire outer surface of the inner sleeve 6, thereby avoiding the attachment of foreign matter on the outer wall of the inner sleeve 6 to thicken the pipe wall and affect the heat exchange efficiency, and through the cooperation with the inner cleaning sleeve 4, the heat exchange pipe wall of the inner sleeve 6 can be actively maintained on the inner and outer surfaces, greatly improving the stability, reliability and economy of the long-term operation of the heat exchange system.

[0055] Further, the gas pipeline branch one 500 is provided with an adjusting door three 501; The gas pipeline branch two 600 is sequentially provided with an adjusting door four 601 and a drain trap two 603.

[0056] The working principle of the present application: by sealing the inner sleeve 6 flowing with raw water and the outer sleeve 200 flowing with high-temperature gas, the heat of the high-temperature gas entering the outer sleeve 200 through the gas pipeline one 300 can only be indirectly transmitted to the raw water flowing in the inner sleeve 6 from the water inlet pipeline 100 through the pipe wall of the inner sleeve 6, thereby realizing heating.

[0057] The heated water is smoothly transported to the multi-medium filter 104 through the water outlet pipeline 105, in the process, the high-temperature gas and the raw water are physically isolated throughout the process, completely eliminating the direct mixing of the two, thereby completely eliminating the resulting severe hydraulic impact and pipe vibration, effectively protecting the structural integrity of all pipelines and equipment such as the water inlet pipeline 100, the water outlet pipeline 105, the gas pipeline one 300, the gas pipeline two 400 and the heat exchange shell 1000, greatly improving the safety and reliability of the system operation. At the same time, the gas and possible condensate after heat exchange and cooling can be smoothly discharged through the gas pipeline two 400, ensuring the stability of the heat exchange cavity pressure and the continuity of the heat exchange efficiency.

[0058] In the description of the present application, it should be noted that the terms "inner", "outer", "upper" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0059] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0060] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A heat exchange system suitable for heating raw water, characterized in that: The device includes a heat exchange shell (1000), an outer sleeve (200) is provided inside the heat exchange shell (1000), an inner sleeve (6) is sealed inside the outer sleeve (200), an inlet pipe (100) is connected to the inlet end of the inner sleeve (6), an outlet pipe (105) is connected to the outlet end of the inner sleeve (6), and a multi-media filter (104) is connected to the free end of the outlet pipe (105). One end of the outer tube (200) is connected to a gas supply line one (300), the free end of the gas supply line one (300) is connected to a high-temperature gas source, and the other end of the outer tube (200) is connected to a gas supply line two (400), the free end of the gas supply line two (400) is connected to an exhaust device one (402).

2. The heat exchange system for heating raw water according to claim 1, characterized in that: The inner sleeve (6) is rotatably mounted with a rotating main rod (1). A flow-blocking fan blade (2) is fixedly mounted on one end of the rotating main rod (1) near the water inlet pipe (100). The rotating main rod (1) away from the water inlet pipe (100) is rotatably sealed through the inner sleeve (6) and then connected to a drive assembly (700). The drive assembly (700) is used to drive the rotating main rod (1) to rotate.

3. A heat exchange system suitable for heating raw water according to claim 2, characterized in that: The rotating main rod (1) is provided with a flow-blocking fan blade (2) rotatably mounted on the rod body inside the inner sleeve (6). The flow-blocking fan blade (2) is connected to the drive assembly (700) for transmission. The drive assembly (700) can drive the flow-blocking fan blade (1) and the flow-blocking fan blade (2) to rotate at the same time. The flow-blocking fan blade (2) is located at one end of the inner sleeve (6) connected to the water outlet pipe (105).

4. A heat exchange system suitable for heating raw water according to claim 3, characterized in that: An inner cleaning ring (4) is provided between the first (2) and the second (3) of the flow-blocking fan blade. The inner cleaning ring (4) is slidably sleeved on the rotating main rod (1), and an inner wall cleaning brush (41) is provided on the outer ring of the inner cleaning ring (4). The inner wall cleaning brush (41) is set in close contact with the inner wall of the inner sleeve (6).

5. A heat exchange system suitable for heating raw water according to claim 4, characterized in that: The drive assembly (700) includes a drive motor, a base (7), a rotating gear ring one (9) and a rotating gear ring two (10). Two mounting sleeves (8) are fixedly installed at a distance from the top of the base (7). The rotating gear ring one (9) is rotatably fitted inside one of the mounting sleeves (8) and fixedly fitted with the rotating main rod (1). The rotating gear ring two (10) is rotatably fitted inside the other mounting sleeve (8) and rotatably fitted with the rotating main rod (1). A rotating sleeve rod (5) is coaxially fixedly installed on the side of the rotating gear ring two (10) away from the rotating gear ring one (9). The free end of the rotating sleeve rod (5) is rotatably sealed through the inner sleeve (6) and fixedly connected to the flow-blocking fan blade two (3). The drive motor is used to drive the rotating main rod (1) to rotate. A linkage mechanism is installed between the rotating gear ring one (9) and the rotating gear ring two (10).

6. A heat exchange system suitable for heating raw water according to claim 5, characterized in that: The linkage mechanism includes a first rotating gear (11) and a second rotating gear (12) that mesh with each other. Two brackets are fixedly installed on the top of the base (7). The two brackets are set between two mounting sleeves (8). The first rotating gear (11) and the second rotating gear (12) are rotatably installed on the two brackets respectively. The first rotating gear (11) meshes with the inner ring of the first rotating gear ring (9), and the second rotating gear (12) meshes with the inner ring of the second rotating gear ring (10).

7. A heat exchange system suitable for heating raw water according to claim 1, characterized in that: An outer cleaning ring (302) is slidably installed on the inner wall of the outer sleeve (200), and the outer cleaning ring (302) is movably sleeved on the outside of the inner sleeve (6). An outer wall cleaning brush (3021) is provided on the inner ring of the outer cleaning ring (302). The outer wall cleaning brush (3021) is set in close contact with the outer wall of the inner sleeve (6). The outer cleaning ring (302) is driven to reciprocate by the gas input through the gas supply line (300) and the gas supply branch.

8. A heat exchange system suitable for heating raw water according to claim 7, characterized in that: The gas transmission branch includes gas transmission branch one (500) and gas transmission branch two (600). Gas transmission branch one (500) is connected to gas transmission pipeline two (400), and the free end of gas transmission branch two (600) is connected to exhaust device two (602).

9. A heat exchange system suitable for heating raw water according to claim 5, characterized in that: The base (7) is an isosceles triangular block structure.

10. A heat exchange system suitable for heating raw water according to any one of claims 1-9, characterized in that: A regulating valve (101) is provided on the water inlet pipe (100); A temperature sensor (102) and a pressure sensor (103) are sequentially installed on the water outlet pipe (105). A regulating valve 2 (301) is provided on the gas transmission pipeline 1 (300); A steam trap (401) is installed on the second gas pipeline (400). A regulating valve three (501) is installed on the gas transmission branch one (500); The gas transmission branch 2 (600) is provided with regulating valve 4 (601) and condensate drain 2 (603) in sequence.

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