Water cooling device for combustion equipment and combustion equipment

Abstract

The present invention relates to a water cooling device for combustion equipment and the combustion equipment, the water cooling device comprising an end cover and an outer tube, a water riser, and an inner tube arranged in sequence from the outside to the inside, one end of the outer tube and one end of the inner tube being connected to the end cover, a first water flow channel being formed between the inner tube and the water riser, a second water flow channel being formed between the water riser and the outer tube, a water separation component being connected to the end of the water riser near the end cover, a flow guide being provided between the water separation component and the end cover, the first water flow channel and the second water flow channel being connected via the flow guide, the water separation component comprising a water separation block and an elastic member connected to the water separation block, the elastic member having the same expansion and contraction direction as the length direction of the water riser. The present invention can solve the problem of stress concentration or even damage to the end cover caused by thermal expansion of the pipe fittings, has a simple and reasonable structure, can maintain a stable water flow velocity, ensures a stable heat exchange effect, and does not increase equipment operating consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion equipment cooling, and in particular to a water cooling device for combustion equipment and the combustion equipment. Background Art

[0002] Currently, in the field of high-temperature and high-pressure coal gasification, localized damage to the heated surface of the combustion equipment's front cover is a common problem in gasification units during operation, seriously impacting the unit's safe, stable, and long-term operation. The water-cooling system for combustion equipment typically consists of several water-jacketed devices connected by flanges. Its structure generally includes a front cover and a water separation component, with a certain distance between the front cover and the water separation component allowing water to flow through this portion to cool the front cover. To enhance the heat transfer efficiency of the front cover, a flow guide is typically machined into the front cover to increase convective heat transfer between the water and the front cover, reduce the front cover temperature, and increase the life of the front cover. However, due to the different thermal expansion lengths of the different cooling water pipes in the water-cooling system, the water separation component can easily squeeze the front cover, causing stress concentration and damage to the front cover, resulting in bulging and cracking of the combustion equipment's front cover. To prevent damage to the front cover, a certain distance is usually pre-designed between the water separation component and the flow guide component of the front cover. However, in actual operation, since the flow guide component is separated from the water separation component by a certain distance, under the condition of the same water volume, the water flow area increases, the flow rate decreases, and the heat exchange effect becomes worse compared with no separation distance. In order to ensure the water flow rate, the water volume needs to be increased, which will cause the water flow rate and flow resistance to increase, and increase pump consumption. Summary of the Invention

[0003] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a water cooling device and combustion equipment for combustion equipment, which can solve the problem of stress concentration and even damage of the end cover caused by thermal expansion of the pipe, and can maintain a stable water flow rate without increasing the equipment operation consumption.

[0004] In order to achieve the above-mentioned objectives, the present invention provides a water cooling device for combustion equipment, which includes an end cover and an outer tube, a water-blocking pipe, and an inner tube arranged in sequence from the outside to the inside, one end of the outer tube and one end of the inner tube are connected to the end cover, a first water flow channel is formed between the inner tube and the water-blocking pipe, and a second water flow channel is formed between the water-blocking pipe and the outer tube. A water separation component is connected to the end of the water-blocking pipe close to the end cover, and a guide member is provided between the water separation component and the end cover. The first water flow channel and the second water flow channel are connected through the guide member. The water separation component includes a water separation block and an elastic member connected to the water separation block, and the expansion and contraction direction of the elastic member is the same as the length direction of the water-blocking pipe.

[0005] In some embodiments, the elastic member is arranged between the watertight pipe and the water separation block, one end of the watertight pipe close to the end cover is connected to one end of the water separation block through the elastic member, and the other end of the water separation block is connected to the guide member.

[0006] In some embodiments, one end of the elastic member is sealed to an end of the watertight pipe close to the end cover, and the other end of the elastic member is sealed to the water separation block.

[0007] In some embodiments, one end of the guide member is in contact with and connected to the water separation block, and the other end of the guide member is in contact with and connected to the end cover; or

[0008] One end of the flow guide is fixedly connected to the water separation block, and the other end of the flow guide is in contact with the end cover; or

[0009] One end of the flow guide is in contact with and connected to the water separation block, and the other end of the flow guide is fixedly connected to the end cover.

[0010] In some embodiments, the elastic member is arranged between the water separation block and the guide member, one end of the watertight pipe close to the end cover is connected to one end of the water separation block, and the other end of the water separation block is connected to the guide member through the elastic member.

[0011] In some embodiments, the outer periphery of the elastic member is a closed structure to cooperate with the watertight pipe to form the first water flow channel and the second water flow channel separated from each other.

[0012] In some embodiments, the end cap is an annular structure, the inner ring edge of the end cap is sealed to the one end of the inner tube, and the outer ring edge of the end cap is sealed to the one end of the outer tube.

[0013] In some embodiments, the end of the watertight pipe away from the end cover is sealed to the outer pipe through a water sealing ring. The water sealing ring is an annular structure. The inner ring edge of the water sealing ring is sealed to the watertight pipe, and the outer ring edge of the water sealing ring is sealed to the inner wall of the outer pipe.

[0014] In some embodiments, the flow guide is one of a straight rib flow guide, an involute rib flow guide, a cylindrical spoiler flow guide, a single helix flow guide, a double helix flow guide, and a quad helix flow guide.

[0015] An embodiment of the present invention further provides a combustion device, comprising the above-mentioned water cooling device for the combustion device.

[0016] Compared with the prior art, the water cooling device for combustion equipment provided in the embodiment of the present invention sets a water separation component at one end of the water riser close to the end cover, and sets a guide member between the water separation component and the end cover, so that water flows through the guide member to cool the end cover, thereby ensuring that the end cover operates safely in a high-temperature environment; at the same time, the water separation block is connected to an elastic member. When the water riser expands due to heat, the elastic buffering effect of the elastic member can avoid the problem of the end cover being squeezed by the water separation block when it moves toward the end cover with the water riser, resulting in stress concentration and damage to the end cover, thereby extending the service life of the end cover and providing strong guarantee for the safe, stable and long-term operation of the combustion equipment; in addition, the present invention has a simple and reasonable structure, and can ensure the stability of the water flow velocity and the heat exchange effect when the elastic member is expanded and contracted, and will not increase the consumption of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the embodiments of the invention. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0018] Figure 1 A cross-sectional view of a water cooling device for combustion equipment according to an embodiment of the present invention;

[0019] Figure 2 sectional view of a water cooling component of a water cooling device for combustion equipment according to an embodiment of the present invention ( Figure 1 middle circled part);

[0020] Figure 3 A cross-sectional view of another water-cooling component of a water-cooling device for combustion equipment according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic structural diagram of a flow guide member of a water cooling device for combustion equipment according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1-end cover; 2-outer tube; 3-water riser; 4-inner tube; 5-water separation component, 51-water separation block, 52-elastic part; 6-flow guide; 7-water seal ring; 8-three-pronged pipe; 91-docking flange, 92-mounting flange; 101-first water flow channel, 102-second water flow channel, 201-first water inlet and outlet, 202-second water inlet and outlet. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0027] Figures 1 to 3 This is a schematic structural diagram of a water cooling device for combustion equipment according to an embodiment of the present invention (the arrow direction is the direction of water flow). Figures 1 to 3 As shown, an embodiment of the present invention provides a water cooling device for combustion equipment, which includes an end cover 1 and an outer tube 2, a water riser 3, and an inner tube 4 arranged in sequence from the outside to the inside, one end of the outer tube 2 and one end of the inner tube 4 are connected to the end cover 1, a first water flow channel 101 is formed between the inner tube 4 and the water riser 3, and a second water flow channel 102 is formed between the water riser 3 and the outer tube 2, and a water separation component 5 is connected to the end of the water riser 3 close to the end cover 1, and a guide member 6 is provided between the water separation component 5 and the end cover 1, the first water flow channel 101 and the second water flow channel 102 are connected through the guide member 6, the water separation component 5 includes a water separation block 51 and an elastic member 52 connected to the water separation block 51, and the telescopic direction of the elastic member 52 is the same as the length direction of the water riser 3.

[0028] The water cooling device for combustion equipment provided by the embodiment of the present invention installs a water separation component 5 at one end of the water riser 3 close to the end cover 1, and arranges a guide member 6 between the water separation component 5 and the end cover 1, so that water flows through the guide member 6 to cool the end cover 1, thereby ensuring that the end cover 1 operates safely in a high-temperature environment; at the same time, the water separation block 51 is connected to the elastic member 52. When the water riser 3 expands due to heat, the elastic buffering effect of the elastic member 52 can avoid the problem of the water separation block 51 squeezing the end cover 1 when moving toward the end cover 1 with the water riser 3, resulting in stress concentration and damage to the end cover 1, thereby extending the service life of the end cover 1 and providing a strong guarantee for the safe, stable and long-term operation of the combustion equipment; in addition, the water cooling device provided by the embodiment of the present invention has a simple and reasonable structure and is suitable for various combustion equipment.

[0029] Specifically, if Figure 1 As shown, the water-cooling device has a telescopic structure, with an outer tube 2, a riser 3, and an inner tube 4 coaxially spaced apart. The diameters of the outer tube 2, the riser 3, and the inner tube 4 decrease in order. A first water inlet and outlet 201 and a second water inlet and outlet 202 are defined on the sidewall of the outermost outer tube 2. The first water inlet and outlet 201 communicates with the first water flow channel 101, and the second water inlet and outlet 202 communicates with the second water flow channel 102.

[0030] In this embodiment, Figure 1 As shown, the first water inlet and outlet 201 and the second water inlet and outlet 202 are respectively provided on two opposite side walls of the outer tube 2 . When one of the first water inlet and outlet 201 and the second water inlet and outlet 202 is a water inlet, the other is a water outlet.

[0031] like Figure 1 and Figure 2 As shown, when the first water inlet and outlet 201 is the water inlet and the second water inlet and outlet 202 is the water outlet, water flows from the first water inlet and outlet 201 into the first water flow channel 101 and enters the second water flow channel 102 through the guide channel opened inside the guide member 6, and then flows out from the second water inlet and outlet 202. In another embodiment, when the second water inlet and outlet 202 is the water inlet and the first water inlet and outlet 201 is the water outlet, the water flow direction is exactly the opposite. In specific implementation, the water inlet and outlet can be determined according to actual needs. Preferably, the portion of the outer surface of the end cover 1 with a higher temperature can be set as the water inlet portion.

[0032] like Figure 1 and 2As shown, the end cap 1 is an annular structure. The inner edge of the end cap 1 is sealed to one end of the inner tube 3, and the outer edge of the end cap 1 is sealed to one end of the outer tube 2, forming a closed water flow cavity. The water riser 3 is located within the water flow cavity. The end of the water riser 3 away from the end cap 1 is sealed to the outer tube 2 via a water seal ring 7, thereby dividing the water flow cavity into a first water flow channel 101 and a second water flow channel 102. The water seal ring 7 is an annular structure. The inner edge of the water seal ring 7 is sealed to the water riser 3 (for example, by welding), and the outer edge of the water seal ring 7 is sealed to the inner wall of the outer tube 2.

[0033] like Figure 1 As shown, the outer tube 2, riser 3, and inner tube 4 are of different lengths. The three tubes operate at different temperatures and are made of different materials, resulting in different thermal expansion coefficients and different thermal expansion lengths. Furthermore, different tubes have different thermal expansion starting points. For example, in this application, the expansion starting point of the outer tube 2 is S1, the expansion starting point of the riser 3 is S2, and the expansion starting point of the inner tube 4 is S3. Calculations and practice have shown that the riser 3 expands more than the end cap 1. To avoid squeezing the end cap 1, a certain distance is placed between one end of the riser 3 and the end cap 1. A water separation component 5 and a flow guide 6 are sequentially provided at the end of the riser 3. The flow guide 6 is connected to the end cap 1 to ensure that water flows through the flow channel within the flow guide 6, cooling the end cap 1. Furthermore, the elastic member 52 of the water separation component 5 can reduce stress concentration on the end cap 1 caused by squeezing of the end cap 1 by the thermal expansion of the riser 3.

[0034] In some embodiments, as Figure 2 As shown, the elastic member 52 is provided between the water riser 3 and the water separation block 51. The end of the water riser 3 near the end cover 1 is connected to one end of the water separation block 51 via the elastic member 52, and the other end of the water separation block 51 is connected to the flow guide 6. Specifically, one end of the elastic member 52 is sealedly connected (for example, by welding and sealing) to one end of the water riser 3 (the end near the end cover 1), and the other end of the elastic member 52 is sealedly connected to the water separation block 51 to prevent water leakage.

[0035] The outer periphery of the elastic member 52 is a closed structure, so as to cooperate with the watertight pipe 3 to form a first water flow channel 101 and a second water flow channel 102 separated from each other. Figure 2 As shown, the outer periphery of the elastic member 52 is closed, which can prevent water from flowing directly from one side of the elastic member 52 to the other side, ensuring that the water flows through the guide member 6, thereby cooling the end cover 1 and ensuring that the end cover 1 operates safely in a high temperature environment.

[0036] The expansion and contraction direction of the elastic member 52 is the same as the length direction of the watertight pipe 3. When the watertight pipe 3 expands and contracts due to heat and cold and moves relative to the end cover 1, the elastic member 52 can be driven to expand and contract. Specifically, in actual operation, due to the start and stop or the change of operating conditions, when the water cooling device is assembled at room temperature, the water separation block 51 and the elastic member 52 are in the following state: Figure 2 , where the elastic member 52 is in a certain compressed state. When the combustion equipment is in operation, the pipes of the water-cooling device expand due to heat, and in particular, when the riser 3 expands due to heat and moves toward the end cover 1, the riser 3 acts on the elastic member 52, causing the elastic member 52 to be squeezed and further compressed. When the system is shut down or the operating conditions change, the riser 3 contracts and moves away from the end cover 1. At this time, the pressure on the elastic member 52 decreases, and the amount of compression of the elastic member 52 decreases. In this embodiment, by providing the elastic member 52 between the riser 3 and the water separation block 51, it is possible to avoid the situation where the riser 3 directly acts on the water separation block 51, causing the water separation block 51 to move and squeeze the end cover 1, resulting in stress concentration and damage to the end cover 1.

[0037] In addition, when the elastic member 52 expands and contracts with changes in operating conditions, the watertight pipe 3 will shrink relatively to a certain extent before the elastic member 52 drives the water separation block 51 to move away from the end cover 1 along with the watertight pipe 3. In this embodiment, the elastic member 52 is in a compressed state within the expansion and contraction range of the elastic member 52, and the water separation block 51 will not move along with the watertight pipe 3 within the expansion and contraction range of the elastic member 52. Therefore, the water separation block 51 can always be in close contact with the flow guide 6, ensuring a stable water flow rate, thereby ensuring a stable heat exchange effect, and not increasing the consumption of equipment operation; at the same time, the end cover 1 will not be squeezed due to the relative expansion of the watertight pipe 3, which can solve the problem of stress concentration or even damage to the end cover 1 caused by thermal expansion.

[0038] When the elastic member 52 is arranged between the watertight pipe 3 and the water separation block 51, the elastic member 52 is preferably an expansion joint, such as an elastic sleeve, which prevents water from passing through it laterally while achieving expansion and contraction, that is, ensuring that water flows in or out through the first water flow channel 101, the guide channel of the guide member 6 and the second water flow channel 102.

[0039] In an embodiment of the present invention, the watertight pipe 3 and the water separation block 51 are connected by an elastic member 52. The structure is reasonable and simple, and the length of the elastic member 52 can be adjusted according to the length and expansion coefficient of the watertight pipe 3 to adapt to different combustion equipment.

[0040] To ensure that water flows stably through the guide member 6, the guide member 6 is in close contact with the water separation block 51 and the end cover 1. There are many ways to connect the guide member 6, the water separation block 51 and the end cover 1. In some embodiments, the guide member 6 is in contact with the water separation block 51, and the guide member 6 is in contact with the end cover 1, that is, the guide member 6 is movably connected to the water separation block 51 and the end cover 1 respectively; in other embodiments, to prevent a certain distance from being formed between the water separation block 51 and the guide member 6, the guide member 6 and the water separation block 51 can be fixedly connected, for example, the guide member 6 and the water separation block 51 can be welded together or integrally processed and formed (forming an integrated structure), at this time, the guide member 6 is arranged on the end cover 1, and the guide member 6 is in contact with the end cover 1; in some other embodiments, to prevent the guide member 6 from moving, the guide member 6 can be fixedly connected to the end cover 1, for example, the guide member 6 and the end cover 1 are welded together or integrally processed and formed, at this time, the water separation block 51 is arranged on the guide member 6, and the water separation block 51 is in contact with the guide member 6. That is, the guide member 6 is in contact connection (movable connection) with at least one of the water separation block 51 and the end cover 1. When the elastic member 52 expands and contracts, the compression amount of the elastic member 52 changes, but it is always in a compressed state, so that the water separation block 51 and the end cover 1 are always in close contact with the guide member 6, ensuring the stability of the water flow speed, thereby ensuring the stability of the heat exchange effect, and will not increase the consumption of equipment operation.

[0041] In other embodiments, Figure 3 As shown, the elastic member 52 is arranged between the water separation block 51 and the guide member 6, the end of the watertight pipe 3 close to the end cover 1 is connected to one end of the water separation block 51, and the other end of the water separation block 51 is connected to the guide member 6 through the elastic member 52.

[0042] Specifically, one end of the watertight pipe 3 close to the end cover 1 is sealed connected to one end of the water separation block 51 (for example, sealed and fixed by welding), and the other end of the water separation block 51 is sealed connected to the elastic member 52, that is, the watertight pipe 3 is connected to the water separation block 51 and the elastic member 52 in sequence.

[0043] Furthermore, when the elastic member 52 is located at the end, the elastic member 52 is preferably an elastic ring, such as an elastic rubber ring, which can be deformed when subjected to an external force and promptly return to its original state after the external force ends.

[0044] The elastic ring is a closed annular structure, which can prevent water from flowing directly from one side of the elastic member 52 to the other side, ensuring that the water flows through the guide member 6, thereby cooling the end cover 1 and ensuring the safe operation of the end cover 1 in a high temperature environment.

[0045] To ensure that water flows stably through the guide member 6 , the guide member 6 is in close contact with the elastic member 52 and the end cover 1 . There are many ways to connect the guide member 6 , the elastic member 52 and the end cover 1 . In some embodiments, the guide member 6 is in contact with the elastic ring 52 and is in contact with the end cover 1. In this case, the guide member 6 is arranged on the end cover 1 and the elastic member 52 is arranged on the guide member 6. In other embodiments, the guide member 6 is fixedly connected to the elastic member 52, for example, by an adhesive. The guide member 6 is in contact with the end cover 1 and is in contact with the elastic member 52. In this case, the guide member 6 is arranged on the end cover 1 and the elastic member 52 is arranged on the guide member 6. In still other embodiments, the guide member 6 is in contact with the elastic member 52 and is fixedly connected to the end cover 1, for example, by welding them together or forming them as a whole. In this case, the guide member 6 is arranged on the end cover 1 and the elastic member 52 is arranged on the guide member 6. In still other embodiments, the guide member 6 is fixedly connected to the elastic member 52, for example, by an adhesive. The guide member 6 is fixedly connected to the end cover 1, welded together or formed as a whole. In this case, the guide member 6 is arranged on the end cover 1 and the elastic member 52 is arranged on the guide member 6. Since the elastic member 52 is preferably an elastic ring, when the elastic member 52 is fixedly connected to the flow guide member 6, it is preferably connected by an adhesive.

[0046] Furthermore, the water separation block 51 and the elastic member 52 may be fixedly connected by an adhesive, or may be contact-connected (movably connected).

[0047] When the elastic member 52 is arranged between the water separation block 51 and the guide member 6, the working principle of the elastic member 52 is the same as that of the elastic member 52 when the elastic member 52 is arranged between the watertight pipe 3 and the water separation block 51, and will not be repeated here.

[0048] Figure 4 FIG. 6 is a structural diagram of the flow guide 6 according to an embodiment of the present invention. Figure 4 As shown in (a) to (f), the guide member 6 can be one of a straight rib type guide member (a), an involute rib type guide member (b), a cylindrical spoiler type guide member (c), a single helix type guide member (d), a double helix type guide member (e) and a quad helix type guide member (f).

[0049] like Figure 1 As shown, the water cooling device further includes a three-pronged pipe 8 disposed at the end of the outer tube 2 and inner tube 4 away from the end cover 1 (the end opposite the end cover 1), thereby sealing the end of the water cooling device away from the end cover 1. One end of the three-pronged pipe 8 is connected to the outer tube 2 and inner tube 4, respectively, and the other end of the three-pronged pipe 8 is connected to a docking flange 91. Specifically, the inner edge of the three-pronged pipe 8 at the end facing the outer tube 2 and inner tube 4 is sealed to the inner tube 4 (for example, by welding), the outer edge is sealed to the outer tube 4, and the end of the three-pronged pipe 8 away from the outer tube 2 and inner tube 4 is sealed to the docking flange 91.

[0050] The outer circumference of the outer tube 2 is also provided with a mounting flange 92 to facilitate the installation of the water cooling device. The first water inlet and outlet 201 is provided between the three-pronged pipe 8 and the water seal ring 7, and the second water inlet and outlet 202 is provided between the water seal ring 7 and the mounting flange 92.

[0051] An embodiment of the present invention further provides a combustion device comprising the above-mentioned water cooling device. By using the above-mentioned water cooling device, the safe, stable and long-term operation of the combustion device can be ensured.

[0052] It should be noted that the above-mentioned sealing connection can be directly sealed and fixed, such as by welding, or can be sealed and connected through an intermediate piece (such as a sealing ring). The specific connection method is not specifically limited in the present invention.

[0053] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.

Claims

1. A water cooling device for combustion equipment, characterized in that: It includes an end cover and an outer tube, a watertight pipe and an inner tube arranged in sequence from the outside to the inside, one end of the outer tube and one end of the inner tube are connected to the end cover, a first water flow channel is formed between the inner tube and the watertight pipe, and a second water flow channel is formed between the watertight pipe and the outer tube. The end of the watertight pipe close to the end cover is connected to a water separation component, a guide member is provided between the water separation component and the end cover, the first water flow channel and the second water flow channel are connected through the guide member, the water separation component includes a water separation block and an elastic member connected to the water separation block, and the expansion and contraction direction of the elastic member is the same as the length direction of the watertight pipe.

2. The water cooling device for combustion equipment according to claim 1, characterized in that: The elastic member is arranged between the water-rising pipe and the water separation block. One end of the water-rising pipe close to the end cover is connected to one end of the water separation block through the elastic member, and the other end of the water separation block is connected to the guide member.

3. The water cooling device for combustion equipment according to claim 2, characterized in that: One end of the elastic member is sealed to one end of the watertight pipe close to the end cover, and the other end of the elastic member is sealed to the water separation block.

4. The water cooling device for combustion equipment according to claim 2, characterized in that: One end of the flow guide is in contact with and connected to the water separation block, and the other end of the flow guide is in contact with and connected to the end cover; or One end of the flow guide is fixedly connected to the water separation block, and the other end of the flow guide is in contact with the end cover; or One end of the flow guide is in contact with and connected to the water separation block, and the other end of the flow guide is fixedly connected to the end cover.

5. The water cooling device for combustion equipment according to claim 1, characterized in that: The elastic member is arranged between the water separation block and the guide member, one end of the watertight pipe close to the end cover is connected to one end of the water separation block, and the other end of the water separation block is connected to the guide member through the elastic member.

6. The water cooling device for combustion equipment according to claim 1, characterized in that: The outer periphery of the elastic member is a closed structure, so as to cooperate with the watertight pipe to form the first water flow channel and the second water flow channel separated from each other.

7. The water cooling device for combustion equipment according to claim 1, characterized in that: The end cover is an annular structure, the inner ring edge of the end cover is sealed to the one end of the inner tube, and the outer ring edge of the end cover is sealed to the one end of the outer tube.

8. The water cooling device for combustion equipment according to claim 1, characterized in that: The end of the watertight pipe away from the end cover is sealed to the outer pipe through a water sealing ring. The water sealing ring is an annular structure. The inner ring edge of the watertight ring is sealed to the watertight pipe, and the outer ring edge of the watertight ring is sealed to the inner wall of the outer pipe.

9. The water cooling device for combustion equipment according to claim 1, characterized in that: The flow guide is one of a straight rib type flow guide, an involute rib type flow guide, a cylindrical spoiler type flow guide, a single helix type flow guide, a double helix type flow guide and a quad helix type flow guide.

10. A combustion device, characterized in that: The water cooling device for combustion equipment comprises the water cooling device for combustion equipment according to any one of claims 1 to 9.

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