Waste heat recycling equipment for in-situ pyrolysis of oil-rich coal

Abstract

The invention discloses waste heat recycling equipment for in-situ pyrolysis of oil-rich coal, and the waste heat recycling equipment for in-situ pyrolysis of the oil-rich coal comprises a heat exchanger shell, a gas flow rate conversion assembly, a linkage assembly and a buffer assembly, and the linkage assembly is fixedly arranged on the outer wall of the heat exchanger shell. In order to solve the problems that heat exchange is insufficient and waste heat recovery is insufficient when common waste heat recovery equipment is used for carrying out waste heat recovery on a high-temperature gas product obtained through in-situ pyrolysis of oil-rich coal, a gas flow rate conversion assembly, a linkage assembly and a flow control part are designed; through cooperative use of the gas flow rate conversion assembly, the linkage assembly and the flow control part, when the flow rate of high-temperature gas is too high, the output speed of the heat exchange coil pipe can be automatically adjusted and controlled, the problem of insufficient heat exchange caused by the too high flow rate of output gas flow is avoided, and the waste heat recovery effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste heat recovery from in-situ pyrolysis of oil-rich coal, and in particular to waste heat recovery and utilization equipment from in-situ pyrolysis of oil-rich coal. Background Art

[0002] Oil-rich coal refers to coal resources with a higher tar yield, which is usually between 7% and 12%. It has the composite properties of coal, oil and gas. This type of coal can be used to preferentially extract the country's scarce oil and gas resources through medium- and low-temperature pyrolysis under in-situ air-isolated conditions underground. The products of in-situ pyrolysis of oil-rich coal include high-temperature gas. When the high-temperature gas is cooled, the waste heat of the high-temperature gas can be recovered through waste heat recovery equipment.

[0003] The existing patent document "CN212692614U A high-temperature gas waste heat recovery heat exchanger" discloses a waste heat recovery heat exchanger. Although the waste heat recovery heat exchanger in the above technical solution can recover waste heat from the high-temperature gas product of in-situ pyrolysis of oil-rich coal, in the actual mining process, due to the combined effect of various factors, the output rate of the high-temperature gas often presents the characteristics of dynamic change. When the heat exchanger recovers waste heat from the high-temperature gas, the output rate of the high-temperature gas is constantly changing. When the output rate increases, the flow rate of the gas in the heat exchanger will also increase. However, the heat exchange area of ​​the heat exchanger is fixed, and the flow rate changes more, which is prone to insufficient heat exchange and insufficient waste heat recovery.

[0004] That is, the prior art has the following technical problems: ordinary heat exchangers are prone to insufficient heat exchange when the output rate of high-temperature gas changes continuously. Therefore, in order to solve the above problem, a waste heat recovery and utilization device for in-situ pyrolysis of oil-rich coal is proposed. Summary of the invention

[0005] In this embodiment, a waste heat recovery and utilization device for in-situ pyrolysis of oil-rich coal is provided to solve the problem of insufficient heat exchange in ordinary heat exchangers in the prior art when the output rate of high-temperature gas changes continuously.

[0006] According to one aspect of the present application, there is provided a waste heat recovery and utilization device for in-situ pyrolysis of oil-rich coal, the waste heat recovery and utilization device for in-situ pyrolysis of oil-rich coal comprising:

[0007] A heat exchanger shell, wherein a heat exchange coil is fixedly arranged in the inner cavity of the heat exchanger shell, and the heat exchange coil is used to recover waste heat from the high-temperature gas produced by pyrolysis;

[0008] A gas flow rate conversion component, the gas flow rate conversion component is arranged at the heat exchange coil, and the gas flow rate conversion component is used to sense the flow rate of the high-temperature gas;

[0009] A linkage component, the linkage component is fixedly arranged on the outer wall of the heat exchanger shell, the linkage component is connected to the gas flow rate conversion component, the linkage component is connected to the flow control unit, the flow control unit is fixedly arranged at the output end of the heat exchange coil, and the flow control unit is used to automatically reduce the flow rate when the high-temperature gas flows at a high speed;

[0010] A buffer component is fixedly arranged at the heat exchange coil and is used for temporarily storing high-temperature gas.

[0011] Furthermore, the heat exchanger shell includes a shell, a cooling water inlet and a cooling water outlet. The cooling water inlet is provided on one side of the shell, and the cooling water outlet is provided on the other side of the shell. A heat exchange coil is fixedly provided in the inner cavity of the shell, and both ends of the heat exchange coil extend outside the wall of the shell.

[0012] Furthermore, the gas flow rate conversion assembly includes a circular fixed shell, a rotating shaft, a rotating wheel, a wind wheel blade, an input end and an output end. The input end is arranged at the upper side of the circular fixed shell, and the output end is arranged at the lower side of the circular fixed shell. Both the input end and the output end are connected to the heat exchange coil.

[0013] Furthermore, a rotating shaft is rotatably connected at the center position of the inner cavity wall of the circular fixed shell, a rotating wheel is fixedly connected at the arc wall of the rotating shaft, a plurality of wind wheel blades are fixedly connected at the arc wall of the rotating wheel, and the plurality of wind wheel blades are equidistantly fixed at the arc wall of the rotating wheel.

[0014] Furthermore, the linkage assembly includes a connecting shaft, a rotating disk, a connecting pin, a swing block, a contact wheel, a connecting spring, a guide push rod, a connecting tripod, a crank, an arc plate and a rubber bag. The connecting shaft is arranged at the outer wall of the shell and is rotatably connected to the shell. One end of the connecting shaft is fixedly connected to one end of the rotating shaft. The connecting shaft is fixedly connected to the rotating disk. A plurality of grooves are provided on the side of the rotating disk. The swing block is rotatably connected to the groove position on the side of the rotating disk through a connecting pin.

[0015] Furthermore, one end of a connecting spring is fixedly provided on the inner wall of the swing block, the other end of the connecting spring is fixedly connected to the rotating disk, one end of the swing block is rotatably connected to a contact wheel, a fixed tripod is fixedly provided on the outer wall of the shell, a positioning plate is fixedly connected to the fixed tripod, both ends of the positioning plate are slidably connected to guide rods, an arc plate is fixedly connected between one ends of the two guide rods, and the arc-shaped inner wall of the arc plate is in contact with the contact wheel.

[0016] Furthermore, one end of a return spring is fixedly connected to the side wall of the positioning plate, and the other end of the return spring is fixedly connected to the arc wall of the arc plate, a connecting plate is fixedly connected to one end of the guide rod, one end of the guide push rod is fixedly connected to the side wall of the connecting plate, and the other end of the guide push rod is fixedly connected to a connecting frame, the connecting bracket is arranged on one side outer wall of the shell and is fixedly connected to the shell, a crank is rotatably connected to one end of the crank, one end of the connecting rod is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the connecting frame, a pressure plate is fixedly provided at the other end of the crank, a rubber bag is fixedly connected to the side wall of the pressure plate, and the rubber bag is fixedly connected to the side wall of the shell.

[0017] Furthermore, the flow control part includes a fixed valve body, an annular rubber airbag and a connecting air pipe. The fixed valve body is fixedly connected at the output end of the heat exchange coil, an annular rubber airbag is fixedly arranged inside the cavity of the fixed valve body, one end of the connecting air pipe is fixedly connected to the inner cavity of the annular rubber airbag, and the other end of the connecting air pipe extends into the inner cavity of the rubber bag and is fixedly connected to the rubber bag.

[0018] Furthermore, the buffer assembly includes a fixed circular shell, a connecting pipe, a gas collecting cylinder, a movable piston, a guide rod, a connecting circular plate and a spring. One end of the connecting pipe is fixedly connected to the bottom side of the inner cavity of the fixed circular shell, and the other end of the connecting pipe is fixedly connected to the heat exchange coil.

[0019] Furthermore, a plurality of gas collecting cylinders are fixedly arranged on the upper wall of the fixed circular shell, and the inner cavity of the gas collecting cylinders is communicated with the inner cavity of the fixed circular shell. A movable piston is slidably connected in the inner cavity of the gas collecting cylinder, and one end of a guide rod is fixedly connected to the upper surface of the movable piston, and the other end of the guide rod passes through the upper wall of the inner cavity of the gas collecting cylinder and extends outside the wall. A connecting circular plate is fixedly connected to the top of the guide rod, and one end of a spring is fixedly connected to the bottom surface of the connecting circular plate, and the other end of the spring is fixedly connected to the upper surface of the fixed circular shell.

[0020] Through the above embodiments of the present application, in order to solve the problem in the prior art that when ordinary waste heat recovery equipment recovers waste heat from high-temperature gas products of in-situ pyrolysis of oil-rich coal, the output rate of the high-temperature gas is constantly changing. When the output rate increases, the heat exchange area is fixed, and the flow rate changes increase, which is prone to insufficient heat exchange and insufficient waste heat recovery. The present application designs a gas flow rate conversion component, a linkage component and a flow control unit. Through the coordinated use of the gas flow rate conversion component, the linkage component and the flow control unit, when the high-temperature gas flow rate is too fast, the output speed of the heat exchange coil can be automatically adjusted to avoid the problem of insufficient heat exchange caused by too fast output gas flow rate, thereby improving the waste heat recovery effect. Furthermore, the present application designs a buffer component. Through the setting of the buffer component, when the gas flow rate at the input end is too fast, the high-temperature gas will enter the buffer component for temporary storage, so that the high-temperature gas can fully stay in the cooling water for heat exchange, thereby avoiding the technical problem of insufficient heat exchange caused by too fast high-temperature gas flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the internal structure of a heat exchanger housing according to an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the internal structure of a gas flow rate conversion component according to an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a linkage component according to an embodiment of the present application;

[0026] Figure 5 For an embodiment of the present application Figure 4 A schematic diagram of the structure of the local enlargement of the A;

[0027] Figure 6 This is a schematic diagram of the connection structure of a rubber bag according to an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of the structure of a flow control unit according to an embodiment of the present application;

[0029] Figure 8This is a schematic structural diagram of a buffer assembly according to an embodiment of the present application;

[0030] Fig. 9 This is a schematic diagram of the internal structure of a gas collecting cylinder according to an embodiment of the present application;

[0031] Fig.10 This is a schematic diagram of the structure of a spring according to an embodiment of the present application.

[0032] In the figure:

[0033] Heat exchanger housing 1, shell 101, cooling water inlet 102, cooling water outlet 103;

[0034] Heat exchange coil 2;

[0035] Flow control unit 3, fixed valve body 301, annular rubber airbag 302, connecting air pipe 303;

[0036] Gas flow rate conversion component 4, circular fixed shell 401, rotating shaft 402, rotating wheel 403, wind wheel blade 404, input end 405, output end 406;

[0037] Linkage assembly 5, connecting shaft 501, rotating disk 502, connecting pin 503, swing block 504, contact wheel 505, connecting spring 506, fixed tripod 507, positioning plate 508, return spring 509, guide rod 510, connecting plate 511, guide push rod 512, connecting frame 513, connecting tripod 514, crank 515, connecting rod 516, pressing plate 517, rubber bag 518, arc plate 519;

[0038] Buffer assembly 6, fixed circular shell 601, connecting pipe 602, gas collecting cylinder 603, movable piston 604, guide rod 605, connecting circular plate 606, spring 607. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0042] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0043] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] See also Figure 1-2 As shown, the waste heat recovery and utilization equipment of in-situ pyrolysis of oil-rich coal, the waste heat recovery and utilization equipment of in-situ pyrolysis of oil-rich coal comprises:

[0045] A heat exchanger shell 1, wherein a heat exchange coil 2 is fixedly disposed in the inner cavity of the heat exchanger shell 1, and the heat exchange coil 2 is used to recover waste heat from high-temperature gas produced by pyrolysis;

[0046] A gas flow rate conversion component 4, wherein the gas flow rate conversion component 4 is arranged at the heat exchange coil 2, and the gas flow rate conversion component 4 is used to sense the flow rate of the high-temperature gas;

[0047] A linkage component 5, wherein the linkage component 5 is fixedly arranged at the outer wall of the heat exchanger housing 1, the linkage component 5 is connected to the gas flow rate conversion component 4, and the linkage component 5 is connected to the flow control unit 3, the flow control unit 3 is fixedly arranged at the output end of the heat exchange coil 2, and the flow control unit 3 is used to automatically reduce the flow rate when the high-temperature gas flows at a high speed;

[0048] A buffer component 6, wherein the buffer component 6 is fixedly arranged at the heat exchange coil 2, and the buffer component 6 is used for temporarily storing high-temperature gas;

[0049] Through the above technical scheme, through the coordinated use of the gas flow rate conversion component 4, the linkage component 5 and the flow control unit 3, when the high-temperature gas flow rate is too fast, the output speed of the heat exchange coil 2 can be automatically adjusted to avoid the problem of insufficient heat exchange caused by the excessive output gas flow rate, and improve the waste heat recovery effect. Further, the present application designs a buffer component 6. Through the setting of the buffer component 6, when the gas flow rate at the input end is too fast, the high-temperature gas will enter the buffer component for temporary storage, so that the high-temperature gas can fully stay in the cooling water for heat exchange, avoiding the technical problem of insufficient heat exchange caused by the excessive high-temperature gas flow rate.

[0050] For further technical solutions, see Figure 2 and Figure 3 As shown, the heat exchanger shell 1 includes a shell 101, a cooling water inlet 102 and a cooling water outlet 103. The cooling water inlet 102 is provided at one side of the shell 101, and the cooling water outlet 103 is provided at the other side of the shell 101. A heat exchange coil 2 is fixedly provided in the inner cavity of the shell 101, and both ends of the heat exchange coil 2 extend to the outside of the wall of the shell 101. Through the technical solution, the high-temperature gas generated by the in-situ pyrolysis of the oil-rich coal is input into the heat exchange coil 2 through the left input end of the heat exchange coil 2, and flows in the inner cavity of the heat exchange coil 2. At the same time, cold water is input into the inner cavity of the shell 101 through the cooling water inlet 102. The high-temperature gas exchanges heat with the cold water through the heat exchange coil 2, thereby heating the cold water and cooling the high-temperature gas, thereby realizing the function of recovering the waste heat of the high-temperature gas. The heated water is output through the cooling water outlet 103, and the cooled gas is output through the right output end of the heat exchange coil 2.

[0051] The gas flow rate conversion assembly 4 includes a circular fixed shell 401, a rotating shaft 402, a rotating wheel 403, a wind wheel blade 404, an input end 405 and an output end 406. The input end 405 is arranged at the upper side of the circular fixed shell 401, and the output end 406 is arranged at the lower side of the circular fixed shell 401. The input end 405 and the output end 406 are both connected to the heat exchange coil 2. Through the technical solution, when the high-temperature gas is transported and moved through the heat exchange coil 2, the gas will flow through the circular fixed shell 401;

[0052] A rotating shaft 402 is rotatably connected to the center position of the inner cavity wall of the circular fixed shell 401, a rotating wheel 403 is fixedly connected to the arc-shaped wall of the rotating shaft 402, and a plurality of wind wheel blades 404 are fixedly connected to the arc-shaped wall of the rotating wheel 403. The wind wheel blades 404 are equidistantly fixed to the arc-shaped wall of the rotating wheel 403. Through the present technical solution, when the high-temperature gas product of in-situ pyrolysis of oil-rich coal flows through the heat exchange coil 2, the flowing high-temperature gas will push the wind wheel blades 404 to move, thereby driving the rotating wheel 403 to rotate, and then the rotation of the rotating wheel 403 can drive the rotating shaft 402 to rotate. The faster the high-temperature gas flow rate is, the faster the wind wheel blades 404 are driven to rotate, thereby making the rotating shaft 402 rotate faster. Through the above technical solution, through the setting of the gas flow rate conversion component 4, when the high-temperature gas flow rate changes, the rotating shaft 402 can also make a corresponding speed change.

[0053] For specific technical solutions, please refer to Figure 4 Figure 5 and Figure 6 As shown, the linkage assembly 5 includes a connecting shaft 501, a rotating disk 502, a connecting pin 503, a swing block 504, a contact wheel 505, a connecting spring 506, a guide push rod 512, a connecting tripod 514, a crank 515, an arc plate 519 and a rubber bag 518. The connecting shaft 501 is arranged on the outer wall of the shell 101 and is rotatably connected to the shell 101. One end of the connecting shaft 501 is fixedly connected to one end of the rotating shaft 402. The rotating disk 502 is fixedly connected to the connecting shaft 501. The side of the rotating disk 502 is A plurality of grooves are provided, and a swing block 504 is rotatably connected to the groove position of the side of the rotating disk 502 through a connecting pin 503. According to the technical solution, when the high-temperature gas is exchanging heat, the flowing gas can push the wind wheel blades 404 to move, thereby driving the rotating shaft 402 to rotate. The rotation of the rotating shaft 402 can drive the connecting shaft 501 to rotate, thereby driving the rotating disk 502 to rotate. The rotation of the rotating disk 502 can drive the swing block 504 to rotate, and due to the action of the centrifugal force, the swing block 504 is offset outward.

[0054] One end of a connecting spring 506 is fixedly provided on the inner wall of the swing block 504, and the other end of the connecting spring 506 is fixedly connected to the rotating disk 502. A contact wheel 505 is rotatably connected to one end of the swing block 504. A fixed tripod 507 is fixedly provided on the outer wall of the shell 101. A positioning plate 508 is fixedly connected to the fixed tripod 507. Guide rods 510 are slidably connected to both ends of the positioning plate 508. An arc plate 519 is fixedly connected between one end of the two guide rods 510. The arc-shaped inner wall of the arc plate 519 contacts the contact wheel 505. Through the technical solution, when the rotating disk 502 rotates, it can bring The movable swing block 504 is offset, thereby driving the contact wheel 505 to be offset, and the offset of the contact wheel 505 can push the arc plate 519 to move, and when the high-temperature gas flow rate increases, the rotation speed of the rotating shaft 402 will increase, thereby increasing the rotation speed of the connecting shaft 501, so that the rotation speed of the rotating disk 502 increases, and because the rotation speed of the rotating disk 502 increases, the deflection distance of the swing block 504 increases, thereby increasing the offset distance of the contact wheel 505, thereby pushing the arc plate 519 to move a greater distance. It can be seen from the above description that when the high-temperature gas flow rate increases, the moving distance of the arc plate 519 will increase;

[0055] One end of a return spring 509 is fixedly connected to the side wall of the positioning plate 508, and the other end of the return spring 509 is fixedly connected to the arc wall of the arc plate 519. A connecting plate 511 is fixedly connected between one end of the guide rod 510, and one end of a guide push rod 512 is fixedly connected to the side wall of the connecting plate 511, and the other end of the guide push rod 512 is fixedly connected to a connecting frame 513. The connecting bracket 514 is arranged on one side outer wall of the shell 101 and is fixedly connected to the shell 101. A crank 515 is rotatably connected to the connecting bracket 514, and one end of the crank 515 is rotatably connected to one end of a connecting rod 516, and the other end of the connecting rod 516 is rotatably connected to the shell 101. The connecting frame 513 is rotatably connected, and a pressure plate 517 is fixedly provided at the other end of the crank 515. A rubber bag 518 is fixedly connected to the side wall of the pressure plate 517. The rubber bag 518 is fixedly connected to the side wall of the shell 101. Through the present technical solution, when the guide push rod 512 moves, it can drive the connecting rod 516 to make an angular rotation, thereby driving the crank 515 to make an angular rotation, thereby driving the pressure plate 517 to rotate and press down, compressing the rubber bag 518, and when the rotation speed of the rotating disk 502 increases, the moving distance of the guide push rod 512 can be increased, thereby increasing the deflection and pressing distance of the pressure plate 517, so that the rubber bag 518 is continuously compressed.

[0056] As a preferred technical solution, please refer to Figure 7As shown, the flow control unit 3 includes a fixed valve body 301, an annular rubber airbag 302 and a connecting air pipe 303. The fixed valve body 301 is fixedly connected at the output end of the heat exchange coil 2. The annular rubber airbag 302 is fixedly arranged inside the cavity of the fixed valve body 301. One end of the connecting air pipe 303 is fixedly connected to the inner cavity of the annular rubber airbag 302. The other end of the connecting air pipe 303 extends into the inner cavity of the rubber bag 518 and is fixedly connected to the rubber bag 518. Through the technical solution, when the rubber bag 518 is compressed, the gas in the inner cavity of the rubber bag 518 can be transported to the inner cavity of the annular rubber airbag 302 through the connecting air pipe 303, thereby causing the annular rubber airbag 302 to expand. Through the expansion of the annular rubber airbag 302, the inner diameter of the fixed valve body 301 is reduced, thereby controlling the output rate of the high-temperature gas, thereby realizing the function of dynamic control, avoiding the problem of insufficient heat exchange caused by too fast output air flow rate, and improving the recovery effect of waste heat.

[0057] For further technical solutions, see Figure 8 Fig. 9 and Fig.10 As shown, the buffer assembly 6 includes a fixed round shell 601, a connecting pipe 602, a gas collecting cylinder 603, a movable piston 604, a guide rod 605, a connecting round plate 606 and a spring 607. One end of the connecting pipe 602 is fixedly connected to the bottom side of the inner cavity of the fixed round shell 601, and the other end of the connecting pipe 602 is fixedly connected to the heat exchange coil 2.

[0058] A plurality of gas collecting cylinders 603 are fixedly arranged on the upper wall of the fixed circular shell 601, and the inner cavity of the gas collecting cylinder 603 is communicated with the inner cavity of the fixed circular shell 601, and a movable piston 604 is slidably connected in the inner cavity of the gas collecting cylinder 603, and one end of a guide rod 605 is fixedly connected to the upper surface of the movable piston 604, and the other end of the guide rod 605 penetrates the upper wall of the inner cavity of the gas collecting cylinder 603 and extends outside the wall, and a connecting circular plate 606 is fixedly connected to the top of the guide rod 605, and one end of a spring 607 is fixedly connected to the bottom surface of the connecting circular plate 606, and the other end of the spring 607 is fixedly connected to the upper surface of the fixed circular shell 601. Through the technical solution, when high-temperature gas is input at a high speed into the exchange After entering the heat coil 2, the output speed will be reduced through the coordinated use of the gas flow rate conversion component 4, the linkage component 5 and the flow control unit 3, so that the high-temperature gas cannot be output quickly. The high-temperature gas that cannot be output will enter the inner cavity of the fixed circular shell 601, and then enter the inner cavity of the gas collecting cylinder 603 for temporary storage. The entry of gas causes the movable piston 604 to move upward, so that the gas is temporarily stored in the inner cavity of the gas collecting cylinder 603, and then the gas can stay in the cooling water for a longer time, and fully exchange heat with the cooling water, thereby improving the effect of heat exchange, and effectively avoiding the problem of insufficient heat exchange between the high-temperature gas and the cold water due to the fast flow rate of the high-temperature gas, thereby making the waste heat recovery more sufficient and thorough.

[0059] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software and methods.

[0060] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Waste heat recovery equipment for in-situ pyrolysis of oil-rich coal, characterized by: The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal comprises: A heat exchanger shell (1), wherein a heat exchange coil (2) is fixedly arranged in the inner cavity of the heat exchanger shell (1), and the heat exchange coil (2) is used to recover waste heat from high-temperature gas produced by pyrolysis; A gas flow rate conversion component (4), the gas flow rate conversion component (4) being arranged at the heat exchange coil (2), the gas flow rate conversion component (4) being used to sense the flow rate of the high-temperature gas; A linkage component (5), the linkage component (5) is fixedly arranged on the outer wall of the heat exchanger housing (1), the linkage component (5) is connected to the gas flow rate conversion component (4), the linkage component (5) is connected to the flow control unit (3), the flow control unit (3) is fixedly arranged at the output end of the heat exchange coil (2), and the flow control unit (3) is used to automatically reduce the flow rate when the high-temperature gas flows at a high speed; A buffer component (6), wherein the buffer component (6) is fixedly arranged at the heat exchange coil (2), and the buffer component (6) is used for temporarily storing high-temperature gas.

2. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 1 is characterized in that: The heat exchanger shell (1) comprises a shell (101), a cooling water inlet (102) and a cooling water outlet (103); the cooling water inlet (102) is provided on one side of the shell (101), and the cooling water outlet (103) is provided on the other side of the shell (101); a heat exchange coil (2) is fixedly provided in the inner cavity of the shell (101), and both ends of the heat exchange coil (2) extend outside the wall of the shell (101).

3. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 1 is characterized in that: The gas flow rate conversion component (4) comprises a circular fixed shell (401), a rotating shaft (402), a rotating wheel (403), a wind wheel blade (404), an input end (405) and an output end (406); the input end (405) is arranged at the upper side of the circular fixed shell (401), and the output end (406) is arranged at the lower side of the circular fixed shell (401); the input end (405) and the output end (406) are both connected to the heat exchange coil (2).

4. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 3 is characterized in that: A rotating shaft (402) is rotatably connected at the center of the inner cavity wall of the circular fixed shell (401), a rotating wheel (403) is fixedly connected at the arc-shaped wall of the rotating shaft (402), a plurality of wind wheel blades (404) are fixedly connected at the arc-shaped wall of the rotating wheel (403), and the plurality of wind wheel blades (404) are equidistantly fixed at the arc-shaped wall of the rotating wheel (403).

5. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 1 is characterized in that: The linkage assembly (5) comprises a connecting shaft (501), a rotating disk (502), a connecting pin (503), a swing block (504), a contact wheel (505), a connecting spring (506), a guide push rod (512), a connecting tripod (514), a crank (515), an arc plate (519) and a rubber bag (518); the connecting shaft (501) is arranged on the outer wall of the housing (101) and is rotatably connected to the housing (101); one end of the connecting shaft (501) is fixedly connected to one end of the rotating shaft (402); the connecting shaft (501) is fixedly connected to the rotating disk (502); a plurality of grooves are provided on the side of the rotating disk (502); and the swing block (504) is rotatably connected to the groove position on the side of the rotating disk (502) via the connecting pin (503).

6. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 5, characterized in that: One end of a connecting spring (506) is fixedly provided on the inner wall of the swing block (504), and the other end of the connecting spring (506) is fixedly connected to the rotating disk (502). One end of the swing block (504) is rotatably connected to a contact wheel (505). A fixed tripod (507) is fixedly provided on the outer wall of the shell (101), and a positioning plate (508) is fixedly connected to the fixed tripod (507). Guide rods (510) are slidably connected to both ends of the positioning plate (508). An arc plate (519) is fixedly connected between one ends of the two guide rods (510), and the arc-shaped inner wall of the arc plate (519) is in contact with the contact wheel (505).

7. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 6, characterized in that: One end of a return spring (509) is fixedly connected to the side wall of the positioning plate (508), and the other end of the return spring (509) is fixedly connected to the arc wall of the arc plate (519). A connecting plate (511) is fixedly connected to one end of the guide rod (510), and one end of a guide push rod (512) is fixedly connected to the side wall of the connecting plate (511). The other end of the guide push rod (512) is fixedly connected to a connecting frame (513), and the connecting frame (514) is arranged on an outer wall of one side of the housing (101). The connecting bracket (514) is rotatably connected to a crank (515), one end of the crank (515) is rotatably connected to one end of a connecting rod (516), the other end of the connecting rod (516) is rotatably connected to the connecting bracket (513), a pressing plate (517) is fixedly provided at the other end of the crank (515), a rubber bag (518) is fixedly connected to the side wall of the pressing plate (517), and the rubber bag (518) is fixedly connected to the side wall of the housing (101).

8. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 1, characterized in that: The flow control unit (3) comprises a fixed valve body (301), an annular rubber airbag (302) and a connecting air pipe (303); the fixed valve body (301) is fixedly connected at the output end of the heat exchange coil (2); an annular rubber airbag (302) is fixedly arranged inside the cavity of the fixed valve body (301); one end of the connecting air pipe (303) is fixedly connected to the inner cavity of the annular rubber airbag (302); the other end of the connecting air pipe (303) extends into the inner cavity of the rubber bag (518) and is fixedly connected to the rubber bag (518).

9. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 1, characterized in that: The buffer assembly (6) comprises a fixed circular shell (601), a connecting pipe (602), a gas collecting cylinder (603), a movable piston (604), a guide rod (605), a connecting circular plate (606) and a spring (607); one end of the connecting pipe (602) is fixedly connected to the bottom side of the inner cavity of the fixed circular shell (601); and the other end of the connecting pipe (602) is fixedly connected to the heat exchange coil (2).

10. The waste heat recovery and utilization equipment for in-situ pyrolysis of oil-rich coal according to claim 9, characterized in that: A plurality of gas collecting cylinders (603) are fixedly arranged on the upper wall of the fixed circular shell (601); the inner cavity of the gas collecting cylinder (603) is communicated with the inner cavity of the fixed circular shell (601); a movable piston (604) is slidably connected in the inner cavity of the gas collecting cylinder (603); one end of a guide rod (605) is fixedly connected to the upper surface of the movable piston (604); the other end of the guide rod (605) passes through the upper wall of the inner cavity of the gas collecting cylinder (603) and extends outside the wall; a connecting circular plate (606) is fixedly connected to the top of the guide rod (605); one end of a spring (607) is fixedly connected to the bottom surface of the connecting circular plate (606); the other end of the spring (607) is fixedly connected to the upper surface of the fixed circular shell (601).

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