Pressure relief device for coal-based fuel processing hydrogenation reactor

Abstract

The utility model relates to a kind of pressure relief device of hydrogenation reactor for coal-based fuel processing, including the sleeve pipe connected to hydrogenation reactor, the sleeve pipe is equipped with the channel that penetrates, the outer side of the pipe sleeve is equipped with the pressure relief pipe that is communicated with channel, the channel is equipped with piston, the piston is opened or closed by sliding along channel to pressure relief pipe, it is characterized in that, the channel is equipped with pressure relief spring and limiting component, the limiting component is used to extrude pressure relief spring, the sleeve pipe top end is equipped with gland, the sleeve pipe outer periphery is equipped with locking sleeve, the locking sleeve is locked or released by moving along sleeve pipe axis direction, to cover gland.The utility model has the following advantages and effects: it can be convenient for the replacement of internal pressure relief spring.

Description

Technical Field

[0001] This utility model relates to the field of coal-based fuel processing technology, specifically to a pressure relief device for a hydrogenation reactor used in coal-based fuel processing. Background Technology

[0002] Coal-based liquid fuel processing is the process of converting solid coal into liquid fuels (such as gasoline, diesel, jet fuel, naphtha, etc.). During processing, coal slurry needs to be mixed with high-pressure hydrogen, heated, and then added to a hydrogenation reactor. Under high temperature, high pressure, and the action of a catalyst, it is converted into liquid and gaseous products.

[0003] Since gases are produced in the product, a pressure relief device needs to be installed to prevent flash explosions caused by excessive gas pressure inside the hydrogenation reactor, in order to ensure the stability of the overall equipment operation.

[0004] A search revealed Chinese patent document CN221334036U, which discloses a pressure relief device for a hydrogenation reactor, including a hydrogenation reactor and a pressure relief mechanism disposed on top of the hydrogenation reactor for pressure relief treatment; and a disassembly assembly installed on top of the pressure relief mechanism.

[0005] In the above technical solution, by setting an installation block and a limiting block, when the operator rotates bolt one, it causes bolt one to move out of the connecting ring, thus releasing it from the fixing of the top cover. Then, due to the elastic force of the spring, the installation block is moved out of the connecting ring, making it easy to pull the installation block and spring out of the connecting ring for replacement. This facilitates the operator to replace the spring regularly, preventing spring fatigue that could lead to pressure release before the set pressure range is reached, thus avoiding affecting the reaction in the hydrogenation reactor.

[0006] However, in actual use, it was found that the top cover needs to be disassembled and reassembled by repeatedly turning the bolts, which still causes some inconvenience when replacing the internal springs. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure relief device for a hydrogenation reactor for coal-based fuel processing, which facilitates the replacement of the internal pressure relief spring.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pressure relief device for a hydrogenation reactor used in coal-based fuel processing, comprising a sleeve connected to the hydrogenation reactor, a through channel provided inside the sleeve, a pressure relief pipe communicating with the channel on the outside of the sleeve, a piston provided inside the channel, the piston opening or closing the pressure relief pipe by sliding along the channel, a pressure relief spring and a limiting component provided inside the channel, the limiting component being used to compress the pressure relief spring, a pressure cap provided at the top of the sleeve, and a locking sleeve fitted around the outer periphery of the sleeve, the locking sleeve locking or releasing the pressure cap by moving along the axial direction of the sleeve.

[0009] The present invention is further configured such that: the sleeve has a through groove on its peripheral wall, the through groove being multiple and evenly distributed around the circumference, a locking steel ball is provided in the through groove, the through groove being located on the outer and inner sides of the sleeve to form an installation end and a limiting end respectively, the inner diameter of the installation end being not less than the inner diameter of the locking steel ball, and the inner diameter of the limiting end being not greater than the inner diameter of the locking steel ball, so as to limit the locking steel ball; the bottom of the pressure cap is provided with an extension tube extending into the channel, the peripheral wall of the extension tube being provided with an alignment groove that can be opposite to or offset from the through groove, so that the locking steel ball can be pressed into or released from the alignment groove, thereby locking or releasing the pressure cap.

[0010] The present invention is further configured such that: the outer periphery of the sleeve is provided with an installation step, the inner side of the locking sleeve is provided with a protruding pressing part, the pressing part moves along the axial direction of the sleeve through the locking sleeve to be opposite to or offset from the through groove, an installation cavity is formed between the pressing part and the installation step, a locking spring is provided in the installation cavity, one end of the locking spring is fixed to the installation step, and the other end is fixed to the pressing part, the locking spring is used to keep the pressing part in a position opposite to the through groove.

[0011] The present invention is further configured such that: the limiting component includes a bottom limiting block disposed near the piston and a top limiting block disposed near the pressure cap; a connecting rod is provided between the bottom limiting block and the piston; and the bottom limiting block and the top limiting block can respectively contact the two ends of the pressure relief spring to compress the pressure relief spring.

[0012] The present invention is further configured such that: the top of the pressure cap is provided with a connecting hole, and an adjusting rod is provided in the connecting hole. The adjusting rod can form a threaded engagement with the connecting hole. One end of the adjusting rod is connected to the top limiting block, and the other end is provided with an internal hexagonal groove. The adjusting rod can rotate to drive the top limiting block to move along the channel axis to adjust the pre-compression amplitude of the pressure relief spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] Because of the sliding locking sleeve and the detachable pressure cap on the sleeve, when it is necessary to replace the pressure relief spring in the channel, simply sliding the locking sleeve can lock or release the pressure cap, thereby improving the convenience of pressure cap disassembly and assembly, and thus improving the convenience of pressure relief spring replacement. Therefore, it effectively solves the technical problem in the prior art that the disassembly and assembly of the pressure cap is cumbersome due to the need to repeatedly rotate the bolts. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a partial structural diagram of the sleeve in this utility model;

[0018] Figure 4 This is a partially enlarged structural diagram of part A of this utility model. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4 As shown, this utility model discloses a pressure relief device for a hydrogenation reactor for coal-based fuel processing, including a sleeve 3 connected to a hydrogenation reactor 100, wherein the bottom of the sleeve 3 and the hydrogenation reactor 100 are provided with corresponding threaded holes, and a rubber sealing sleeve 200 is provided between the sleeve 3 and the hydrogenation reactor 100, wherein the rubber sealing sleeve 200 is provided with a clearance hole opposite to the threaded hole. When connected to the hydrogenation reactor 100, the rubber sealing sleeve 200 is fitted onto the outer circumference of the connecting pipe, and the sleeve 3 can be fixed to the hydrogenation reactor 100 by screwing in a screw 300 that forms a threaded fit with the threaded hole.

[0022] The sleeve 3 has a through channel 31 inside, and a pressure relief pipe 1 communicating with the channel 31 is provided on the outside of the sleeve. A piston 4 is provided inside the channel 31. The piston 4 opens or closes the pressure relief pipe 1 by sliding along the channel 31. A pressure relief spring 5 and a limiting assembly are provided inside the channel 31. The limiting assembly is used to compress the pressure relief spring 5. A pressure cap 6 is provided at the top of the sleeve 3. When the pressure inside the hydrogenation reactor 100 exceeds the limit value, that is, the pressure of the pressure relief spring 5, the pressure inside the hydrogenation reactor 100 can push the piston 4 toward the pressure relief spring. As piston 4 moves, piston 4 and pressure relief pipe 1 can gradually be misaligned to open pressure relief pipe 1, thus allowing pressure relief. During the movement of piston 4, pressure relief spring 5 can be gradually squeezed by limiting component. When the pressure in hydrogenation reactor 100 is reduced to less than the pressure of pressure relief spring 5, the compressed pressure relief spring 5 can be reset to push piston 4 to move away from pressure relief spring 5, so that piston 4 and pressure relief pipe 1 can gradually be relative to each other to close pressure relief pipe 1.

[0023] Furthermore, the pressure cap 6 can be disassembled to open or close the channel 31, thereby allowing the pressure relief spring 5 inside the channel 31 to be replaced. A locking sleeve 7 is fitted around the outer periphery of the sleeve 3. The locking sleeve 7 can lock or release the pressure cap 6 by moving along the axis of the sleeve 3. Thus, when disassembling or assembling the pressure cap 6, it is only necessary to slide the locking sleeve 7 to lock or release the pressure cap 6, which improves the convenience of disassembling and assembling the pressure cap 6 and facilitates the replacement of the internal pressure relief spring 5.

[0024] In this embodiment, the locking sleeve 7 locks or releases the pressure cap 6 by sliding. A through groove 32 is provided on the circumferential wall of the sleeve 3. Multiple through grooves 32 are evenly distributed circumferentially. A locking steel ball 2 is provided within each through groove 32. The through groove 32 forms an installation end and a limiting end on the outer and inner sides of the sleeve 3, respectively. The inner diameter of the installation end is not less than the inner diameter of the locking steel ball 2, and the inner diameter of the limiting end is not greater than the inner diameter of the locking steel ball 2. Thus, during assembly, the locking steel ball 2 can be pushed into the through groove 32 from the outside of the sleeve 3. The limiting end limits the locking steel ball 2, preventing it from falling into the through groove 32 when it partially extends into it. The pressure cap 6 has an extension tube 61 extending towards the channel 31 at its bottom. The circumferential wall of the extension tube 61 has an alignment groove 611 that can be opposite or offset from the through groove 32, allowing the locking steel ball 2 to be pressed into or released from the alignment groove 611, thereby locking or releasing the pressure cap 6.

[0025] In addition, the outer periphery of the sleeve 3 is provided with an installation step 33, and the inner side of the locking sleeve 7 is provided with a protruding pressing part 71. The pressing part 71 moves along the axial direction of the sleeve 3 through the locking sleeve 7 to be opposite to or offset from the through groove 32. An installation cavity 8 is formed between the pressing part 71 and the installation step 33. A locking spring 10 is provided in the installation cavity 8. One end of the locking spring 10 is fixed to the installation step 33, and the other end is fixed to the pressing part 71. The locking spring 10 is used to keep the pressing part 71 in a position relative to the through groove 32.

[0026] When the pressure cap 6 needs to be installed on the sleeve 3, the locking sleeve 7 is slid downward to compress the locking spring 10, so that the top pressing part 71 can be misaligned with the through groove 32, allowing the locking sleeve 7 to stop compressing the locking steel ball 2. At this time, the extension tube 61 of the pressure cap 6 can be normally inserted into the channel 31 of the sleeve 3. When the alignment groove 611 is aligned with the through groove 32, the locking sleeve 7 is released. At this time, the compressed locking spring 10 can drive the locking sleeve 7 to reset, so that the top pressing part 71 is aligned with the through groove 32, thereby stopping the compression of the locking steel ball 2. The locking steel ball 2 is squeezed, so that the part of the locking steel ball 2 extending into the through groove 32 can press against the alignment groove 611 to limit the extension tube 61, thereby fixing the cover 6. Similarly, when the cover 6 needs to be removed, the locking sleeve 7 is slid down so that the pressing part 71 can be misaligned with the through groove 32, and the extension tube 61 can be pulled out from the channel 31 to complete the removal of the cover 6. In this way, the cover 6 can be locked or released by sliding the locking sleeve 7, thereby improving the convenience of removing and installing the cover 6.

[0027] In this embodiment, the specific structure of the limiting component includes a bottom limiting block 91 located near the piston 4 and a top limiting block 92 located near the pressure cap 6. The top limiting block 92 is connected to the pressure cap 6. A connecting rod 93 is provided between the bottom limiting block 91 and the piston 4. The piston 4 is provided with a slot corresponding to the connecting rod 93. The connecting rod 93 is inserted into the slot and fixed by the friction generated between the two. Glue can also be dripped into the slot to improve the connection stability. In this way, the bottom limiting block 91 can move within the channel 31 following the movement of the piston 4. The bottom limiting block 91 and the top limiting block 92 can contact the two ends of the pressure relief spring 5 respectively to compress the pressure relief spring 5.

[0028] In this embodiment, the connection structure between the top limiting block 92 and the pressure cap 6 is as follows: a connecting hole is provided on the top of the pressure cap 6, and an adjusting rod 11 is provided in the connecting hole. The adjusting rod 11 can form a threaded engagement with the connecting hole. One end of the adjusting rod 11 is welded and fixed to the top limiting block 92, and the other end is provided with an internal hexagonal groove 111. With the setting of the internal hexagonal groove 111, when it is necessary to rotate the adjusting rod 11, a suitable internal hexagonal wrench can be inserted to turn the adjusting rod 11, so as to drive the adjusting rod 11 to rotate. After the adjusting rod 11 rotates, it can drive the top limiting block 92 to move in the direction toward the pressure relief spring 5, thereby squeezing the pressure relief spring 5 to adjust the pre-compression amplitude of the pressure relief spring 5, and thus realize the adjustment of the threshold pressure in the hydrogenation reactor 100.

[0029] The specific implementation process of this plan is as follows:

[0030] When it is necessary to replace the pressure relief spring 5 in channel 31, first slide the locking sleeve 7 downwards so that the locking ball 2 can disengage from the alignment groove 611. At this time, the extension tube 61 can be pulled out from the channel 31 to remove the pressure cap 6. The channel 31 can then be opened, allowing the pressure relief spring 5 to be removed and replaced. After replacing the pressure relief spring 5, slide the locking sleeve 7 downwards again so that the locking ball 2 can disengage from the alignment groove 611. At this time, the extension tube 61 of the pressure cap 6 can be normally inserted into the channel 31 of the sleeve 3. After insertion into place... By releasing the locking sleeve 7, the compressed locking spring 10 can drive the locking sleeve 7 to reset, so that the top pressing part 71 is opposite to the through groove 32 to compress the locking steel ball 2. This allows the part of the locking steel ball 2 extending into the through groove 32 to press against the alignment groove 611, thereby limiting the extension tube 61 and fixing the pressure cover 6. In this way, when replacing the pressure relief spring 5, only the locking sleeve 7 needs to be slid to lock and release the pressure cover 6, thereby improving the convenience of disassembling and assembling the pressure cover 6 and thus improving the convenience of replacing the pressure relief spring 5.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A pressure relief device for a hydrogenation reactor used in coal-based fuel processing, comprising a sleeve connected to the hydrogenation reactor, a through channel provided inside the sleeve, a pressure relief pipe communicating with the channel on the outside of the sleeve, a piston provided inside the channel, the piston opening or closing the pressure relief pipe by sliding along the channel, characterized in that, The channel is equipped with a pressure relief spring and a limiting assembly. The limiting assembly is used to compress the pressure relief spring. The top of the sleeve is equipped with a pressure cap. A locking sleeve is fitted around the outer periphery of the sleeve. The locking sleeve can lock or release the pressure cap by moving along the axis of the sleeve.

2. The pressure relief device for a hydrogenation reactor for coal-based fuel processing according to claim 1, characterized in that, The sleeve has a through groove on its peripheral wall. There are multiple through grooves evenly distributed around the circumference. A locking steel ball is installed in the through groove. The through groove is located on the outer and inner sides of the sleeve, forming an installation end and a limiting end, respectively. The inner diameter of the installation end is not less than the inner diameter of the locking steel ball, and the inner diameter of the limiting end is not greater than the inner diameter of the locking steel ball, so as to limit the locking steel ball. The bottom of the pressure cap has an extension tube extending into the channel. The peripheral wall of the extension tube has an alignment groove that can be opposite to or offset from the through groove, so that the locking steel ball can be pressed into or released from the alignment groove, thereby locking or releasing the pressure cap.

3. The pressure relief device for a hydrogenation reactor for coal-based fuel processing according to claim 2, characterized in that, The outer periphery of the sleeve is provided with an installation step, and the inner side of the locking sleeve is provided with a protruding pressing part. The pressing part moves along the axial direction of the sleeve through the locking sleeve to be opposite to or offset from the through groove. An installation cavity is formed between the pressing part and the installation step. A locking spring is provided in the installation cavity. One end of the locking spring is fixed to the installation step, and the other end is fixed to the pressing part. The locking spring is used to keep the pressing part in a position opposite to the through groove.

4. The pressure relief device for a hydrogenation reactor for coal-based fuel processing according to claim 1, characterized in that, The limiting assembly includes a bottom limiting block located near the piston and a top limiting block located near the pressure cap. A connecting rod is provided between the bottom limiting block and the piston. The bottom limiting block and the top limiting block can respectively contact the two ends of the pressure relief spring to compress the pressure relief spring.

5. The pressure relief device for a hydrogenation reactor for coal-based fuel processing according to claim 1, characterized in that, The top of the pressure cap is provided with a connecting hole, and an adjusting rod is provided in the connecting hole. The adjusting rod can form a threaded engagement with the connecting hole. One end of the adjusting rod is connected to the top limiting block, and the other end is provided with an internal hexagonal groove. By rotating the adjusting rod, the top limiting block is moved axially along the channel to adjust the pre-compression amplitude of the pressure relief spring.

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