Overpressure and pressure relief protection mechanism of methanol hydrogen production device

Abstract

The utility model discloses an overpressure relief protection mechanism of a methanol hydrogen production device, which belongs to the technical field of hydrogen production and comprises a pressure pipe, a pressure gauge and an overpressure protection mechanism are mounted on the surface of the pressure pipe, the overpressure protection mechanism is mounted inside the pressure pipe, and the surface of the overpressure protection mechanism extends to the outside of the pressure pipe; wherein the overpressure protection mechanism comprises an inner pipe installed in the pressure pipe, a pressure relief protection assembly is arranged on the side, away from the pressure meter, of the inner pipe, and the end, away from the inner pipe, of the pressure relief protection assembly is connected with a protection regulation and control assembly; a connecting column drives a rotating threaded pipe to rotate on the inner wall of a connecting outer pipe, at the moment, due to the fact that the threaded column is in threaded connection with the inner wall of the rotating threaded pipe, the threaded column drives a sliding square shaft to do linear motion in the horizontal direction, and the sliding square shaft moves to drive a protection regulation and control assembly to follow to do abutting movement; the effect of regulating and controlling the pressure is achieved, and the stability of hydrogen production is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production technology, specifically to an overpressure relief protection mechanism for a methanol-to-hydrogen device. Background Technology

[0002] Methanol-to-hydrogen production typically involves a methanol steam reforming reaction, where methanol reacts with steam at high temperatures to produce hydrogen, carbon monoxide, and carbon dioxide. Temperature and pressure control in the reactor are crucial in this process. This unit produces hydrogen, carbon dioxide, and carbon monoxide through a methanol steam reforming reaction in the presence of a catalyst. The temperature must be maintained above 200°C, and as it is an endothermic reaction, external heating is required. Overpressure risks mainly arise from sudden changes in feed flow, reactor blockage, cooling malfunctions, or safety valve failure.

[0003] A search of existing technology revealed a device for hydrogen production and storage with an overpressure relief protection mechanism, designated CN216556494U. This device, when the hydrogen pressure in the storage tank becomes too high, causes the hydrogen to impact the guide column, resulting in a rightward movement of the guide column. At this point, the first and second fixing plates are in a discharging state, allowing the hydrogen to pass smoothly through them and enter the pressure relief tank for depressurization. Once the pressure in the storage tank decreases, a spring forces the first sealing plate, guide column, and other components to reset, effectively closing the flow guide tube and thus achieving automatic pressure relief to prevent excessive internal pressure. However, due to pressure fluctuations caused by internal reactions caused by varying operating environments, this device cannot adjust for different pressure requirements, affecting the stability of hydrogen production.

[0004] Based on this, the present invention designs an overpressure relief protection mechanism for a methanol-to-hydrogen device to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an overpressure relief protection mechanism for a methanol-to-hydrogen device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An overpressure relief protection mechanism for a methanol-to-hydrogen plant includes a pressure pipe with a pressure gauge mounted on its surface, and an overpressure protection mechanism installed inside the pressure pipe, with a portion of its structure extending outside the pressure pipe. The overpressure protection mechanism includes an inner pipe installed inside the pressure pipe, a pressure relief protection component disposed on the side of the inner pipe away from the pressure gauge, and a protection control component connected to the end of the pressure relief protection component away from the inner pipe. The protection control component is mounted on the surface of the pressure pipe, and its surface extends outside the pressure pipe.

[0008] Furthermore, the protective control component includes a sealing sleeve fixedly connected to the surface of the pressure tube. A sliding square shaft is slidably connected to the inner wall of the sealing sleeve. One end of the sliding square shaft extends into the interior of the pressure tube, and the other end of the sealing sleeve extends into the exterior of the pressure tube and is fixedly connected to a connecting outer tube. A rotating threaded tube is rotatably connected to the inner wall of the connecting outer tube.

[0009] Furthermore, the pressure relief protection assembly includes a connecting rod fixedly connected to one end of a sliding square shaft near the inner tube, an abutment plate rotatably connected to the surface of the connecting rod, a spring sleeved on the surface of the connecting rod, and a sealing head slidably connected to the other end of the connecting rod, the tip of the sealing head extending into the interior of the inner tube.

[0010] Furthermore, a connecting post is fixedly connected to one end of the rotating threaded tube away from the sealing sleeve, and the other end of the connecting post extends through to the outside of the connecting outer tube and is fixedly connected to an operating head.

[0011] Furthermore, a threaded post is fixedly connected to the end of the sliding square shaft away from the pressure relief protection component, and the surface of the threaded post is threadedly connected to the inner wall of the rotating threaded tube.

[0012] Furthermore, the sealing head has an inner groove, and the other end of the connecting rod is fixedly connected to a slider, which is slidably connected to the inner wall of the inner groove.

[0013] Furthermore, one end of the spring is fixedly connected to the inner wall of the contact plate, and the other end of the spring is fixedly connected to the surface of the sealing head.

[0014] Beneficial effects

[0015] The overpressure relief protection mechanism of the aforementioned methanol-to-hydrogen unit can regulate pressure relief through the setting of protection and control components. The device drives the rotating threaded tube to rotate on the inner wall of the connecting outer tube through the connecting column. At this time, since the threaded column is threadedly connected to the inner wall of the rotating threaded tube, and under the action of the sliding square shaft, the threaded column will not rotate. This causes the threaded column to drive the sliding square shaft to make a horizontal linear movement. The movement of the sliding square shaft drives the protection and control components to follow the synchronous displacement, thereby achieving the function of pressure regulation and ensuring the stability of hydrogen production.

[0016] By setting up a pressure relief protection component, the connecting rod can move synchronously when the sliding square shaft moves. The slider at the end of the connecting rod slides on the inner wall of the inner groove opened inside the plug head. At this time, the distance between the contact plate and the plug head is shortened, and the spring is compressed. At this time, the spring contacts the plug head and fits more tightly against the inner wall of the inner tube, thus preventing premature pressure leakage, reducing the impact on the internal hydrogen production reaction and ensuring stable production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overpressure relief protection mechanism of a methanol-to-hydrogen device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the pressure pipe of the overpressure relief protection mechanism of a methanol-to-hydrogen device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the overpressure relief protection mechanism and control component of a methanol-to-hydrogen device according to the present invention.

[0021] Figure 4 This is a schematic diagram of the explosion structure of the overpressure relief protection mechanism and pressure relief protection component of a methanol-to-hydrogen device according to the present invention.

[0022] The labels in the diagram represent:

[0023] 1. Pressure tube; 2. Pressure gauge; 3. Overpressure protection mechanism; 31. Protection and control assembly; 311. Sealing sleeve; 312. Sliding square shaft; 313. Connecting outer tube; 314. Rotating threaded tube; 315. Connecting column; 316. Operating head; 317. Threaded column; 32. Pressure relief protection assembly; 321. Connecting rod; 322. Contact plate; 323. Spring; 324. Sealing head; 325. Inner groove; 326. Sliding block; 33. Inner tube. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4An overpressure relief protection mechanism for a methanol-to-hydrogen device includes a pressure pipe 1, a pressure gauge 2 mounted on the surface of the pressure pipe 1, and an overpressure protection mechanism 3 installed inside the pressure pipe 1, with the surface of the overpressure protection mechanism 3 extending to the outside of the pressure pipe 1. The overpressure protection mechanism 3 includes an inner pipe 33 installed inside the pressure pipe 1, a pressure relief protection component 32 disposed on the side of the inner pipe 33 away from the pressure gauge 2, and a protection control component 31 connected to the end of the pressure relief protection component 32 away from the inner pipe 33. The protection control component 31 is mounted on the surface of the pressure pipe 1, with the surface of the protection control component 31 extending to the outside of the pressure pipe 1.

[0027] In this embodiment of the utility model, the device is controlled by the protection and regulation component 31, so that the pressure relief protection component 32 can withstand different pressures. The pressure relief protection component 32 works in conjunction with the inner tube 33 to perform pressure relief protection operation, so that pressure relief operation is performed when the pressure exceeds the critical point. At the same time, the device can also adjust the pressure relief pressure according to different needs through the regulation of the protection and regulation component 31.

[0028] In some embodiments, such as Figure 1-3 As shown, in a preferred embodiment of the present invention, the protective control component 31 includes a sealing sleeve 311 fixedly connected to the surface of the pressure pipe 1. A sliding square shaft 312 is slidably connected to the inner wall of the sealing sleeve 311. One end of the sliding square shaft 312 extends into the interior of the pressure pipe 1, and the other end of the sealing sleeve 311 extends into the exterior of the pressure pipe 1 and is fixedly connected to a connecting outer pipe 313. A rotating threaded pipe 314 is rotatably connected to the inner wall of the connecting outer pipe 313. A connecting post 315 is fixedly connected to one end of the rotating threaded pipe 314 away from the sealing sleeve 311. The other end of the connecting post 315 extends through to the exterior of the connecting outer pipe 313 and is fixedly connected to an operating head 316. A threaded post 317 is fixedly connected to the end of the sliding square shaft 312 away from the pressure relief protection component 32. The surface of the threaded post 317 is threadedly connected to the inner wall of the rotating threaded pipe 314.

[0029] In this embodiment of the utility model, the device seals the sliding square shaft 312 during sliding by using a sealing sleeve 311. Multiple sealing rings are provided inside the sealing sleeve 311. The sealing sleeve 311 cooperates with the sliding square shaft 312 to prevent the sliding square shaft 312 from rotating easily. When the operator performs the adjustment operation, the knob operation head 316 drives the rotating threaded tube 314 to rotate on the inner wall of the connecting outer tube 313 through the connecting column 315. At this time, since the threaded column 317 is threadedly connected to the inner wall of the rotating threaded tube 314, and the threaded column 317 does not rotate under the action of the sliding square shaft 312, the threaded column 317 drives the sliding square shaft 312 to move in a horizontal linear motion. The movement of the sliding square shaft 312 drives the protective adjustment component 31 to move in a counteracting manner, thereby achieving the function of pressure regulation.

[0030] In some embodiments, such as Figure 1 , Figure 2 , Figure 4 As shown, in a preferred embodiment of this utility model, the pressure relief protection component 32 includes a connecting rod 321 fixedly connected to one end of a sliding square shaft 312 near the inner tube 33. A contact plate 322 is rotatably connected to the surface of the connecting rod 321. A spring 323 is sleeved on the surface of the connecting rod 321. A sealing head 324 is slidably connected to the other end of the connecting rod 321. The tip of the sealing head 324 extends into the interior of the inner tube 33. An inner groove 325 is formed inside the sealing head 324. A slider 326 is fixedly connected to the other end of the connecting rod 321. The slider 326 is slidably connected to the inner wall of the inner groove 325. One end of the spring 323 is fixedly connected to the inner wall of the contact plate 322, and the other end of the spring 323 is fixedly connected to the surface of the sealing head 324.

[0031] In this embodiment of the invention, the device drives the connecting rod 321 to move synchronously as the sliding square shaft 312 moves. The slider 326 at the end of the connecting rod 321 slides on the inner wall of the inner groove 325 opened inside the sealing head 324. At this time, the distance between the contact plate 322 and the sealing head 324 is shortened, and the spring 323 is compressed. The spring 323 then presses against the sealing head 324 and fits more tightly against the inner wall of the inner tube 33, thereby preventing premature pressure leakage from affecting the internal hydrogen production reaction and ensuring stable production.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An overpressure relief protection mechanism for a methanol-to-hydrogen plant, comprising a pressure pipe (1), wherein a pressure gauge (2) is mounted on the surface of the pressure pipe (1), characterized in that: An overpressure protection mechanism (3) is installed inside the pressure tube (1), and the surface of the overpressure protection mechanism (3) extends to the outside of the pressure tube (1); The overpressure protection mechanism (3) includes an inner tube (33) installed inside the pressure tube (1). A pressure relief protection component (32) is provided on the side of the inner tube (33) away from the pressure gauge (2). A protection control component (31) is connected to the end of the pressure relief protection component (32) away from the inner tube (33). The protection control component (31) is installed on the surface of the pressure tube (1) and the surface of the protection control component (31) extends to the outside of the pressure tube (1).

2. The overpressure relief protection mechanism for the methanol-to-hydrogen unit according to claim 1, characterized in that, The protective control component (31) includes a sealing sleeve (311) fixedly connected to the surface of the pressure tube (1). A sliding square shaft (312) is slidably connected to the inner wall of the sealing sleeve (311). One end of the sliding square shaft (312) extends into the interior of the pressure tube (1), and the other end of the sealing sleeve (311) extends into the exterior of the pressure tube (1) and is fixedly connected to a connecting outer tube (313). A rotating threaded tube (314) is rotatably connected to the inner wall of the connecting outer tube (313).

3. The overpressure relief protection mechanism for the methanol-to-hydrogen unit according to claim 2, characterized in that, The pressure relief protection assembly (32) includes a connecting rod (321) fixedly connected to one end of a sliding square shaft (312) near the inner tube (33). A contact plate (322) is rotatably connected to the surface of the connecting rod (321). A spring (323) is sleeved on the surface of the connecting rod (321). A sealing head (324) is slidably connected to the other end of the connecting rod (321). The tip of the sealing head (324) extends into the interior of the inner tube (33).

4. The overpressure relief protection mechanism for the methanol-to-hydrogen unit according to claim 2, characterized in that, The rotating threaded tube (314) is fixedly connected to a connecting post (315) at one end away from the sealing sleeve (311), and the other end of the connecting post (315) extends through to the outside of the connecting outer tube (313) and is fixedly connected to an operating head (316).

5. The overpressure relief protection mechanism for the methanol-to-hydrogen unit according to claim 2, characterized in that, The end of the sliding square shaft (312) away from the pressure relief protection component (32) is fixedly connected to a threaded column (317), and the surface of the threaded column (317) is threadedly connected to the inner wall of the rotating threaded tube (314).

6. The overpressure relief protection mechanism for the methanol-to-hydrogen unit according to claim 3, characterized in that, The sealing head (324) has an inner groove (325) inside, and the other end of the connecting rod (321) is fixedly connected to a slider (326), which is slidably connected to the inner wall of the inner groove (325).

7. The overpressure relief protection mechanism for the methanol-to-hydrogen unit according to claim 6, characterized in that, One end of the spring (323) is fixedly connected to the inner wall of the contact plate (322), and the other end of the spring (323) is fixedly connected to the surface of the sealing head (324).

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