Methanol generator liquid return monitoring device and method

Abstract

The invention discloses a methanol generator liquid return monitoring device and method, and relates to the technical field of methanol generator liquid return monitoring. The methanol generator liquid return monitoring device comprises a first collecting tank, a feeding pipe is arranged at the top end of the first collecting tank, and a second collecting tank is arranged on one side of the first collecting tank; a connecting pipe is arranged between the first collecting tank and the second collecting tank, a second electromagnetic valve is arranged at the upper end of the connecting pipe, the connecting pipe is made of a metal material, a first supporting assembly is arranged on the other side of the first collecting tank, and a second supporting assembly is arranged on one side of the second collecting tank; according to the scheme, the problems that when return liquid of an existing methanol generator falls into a collecting tank to be collected and the amount is large, reminding is conducted in an alarm mode, however, the return liquid cannot be treated in time, continuous collection easily causes large pressure of the collecting tank to cause damage to a connector, operation of the generator needs to be stopped when collection is not continuous, and normal use is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of methanol generator liquid return monitoring, in particular to a methanol generator liquid return monitoring device and method. Background Art

[0002] Methanol generator liquid backflow refers to the backflow of methanol fuel in the generator system. In some methanol generator designs, the fuel system includes a recovery function. The incompletely burned methanol gas is liquefied through the cooling heat exchanger and returned to the collection tank, participating in the fuel supply cycle. This design aims to improve fuel utilization and reduce waste.

[0003] For example, the Chinese authorized patent with announcement number CN113482768A (a high-efficiency and low-emission methanol generator): includes a methanol generator body, positioning plates are fixed at the bottom ends of both sides of the methanol generator body, through slots are opened in the middle position of the tops of the two positioning plates, and positioning frames are slidably provided in the two through slots, and one end of the top of the two positioning frames is fixed with a positioning disk, and one end of the top of the two positioning frames is fixedly connected to the two ends of the outer wall of the positioning disk, and a collecting cover is fixed at the bottom end of the positioning disk. The present invention drives a screw with one end fixed to rotate by a motor fixed to one side of the side plate, and the rotation of the screw drives the positioning seat threadedly connected to the outer wall to move back and forth, so that the gas discharged from the methanol generator body is collected in the induced draft fan, so that the exhaust gas of the methanol generator is purified, and it is avoided that the working efficiency of the methanol generator is reduced due to different physical changes in the gas, thereby increasing the practicality of the methanol generator.

[0004] The return liquid of the existing methanol generator falls into the collection tank for collection. When the amount is large, an alarm is issued to remind you, but the return liquid cannot be processed in time. Continuous collection can easily cause high pressure in the collection tank and damage the interface. If the collection is not continuous, the generator operation needs to be stopped, affecting normal use. To this end, we provide a methanol generator return liquid monitoring device and method. Summary of the Invention

[0005] The purpose of the present invention is to provide a methanol generator return liquid monitoring device and method to solve the problem proposed in the above background technology that the return liquid of the existing methanol generator falls into the collection tank for collection. When the amount is large, an alarm is used to remind, but the return liquid cannot be processed in time. Continuous collection can easily cause high pressure in the collection tank and damage to the interface. If the collection is not continuous, the generator operation needs to be stopped, affecting normal use.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a methanol generator liquid return monitoring device, comprising a first collecting tank, a feed pipe is provided at the top of the first collecting tank, a second collecting tank is provided on one side of the first collecting tank, a connecting pipe is provided between the first collecting tank and the second collecting tank, a second solenoid valve is provided at the upper end of the connecting pipe, and the connecting pipe is made of metal material, a first supporting assembly is provided on the other side of the first collecting tank, a second supporting assembly is provided on one side of the second collecting tank, a first liquid level gauge is provided at the upper end of the first collecting tank, and a second liquid level gauge is provided at the upper end of the second collecting tank.

[0007] Preferably, the first collecting tank and the second collecting tank both include an extension body, a discharge pipe is provided on one side of the extension body of the second collecting tank, a first solenoid valve is provided on the upper end of the discharge pipe, an upper cylinder is provided on the upper surface of the extension body, and a lower cylinder is provided on the lower surface of the extension body, and the first collecting tank and the second collecting tank are both hollow structures.

[0008] Preferably, a mounting socket is provided on the upper surface of the upper cylinder, and the monitoring ends of the first liquid level gauge and the second liquid level gauge are respectively inserted along the mounting sockets of the first collection tank and the second collection tank, a screw hole is provided on the outside of the mounting socket, and the first liquid level gauge and the second liquid level gauge are fixed to the screw hole by external screws.

[0009] Preferably, the first collecting tank also includes a first discharge pipe, and the first discharge pipe is located on the lower surface of the lower cylinder of the first collecting tank. The second collecting tank also includes a second discharge pipe, and the second discharge pipe is located on the lower surface of the lower cylinder of the second collecting tank, and the discharge end of the second discharge pipe is connected to the first discharge pipe.

[0010] Preferably, the first support assembly includes a first support frame, a first connecting seat is provided at the upper end of the first support frame, the second support assembly includes a second support frame, a second connecting seat is provided at the upper end of the second support frame, a mounting notch is provided on one side surface of the second connecting seat, and a limiting bottom plate is provided on the top inner wall of the first support frame and the second support frame.

[0011] Preferably, the top sides of the first connecting seat and the second connecting seat are both pressed down with a top plate, a limiting space is formed between the limiting bottom plate and the pressing down top plate, and one side surface of the limiting bottom plate and the pressing down top plate is provided with an arc groove.

[0012] Preferably, bolt holes are provided on the upper surfaces of both ends of the first support frame and the second support frame, hexagonal bolts are provided on the upper ends of both ends of the first connecting seat and the second connecting seat, and the first connecting seat and the second connecting seat are respectively fixed to the first support frame and the second support frame through the hexagonal bolts and the bolt holes.

[0013] Preferably, the first support assembly also includes a first adjustment frame, and the first adjustment frame is welded to the inner wall of the first support frame near the bottom end, the second support assembly also includes a second adjustment frame, and the second adjustment frame is welded to the inner wall of the second support frame near the bottom end, and the height of the first adjustment frame is lower than the second adjustment frame, the upper surface of the first adjustment frame contacts the lower surface of the second adjustment frame, and the first adjustment frame and the second adjustment frame are both provided with adjustment grooves at the centers, and the adjustment grooves pass through the first adjustment frame and the second adjustment frame, a fixing bolt is inserted into the inside of the adjustment groove, and the inserted end of the fixing bolt passes through the adjustment groove and is threadedly connected to the nut.

[0014] Preferably, a fixing plate is provided on one side surface of the bottom end of each of the first supporting frame and the second supporting frame, and a plurality of fixing plates are provided.

[0015] Preferably, a monitoring method for a methanol generator liquid return monitoring device comprises the following steps:

[0016] Step 1: Weld the metal connecting pipe between the first collection tank and the second collection tank, and insert the first liquid level gauge and the second liquid level gauge into the first collection tank and the second collection tank respectively, and fix them with screws;

[0017] Step 2: Then adjust the distance between the first support assembly and the second support assembly according to the distance between the first collection tank and the second collection tank, and when adjusting, the first adjustment frame and the second adjustment frame are aligned and moved;

[0018] Step 3: Place the first collection tank and the second collection tank on the first support assembly and the second support assembly, respectively placing them on the limiting bottom plates of the first support frame and the second support frame, push the first support frame and the second support frame towards each other until they can no longer be pushed, and then tighten the fixing bolts to fix the first support frame and the second support frame;

[0019] Step 4: Install the first connecting seat and the second connecting seat on the first supporting frame and the second supporting frame respectively, and press the pressing top plates of the first connecting seat and the second connecting seat down on the first collecting tank and the second collecting tank respectively, and then tighten the hexagonal bolts;

[0020] Step 5: The liquefied methanol gas is drained from the feed pipe into the first collecting tank, and the return liquid volume is monitored by using the first liquid level meter. When the predetermined value is exceeded, the PLC sends an electrical signal to open the second solenoid valve, and an alarm is issued. The terminal connected to the PLC has an alarm. The return liquid flows from the connecting pipe into the second collecting tank, and the return liquid volume is monitored by using the second liquid level meter. When the predetermined value is exceeded, the PLC sends an electrical signal to open the first solenoid valve, and the return liquid is discharged from the generator through the discharge pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention connects the first collecting tank and the second collecting tank through a metal connecting pipe, and monitors the amount of liquid return collected in the first collecting tank and the second collecting tank respectively through the first liquid level gauge and the second liquid level gauge. When the amount of liquid return in the first collecting tank exceeds a predetermined value, the PLC sends an electric signal to open the second solenoid valve, and issues an alarm. The liquid return flows from the connecting pipe into the second collecting tank, thereby achieving a diversion effect, avoiding high pressure damage caused by continuous backflow of the first collecting tank, improving safety, and facilitating timely maintenance by personnel without wasting liquid return. The second liquid level gauge is used to monitor the amount of liquid return in the second collecting tank, and when it exceeds a predetermined value, the PLC sends an electric signal to start the alarm. Open the first solenoid valve, and the return liquid is discharged from the generator through the discharge pipe and falls on the ground for people to see. This will not cause excessive pressure damage to the first collection tank and the second collection tank, thereby increasing the service life. In addition, the methanol generator will not stop operating because the first collection tank and the second collection tank are full, nor will the methanol generator stop operating due to damage, thereby ensuring normal use. This solves the problem that the return liquid of the existing methanol generator falls into the collection tank for collection. When the amount is large, an alarm is used to remind people, but the return liquid cannot be processed in time. Continuous collection can easily cause high pressure in the collection tank and damage to the interface. If collection is not continuous, the generator needs to be stopped, affecting normal use.

[0023] (2) By respectively arranging the first supporting assembly and the second supporting assembly at the lower ends of the first collecting tank and the second collecting tank, the first collecting tank and the second collecting tank are respectively placed on the limiting bottom plates of the first supporting frame and the second supporting frame, and the first supporting frame and the second supporting frame are pushed toward each other until they can no longer be pushed, and the first adjusting frame and the second adjusting frame are fixed by tightening the fixing bolts, thereby fixing the first supporting frame and the second supporting frame. This is suitable for first collecting tanks and second collecting tanks of different sizes, thereby improving applicability and flexibility. By respectively pressing down the first collecting tank and the second collecting tank with the pressing top plates of the first connecting seat and the second connecting seat, and tightening the hexagonal bolts to fix them, the first collecting tank and the second collecting tank are pressed down and fixed, rather than fixing them by drilling holes to damage the surface, which is not easy to damage the first collecting tank and the second collecting tank, thereby improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the connection structure between the first collection tank and the second collection tank of the present invention;

[0026] Figure 3 This is a schematic diagram of the split structure of the first collecting tank and the first liquid level gauge of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection structure between the first supporting assembly and the second supporting assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the split structure of the first supporting frame and the second supporting frame and the first connecting seat and the second connecting seat of the present invention;

[0029] In the figure: 1. first collecting tank; 2. second collecting tank; 3. first supporting assembly; 4. second supporting assembly; 5. first liquid level gauge; 6. second liquid level gauge; 7. connecting pipe; 8. feed pipe; 9. discharge pipe; 10. first solenoid valve; 11. extension body; 12. upper cylinder; 13. lower cylinder; 14. first discharge pipe; 15. second discharge pipe; 16. mounting socket; 17. screw hole; 18. first supporting frame; 19. first connecting seat; 20. second supporting frame; 21. second connecting seat; 22. limiting bottom plate; 23. pressing top plate; 24. arc groove; 25. limiting space; 26. hexagonal bolt; 27. fixing plate; 28. first adjusting frame; 29. ​​second adjusting frame; 30. adjusting groove; 31. fixing bolt; 32. bolt hole; 33. second solenoid valve; 34. mounting notch. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figure 1-5, an embodiment provided by the present invention: a methanol generator liquid return monitoring device, comprising a first collecting tank 1, a feed pipe 8 is provided at the top of the first collecting tank 1, a second collecting tank 2 is provided on one side of the first collecting tank 1, a connecting pipe 7 is provided between the first collecting tank 1 and the second collecting tank 2, a second solenoid valve 33 is provided on the upper end of the connecting pipe 7, and the connecting pipe 7 is made of metal material, a first supporting assembly 3 is provided on the other side of the first collecting tank 1, a second supporting assembly 4 is provided on one side of the second collecting tank 2, a first liquid level gauge 5 is provided on the upper end of the first collecting tank 1, and a second liquid level gauge 6 is provided on the upper end of the second collecting tank 2, the first collecting tank 1 and the second collecting tank 2 both include an extension body 11, a discharge pipe 9 is provided on one side of the extension body 11 of the second collecting tank 2, a first solenoid valve 10 is provided on the upper end of the discharge pipe 9, and an upper cylindrical The upper cylinder 12 is provided with a lower cylinder 13 on the lower surface of the extension body 11, and the first collection tank 1 and the second collection tank 2 are both hollow structures. The collection volume of the first collection tank 1 and the second collection tank 2 is increased by the extension body 11. The upper surface of the upper cylinder 12 is provided with a mounting socket 16, and the monitoring ends of the first liquid level gauge 5 and the second liquid level gauge 6 are respectively inserted along the mounting socket 16 of the first collection tank 1 and the second collection tank 2. The outside of the mounting socket 16 is provided with a screw hole 17, and the first liquid level gauge 5 and the second liquid level gauge 6 are fixed to the screw hole 17 by external screws. The first liquid level gauge 5 and the second liquid level gauge 6 are used to monitor the internal backflow collection volume of the first collection tank 1 and the second collection tank 2 respectively. The first liquid level gauge 5 and the second liquid level gauge 6 are both float type liquid level gauges, and the first liquid level gauge 5 and the second liquid level gauge 6 are both controlled by a PLC system;

[0032] The first collecting tank 1 further includes a first discharge pipe 14, and the first discharge pipe 14 is located on the lower surface of the lower cylinder 13 of the first collecting tank 1. The second collecting tank 2 further includes a second discharge pipe 15, and the second discharge pipe 15 is located on the lower surface of the lower cylinder 13 of the second collecting tank 2, and the discharge end of the second discharge pipe 15 is connected to the first discharge pipe 14. Figure 2 As shown, it is used for liquid return drainage operation;

[0033] The first support assembly 3 includes a first support frame 18, and a first connecting seat 19 is provided at the upper end of the first support frame 18. The second support assembly 4 includes a second support frame 20, and a second connecting seat 21 is provided at the upper end of the second support frame 20. A mounting notch 34 is provided on one side surface of the second connecting seat 21. The top inner walls of the first support frame 18 and the second support frame 20 are both provided with a limiting bottom plate 22. The top sides of the first connecting seat 19 and the second connecting seat 21 are both pressed down with a top plate 23. A limiting space 25 is formed between the limiting bottom plate 22 and the pressing top plate 23. The limiting space 25 has a clamping and limiting fixing effect on the first collection tank 1 and the second collection tank 2, as shown in FIG. Figure 1As shown, one side surface of the limiting bottom plate 22 and the pressing top plate 23 are both provided with an arc groove 24, which is used to adapt to the shape of the first collection tank 1 and the second collection tank 2, and the upper surfaces of both ends of the first support frame 18 and the second support frame 20 are both provided with bolt holes 32, and the upper ends of both ends of the first connecting seat 19 and the second connecting seat 21 are both provided with hexagonal bolts 26, and the first connecting seat 19 and the second connecting seat 21 are respectively fixed to the first support frame 18 and the second support frame 20 by the hexagonal bolts 26 and the bolt holes 32, and by fixing the first connecting seat 19 and the second connecting seat 21, the first collection tank 1 and the second collection tank 2 are pressed down and fixed;

[0034] The first support assembly 3 also includes a first adjustment frame 28, and the first adjustment frame 28 is welded to the inner wall of the first support frame 18 near the bottom end. The second support assembly 4 also includes a second adjustment frame 29, and the second adjustment frame 29 is welded to the inner wall of the second support frame 20 near the bottom end. The height of the first adjustment frame 28 is lower than the second adjustment frame 29. The upper surface of the first adjustment frame 28 contacts the lower surface of the second adjustment frame 29. An adjustment slot 30 is provided at the center of the first adjustment frame 28 and the second adjustment frame 29, and the adjustment slot 30 passes through the first adjustment frame 28 and the second adjustment frame 29. A fixing bolt 31 is inserted into the interior of the adjustment slot 30, and the insertion end of the fixing bolt 31 passes through The nut is threadedly connected after the adjustment groove 30, and the first collection tank 1 and the second collection tank 2 are supported and fixed by the first support component 3 and the second support component 4 to prevent the first collection tank 1 and the second collection tank 2 from separating and falling. The fixing is fixed in a downward pressing form, and the surface of the first collection tank 1 and the second collection tank 2 is not damaged by drilling and fixing, which improves the service life after use and is also convenient for quick disassembly and replacement. A fixing plate 27 is provided on one side surface of the bottom end of the first support frame 18 and the second support frame 20, and a plurality of fixing plates 27 are provided, which are connected to the ground through external bolts of the fixing plate 27, thereby fixing the first support frame 18 and the second support frame 20 to the ground.

[0035] See also Figure 1-5 A monitoring method for a methanol generator liquid return monitoring device comprises the following steps:

[0036] Step 1: Weld the metal connecting pipe 7 between the first collection tank 1 and the second collection tank 2, and insert the first liquid level gauge 5 and the second liquid level gauge 6 into the first collection tank 1 and the second collection tank 2 respectively, and fix them with screws;

[0037] Step 2: Then adjust the distance between the first support assembly 3 and the second support assembly 4 according to the distance between the first collection tank 1 and the second collection tank 2. During the adjustment, the first adjustment frame 28 and the second adjustment frame 29 are aligned and moved;

[0038] Step 3: Place the first collection tank 1 and the second collection tank 2 on the first support assembly 3 and the second support assembly 4. When placing them, they should be placed on the limiting bottom plates 22 of the first support frame 18 and the second support frame 20, respectively. Push the first support frame 18 and the second support frame 20 toward each other until they can no longer be pushed. Then tighten the fixing bolts 31 to fix the first support frame 18 and the second support frame 20.

[0039] Step 4: Install the first connecting seat 19 and the second connecting seat 21 on the first support frame 18 and the second support frame 20 respectively, and press the pressing top plates 23 of the first connecting seat 19 and the second connecting seat 21 downward on the first collection tank 1 and the second collection tank 2 respectively, and then tighten the hexagonal bolts 26;

[0040] Step 5: The liquefied methanol gas is drained from the feed pipe 8 into the first collection tank 1, and the return liquid amount is monitored by using the first liquid level meter 5. When the predetermined value is exceeded, the PLC sends an electrical signal to open the second solenoid valve 33, and an alarm is issued. The terminal connected to the PLC has an alarm. The return liquid flows from the connecting pipe 7 into the second collection tank 2. The return liquid amount is monitored by using the second liquid level meter 6. When the predetermined value is exceeded, the PLC sends an electrical signal to open the first solenoid valve 10, and the return liquid is discharged from the generator through the discharge pipe 9.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A methanol generator liquid return monitoring device, comprising a first collecting tank (1), wherein a feed pipe (8) is provided at the top of the first collecting tank (1), characterized in that: A second collecting tank (2) is provided on one side of the first collecting tank (1), a connecting pipe (7) is provided between the first collecting tank (1) and the second collecting tank (2), a second solenoid valve (33) is provided at the upper end of the connecting pipe (7), and the connecting pipe (7) is made of metal material, a first supporting assembly (3) is provided on the other side of the first collecting tank (1), a second supporting assembly (4) is provided on one side of the second collecting tank (2), a first liquid level gauge (5) is provided at the upper end of the first collecting tank (1), and a second liquid level gauge (6) is provided at the upper end of the second collecting tank (2).

2. A methanol generator liquid return monitoring device according to claim 1, characterized in that: The first collecting tank (1) and the second collecting tank (2) both comprise an extension body (11); a discharge pipe (9) is provided on one side of the extension body (11) of the second collecting tank (2); a first solenoid valve (10) is provided at the upper end of the discharge pipe (9); an upper cylinder (12) is provided on the upper surface of the extension body (11); a lower cylinder (13) is provided on the lower surface of the extension body (11); and both the first collecting tank (1) and the second collecting tank (2) are hollow structures.

3. The methanol generator liquid return monitoring device according to claim 2, characterized in that: The upper surface of the upper cylinder (12) is provided with a mounting socket (16), and the monitoring ends of the first liquid level gauge (5) and the second liquid level gauge (6) are respectively inserted along the mounting sockets (16) of the first collection tank (1) and the second collection tank (2), and the outside of the mounting socket (16) is provided with a screw hole (17), and the first liquid level gauge (5) and the second liquid level gauge (6) are fixed to the screw hole (17) by an external screw.

4. The methanol generator liquid return monitoring device according to claim 3, characterized in that: The first collecting tank (1) further comprises a first discharge pipe (14), and the first discharge pipe (14) is located on the lower surface of the lower cylinder (13) of the first collecting tank (1); the second collecting tank (2) further comprises a second discharge pipe (15), and the second discharge pipe (15) is located on the lower surface of the lower cylinder (13) of the second collecting tank (2), and the discharge end of the second discharge pipe (15) is connected to the first discharge pipe (14).

5. The methanol generator liquid return monitoring device according to claim 4, characterized in that: The first support assembly (3) comprises a first support frame (18), the upper end of which is provided with a first connecting seat (19), the second support assembly (4) comprises a second support frame (20), the upper end of which is provided with a second connecting seat (21), a side surface of which is provided with a mounting notch (34), and the top inner walls of the first support frame (18) and the second support frame (20) are both provided with a limiting bottom plate (22).

6. The methanol generator liquid return monitoring device according to claim 5, characterized in that: A top plate (23) is pressed down on one side of the top of the first connecting seat (19) and the second connecting seat (21), and a limiting space (25) is formed between the limiting bottom plate (22) and the pressing top plate (23). Arc grooves (24) are provided on one side surface of the limiting bottom plate (22) and the pressing top plate (23).

7. The methanol generator liquid return monitoring device according to claim 6, characterized in that: Bolt holes (32) are provided on the upper surfaces of both ends of the first support frame (18) and the second support frame (20), hexagonal bolts (26) are provided on the upper ends of both ends of the first connecting seat (19) and the second connecting seat (21), and the first connecting seat (19) and the second connecting seat (21) are respectively fixed to the first support frame (18) and the second support frame (20) through the hexagonal bolts (26) and the bolt holes (32).

8. The methanol generator liquid return monitoring device according to claim 7, characterized in that: The first support assembly (3) further comprises a first adjustment frame (28), and the first adjustment frame (28) is welded to the inner wall of the first support frame (18) near the bottom end, the second support assembly (4) further comprises a second adjustment frame (29), and the second adjustment frame (29) is welded to the inner wall of the second support frame (20) near the bottom end, and the height of the first adjustment frame (28) is lower than that of the second adjustment frame (29), the upper surface of the first adjustment frame (28) contacts the lower surface of the second adjustment frame (29), an adjustment slot (30) is provided at the center of the first adjustment frame (28) and the second adjustment frame (29), and the adjustment slot (30) passes through the first adjustment frame (28) and the second adjustment frame (29), a fixing bolt (31) is inserted into the interior of the adjustment slot (30), and the insertion end of the fixing bolt (31) passes through the adjustment slot (30) and is threadedly connected to a nut.

9. The methanol generator liquid return monitoring device according to claim 8, characterized in that: A fixing plate (27) is provided on one side surface of the bottom end of each of the first supporting frame (18) and the second supporting frame (20), and a plurality of fixing plates (27) are provided.

10. A monitoring method for a methanol generator liquid return monitoring device, based on the methanol generator liquid return monitoring device according to claim 9, characterized in that: The following steps are involved: Step 1: Weld the metal connecting pipe (7) between the first collecting tank (1) and the second collecting tank (2), and insert the first liquid level gauge (5) and the second liquid level gauge (6) into the first collecting tank (1) and the second collecting tank (2), respectively, and fix them with screws; Step 2: Then, the distance between the first support assembly (3) and the second support assembly (4) is adjusted according to the distance between the first collection tank (1) and the second collection tank (2), and during the adjustment, the first adjustment frame (28) and the second adjustment frame (29) are aligned and moved; Step 3: Place the first collection tank (1) and the second collection tank (2) on the first support assembly (3) and the second support assembly (4). When placing them, place them on the limiting bottom plates (22) of the first support frame (18) and the second support frame (20), respectively. Push the first support frame (18) and the second support frame (20) toward each other until they can no longer be pushed. Then tighten the fixing bolts (31) to fix the first support frame (18) and the second support frame (20). Step 4: Install the first connecting seat (19) and the second connecting seat (21) on the first support frame (18) and the second support frame (20) respectively, and press the first collecting tank (1) and the second collecting tank (2) with the pressing top plates (23) of the first connecting seat (19) and the second connecting seat (21) respectively, and then tighten the hexagonal bolts (26); Step 5: The liquefied methanol gas is drained from the feed pipe (8) and enters the first collecting tank (1). The return liquid amount is monitored by using the first liquid level meter (5). When the amount exceeds a predetermined value, the PLC sends an electrical signal to open the second solenoid valve (33) and issues an alarm. The terminal connected to the PLC has an alarm. The return liquid flows from the connecting pipe (7) into the second collecting tank (2). The return liquid amount is monitored by using the second liquid level meter (6). When the amount exceeds a predetermined value, the PLC sends an electrical signal to open the first solenoid valve (10), and the return liquid is discharged from the generator through the discharge pipe (9).

Images