A device for producing steam by low-concentration coal mine gas regenerative oxidation

Abstract

The utility model relates to the field of mining low concentration gas application technology discloses a kind of low concentration coal mine gas heat accumulation oxidation production steam device, including bottom plate, the top of bottom plate is fixedly connected with oxidation tank, the outside of oxidation tank is fixedly connected with multiple fixed plates, the front side inner wall of one of the fixed plates is fixedly connected with pressure relief pipe, multiple pressure relief holes are arranged in the inside of pressure relief pipe, limit slot is arranged in the inside of pressure relief pipe, the top inner wall of limit slot is fixedly connected with spring one, the bottom of spring one is fixedly connected with pressure relief column, the bottom of pressure relief column is fixedly connected with connecting column, multiple connecting holes are arranged in the inside of pressure relief column.In the utility model, it is achieved that pressure relief column is driven by air pressure to extrude spring to slide and reset, pulse pressure relief is achieved, air pressure in oxidation tank is accurately controlled, air pressure abnormal fluctuation is avoided, and equipment safe and stable operation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of low-concentration coal mine gas application technology, and in particular to a low-concentration coal mine gas regenerative oxidation steam production device. Background Technology

[0002] The regenerative oxidation steam production device is a device that uses heat storage materials to recover the heat released by the oxidation reaction and transfer the heat to the water body to generate steam. It can achieve the dual functions of efficient heat utilization and steam production.

[0003] The low-concentration coal mine gas regenerative oxidation steam production device is designed for the characteristics of low-concentration coal mine gas. Its working principle is to mix and oxidize the low-concentration gas with air in the regenerative oxidation chamber. The heat released is absorbed by the heat storage body and then used to heat water, ultimately producing steam, thus realizing the integration of gas heat energy recovery and steam production.

[0004] In existing technologies, the pressure control of the oxidation tank in regenerative thermal oxidation steam production devices for low-concentration coal mine gas is one of the core issues affecting the stable and safe operation of the device. When low-concentration coal mine gas undergoes a regenerative oxidation reaction in the oxidation tank, the exothermic reaction causes frequent fluctuations in the tank pressure. If the pressure is too high, conventional pressure relief structures are mostly simple one-way pressure relief valves, which are difficult to precisely control the pressure relief rhythm and pressure range, leading to incomplete combustion, the generation of pollutants such as carbon monoxide, and reduced energy conversion efficiency. Therefore, a regenerative thermal oxidation steam production device for low-concentration coal mine gas is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-concentration coal mine gas regenerative oxidation steam production device, which aims to improve the problem of incomplete combustion and the generation of pollutants such as carbon monoxide in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A low-concentration coal mine gas regenerative oxidation steam production device includes a base plate, an oxidation tank fixedly connected to the top of the base plate, multiple fixed plates fixedly connected to the outside of the oxidation tank, a pressure relief pipe fixedly connected to the inner front wall of one of the fixed plates, multiple pressure relief holes opened inside the pressure relief pipe, a limiting groove opened inside the pressure relief pipe, a spring one fixedly connected to the top inner wall of the limiting groove, a pressure relief column fixedly connected to the bottom of the spring one, a connecting column fixedly connected to the bottom of the pressure relief column, multiple connecting holes opened inside the pressure relief column, a through hole opened inside the connecting column, a spring two fixedly connected to the top of the connecting column, a gas main pipe fixedly connected to the left side of the oxidation tank, and a portable component for easy removal of the filter pipe detachably connected inside the gas main pipe;

[0008] As a further description of the above technical solution:

[0009] The portable component includes a filter tube, which is externally fixedly connected to two connecting rings. One of the connecting rings has multiple inverted L-shaped blocks fixedly connected to its left side. The gas main pipe is externally fixedly connected to two fixing rings, and the fixing rings have multiple sliding grooves inside.

[0010] As a further description of the above technical solution:

[0011] One of the slides has a spring three fixedly connected to the bottom inner wall, one of the spring three has a positive L-block fixedly connected to the right side, and a linkage ring is fixedly connected to the left side of multiple positive L-blocks.

[0012] As a further description of the above technical solution:

[0013] The pressure relief column is externally slidably connected to the inside of the limiting groove, and the rear side of one of the pressure relief pipes is fixedly connected to the outside of the oxidation tank;

[0014] As a further description of the above technical solution:

[0015] The pressure relief column is subjected to air pressure impact, causing its multiple connection holes and multiple pressure relief holes to correspond to each other, and the top of the base plate is fixedly connected to the exhaust pipe;

[0016] As a further description of the above technical solution:

[0017] A control valve is installed on the outside of the main gas pipe, and a control cabinet is installed on the top of the base plate;

[0018] As a further description of the above technical solution:

[0019] The outer sides of the positive L-block and the outer sides of the inverted L-block engage with each other, and the outer side of the positive L-block is slidably connected to the inside of the groove;

[0020] As a further description of the above technical solution:

[0021] A lever is fixedly connected to the top of the linkage ring, and the outside of the filter tube is detachably connected to the inside of the gas main pipe.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, gas can enter the interior of the pressure relief column through the through hole. The gas pressure impact causes the pressure relief column to slide by squeezing spring one and spring two. The connecting hole on the pressure relief column corresponds to the pressure relief hole of the pressure relief pipe. As the pressure relief column slides down, the connecting hole and the pressure relief hole are misaligned, thereby realizing the pressure relief column squeezes the spring to slide and reset by gas pressure, achieving pulse-type pressure relief, accurately controlling the gas pressure in the oxidation tank, avoiding abnormal gas pressure fluctuations, and ensuring the safe and stable operation of the equipment.

[0024] 2. In this utility model, by rotating the top toggle block of the linkage ring, the linkage ring and the positive L-block rotate. The positive L-block rotates and disengages from the inverted L-block. At the same time, the compression spring retracts, which can disengage the inverted L-block from the inside of the slide groove. Rotating the toggle block causes the positive L-block to rotate, and the inverted L-block is aligned with the slide groove and inserted. The spring retracts elastically and pushes the positive L-block and the inverted L-block to engage. This allows for convenient disassembly and assembly of the filter tube and cleaning and replacement of the filter screen. The spring retracts elastically and engages with the filter screen, simplifying the maintenance process and improving operational efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a low-concentration coal mine gas regenerative oxidation steam production device proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the fixing plate of a low-concentration coal mine gas regenerative oxidation steam production device proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the structure of a filter tube for a low-concentration coal mine gas regenerative oxidation steam production device proposed in this utility model.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Base plate; 2. Oxidation tank; 3. Fixing plate; 4. Pressure relief pipe; 5. Pressure relief hole; 6. Limiting groove; 7. Spring 1; 8. Pressure relief column; 9. Connecting column; 10. Connecting hole; 11. Through hole; 12. Spring 2; 13. Gas main pipe; 14. Filter pipe; 15. Connecting ring; 16. Inverted L-shaped block; 17. Fixing ring; 18. Sliding groove; 19. Spring 3; 20. Upright L-shaped block; 21. Linkage ring; 22. Exhaust gas discharge pipe; 23. Control valve; 24. Control cabinet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a low-concentration coal mine gas regenerative oxidation steam production device, including a base plate 1, which provides installation space and support for the upper device. An oxidation tank 2 is fixedly connected to the top of the base plate 1, which provides oxidation space for the gas. Multiple fixing plates 3 are fixedly connected to the outside of the oxidation tank 2, which provides fixation and support for the pressure relief pipe 4. A pressure relief pipe 4 is fixedly connected to the inner wall of the front side of one of the fixing plates 3, which provides space for opening pressure relief holes 5. Multiple pressure relief holes 5 are opened inside the pressure relief pipe 4. When the pressure relief column 8 slides upward, the connecting hole 10 is aligned with the pressure relief hole 5 to release pressure. A limiting groove 6 is opened inside the pressure relief pipe 4, which provides fixation and support for the spring 7.

[0033] A spring 7 is fixedly connected to the top inner wall of the limiting groove 6. The spring 7 has an elastic function and provides elastic support for its pressure relief column 8. The pressure relief column 8 is fixedly connected to the bottom of the spring 7. It can move through the gas pressure entering through the through hole 11 and squeeze the spring 7. When the pressure reaches a certain level, it causes the connecting hole 10 to correspond with the pressure relief hole 5 to release pressure. A connecting column 9 is fixedly connected to the bottom of the pressure relief column 8. The connecting column 9 provides space for the opening of the connecting hole 10. Multiple connecting holes 10 are opened inside the pressure relief column 8. When the pressure relief column 8 is subjected to the internal air pressure from the bottom plate 1, it squeezes and slides the spring 7, so that the connecting hole 10 corresponds with the pressure relief hole 5 to release pressure.

[0034] The connecting column 9 has a through hole 11 inside, which allows the air pressure inside the base plate 1 to enter the interior of the pressure relief column 8 for sliding. A second spring 12 is fixedly connected to the top of the connecting column 9. The second spring 12 has an elastic function and provides elastic support for the connecting column 9. When subjected to air pressure impact, it can achieve a pulse-type pressure relief effect through the double elastic action of the second spring 12 and the first spring 7. A gas main pipe 13 is fixedly connected to the left side of the oxidation tank 2. The gas main pipe 13 is the main pipe for gas transportation. A portable component that is detachable and convenient for disassembling the filter pipe 14 is detachably connected inside the gas main pipe 13.

[0035] Reference Figure 3 and Figure 4The portable component includes a filter tube 14, which provides fixation and support for the connecting ring 15. Two connecting rings 15 are fixedly connected to the outside of the filter tube 14. The connecting rings 15 provide fixation and support for the inverted L-shaped blocks 16. Multiple inverted L-shaped blocks 16 are fixedly connected to the left side of one of the connecting rings 15. The inverted L-shaped blocks 16 are used to engage with the regular L-shaped blocks 20 to limit and fix the filter tube 14. Two fixing rings 17 are fixedly connected to the outside of the gas main pipe 13. The fixing rings 17 provide space for the opening of the internal sliding grooves 18. Multiple sliding grooves 18 are opened inside the fixing rings 17. The sliding grooves 18 provide fixation and support for the spring 19.

[0036] One of the slide grooves 18 has a spring 19 fixedly connected to its bottom inner wall. The spring 19 has an elastic function and provides elastic support for the positive L-block 20. One of the positive L-blocks 20 is fixedly connected to the right side of one of the springs 19. The positive L-block 20 can engage with the inverted L-block 16 to complete the splicing and fixing. The left side of multiple positive L-blocks 20 is fixedly connected to a linkage ring 21. The operator rotates the lever at the top of the linkage ring 21 to make the linkage ring 21 rotate, which in turn makes the positive L-block 20 rotate, so that the inverted L-block 16 can enter the interior of the slide groove 18. Then, through the elastic reset of the spring 19, the spring 19 is squeezed, so that the positive L-block 20 engages with the inverted L-block 16, thereby limiting and fixing it.

[0037] Reference Figures 1 to 3 The external sliding connection of the pressure relief column 8 is inside the limiting groove 6. The limiting groove 6 provides limiting and guiding functions for the pressure relief column 8. The rear side of one of the pressure relief pipes 4 is fixedly connected to the outside of the oxidation tank 2. The oxidation tank 2 provides fixing and support for the pressure relief pipe 4. When the pressure relief column 8 is impacted by air pressure, its multiple connecting holes 10 and multiple pressure relief holes 5 correspond to each other. When the air pressure of the oxidation tank 2 enters the interior of the pressure relief column 8 through the through hole 11, it can make the pressure relief column 8 slide, so that the connecting holes 10 and pressure relief holes 5 can be depressurized. Pulse-type pressure relief is achieved by the elastic action of spring 2 12 and spring 1 7.

[0038] A tail gas discharge pipe 22 is fixedly connected to the top of the base plate 1. The tail gas discharge pipe 22 is used to discharge the oxidized waste gas. A control valve 23 is installed on the outside of the gas main pipe 13. The control valve 23 is used to control the gas flow of the main pipe. This is existing technology. A control cabinet 24 is installed on the top of the base plate 1. The control cabinet 24 facilitates the operator to control the device. The outside of the positive L block 20 and the outside of the inverted L block 16 are engaged. The positive L block 20 can engage with the inverted L block 16 to limit and fix the filter pipe 14. The outside of the positive L block 20 is slidably connected to the inside of the slide groove 18. The slide groove 18 provides the function of limiting and guiding the positive L block 20. A lever is fixedly connected to the top of the linkage ring 21 to facilitate the operator to control the linkage ring 21. The outside of the filter pipe 14 is detachably connected to the inside of the gas main pipe 13. The gas main pipe 13 can filter the gas through the filter pipe 14.

[0039] Working principle: When the gas pressure inside the oxidation tank 2 rises during use, the gas can enter the pressure relief column 8 through the through hole 11. The gas pressure impact causes the pressure relief column 8 to slide by squeezing the spring 7 and the spring 12. When the pressure reaches a certain threshold, the connecting hole 10 on the pressure relief column 8 corresponds to the pressure relief hole 5 of the pressure relief pipe 4, thus achieving pressure relief. Subsequently, under the elastic reset action of the spring, the pressure relief column 8 slides down, the connecting hole 10 and the pressure relief hole 5 are misaligned, and the pressure relief stops. By using the elasticity of the spring and the change in gas pressure, a pulse-type pressure relief effect is achieved, and the gas pressure inside the tank is stably controlled.

[0040] When the filter tube 14 needs maintenance and replacement after long-term use, the operator rotates the top lever of the linkage ring 21, which drives the linkage ring 21 and the positive L-block 20 to rotate. The positive L-block 20 rotates and disengages from the inverted L-block 16. At the same time, the spring 19 is compressed and retracted, which allows the inverted L-block 16 to disengage from the slide groove 18. The filter tube 14 can then be pulled out to complete the disassembly. During installation, the operation is reversed. The lever is rotated to make the positive L-block 20 rotate, and the inverted L-block 16 is aligned with the slide groove 18 and inserted. The spring 19 elastically returns to its original position and pushes the positive L-block 20 to engage with the inverted L-block 16, thus realizing convenient disassembly and assembly of the filter tube 14 and facilitating filter cleaning and replacement.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-concentration coal mine gas regenerative oxidation steam production device, comprising a base plate (1), characterized in that: An oxidation tank (2) is fixedly connected to the top of the base plate (1). Multiple fixing plates (3) are fixedly connected to the outside of the oxidation tank (2). A pressure relief pipe (4) is fixedly connected to the inner wall of the front side of one of the fixing plates (3). Multiple pressure relief holes (5) are opened inside the pressure relief pipe (4). A limiting groove (6) is opened inside the pressure relief pipe (4). A spring (7) is fixedly connected to the top inner wall of the limiting groove (6). A pressure relief column (8) is fixedly connected to the bottom of the spring (7). A connecting column (9) is fixedly connected to the bottom of the pressure relief column (8). Multiple connecting holes (10) are opened inside the pressure relief column (8). A through hole (11) is opened inside the connecting column (9). A spring (12) is fixedly connected to the top of the connecting column (9). A gas main pipe (13) is fixedly connected to the left side of the oxidation tank (2). A portable component that facilitates the disassembly of the filter pipe (14) is detachably connected inside the gas main pipe (13).

2. The low-concentration coal mine gas regenerative oxidation steam production device according to claim 1, characterized in that: The portable component includes a filter tube (14), which is fixedly connected to two connecting rings (15). One of the connecting rings (15) has multiple inverted L-shaped blocks (16) fixedly connected to its left side. The gas main pipe (13) is fixedly connected to two fixing rings (17), which have multiple sliding grooves (18) inside.

3. The low-concentration coal mine gas regenerative oxidation steam production device according to claim 2, characterized in that: One of the slides (18) is fixedly connected to the bottom inner wall of one of the springs (19), and one of the positive L blocks (20) is fixedly connected to the right side of one of the springs (19), and a linkage ring (21) is fixedly connected to the left side of multiple positive L blocks (20).

4. The low-concentration coal mine gas regenerative oxidation steam production device according to claim 1, characterized in that: The pressure relief column (8) is externally slidably connected to the inside of the limiting groove (6), and the rear side of one of the pressure relief pipes (4) is fixedly connected to the outside of the oxidation tank (2).

5. A low-concentration coal mine gas regenerative oxidation steam production device according to claim 1, characterized in that: The pressure relief column (8) is subjected to air pressure impact, causing its multiple connection holes (10) and multiple pressure relief holes (5) to correspond to each other. The top of the base plate (1) is fixedly connected to the exhaust pipe (22).

6. The low-concentration coal mine gas regenerative oxidation steam production device according to claim 1, characterized in that: A control valve (23) is installed on the outside of the gas main pipe (13), and a control cabinet (24) is installed on the top of the base plate (1).

7. A low-concentration coal mine gas regenerative oxidation steam production device according to claim 3, characterized in that: The outside of the positive L-block (20) and the outside of the inverted L-block (16) engage with each other, and the outside of the positive L-block (20) is slidably connected to the inside of the slide groove (18).

8. A low-concentration coal mine gas regenerative oxidation steam production device according to claim 3, characterized in that: The top of the linkage ring (21) is fixedly connected to a lever, and the outside of the filter tube (14) is detachably connected to the inside of the gas main pipe (13).

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