Glycol circulating pump for gas-liquid separation of natural gas

Abstract

The utility model relates to the technical field of glycol circulating pumps, in particular to a glycol circulating pump for gas-liquid separation of natural gas, which comprises a motor body, a pump body and an auxiliary device, the pump body is mounted at one end of the motor body, a liquid inlet pipe and a liquid outlet pipe are respectively mounted on the surface of the pump body, and the auxiliary device is arranged on the surface of the liquid inlet pipe and comprises a connecting pipe. The connecting pipe is installed at one end of the liquid inlet pipe, the inner wall of the connecting pipe is fixedly connected with a filtering piece, the surface of the connecting pipe is fixedly connected with a connecting sleeve, the connecting sleeve is communicated with the connecting pipe, the inner wall of the connecting pipe is fixedly connected with the filtering piece, the inner wall of the connecting sleeve is connected with a sealing block in an inserted mode, and the surface of the sealing block is fixedly connected with a scraping plate. By arranging the auxiliary device, the glycol circulating pump can be filtered, impurities and sediments in a glycol solution can be intercepted, blockage and abrasion caused by the fact that the impurities and the sediments enter the pump are reduced, meanwhile, the filtered impurities can be conveniently cleaned, and the overall usability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glycol circulation pumps, in particular to a glycol circulation pump for natural gas gas-liquid separation. Background Technique

[0002] Glycol, usually referring to diol compounds, in industry, especially in fields such as natural gas dehydration, common glycols include ethylene glycol (EG) and triethylene glycol (TEG). Glycol has good water absorption and can absorb water to achieve purposes such as gas-liquid separation or drying. Taking triethylene glycol as an example, it is a colorless, odorless, hygroscopic viscous liquid.

[0003] A glycol circulation pump is a device used for the circulation of triethylene glycol solution in the process of natural gas gas-liquid separation. In the natural gas dehydration treatment process, due to its strong water absorption characteristics, triethylene glycol (TEG) is often used as an absorbent to remove water from natural gas. The main function of the glycol circulation pump is to transport the lean triethylene glycol solution to the top of the absorption tower, making it fully contact with natural gas. After absorbing water, it becomes a rich triethylene glycol solution; at the same time, the rich triethylene glycol solution flowing out from the bottom of the absorption tower is transported to the regeneration system for concentration. After the regenerated lean triethylene glycol solution is cooled by heat exchange, it returns to the top of the absorption tower again to complete the absorption, regeneration, and circulation process of triethylene glycol.

[0004] When the glycol circulation pump is operating in a cycle, a liquid level sensor and a frequency converter are added to automatically adjust the frequency of the frequency converter according to the change in liquid level, so that the liquid level can be well stabilized at a suitable height.

[0005] In daily work, it is found that when the existing glycol circulation pump is in use, due to impurities and precipitates in the glycol solution, it is easy to cause blockage and wear in the pump during the recycling process, thus affecting the service life of the glycol circulation pump. Furthermore, it leads to the problem that the glycol circulation pump is not convenient for filtration and is prone to blockage and wear inside the pump. Content of the Utility Model

[0006] The purpose of the utility model is to provide a glycol circulation pump for natural gas gas-liquid separation, which solves the disadvantages in the prior art that it is not convenient for filtration and is prone to blockage and wear inside the pump.

[0007] To achieve the above object, the utility model adopts the following technical solutions: A glycol circulation pump for natural gas gas-liquid separation, including a motor body, a pump body and an auxiliary device. The pump body is installed at one end of the motor body. An inlet pipe and an outlet pipe are respectively installed on the surface of the pump body. The auxiliary device is arranged on the surface of the inlet pipe. The auxiliary device includes a connecting pipe. The connecting pipe is installed at one end of the inlet pipe. A filter element is fixedly connected to the inner wall of the connecting pipe. A connecting sleeve is fixedly connected to the surface of the connecting pipe. The connecting sleeve is communicated with the connecting pipe. A filter element is fixedly connected to the inner wall of the connecting pipe. A sealing block is inserted into the inner wall of the connecting sleeve. A scraping plate is fixedly connected to the surface of the sealing block. A pressing component is arranged on the surface of the connecting sleeve. A protective component is arranged on the surface of the connecting pipe. Through the above components, when the pump body is in use, when the liquid enters the inlet pipe, the connecting pipe can cooperate with the filter element to filter impurities, thereby reducing damage to the pump body. When cleaning is required, only the sealing block needs to be pulled out. The sealing block drives the scraping plate, and the scraping plate can scrape out the impurities intercepted on the filter element. Subsequently, deep cleaning can be carried out through a cleaning tool at the opening of the connecting sleeve.

[0008] Preferably, the pressing component includes a moving frame. The moving frame is sleeved and connected with the connecting sleeve. Two pressing pieces are rotatably connected to the inner wall of the moving frame. A screw rod is fixedly connected to the surface of the connecting pipe. The moving frame is sleeved and connected with the screw rod. A movable nut is rotatably connected to the surface of the moving frame. The movable nut is threadedly connected with the screw rod. Through the above components, when pressing the sealing block, rotate the two pressing pieces in the moving frame to make the pressing pieces perpendicular to the moving frame. The movable nut can be rotated. The movable nut drives the moving frame and the pressing pieces to move in the screw rod, and the pressing pieces can press the sealing block.

[0009] Preferably, a pulling block is fixedly connected to one side surface of the sealing block. Through the above components, the pulling block facilitates pulling out the sealing block and the scraping plate, improving ease of use.

[0010] Preferably, a positioning nut is fixedly connected to the surface of the screw rod. The positioning nut has the same size as the movable nut. Through the above components, the positioning nut can play a positioning role, facilitating restricting the moving frame in cooperation with the movable nut.

[0011] Preferably, the protective component includes a connecting rope. One end of the connecting rope is fixedly connected to the surface of the connecting pipe. The other end of the connecting rope is fixedly connected to the surface of the cover plate. Through the above components, after being disassembled from the circulation pipeline, the cover plate can be inserted into the connecting pipe, which can play a role of shielding and protection.

[0012] Preferably, a magnetic ring is fixedly connected to the outer surface of the cover plate. The connecting pipe is made of iron material. The magnetic ring is magnetically connected to the connecting pipe made of iron material. After the cover plate is placed in the inner wall of the connecting pipe, the magnetic ring and the connecting pipe made of iron material are attracted to each other, which can play a fixing role.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0014] 1. In the present utility model, by setting the auxiliary device, the glycol circulating pump can be filtered, impurities and precipitates in the glycol solution can be intercepted, and the entry of the impurities into the pump can be reduced to cause blockage and wear. At the same time, it is convenient to clean the filtered impurities, and the overall usability of the equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the glycol circulating pump for natural gas gas-liquid separation proposed by the present utility model;

[0016] Figure 2 is a structural schematic diagram of the auxiliary device of the glycol circulating pump for natural gas gas-liquid separation proposed by the present utility model;

[0017] Figure 3 is the glycol circulating pump for natural gas gas-liquid separation proposed by the present utility model Figure 2 bottom view structural schematic diagram;

[0018] Figure 4 is a sectional structural schematic diagram of the auxiliary device of the glycol circulating pump for natural gas gas-liquid separation proposed by the present utility model;

[0019] Figure 5 is a partial structural schematic diagram of the auxiliary device of the glycol circulating pump for natural gas gas-liquid separation proposed by the present utility model.

[0020] LEGEND DESCRIPTION:

[0021] 1. Motor body; 2. Pump body; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Auxiliary device; 51. Connecting pipe; 52. Connecting sleeve; 53. Pressing component; 531. Moving frame; 532. Pressing piece; 533. Screw rod; 534. Positioning nut; 535. Movable nut; 54. Protection component; 541. Cover plate; 542. Magnetic ring; 543. Connecting rope; 55. Sealing block; 56. Pulling block; 57. Filter element; 58. Scraper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Please refer to Figures 1 - 5, the present utility model provides a technical solution: a glycol circulation pump for natural gas gas-liquid separation, which includes a motor body 1, a pump body 2 and an auxiliary device 5. The pump body 2 is installed at one end of the motor body 1. A liquid inlet pipe 3 and a liquid outlet pipe 4 are respectively installed on the surface of the pump body 2, and the auxiliary device 5 is arranged on the surface of the liquid inlet pipe 3.

[0023] Specifically, the auxiliary device 5 includes a connecting pipe 51. The connecting pipe 51 is installed at one end of the liquid inlet pipe 3. A filter element 57 is fixedly connected to the inner wall of the connecting pipe 51. A connecting sleeve 52 is fixedly connected to the surface of the connecting pipe 51. The connecting sleeve 52 is communicated with the connecting pipe 51. A filter element 57 is fixedly connected to the inner wall of the connecting pipe 51. A sealing block 55 is inserted into the inner wall of the connecting sleeve 52. A scraping plate 58 is fixedly connected to the surface of the sealing block 55. A pressing component 53 is arranged on the surface of the connecting sleeve 52, and a protective component 54 is arranged on the surface of the connecting pipe 51.

[0024] In this implementation scheme: when the pump body 2 is in use, when the liquid enters the liquid inlet pipe 3, the connecting pipe 51 can cooperate with the filter element 57 to filter impurities, thereby reducing damage to the pump body 2. When cleaning is required, only the sealing block 55 needs to be pulled out. The sealing block 55 drives the scraping plate 58, and the scraping plate 58 can scrape out the impurities intercepted on the filter element 57. Then, deep cleaning can be carried out through a cleaning tool at the opening of the connecting sleeve 52.

[0025] Specifically, the pressing component 53 includes a moving frame 531. The moving frame 531 is sleeved and connected with the connecting sleeve 52. Two pressing parts 532 are rotatably connected to the inner wall of the moving frame 531. A screw rod 533 is fixedly connected to the surface of the connecting pipe 51. The moving frame 531 is sleeved and connected with the screw rod 533. A movable nut 535 is rotatably connected to the surface of the moving frame 531. The movable nut 535 is threadedly connected with the screw rod 533.

[0026] In this implementation scheme: when pressing the sealing block 55, rotate the two pressing parts 532 in the moving frame 531 to make the pressing parts 532 perpendicular to the moving frame 531. The movable nut 535 can be rotated. The movable nut 535 drives the moving frame 531 and the pressing parts 532 to move in the screw rod 533, and the pressing parts 532 can press the sealing block 55.

[0027] Specifically, a pulling block 56 is fixedly connected to one side surface of the sealing block 55. The pulling block 56 is convenient for pulling out the sealing block 55 and the scraping plate 58, improving the ease of use.

[0028] Specifically, a positioning nut 534 is fixedly connected to the surface of the screw rod 533. The positioning nut 534 has the same size as the movable nut 535.

[0029] In this implementation scheme: the positioning nut 534 can play a positioning role, which is convenient for restricting the moving frame 531 in cooperation with the movable nut 535.

[0030] Specifically, the protection component 54 includes a connecting rope 543. One end of the connecting rope 543 is fixedly connected to the surface of the connecting pipe 51, and the other end of the connecting rope 543 is fixedly connected to the surface of the cover plate 541. After being disassembled from the circulation pipeline, the cover plate 541 can be inserted into the connecting pipe 51, which can play a role in shielding and protection.

[0031] Specifically, a magnetic ring 542 is fixedly connected to the outer surface of the cover plate 541. The connecting pipe 51 is made of iron material, and the magnetic ring 542 is magnetically connected to the connecting pipe 51 made of iron material.

[0032] In this implementation scheme: after the cover plate 541 is placed in the inner wall of the connecting pipe 51, the magnetic ring 542 and the connecting pipe 51 made of iron material attract each other, which can play a fixing role.

[0033] Working principle: When in use, when the motor body 1 and the pump body 2 are used in cooperation, when the liquid enters the liquid inlet pipe 3, the connecting pipe 51 can cooperate with the filter element 57 to filter impurities, thereby reducing the damage to the pump body 2. When cleaning is required, only need to rotate the movable nut 535. The movable nut 535 drives the moving frame 531 to move. After moving to a certain position, the pressing member 532 loses the restraint on the sealing block 55. Rotate the pressing member 532. After the pressing member 532 cannot be rotated anymore, the sealing block 55 can be pulled out through the pulling block 56. When the sealing block 55 is pulled out, the sealing block 55 can cooperate with the hanging member to take out a large amount of impurities filtered by the filter element 57. Other tools can also be used to clean the filter element 57 through the opening of the connecting sleeve 52. When the pump body 2 is removed for storage or transportation, the cover plate 541 can be inserted into the connecting pipe 51. The magnetic ring 542 on the outer surface of the cover plate 541 can attract the connecting pipe 51 made of iron material to achieve positioning and play a protective role.

Claims

1. A glycol circulation pump for natural gas gas-liquid separation, comprising a motor body (1), a pump body (2) and an auxiliary device (5), characterized in that: The pump body (2) is installed at one end of the motor body (1). The liquid inlet pipe (3) and the liquid outlet pipe (4) are respectively installed on the surface of the pump body (2). The auxiliary device (5) is arranged on the surface of the liquid inlet pipe (3). The auxiliary device (5) includes a connecting pipe (51). The connecting pipe (51) is installed at one end of the liquid inlet pipe (3). A filter element (57) is fixedly connected to the inner wall of the connecting pipe (51). A connecting sleeve (52) is fixedly connected to the surface of the connecting pipe (51). The connecting sleeve (52) is communicated with the connecting pipe (51). A sealing block (55) is inserted into the inner wall of the connecting sleeve (52). A scraping plate (58) is fixedly connected to the surface of the sealing block (55). A pressing component (53) is arranged on the surface of the connecting sleeve (52). A protective component (54) is arranged on the surface of the connecting pipe (51).

2. The glycol circulation pump for natural gas gas-liquid separation according to claim 1, wherein: The pressing component (53) includes a moving frame (531). The moving frame (531) is sleeved and connected with the connecting sleeve (52). Two pressing parts (532) are rotatably connected to the inner wall of the moving frame (531). A screw rod (533) is fixedly connected to the surface of the connecting pipe (51). The moving frame (531) is sleeved and connected with the screw rod (533). A movable nut (535) is rotatably connected to the surface of the moving frame (531). The movable nut (535) is threadedly connected with the screw rod (533).

3. The glycol circulation pump for natural gas gas-liquid separation according to claim 1, characterized in that: A pulling block (56) is fixedly connected to one side surface of the sealing block (55).

4. The glycol circulation pump for natural gas gas-liquid separation according to claim 2, characterized in that: A positioning nut (534) is fixedly connected to the surface of the screw rod (533). The positioning nut (534) has the same size as the movable nut (535).

5. The glycol circulation pump for natural gas gas-liquid separation according to claim 1, characterized in that: The protective component (54) includes a connecting rope (543). One end of the connecting rope (543) is fixedly connected to the surface of the connecting pipe (51). The other end of the connecting rope (543) is fixedly connected to the surface of the cover plate (541).

6. The glycol circulation pump for natural gas gas-liquid separation according to claim 5, characterized in that: A magnetic ring (542) is fixedly connected to the outer surface of the cover plate (541). The connecting pipe (51) is made of iron material. The magnetic ring (542) is magnetically connected to the connecting pipe (51) made of iron material.

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