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KR-102963401-B1 - mechanical seal

KR102963401B1KR 102963401 B1KR102963401 B1KR 102963401B1KR-102963401-B1

Abstract

The present invention relates to a mechanical seal of a new structure that can prevent damage caused by sludge introduced into the interior of the seal cover. When water is supplied into the interior of the seal cover (10) using the water supply means (30) according to the present invention, the water supplied into the interior of the seal cover (10) is discharged to the outside through the drain hole (13), thereby allowing the sludge introduced into the interior of the seal cover (10) to be discharged to the outside. Therefore, there is an advantage in that the sealing member (20) of the mechanical seal is damaged by the sludge introduced into the interior of the seal cover (10), and the sludge can be prevented from leaking out.

Inventors

  • 김경훈
  • 김민재

Assignees

  • 옵티멀에너지서비스 주식회사

Dates

Publication Date
20260511
Application Date
20250818

Claims (2)

  1. A seal cover (10) formed in a ring shape with an opening (11) through which a drive shaft (2) passes to penetrate both sides, and coupled to a through hole (1a) formed in the housing (1) of a pump, and A mechanical seal comprising a sealing member (20) provided inside the seal cover (10) to seal the gap between the opening (11) and the drive shaft (2), A water supply hole (12) for supplying water is formed on the upper side of the seal cover (10), and A drainage hole (13) is formed on the lower side of the seal cover (10), and Further including a water supply means (30) connected to the above-mentioned water supply hole (12) and supplying water into the interior of the seal cover (10) through the water supply hole (12), When water is supplied into the interior of the seal cover (10) by the above water supply means (30), the water supplied into the interior of the seal cover (10) is discharged to the outside through the drain hole (13), and the sludge introduced into the interior of the seal cover (10) is discharged to the outside. The above water supply means (30) is configured to supply water into the interior of the seal cover (10) through a water supply pipe (31) connected to the water supply hole (12), and A water pressure regulating means (41) provided in the water supply pipe (31) to maintain a constant water pressure of the water supplied into the interior of the seal cover (10) through the water supply pipe (31), and A water pressure sensor (42) provided in the seal cover (10) to measure the water pressure inside the seal cover (10), and A control means (43) that receives a signal from the above-mentioned water pressure sensor (42) and controls the operation of the above-mentioned water pressure control means (41), and It further includes an alarm means (44) connected to the above control means (43), and The above control means (43) controls the water pressure control means (41) to adjust the water pressure supplied to the interior of the seal cover (10) to a primary pressure, receives a signal from the water pressure sensor (42), and if the pressure rises above a reference pressure set lower than the primary pressure, controls the water pressure control means (41) to adjust the water pressure supplied to the interior of the seal cover (10) to a secondary pressure set higher than the primary pressure, and if the water pressure inside the seal cover (10) does not fall below the reference pressure for a preset time, activates the alarm means (44) to notify the manager that an abnormality has occurred.
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Description

mechanical seal The present invention relates to a mechanical seal of a new structure that can prevent damage caused by sludge introduced into the interior of the seal cover. Generally, desulfurization equipment for removing sulfur compounds contained in exhaust gas generated from thermal power plants is equipped with an ARP (Absorber recirculation pump) that removes the concentration by circulating a calcareous slurry. At this time, the ARP is provided with an impeller inside the housing, and the impeller is provided with a drive shaft extending to one side through a through hole (1a) formed in the housing, and is configured to rotate the impeller by rotating the drive shaft. At this time, a mechanical seal is provided between the housing and the drive shaft to prevent the slurry from leaking out of the housing. FIG. 1 illustrates an example of a mechanical seal provided in an ARP as described above. It is configured in a ring shape such that an opening (11) through which the drive shaft (2) passes is formed to penetrate both sides, and is composed of a seal cover (10) coupled to a through hole (1a) of the housing (1), and a sealing member (20) provided inside the seal cover (10) to seal the gap between the opening (11) and the drive shaft (2). The sealing member (20) is configured in a ring shape and is coupled to the opening (11) of the seal cover (10) to form a space (21) between the drive shaft (2) and the seal cover (10). However, in the case of such an ARP, when stopped, the slurry inside the housing (1) flows into the interior of the seal cover (10), that is, the space (21), through the through hole (1a) of the housing (1). When the ARP is restarted in this state where the slurry has flowed in, the sealing member (20) is damaged, and ultimately, the slurry leaks out to the outside. These problems were not limited to the mechanical seals equipped in the aforementioned ARP, but occurred in the same way in mechanical seals equipped in various places. Therefore, a new method to solve these problems became necessary. FIG. 1 is a side cross-sectional view illustrating a conventional mechanical seal, FIG. 2 is a side cross-sectional view illustrating a mechanical seal according to the present invention, FIG. 3 is a side cross-sectional view illustrating a second embodiment of a mechanical seal according to the present invention, FIG. 4 is a block diagram of a second embodiment of a mechanical seal according to the present invention. The present invention will be described in detail below with reference to the attached exemplary drawings. FIG. 2 illustrates a mechanical seal according to the present invention, which is configured in a ring shape with an opening (11) through which a drive shaft (2) passes, penetrating both sides, and is composed of a seal cover (10) coupled to a through hole (1a) formed in the housing (1) of a pump, and a sealing member (20) provided inside the seal cover (10) to seal the gap between the opening (11) and the drive shaft (2). At this time, the sealing member (20) is configured in a ring shape and is coupled to the opening (11) of the seal cover (10) to form a space (21) between the drive shaft (2) and the seal cover (10). And, according to the present invention, a water supply hole (12) for supplying water is formed on the upper side of the seal cover (10), and a drainage hole (13) is formed on the lower side of the seal cover (10). The above water supply hole (12) and drainage hole (13) are formed to penetrate the periphery of the seal cover (10) and communicate with the space (21) formed by the sealing member (20). In addition, a water supply means (30) is further provided that is connected to the water supply port (12) and supplies water into the interior of the seal cover (10) through the water supply port (12). The above water supply means (30) uses a valve that supplies tap water or a pump that supplies water stored in a water tank by pressurizing it, and is configured to supply water to the above water supply hole (12) at an appropriate pressure through the water supply pipe (31). When water is supplied into the interior of the seal cover (10) using the water supply means (30) of the mechanical seal configured in this way, the water supplied into the interior of the seal cover (10) is discharged to the outside through the drain hole (13), thereby allowing the sludge that has entered into the interior of the seal cover (10) to be discharged to the outside. Therefore, there is an advantage in that the sealing member (20) of the mechanical seal is damaged by the sludge introduced into the interior of the seal cover (10), and the sludge can be prevented from leaking out. FIGS. 3 and 4 illustrate other embodiments according to the present invention, wherein a water pressure regulating means (41) provided in the water supply pipe (31) to maintain a constant water pressure of water supplied into the interior of the seal cover (10) through the water supply pipe (31), a water p