Energy-saving condensate pump protection device

Abstract

The utility model discloses an energy-saving condensate pump protection device, which is characterized in that a mechanical sealing element sleeved on the surface of a driving shaft is fixedly mounted on the inner side wall of a pump body, a device box is fixedly mounted at the top of the pump body, a hydraulic rod and an oil storage tank are fixedly mounted in the device box, a locking mechanism is fixedly mounted on a piston shaft of the hydraulic rod, and the locking mechanism is positioned in the pump body; the locking mechanism is located above the driving shaft, the hydraulic rod controls the locking mechanism to be close to or away from the driving shaft, and the oil storage tank injects oil to the driving shaft through the locking mechanism. When the driving shaft needs to be locked, only the hydraulic rod needs to be started, the hydraulic rod pushes the semicircular locking disc to be close to the driving shaft, the driving shaft can be locked by clamping the hydraulic rod into the oil groove through the protruding teeth, the stability during follow-up motor overhauling is guaranteed, and the overhauling efficiency is improved; lubricating oil in the oil groove can permeate into the mechanical sealing piece, the lubricating effect is achieved, blocking is eradicated, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power plant equipment, and more specifically, particularly to an energy-saving condensate pump protection device. Background Art

[0002] Condensate pumps are used in thermal power plants to pump condensate. The suction side of the pump is highly vacuumed, so the pump's anti-cavitation requirements are particularly high. During use, the condensate pump will produce corresponding vibrations at the moment of starting and stopping due to the large pressure difference of water vapor. Therefore, the water pump and the motor are connected and reinforced with large-diameter bolts. However, after long-term use, the inside of the motor is easily damaged, so the motor needs to be disassembled and repaired frequently. During the maintenance process, the drive shaft of the motor lacks a locking mechanism and is prone to rotation, which affects the stability of the maintenance and increases the difficulty of the maintenance operation. At the same time, after the motor is used for a long time, the connection between the drive shaft and the water pump is also prone to clogging and rusting by impurities, and the drive shaft is prone to jamming, resulting in increased motor energy consumption. Utility Model Content

[0003] The utility model aims to provide an energy-saving condensate pump protection device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an energy-saving condensate pump protection device, comprising a base, on which a motor and a pump body are fixedly installed, a drive shaft is installed between the motor and the pump body, one end of the drive shaft is inserted into the pump body, and an impeller is fixedly installed at one end of the drive shaft located inside the pump body, a mechanical seal sleeved on the surface of the drive shaft is fixedly installed on the inner wall of the pump body, a device box is fixedly installed on the top of the pump body, a hydraulic rod and an oil storage tank are fixedly installed inside the device box, a locking mechanism is fixedly installed on the piston shaft of the hydraulic rod, the locking mechanism is located in the pump body, and the locking mechanism is located above the drive shaft, the hydraulic rod approaches or moves away from the drive shaft by controlling the locking mechanism, and the oil storage tank injects oil into the drive shaft through the locking mechanism.

[0005] Preferably, a plurality of oil grooves are provided on the surface of the drive shaft at the position of the locking mechanism.

[0006] Preferably, the locking mechanism includes a semicircular locking disk and a top column, and the inner surface of the semicircular locking disk is evenly and fixedly provided with a plurality of protruding teeth whose sizes correspond to the cross-sectional sizes of the oil groove. The top column is fixedly installed on the upper part of the semicircular locking disk, and the upper end of the top column is fixedly connected to the piston shaft of the hydraulic rod.

[0007] Preferably, a bottom support column is fixedly installed at the bottom of the pump body, the position of the bottom support column is aligned with the top column, and the bottom support column is used to support the drive shaft.

[0008] Preferably, an oil hole penetrating the protruding teeth is opened inside the top column, and an electromagnetic valve is installed at the oil outlet of the oil storage tank, and the electromagnetic valve is connected to the oil hole through a hose.

[0009] Preferably, a filter box is installed on the water inlet pipe of the pump body, and a filter net is installed in the filter box.

[0010] Preferably, one end of the oil groove extends into the mechanical seal.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] When the utility model needs to lock the driving shaft, it only needs to start the hydraulic rod, which will push the semicircular locking plate close to the driving shaft, and the driving shaft can be locked by the protruding teeth engaging with the oil groove, thereby ensuring the stability during subsequent motor maintenance and improving the maintenance efficiency. At the same time, the lubricant in the oil storage tank will be injected into the oil groove through the oil hole, and when the driving shaft rotates subsequently, the lubricating oil in the oil groove can penetrate into the mechanical seal to play a lubricating role, thereby preventing jamming and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a structural diagram of an energy-saving condensate pump protection device of the utility model;

[0015] Figure 2 It is a cross-sectional view of the pump body of the utility model;

[0016] Figure 3 It is a structural diagram of a semicircular locking disc of the utility model.

[0017] In the figure: 1 base, 2 motor, 3 drive shaft, 31 impeller, 32 oil tank, 4 pump body, 41 water inlet pipe, 5 device box, 51 hydraulic rod, 52 oil storage tank, 53 solenoid valve, 6 filter box, 7 mechanical seal, 8 bottom support column, 9 semicircular locking plate, 91 top column, 92 oil hole, 93 protruding teeth. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] See also Figure 1and Figure 2 As shown, the utility model provides an energy-saving condensate pump protection device, including a base 1, on which a motor 2 and a pump body 4 are fixedly mounted, a drive shaft 3 is installed between the motor 2 and the pump body 4, one end of the drive shaft 3 is inserted in the pump body 4, and an impeller 31 is fixedly installed at one end of the drive shaft 3 located inside the pump body 4, a mechanical seal 7 sleeved on the surface of the drive shaft 3 is fixedly installed on the inner wall of the pump body 4, a device box 5 is fixedly installed on the top of the pump body 4, a hydraulic rod 51 and an oil storage tank 52 are fixedly installed inside the device box 5, a piston shaft of the hydraulic rod 51 is fixedly mounted with a locking mechanism, the locking mechanism is located in the pump body 4, and the locking mechanism is located above the drive shaft 3, the hydraulic rod 51 controls the locking mechanism to approach or move away from the drive shaft 3, and the oil storage tank 52 is filled with oil to the drive shaft 3 through the locking mechanism, the oil storage tank 52 is used to store lubricating oil, and in order to facilitate the addition of lubricating oil and ensure the internal pressure balance of the oil storage tank 52, a regulating air valve and an oil filling joint are provided on the oil storage tank 52.

[0020] In order to improve the locking stability and ensure that the lubricating oil can adhere to the driving shaft 3 for a long time, in this embodiment, a plurality of oil grooves 32 are provided on the surface of the driving shaft 3 at the position of the locking mechanism.

[0021] See also Figure 3 As shown, in this embodiment, the locking mechanism includes a semicircular locking disk 9 and a top column 91. The inner surface of the semicircular locking disk 9 is evenly and fixedly provided with a plurality of protruding teeth 93 whose sizes correspond to the cross-sectional sizes of the oil groove 32. The specific shape and inclination angle of the protruding teeth 93 only need to be able to be smoothly inserted into the oil groove 32. The top column 91 is fixedly installed on the upper part of the semicircular locking disk 9, and the upper end of the top column 92 is fixedly connected to the piston shaft of the hydraulic rod 51.

[0022] Furthermore, in order to prevent the semicircular locking plate 9 from squeezing the drive shaft 3 and causing deformation of the drive shaft 3, in this embodiment, a bottom support column 8 is fixedly installed at the bottom of the pump body 4, and the position of the bottom support column 8 is aligned with the top column 91. The bottom support column 8 is used to support the drive shaft 3.

[0023] Furthermore, in this embodiment, an oil hole 92 penetrating the protruding tooth 93 is opened inside the top column 91, and a solenoid valve 53 is installed at the oil outlet of the oil storage tank 52. The solenoid valve 53 is connected to the oil hole 92 through a hose. When the solenoid valve 52 is started, the lubrication in the oil storage tank 52 is injected into the oil tank 32 through the oil hole 92.

[0024] Furthermore, in order to reduce the entry of impurities into the pump body 4, in this embodiment, a filter box 6 is installed on the water inlet pipe 41 of the pump body 31, and a filter net is installed in the filter box 5, and the filter net can filter impurities.

[0025] Furthermore, in order to ensure that the lubricating oil in the oil groove 32 can smoothly penetrate into the mechanical seal 7 , in this embodiment, one end of the oil groove 32 extends into the mechanical seal 7 .

[0026] The specific operation steps are as follows: when the drive shaft 3 needs to be locked, just start the hydraulic rod 51, the hydraulic rod 51 will push the semicircular locking disk 9 close to the drive shaft 3, and the drive shaft 3 can be locked by the protruding teeth 93 being engaged in the oil groove 32. At the same time, start the solenoid valve 52, and the lubricant in the oil storage tank 52 will be injected into the oil groove 32 through the oil hole 92. When the drive shaft 3 rotates subsequently, the lubricating oil in the oil groove 32 can penetrate into the mechanical seal 7 to play a lubricating role, eliminate jamming, and reduce energy consumption.

[0027] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described in the claims of the present invention, they should be within the protection scope of the present invention.

Claims

1. An energy-saving condensate pump protection device, comprising a base, on which a motor and a pump body are fixedly mounted, and a drive shaft is installed between the motor and the pump body, characterized in that: One end of the drive shaft is inserted into the pump body, and an impeller is fixedly installed at one end of the drive shaft located inside the pump body. A mechanical seal sleeved on the surface of the drive shaft is fixedly installed on the inner wall of the pump body, and a device box is fixedly installed on the top of the pump body. A hydraulic rod and an oil storage tank are fixedly installed inside the device box. A locking mechanism is fixedly installed on the piston shaft of the hydraulic rod. The locking mechanism is located in the pump body and above the drive shaft. The hydraulic rod approaches or moves away from the drive shaft by controlling the locking mechanism, and the oil storage tank injects oil into the drive shaft through the locking mechanism.

2. The energy-saving condensate pump protection device according to claim 1 is characterized in that: The surface of the driving shaft is provided with a plurality of oil grooves at the position of the locking mechanism.

3. The energy-saving condensate pump protection device according to claim 2 is characterized in that: The locking mechanism includes a semicircular locking disk and a top column. The inner surface of the semicircular locking disk is evenly and fixedly provided with a plurality of protruding teeth with sizes corresponding to the cross-sectional sizes of the oil groove. The top column is fixedly installed on the upper part of the semicircular locking disk, and the upper end of the top column is fixedly connected to the piston shaft of the hydraulic rod.

4. The energy-saving condensate pump protection device according to claim 3 is characterized in that: A bottom support column is fixedly installed at the bottom of the pump body, the position of the bottom support column is aligned with the top column, and the bottom support column is used to support the driving shaft.

5. The energy-saving condensate pump protection device according to claim 3 is characterized in that: An oil hole penetrating the protruding teeth is provided inside the top column, and an electromagnetic valve is installed at the oil outlet of the oil storage tank, and the electromagnetic valve is connected to the oil hole through a hose.

6. The energy-saving condensate pump protection device according to claim 1 is characterized in that: A filter box is installed on the water inlet pipe of the pump body, and a filter net is installed in the filter box.

7. The energy-saving condensate pump protection device according to claim 2 is characterized in that: One end of the oil groove extends into the mechanical seal.

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