Descaling device for cooling water pipe of condenser

Abstract

A descaling device for a cooling water pipe of a condenser comprises a drill bit, a cutter bar and a spiral shaft, the drill bit is fixedly connected with the cutter bar, the spiral shaft is rotationally connected with the inner side of the cutter bar, and the descaling device is used for removing dirt on the cooling water pipe of the condenser and can effectively remove the most stubborn water scale (calcium carbonate), rust, oil dirt, slime and other sediments generated in water equipment. Meanwhile, no harm is caused to the human body, no other harmful reactions such as erosion, pitting corrosion and oxidation are caused to materials such as steel, red copper, nickel, titanium, rubber, plastic, fiber, glass and ceramic, and the service life of equipment can be greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of power generation, in particular to a descaling device for cooling water pipes of a condenser. Background Art

[0002] Condensing steam turbine is a typical turbine widely used in modern thermal power plants and nuclear power plants. Condensing equipment is an important part of the steam turbine device, and it plays the role of a cold source in the thermal cycle of the steam turbine device. Reducing the exhaust temperature and exhaust pressure of the steam turbine can improve the efficiency of the thermal cycle. The main functions of the condenser are to establish and maintain a high vacuum at the exhaust port of the steam turbine, and to use the water condensed from the exhaust of the steam turbine as boiler feed water to form a complete cycle. The condenser maintains a high vacuum by exchanging heat with the circulating water. If the vacuum of the condenser is too low, it will seriously affect the safe and economic operation of the power plant unit. One of the important reasons for the low vacuum of the condenser is the scaling of the condenser cooling water pipe. The scaling of the condenser has a great influence on the performance of the condenser. It not only increases the end difference of the steam turbine, but also reduces the vacuum of the steam turbine and increases the exhaust temperature, affecting the economy and safety of the steam turbine. Regular descaling of the condenser cooling water pipe is an important content. There are many traditional descaling methods, such as mechanical methods (scraping, brushing), high-pressure water, chemical cleaning (pickling), etc. The chemical cleaning method cannot completely remove scale and other deposits. The acid corrodes the equipment and forms holes. The residual acid causes secondary corrosion or under-scale corrosion to the material, which eventually leads to equipment replacement. In addition, the cleaning waste liquid is toxic and requires a lot of money for wastewater treatment. The traditional scraping and brushing method of descaling will cause some damage to the condenser cooling water pipe, and the dirt cannot be completely discharged. A device is needed to solve the above problems. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a plurality of tapered blades for simultaneous cutting, a plurality of polishing blades for correction and guidance, and synchronous removal of dirt, which can effectively remove the most stubborn scale (calcium carbonate), rust, grease, mud and other sediments generated in water-using equipment without causing harm to the human body, and will not cause erosion, pitting, oxidation and other harmful reactions to materials such as steel, copper, nickel, titanium, rubber, plastic, fiber, glass, ceramics, etc., and can greatly extend the life of the equipment.

[0004] The utility model discloses a descaling device for cooling water pipes of a condenser.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A descaling device for cooling water pipes of a condenser comprises a drill bit, a cutter rod and a spiral shaft. The drill bit is fixedly connected to the cutter rod, and the spiral shaft is rotatably connected to the inner side of the cutter rod.

[0007] The drill bit has a drill hole on the inner side, a drill countersink on one side of the drill hole, a cone head on one side of the drill bit, three evenly distributed inclined cutting edges on the surface of the cone head, three evenly distributed inclined wiper edges on the surface of the drill bit, the corresponding cutting edges and wiper edges are connected to each other, and the cone head and wiper edges at the same position have chip leakage grooves running through the drill hole on the inner sides.

[0008] The tool rod has a tool rod hole in the middle, a mounting handle on one side of the tool rod, the mounting handle is fixedly connected to the drill countersunk hole, a shaft sleeve is provided on the other side of the tool rod, a box body is provided outside the shaft sleeve, the shaft sleeve is rotatably connected to the box body, a No. 2 gear is provided on one side of the shaft sleeve, the No. 2 gear is fixedly connected to the shaft sleeve, and a group of chip outlets are provided on one side of the tool rod, and the chip outlets are close to one side of the shaft sleeve.

[0009] The outer side of the spiral shaft is provided with a spiral blade, and the spiral blade is rotatably connected to the drill hole and the tool rod hole. A gear is arranged on one side of the spiral shaft, and the gear is fixedly connected to the spiral shaft.

[0010] One side of the box body is provided with a No. 1 hole, which is rotatably connected to the knife rod hole. The upper part of the No. 1 hole is provided with a No. 2 hole, and a shaft is arranged inside the No. 2 hole, and the shaft is rotatably connected to the No. 2 hole. A No. 1 gear and a No. 3 gear are arranged outside the No. 2 hole, and the No. 1 gear and the No. 3 gear are fixedly connected to the shaft, and the No. 1 gear and the gear are meshed with each other, and the No. 3 gear and the gear are meshed with each other. The outside of the box body is provided with a motor seat, and the side of the motor seat is fixedly connected to the motor, and the motor outputs a shaft. There are handrails on both sides of the box body.

[0011] Beneficial effect: When using this device, hold the handrails on both sides with both hands, aim the box at the condenser cooling water pipe that needs to be cleaned, start the motor, the motor rotation drives the shaft rotation, the shaft rotation drives the No. 1 gear and the No. 3 gear rotation, the No. 1 gear rotation drives the No. 2 gear rotation, the No. 2 gear rotation drives the cutter bar rotation, the No. 3 gear rotation drives the gear rotation, the gear rotation drives the spiral shaft rotation, because the transmission ratio of the No. 3 gear and the gear is greater than the transmission ratio of the No. 1 gear and the No. 2 gear, all the spiral shaft rotation speeds are greater than the rotation speed of the cutter bar, and the cutter bar rotation The drill bit is driven to rotate. When the drill bit rotates, the three cutting edges first start to cut the dirt. The cut dirt falls from the corresponding chip leakage groove to the spiral shaft inside the drill bit. During the rotation of the spiral shaft, the dirt is transported backward along the drill bit hole and the tool rod hole. The transported dirt flows out from the chip outlet. When the cone head completely enters the condenser cooling water pipe, the three wiper blades start to polish the inside of the condenser cooling water pipe, and finally clean the dirt remaining in the condenser cooling water pipe. The three wiper blades and the tool rod simultaneously play a guiding role to prevent the device from tilting.

[0012] The cutting edge of the device is composed of three groups of connected cutting edges and wiper edges. The three cutting edges are arranged in a cone shape and have a certain inclination. When removing dirt, the three cutting edges cut the dirt in layers and gradually advance, so the cutting force is smaller, and the condenser cooling water pipe will not be damaged due to excessive cutting force. In the process of pushing the drill bit forward, the three inclined wiper edges finally cut the remaining dirt and clean it thoroughly. The three wiper edges and the cutter bar play a guiding role to prevent the device from tilting during the forward pushing process and damaging the condenser cooling water pipe. The cut dirt falls from the corresponding chip leakage groove onto the spiral shaft inside the drill bit. During the rotation of the spiral shaft, the dirt is transported backward along the drill bit hole and the cutter bar hole, and the transported dirt flows out from the chip outlet to prevent the dirt from clogging the condenser cooling water pipe again, or the condenser cooling water pipe is damaged or the device cannot be advanced due to dirt clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic structural diagram of a condenser cooling water pipe descaling device.

[0014] Figure 2 This is a schematic diagram of the drill bit structure of the utility model.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the drill bit described in the utility model.

[0016] Figure 4 This is a schematic diagram of the knife bar structure described in the utility model.

[0017] Figure 5 This is a schematic diagram of the box structure described in the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0019] refer to Figure 1 A descaling device for cooling water pipes of a condenser includes a drill bit 110, a cutter rod 120, and a spiral shaft 130. The drill bit 110 is fixedly connected to the cutter rod 120, and the spiral shaft 130 is rotatably connected to the inner side of the cutter rod 120.

[0020] refer to Figure 2 The drill bit 110 has a drill hole 115 on the inner side, a drill countersunk hole 116 on one side of the drill hole 115, a cone head 111 on one side of the drill bit 110, three evenly distributed inclined cutting edges 112 on the surface of the cone head 111, and three evenly distributed inclined wiper edges 113 on the surface of the drill bit 110. The corresponding cutting edges 112 and wiper edges 113 are connected to each other, and the cone head 111 and the wiper edge 113 at the same position have a chip leakage groove 114 penetrating the drill hole 115 on the inner side.

[0021] refer to Figure 4 The tool rod 120 has a tool rod hole 121 in the middle, and a mounting handle 123 on one side of the tool rod 120. The mounting handle 123 is fixedly connected to the drill countersunk hole 116. The tool rod 120 has a sleeve 122 on the other side. A box body 140 is arranged outside the sleeve 122. The sleeve 122 is rotatably connected to the box body 140. A second gear 170 is arranged on one side of the sleeve 122. The second gear 170 is fixedly connected to the sleeve 122. A group of chip outlets 124 are arranged on one side of the tool rod 120, and the chip outlets 124 are close to one side of the sleeve 122.

[0022] refer to Figure 1 The outer side of the spiral shaft 130 has a spiral blade 131, and the spiral blade 131 is rotatably connected to the drill hole 115 and the arbor hole 121. A gear 190 is set on one side of the spiral shaft 130, and the gear 190 is fixedly connected to the spiral shaft 130.

[0023] refer to Figure 5 A No. 1 hole 141 is provided on one side of the box body 140, and the No. 1 hole 141 is rotatably connected to the knife rod hole 121. A No. 2 hole 142 is provided on the upper part of the No. 1 hole 141. A shaft 150 is arranged inside the No. 2 hole 142, and the shaft 150 is rotatably connected to the No. 2 hole 142. A No. 1 gear 160 and a No. 3 gear 180 are arranged on the outer side of the No. 2 hole 142. The No. 1 gear 160 and the No. 3 gear 180 are fixedly connected to the shaft 150. The No. 1 gear 160 and the gear 190 are meshed with each other, and the No. 3 gear 180 and the gear 190 are meshed with each other. A motor seat 143 is provided on the outer side of the box body 140, and a motor 210 is fixedly connected to the side of the motor seat 143. The motor 210 outputs the shaft 150. There are handrails 144 on both sides of the box body 140.

[0024] When using the device, hold the handrails 144 on both sides with both hands, aim the box 140 at the condenser cooling water pipe that needs to be cleaned, start the motor 210, the rotation of the motor 210 drives the shaft 150 to rotate, the rotation of the shaft 150 drives the No. 1 gear 160 and the No. 3 gear 180 to rotate, the rotation of the No. 1 gear 160 drives the No. 2 gear 170 to rotate, the rotation of the No. 2 gear 170 drives the cutter bar 120 to rotate, the rotation of the No. 3 gear 180 drives the gear 190 to rotate, the rotation of the gear 190 drives the screw shaft 130 to rotate, because the transmission ratio of the No. 3 gear 180 and the gear 190 is greater than the transmission ratio of the No. 1 gear 160 and the No. 2 gear 170, the rotation speed of all screw shafts 130 is greater than the rotation speed of the cutter bar 120. When the tool rod 120 rotates, it drives the drill bit 110 to rotate. When the drill bit 110 rotates, the three cutting edges 112 first start to cut the dirt, and the cut dirt falls from the corresponding chip leakage groove 114 to the spiral shaft 130 inside the drill bit 110. During the rotation of the spiral shaft 130, the dirt is transported backward along the drill hole 115 and the tool rod hole 121, and the transported dirt flows out from the chip outlet 124. When the cone head 111 completely enters the condenser cooling water pipe, the three wiper blades 113 start to polish the inside of the condenser cooling water pipe, and finally clean the dirt remaining in the condenser cooling water pipe. The three wiper blades 113 and the tool rod 120 simultaneously play a guiding role to prevent the device from tilting.

[0025] The cutting edge of the device is composed of three groups of connected cutting edges 112 and wiper blades 113. The three cutting edges 112 are arranged in a cone shape and have a certain inclination. When cleaning the dirt, the three cutting edges 112 cut the dirt in a layered and gradually advancing manner, which has a smaller cutting force and will not cause damage to the condenser cooling water pipe due to excessive cutting force. When the drill bit 110 is pushed forward, the three inclined wiper blades 113 finally cut the remaining dirt and clean it thoroughly. The three wiper blades 113 and the tool bar 12 0 plays a guiding role to prevent the device from tilting during the forward pushing process, thereby preventing the condenser cooling water pipe from being damaged. The cut dirt falls from the corresponding chip leakage groove 114 onto the spiral shaft 130 inside the drill bit 110. During the rotation of the spiral shaft 130, the dirt is transported backward along the drill hole 115 and the tool rod hole 121. The transported dirt flows out from the chip outlet 124 to prevent the dirt from clogging the condenser cooling water pipe again, or causing damage to the condenser cooling water pipe or the device being unable to be pushed forward due to the dirt clogging.

Claims

1. A condenser cooling water pipe descaling device, comprising a drill bit, a cutter rod, and a spiral shaft, characterized in that : The drill bit is fixedly connected to the tool rod, and the spiral shaft is rotatably connected to the inner side of the tool rod. The inner side of the drill bit is provided with a drill hole, one side of the drill hole is provided with a drill countersunk hole, one side of the drill bit is provided with a cone head, the surface of the cone head is provided with three evenly distributed inclined cutting edges, the surface of the drill bit is provided with three evenly distributed inclined wiper edges, the corresponding cutting edges and wiper edges are connected to each other, and the inner sides of the cone head and wiper edges at the same position are provided with a chip leakage groove penetrating the drill hole.

2. A condenser cooling water pipe descaling device according to claim 1, characterized in that : The tool rod has a tool rod hole in the middle, and a mounting handle is provided on one side of the tool rod. The mounting handle is fixedly connected to the drill countersunk hole. The other side of the tool rod has a sleeve. A box body is provided outside the sleeve. The sleeve is rotatably connected to the box body. A No. 2 gear is provided on one side of the sleeve. The No. 2 gear is fixedly connected to the sleeve. A group of chip outlets are provided on one side of the tool rod, and the chip outlets are close to one side of the sleeve.

3. A condenser cooling water pipe descaling device according to claim 1, characterized in that : A spiral blade is provided on the outer side of the spiral shaft, and the spiral blade is rotatably connected to the drill hole and the tool rod hole. A gear is arranged on one side of the spiral shaft, and the gear is fixedly connected to the spiral shaft.

4. A condenser cooling water pipe descaling device according to claim 2, characterized in that : A No. 1 hole is provided on one side of the box body, and the No. 1 hole is rotatably connected to the knife rod hole. A No. 2 hole is provided on the upper part of the No. 1 hole, and a shaft is arranged inside the No. 2 hole, and the shaft is rotatably connected to the No. 2 hole. A No. 1 gear and a No. 3 gear are arranged on the outer side of the No. 2 hole, and the No. 1 gear and the No. 3 gear are fixedly connected to the shaft, and the No. 1 gear and the gear are meshed with each other, and the No. 3 gear and the gear are meshed with each other. A motor seat is provided on the outer side of the box body, and a motor is fixedly connected to the side of the motor seat, and the motor output shaft is provided. There are handrails on both sides of the box body.

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