Device for cleaning scale in ship condenser pipe based on cavitation jet flow

Abstract

The utility model relates to the field of equipment cleaning, in particular to a device for cleaning scale in a ship condenser pipe based on cavitation jet flow. Comprising a bubble dense array device. The bubble generating device comprises a driving motor, a driving shaft, a transverse connecting rod, a propeller, a transmission shaft, an air pump, a check valve and an air pipe; the device is divided into a first cavity and a second cavity, a driving motor arranged in the first cavity is divided into two paths of driving output, the first path of output end sequentially passes through a driving shaft and a transverse connecting rod for transmission output, the tail end, away from the driving motor, of the transverse connecting rod extends into the space of the second cavity, and a propeller is arranged at the tail end of the transverse connecting rod; the second output end sequentially passes through a transmission shaft and an air pump for transmission output, the air outlet end of the air pump extends into the second cavity through an air pipe, an air outlet of the air pipe is located below the propeller, and a check valve is arranged on the air pipe; the scale removing effect on the tubular object is good, and the scale removing device is suitable for scale removing operation on the inner wall of any tubular object. The structure is simple, movement is convenient, and occupied space is small.

Description

Technical Field

[0001] The utility model relates to the field of equipment cleaning, and particularly relates to a device for cleaning scale in the pipes of a ship condenser based on cavitating jet. Background Art

[0002] A ship condenser is a device for a refrigeration system to release heat to the surrounding environment and is one of the four major components of a ship refrigeration system. Its main function is to quickly condense high-temperature refrigerant vapor into a liquid and dissipate heat externally to ensure a suitable temperature in the ship's environment. The condenser directly affects the refrigeration efficiency and is related to the operation of the entire ship's equipment and the safety of personnel. And the fouling and blockage of the condenser are one of the important reasons for low refrigeration efficiency; it is necessary to clean the condenser regularly to ensure its normal and safe use.

[0003] The cleaning of scale in the pipes of a ship condenser belongs to physical and chemical cleaning methods. Chemical reagent formulations are made according to the composition of the scale, and appropriate cleaning reagents are prepared for soaking or cleaning, and high-pressure water, ultrasonic waves, etc. are used to clean the scale. However, technologies such as high-pressure water and ultrasonic waves only have obvious cleaning effects on the part near the pipe orifice, and have poor cleaning effects on the scale in the middle part of the pipe, and it is difficult to clean the scale in the pipe completely. In addition, there are alternative solutions such as mechanical brushes, but this method is likely to cause incomplete cleaning or damage to the pipe wall, resulting in accelerated scale accumulation in the follow-up. Therefore, there is a lack of an efficient and convenient cleaning device in this field to ensure the cleaning effect and expected use of the ship condenser.

[0004] Existing cleaning and maintenance methods (including high-pressure water, ultrasonic waves, mechanical brushes, etc.) for condenser cleaning either have incomplete cleaning, or cause damage to the pipe wall, or are time-consuming, laborious and require a large economic investment.

[0005] Considering the difficulty in cleaning the inside of the pipe and the irregular appearance of the pipe scale, two cleaning errors are likely to occur during the cavitating jet cleaning process: one is the cleaning error introduced by the non-correspondence between the position of the bubble explosion and the position of the pipe scale; the other is the cleaning error of the bubble explosion introduced by the height of the liquid level of the reagent. Close to the bubble explosion part, the cleaning effect is good, and below the liquid level, far from the bubble explosion part, the cleaning effect gradually becomes worse.

[0006] Therefore, it is necessary to provide a new device for cleaning scale in the pipes of a condenser to solve the above technical problems. Content of the Utility Model

[0007] The present utility model provides a device for cleaning scale in the pipes of a ship condenser based on cavitating jet. The specific scheme is as follows: A device for cleaning scale in the pipes of a ship condenser based on cavitating jet, comprising:

[0008] A bubble dense array device, which is composed of uniformly arranged and combined bubble holes carried on a plate body;

[0009] Bubble generating device, the bubble generating device includes a driving motor, a driving shaft, a lateral connecting rod, a propeller, a transmission shaft, an air pump, a check valve and an air pipe; the area where the bubble generating device is located is divided into a first cavity and a second cavity, the driving motor is arranged in the first cavity, the driving of the driving motor is divided into two driving outputs, the first output end is sequentially transmitted through the driving shaft and the lateral connecting rod, the end of the lateral connecting rod away from the driving motor extends into the space of the second cavity, and the propeller is arranged at the end of the lateral connecting rod; the second output end is sequentially transmitted through the transmission shaft and the air pump, the air outlet end of the air pump extends into the second cavity through the air pipe, the air outlet of the air pipe is located below the propeller, and the check valve is arranged on the air pipe;

[0010] The bubble dense array device is located in the second cavity, arranged above the propeller, and there is a liquid collection space from the upper surface of the second cavity. A slow medicine discharge hole is opened on the outer side wall of the second cavity near the upper surface of the bubble dense array device.

[0011] Further, the bubble dense array device includes a bubble size adjustment structure, which is formed by stacking two or more plate bodies arranged in an interleaved manner. Adjacent two plates can slide along the stacking surface, and there is at least one position where the bubble holes of different plates correspond and coincide one by one.

[0012] Further, the bubble dense array device is made of anti-corrosion and acid-resistant materials.

[0013] Further, a gear shift key is arranged on the driving motor, and a gear lever is also arranged on the lateral connecting rod. The gear lever is used to adjust the angle between the propeller blades and the axis of the lateral connecting rod.

[0014] Further, a handle is arranged on the outer side wall of the second cavity.

[0015] Further, a special-shaped part positioning fixture is arranged in the second cavity.

[0016] This technical solution can adopt a pinhole-type bubble dense array with a diameter of millimeter level, add an auxiliary slow medicine discharge hole. As the medicine is slowly discharged, the liquid level of the medicine drops, and the position of the bubble air explosion also drops. Just check the cleaning situation of the tube scale with the naked eye, and repeat the cleaning operation until the tube wall is basically clean without scale and no obvious tube scale can be observed with the naked eye, reducing the above two errors. The condenser tube is cleaned throughout. Since the air explosion energy of the bubble is the largest at the liquid level, only need to submerge the liquid level over the condenser waiting for cleaning equipment. As the medicine discharge hole is opened and the liquid level drops, the tube can be cleaned throughout, which is simple and effective.

[0017] The utility model also has the following beneficial effects: the tubular object has a good descaling effect: the pinhole-type bubble dense array can continuously generate a large number of energy bubbles of required size, forming an energy network sufficient to remove scale, and has a good descaling effect.

[0018] Applicable to the cleaning of the inner wall of any tubular object. The multi-gear drive motor, adjustable propeller and dual-axis independent control design can form energy bubbles of small quantity and size. The design and adjustment can be made according to the size of the condenser to be cleaned, and it is suitable for cleaning the inner wall of any diameter tubular object.

[0019] Simple structure, easy to move, small space occupation. The device basically consists of a bubble generating device and a bubble dense array device. It has a simple structure, is portable, occupies a small area, and does not require a special site or special electricity requirements.

[0020] Easy to transform, convenient for other fields of descaling applications. Due to the simplicity of the structure, it is suitable for improvements in other descaling fields, such as vegetable washing, etc., mobile descaling devices, etc., which can be realized by slightly improving and combining the present utility model.

[0021] Therefore, the pinhole bubble dense array tube wall cleaning device based on cavitation jet has outstanding advantages and positive effects in the field of tube wall cleaning such as condensers. It can provide full-process cleaning and high-efficiency cleaning results in the tube, covering a wide range of tubular cleaning fields, with advantages such as simple structure, easy to move and operate, and showing excellent easy improvement and integration capabilities with other fields. This makes the device have broad application prospects in tubular inner wall cleaning and other aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the device of Example 1;

[0023] Figure 2 for Figure 1 A perspective view of the internal structure;

[0024] Figure 3 for Figure 1 Left view of

[0025] Figure 4 for Figure 1 Right view of;

[0026] Figure 5 Schematic diagram of a device for adjusting the size of a dense array of bubbles;

[0027] Figure 6 for Figure 5 A side view of the device;

[0028] Reference numerals: 1 second cavity, 11 portable handle; 12 slow drug release hole, 2 first cavity, 21 drive motor, 22 drive shaft, 23 transverse link, 24 propeller, 25 gear button, 26 gear lever, 27 bubble dense array device, 28 drive shaft, 29 air pump, 210 check valve, 211 air pipe. Detailed implementation manners

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0031] In addition, the terms "first", "second", a, b, c, d, e, f, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] Embodiment 1

[0033] Reference Figure 1 and Figure 2 This embodiment provides a device for cleaning scale in a ship condenser tube based on cavitation jet, including a bubble dense array device 27, and the bubble dense array device 27 is composed of uniformly arranged and combined bubble holes carried on a plate body;

[0034] Bubble generating device, the bubble generating device includes a driving motor 21, a driving shaft 22, a lateral connecting rod 23, a propeller 24, a transmission shaft 28, an air pump 29, a check valve 210 and an air pipe 211; the area where the bubble generating device is located is divided into a first cavity 2 and a second cavity 1. The driving motor 21 is arranged in the first cavity 2. The transmission of the driving motor 21 is divided into two paths for driving. The transmission of the driving motor 21 is divided into two paths for driving output. The first output end is sequentially transmitted through the driving shaft 22 and the lateral connecting rod 23. The end of the lateral connecting rod 23 away from the driving motor 21 extends into the space of the second cavity 1, and a propeller 24 is arranged at the end of the lateral connecting rod 23; the second output end is sequentially transmitted through the transmission shaft 28 and the air pump 29. The air outlet end of the air pump 29 extends into the second cavity 1 through the air pipe 211. The air outlet of the air pipe 211 is located below the propeller 24, and a check valve 210 is arranged on the air pipe 211; the bubble dense array device 27 is located in the second cavity 1, arranged above the propeller 24, and there is a liquid collection space from the upper surface of the second cavity 1. When in use, a cleaning liquid will be injected into the second cavity. A slow medicine discharging hole 12 is opened on the outer side wall of the second cavity 1 near the upper surface of the bubble dense array device 27. It is used to adjust the liquid level height of the cleaning liquid, and it will be slowly lowered according to needs when in use.

[0035] The bubble dense array device 27 includes a bubble size adjustment structure, which is formed by stacking two or more plate bodies arranged in an alternating manner. Adjacent two plate materials can slide along the stacking surface, and there is at least one position where the bubble holes of different plate materials coincide in position one by one. Refer to Figure 5 and Figure 6 。

[0036] The plate body of the bubble dense array device 27 is made of anti-corrosion and acid-resistant materials.

[0037] A gear shift key 25 is arranged on the driving motor 21 for adjusting the rotation speed of the driving motor; a gear lever 26 is also arranged on the lateral connecting rod 23, and the gear lever 26 is used to adjust the angle between the blades of the propeller 24 and the axis of the lateral connecting rod 23. A handle 11 is arranged on the outer side wall of the second cavity 1. An irregular part positioning fixture is arranged in the second cavity 1 to assist in supporting and positioning when cleaning irregular tools.

[0038] All structural units of the pinhole type bubble dense array tube descaling device based on cavitation jet are as Figure 3 、 4 shown. Use the energy generated by the cavitation explosion of continuous dense bubbles at the liquid surface to remove the tube scale of condensers and the like soaked in the liquid medicine.

[0039] The first cavity 2, Figure 2The left part of the middle is used to place the condenser and other components waiting to be cleaned. The bubble dense array can adopt a pluggable or fixed structure, and it is necessary to add anti-corrosion and acid-base resistant gaskets to ensure the seal with the box body. Water or other cleaning agents are placed in the second cavity 1, which is used to soak the pipe scale and the medium for generating dense bubbles. Its slow medicine discharging hole 12 is used to release agents such as water, gradually reducing the cleaning scale surface until the whole process is cleaned. The driving motor adopts a double-shaft driving motor, which is sealed by a partition board and is respectively connected to the propeller 24 through the driving shaft 22 and the air pump 29 through the transmission shaft 28 to prevent water and other agents from corroding and polluting the driving motor 21. The transverse connecting rod 23, the driving shaft 22, the propeller 24, and the transmission shaft 28 are all made of anti-corrosion and acid-base resistant materials. The propeller 24 is connected to the gear lever 26 by the transverse connecting rod 23, which is used to control the opening and closing angle of the propeller 24, and then control the angle between the propeller 24 and the water section to obtain bubbles of different sizes. The driving motor 21 is used to control the rotation speed of the propeller 24 to obtain different numbers of bubbles. The air pump 29 is used to control the air filling volume and speed in the generating device box body. The air pump 29 can select a single pump or multiple pumps according to the required bubble generation amount.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for cleaning scale in the condenser tubes of a ship based on cavitation jet, characterized in that, It includes a bubble dense array device, which is composed of uniformly arranged and combined bubble holes carried on a plate body; A bubble generating device, which includes a driving motor, a driving shaft, a transverse connecting rod, a propeller, a transmission shaft, an air pump, a check valve and an air pipe; the area where the bubble generating device is located is divided into a first cavity and a second cavity. The driving motor is arranged in the first cavity. The transmission of the driving motor is divided into two driving outputs. The first output end is sequentially transmitted through the driving shaft and the transverse connecting rod. The end of the transverse connecting rod away from the driving motor extends into the space of the second cavity, and the propeller is arranged at the end of the transverse connecting rod; The second output end is sequentially transmitted through the transmission shaft and the air pump. The air outlet end of the air pump extends into the second cavity through the air pipe. The air outlet of the air pipe is located below the propeller, and the check valve is arranged on the air pipe; The bubble dense array device is located in the second cavity, arranged above the propeller, and there is a liquid collection space from the upper surface of the second cavity. A slow medicine discharging hole is opened on the outer side wall of the second cavity near the upper surface of the bubble dense array device.

2. The descaling device for the inner scale of a ship condenser based on cavitation jet according to claim 1, characterized in that, The bubble dense array device includes a bubble size adjusting structure, which is formed by laminating two or more of the plate bodies arranged in an alternating manner. Adjacent two plates can slide along the lamination surface and at least one position exists to make the positions of the bubble holes of different plates correspond and coincide one by one.

3. The scale cleaning device for the inner tube of a ship condenser based on cavitation jet according to claim 1, characterized in that, The bubble dense array device is made of anti-corrosion and acid-resistant materials.

4. A device for cleaning scale in a ship condenser tube based on cavitation jet according to claim 1, characterized in that, A gear shift key is arranged on the driving motor, and a gear lever is also arranged on the transverse connecting rod. The gear lever is used to adjust the included angle of the propeller blade relative to the axis of the transverse connecting rod.

5. The descaling device for the inner scale of a ship condenser based on cavitation jet according to claim 1, characterized in that, A handle is arranged on the outer side wall of the second cavity.

6. The scale cleaning device for the inner tube of a ship condenser based on cavitation jet according to claim 1, wherein, A special-shaped part positioning fixture is arranged in the second cavity.

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