A dehumidification device for the pitch system during storage and transportation

Abstract

The present invention provides a dehumidifying device for a pitch system during storage and transportation, which includes moisture absorption sheets, mounting packages, mounting belts, clamping structures, bayonets, and pitch drivers. An mounting belt is provided outside the pitch driver, and a number of mounting packages are connected in series on the mounting belt. Each mounting package is provided with a moisture absorption sheet. Clamping structures are further provided at both ends of the mounting belt, and bayonets are also provided on the surface of the pitch driver. The clamping structures are clamped with the bayonets to fix the positions of the mounting packages and the mounting belt on the surface of the pitch driver, preventing them from falling during transportation. The beneficial effects of the present invention are as follows: The device is simple to operate, environmentally friendly, and the dehumidifying material can be recycled. It can absorb moisture when the humidity in the cabinet is high and release moisture when the humidity in the cabinet is low, ensuring that the cabinet is dry during long-term power-off storage of the system. It has the characteristics of convenience, quickness, strong practicability, and low cost.

Description

Technical Field

[0001] The present invention belongs to the field of the electric control system of a wind turbine generator set, and particularly relates to a dehumidifying device for a pitch system during storage and transportation. Background Art

[0002] As a core component inside the pitch system, the pitch driver and other electrical devices of a wind turbine in a coastal area or at sea are extremely prone to failure due to humidity in its special humid environment. The specific influencing factors are as follows: after the pitch system is assembled into the hub and transported to the site (usually by the sea), the storage time is too long. If the humidity at the site is very high, moisture and rainwater enter the cabinet through parts such as the fan holes. During this period, power cannot be supplied, and the heater cannot be used for dehumidification. The storage time between the completion of hoisting and grid connection commissioning is too long. The humidity in the marine environment is very high, and moisture enters the cabinet through parts such as the fan holes. During this period, power cannot be supplied either, and the heater cannot be used for dehumidification. If the hub seal is not tight, the situation will be more serious after rainwater enters. After normal operation of grid connection commissioning, due to the high humidity in the marine environment, moisture enters the cabinet, or when power is restored after a long shutdown for some reason, internal moisture has accumulated for a certain period of time, which has a certain impact on the devices. Summary of the Invention

[0003] In view of this, the present invention aims to provide a dehumidifying device for a pitch system during storage and transportation to solve the above deficiencies.

[0004] To achieve the above object, the technical device of the present invention is realized as follows:

[0005] A dehumidifying device for a pitch system during storage and transportation includes a moisture absorption sheet, an installation package, an installation belt, a clamping structure, a bayonet, and a pitch driver. An installation belt is provided outside the pitch driver. A number of installation packages are connected in series on the installation belt. A moisture absorption sheet is provided in each installation package. Clamping structures are further provided at both ends of the installation belt. A bayonet is also provided on the surface of the pitch driver. The clamping structure is clamped with the bayonet, and the installation package and the installation belt are fixed at their positions on the surface of the pitch driver through the clamping structure.

[0006] Further, the installation belt is an elastic member.

[0007] Further, the clamping structure includes a first boss, a second boss and a spring. The first boss and the second boss are symmetrically arranged and are respectively fixedly connected to the upper and lower ends of the spring. A first connecting pipe is connected to the lower surface of the first boss, and a second connecting pipe is connected to the upper surface of the second boss. The first connecting pipe is sleeved inside the second connecting pipe. Open grooves facing outward are provided in the middle of the outer end faces of the first boss and the second boss. Connecting holes are provided at the apexes of the mounting belt. Each first connecting pipe and the second connecting pipe pass through each connecting hole. The open grooves on the surfaces of the first boss and the second boss are clamped in the bayonet, so that both sides of each end of the mounting belt are connected with a clamping structure, and the upper and lower side walls of the buckle are clamped in the open groove through two clamping structures at each end.

[0008] Further, the height of the spring is less than the distance between the first boss and the second boss, so that after being connected to the mounting belt, when the first boss and the second boss are squeezed, the spring can be in a compressed state, and the clamping structure completes the disassembly and assembly operation in the bayonet.

[0009] Further, a plug is also provided on the bayonet. When there is no clamping structure clamped, the bayonet is blocked with the plug.

[0010] Further, the moisture absorption sheet is made of a halogen-free polymer. Different from the conventional granular or powdery moisture absorption products, the outside of the moisture absorption sheet is coated with a non-woven fabric to form a thin sheet structure.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] A dehumidifying device for a pitch system during storage and transportation according to the present invention is simple to operate, environmentally friendly, and the dehumidifying material can be recycled. It can absorb moisture when the humidity in the cabinet is high and release moisture when the humidity in the cabinet is low, ensuring that the cabinet is dry during long-term power-off storage. It has the characteristics of convenience, speed, strong practicability and low cost.

[0013] The purpose of this patent is to solve the problem of high humidity in the pitch cabinet before the pitch system is powered on, such as during transportation or storage after offshore hoisting. In addition to the original desiccant in the cabinet, reversible moisture absorption sheets and an installation package with simple installation are added to the cabinet. It absorbs moisture when the humidity in the cabinet is high and releases moisture when the humidity in the cabinet is low, ensuring that the cabinet is dry during long-term power-off storage, and the moisture absorption sheets are taken out before grid connection debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0015] Figure 1Schematic structural diagram of the dehumidifying device for the pitch system during storage and transportation according to the present invention;

[0016] Figure 2 Schematic structural diagram of the combination of the clamping structure and the mounting belt according to the present invention.

[0017] Explanation of reference numerals:

[0018] 1, moisture absorption sheet; 2, mounting package; 3, mounting belt; 4, clamping structure; 41, bayonet; 42, spring; 43, first connecting pipe; 44, second connecting pipe; 45, first boss; 46, second boss; 5, pitch drive. Detailed implementation manners

[0019] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounting", "connecting", "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0022] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0023] As Figures 1 to 2As shown in the figure, a dehumidifying device for a pitch system during storage and transportation includes a moisture absorption sheet 1, mounting packages 2, a mounting belt 3, a clamping structure 4, a bayonet 41, and a pitch actuator 5. An installation belt 3 is provided outside the pitch actuator 5. A number of mounting packages 2 are connected in series on the mounting belt 3. A moisture absorption sheet 1 is provided in each mounting package 2. The purpose of adding the mounting package 2 is to prevent the non-woven fabric of the outer packaging of the moisture absorption sheet 1 from aging and tearing or powdering after a long time and falling into the cabinet, causing other problems. Clamping structures 4 are provided at both ends of the mounting belt 3, and bayonets 41 are also provided on the surface of the pitch actuator 5. The clamping structure 4 is clamped with the bayonet 41 to fix the positions of the mounting package 2 and the mounting belt 3 on the surface of the pitch actuator 5, preventing them from falling during transportation.

[0024] The mounting belt 3 is an elastic member. In this embodiment, the mounting belt 3 is an elastic band. The use of an elastic member can be stretched and contracted to ensure that the position is fastened during the installation of the mounting package 2 without affecting the operation of the equipment.

[0025] The clamping structure 4 includes a first boss 45, a second boss 46, and a spring 42. The first boss 45 and the second boss 46 are symmetrically arranged and are respectively fixedly connected to the upper and lower ends of the spring 42. A first connecting pipe 43 is connected to the lower surface of the first boss 45, and a second connecting pipe 44 is connected to the upper surface of the second boss 46. The first connecting pipe 43 is sleeved inside the second connecting pipe 44. Open grooves facing outward are provided in the middle of the outer end faces of the first boss 45 and the second boss 46. Connecting holes are provided at the corners of the mounting belt 3, and the first connecting pipe 43 and the second connecting pipe 44 are respectively inserted into each connecting hole. The open grooves on the surfaces of the first boss 45 and the second boss 46 are clamped in the bayonet 41, so that clamping structures 4 are connected to both sides of each end of the mounting belt 3, and the upper and lower side walls of the buckle are clamped in the open grooves through two clamping structures 4 at each end to realize the fixation of the mounting belt 3.

[0026] The height of the spring 42 is less than the distance between the first boss 45 and the second boss 46, so that after being connected to the mounting belt 3, when the first boss 45 and the second boss 46 are squeezed, the spring 42 can be in a compressed state, and the clamping structure 4 can complete the disassembly and assembly operation in the bayonet.

[0027] A sealing plug is also provided on the bayonet 41. When there is no clamping structure 4 clamped, the bayonet 41 is blocked with the sealing plug to prevent moisture from entering the pitch actuator 5.

[0028] The material of the moisture absorption sheet 1 is a halogen-free polymer. Different from the previous granular or powdery moisture absorption products, the outside of the moisture absorption sheet 1 is coated with a non-woven fabric to form a thin sheet structure. Therefore, the installation is not restricted by the environment and is easy to use.

[0029] The moisture absorption sheet 1 is reversible. It adjusts the humidity by absorbing moisture in high humidity and releasing moisture in low humidity to maintain stable humidity. Through this humidity adjustment function, the dehumidification effect can be maintained for a long time, effectively coping with the condensation phenomenon. When the humidity in the cabinet is high, it absorbs moisture, and when the humidity in the cabinet is low, it releases moisture, ensuring that the cabinet is dry during long-term power-off storage of the system.

[0030] Even when the humidity is very high, it can continuously absorb moisture and will not reach saturation; it has the functions of moisture absorption and moisture release, and can maintain the dehumidification effect for a long time; the absorbed moisture will not harden even when frozen at minus temperature; as the amount of moisture absorption increases, the moisture absorption capacity decreases, but it can still recover its original moisture absorption capacity after being dried in the sun.

[0031] Through experimental testing of the moisture absorption effect of the moisture absorption sheet, the original weight of the moisture absorption sheet is 89 g. The moisture absorption sheet is placed in a high-temperature and high-humidity test chamber at 50°C and 95% for 8 h, and then taken out and weighed with an electronic scale. The weight of the moisture absorption sheet is 116.68 g. After being placed at room temperature for 16 h and then weighed again, the weight of the moisture absorption sheet is 97.6 g. It can be seen from the experiment that the moisture absorption sheet can absorb 20 g (i.e., 20 ml) of moisture in 8 h at 95% humidity.

[0032] The working process of this embodiment is as follows:

[0033] Put several installation packages 2 on the installation belt 3, then put the moisture absorption sheet 1 into several installation packages 2, stretch the installation belt 3, and snap the clamping structures 4 at both ends of the installation belt 3 into the bayonet 41 on the pitch drive 5. After the fixation is completed, before grid connection debugging, take out the installation packages 2 and the moisture absorption sheet that are put on the installation belt 3.

[0034] The above description is only a preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dehumidifying device for a pitch system during storage and transportation, Characterized in that: It includes a moisture absorption sheet (1), an installation package (2), an installation belt (3), a clamping structure (4), a bayonet (41), and a pitch driver (5). The outside of the pitch driver (5) is provided with an installation belt (3). A number of installation packages (2) are connected in series on the installation belt (3). Each installation package (2) is provided with a moisture absorption sheet (1). Clamping structures (4) are also provided at both ends of the installation belt (3). A bayonet (41) is also provided on the surface of the pitch driver (5). The clamping structure (4) is clamped with the bayonet (41), and the position of the installation package (2) and the installation belt (3) on the surface of the pitch driver (5) is fixed through the clamping structure (4); The clamping structure (4) includes a first boss (45), a second boss (46) and a spring (42). The first boss (45) and the second boss (46) are symmetrically arranged and are respectively fixedly connected to the upper and lower ends of the spring (42). A first connecting pipe (43) is connected to the lower surface of the first boss (45). A second connecting pipe (44) is connected to the upper surface of the second boss (46). And the first connecting pipe (43) is sleeved inside the second connecting pipe (44). Open grooves opening outwards are provided in the middle of the outer end faces of the first boss (45) and the second boss (46). Connecting holes are provided at the corners of the installation belt (3). Each connecting hole is penetrated by a first connecting pipe (43) and a second connecting pipe (44). The open grooves on the surfaces of the first boss (45) and the second boss (46) are clamped in the bayonet (41), so that clamping structures (4) are connected to both sides of each end of the installation belt (3). Each end clamps the upper and lower side walls of the buckle in the open groove through two clamping structures (4); The height of the spring (42) is less than the distance between the first boss (45) and the second boss (46), so that after being connected to the installation belt (3), when the first boss (45) and the second boss (46) are squeezed, the spring (42) is in a compressed state, and the clamping structure (4) completes the disassembly and assembly operation in the bayonet; A sealing plug is also provided on the bayonet (41). When there is no clamping structure (4) clamped, the bayonet (41) is blocked with the sealing plug.

2. A dehumidifying device for a pitch system during storage and transportation according to claim 1, Characterized in that: The installation belt (3) is an elastic member.

3. A dehumidifying device for a pitch system during storage and transportation according to claim 1, Characterized in that: The material of the moisture absorption sheet (1) is a halogen-free polymer. Different from the previous granular or powdery moisture absorption products, the outside of the moisture absorption sheet (1) is coated with non-woven fabric to form a sheet structure.

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