Maintenance-free moisture absorber of transformer
By introducing a drain pipe, a monitoring pipe and a solenoid valve structure into the desiccant, combined with a liquid level sensor and a control box, real-time fault monitoring and processing of the transformer maintenance-free desiccant is achieved, solving the problem of untimely fault detection in the existing technology and improving the reliability and maintenance efficiency of the equipment.
Patent Information
- Application Number
- CN202422760994.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The existing transformer maintenance-free desiccant cannot monitor the humidity changes of silica gel in real time, resulting in untimely fault detection and affecting equipment use.
A desiccant structure with a drain pipe, a monitoring pipe and a solenoid valve was designed. The discharge volume was monitored in real time by a liquid level sensor, and abnormal information was remotely transmitted using a control box to facilitate timely fault handling.
Real-time fault monitoring and processing of the desiccant are achieved, improving the reliability and maintenance efficiency of the equipment.
Smart Images
Figure CN223486805U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of maintenance-free dehumidifiers, specifically relating to a transformer maintenance-free dehumidifier. Background Technology
[0002] A dehumidifier is used to remove and dry impurities and moisture from the air. Transformers are often used in conjunction with dehumidifiers to absorb moisture from the air entering the transformer. Traditional dehumidifiers use disposable silica gel to absorb moisture from the air entering and exiting the transformer oil conservator. When the silica gel becomes saturated with water, it must be manually replaced to maintain the dehumidifier's function. The advantage of a maintenance-free dehumidifier is that when its self-feedback system detects that the silica gel is saturated and has no further absorption capacity, it can send this information back to its own system and heat and drain the silica gel, ensuring that it can continue to absorb moisture and achieve a cycle of use.
[0003] Although maintenance-free dehumidifiers do not require silica gel replacement, they still need to be inspected regularly to prevent them from failing to absorb moisture and affecting transformer operation if they malfunction during use. However, regular inspections may not detect problems in time, and equipment failures are often only discovered after some time has passed, making it difficult to address the issues promptly.
[0004] Therefore, there is a need for a transformer-based maintenance-free dehumidifier that allows for real-time monitoring and timely handling of dehumidifier malfunctions. Utility Model Content
[0005] To address the aforementioned problems in the existing technology, this utility model provides a transformer maintenance-free dehumidifier, which features real-time monitoring and strong practicality.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a transformer maintenance-free dehumidifier, comprising a dehumidifier body, a bottom pipe connected through the bottom of the dehumidifier body, a connecting ring fixedly sleeved on the outer side of the bottom pipe, a liquid guide funnel threadedly connected to the bottom of the connecting ring, a drain pipe connected through the bottom of the liquid guide funnel, a solenoid valve fixed in the middle of the drain pipe, a monitoring tube connected through one side of the middle of the drain pipe, a first detection component fixed at the upper end of the monitoring tube, a second detection component fixed at the lower end of the monitoring tube, the first detection component including a liquid level sensor, a control box fixedly connected to one side of the dehumidifier body, the liquid level sensor electrically connected to the control box, and the solenoid valve electrically connected to the control box.
[0007] As a preferred technical solution of the transformer maintenance-free dehumidifier of this utility model, the monitoring tube includes an L-shaped connecting tube, the first detection component is fixed at the upper end of the L-shaped connecting tube, the first detection component includes a fixing sleeve, the fixing sleeve is fixedly sleeved on the outer side of the upper end of the L-shaped connecting tube, the liquid level sensor is fixed on the fixing sleeve, one end of the liquid level sensor is located inside the L-shaped connecting tube, and a transmission line is electrically connected to the liquid level sensor, one end of the transmission line is electrically connected to the control box.
[0008] As a preferred technical solution of the transformer maintenance-free dehumidifier of this utility model, the second detection component is fixed at the lower end of the L-shaped connecting pipe, and the second detection component is electrically connected to the control box.
[0009] As a preferred technical solution of the transformer maintenance-free dehumidifier of this utility model, the second detection component and the first detection component have the same structure.
[0010] As a preferred technical solution of the transformer maintenance-free dehumidifier of this utility model, the bottom of the connecting ring is provided with a threaded groove, the top of the liquid guide hopper is fixed with a threaded ring, and the threaded ring is threadedly connected to the inner side of the threaded groove.
[0011] As a preferred technical solution of the transformer maintenance-free dehumidifier of this utility model, the liquid guide hopper is located below the bottom tube.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] In use, this invention features a drain pipe, a monitoring pipe, and a solenoid valve. A liquid guide hopper is threaded to the bottom of the dehumidifier body, allowing water discharged from the dehumidifier to be drained through the drain pipe. A monitoring pipe is horizontally connected through the middle of the drain pipe, and a solenoid valve is added at the connection point. The solenoid valve can be controlled by a controller to guide the flow of liquid. When the maintenance-free dehumidifier detects that the humidity has reached the standard and begins heating to dry the silica gel, the water vapor generated by heating liquefies into water droplets and collects and is discharged. The discharged water enters the inside of the drain pipe. Simultaneously, the controller activates the solenoid valve to seal the drain pipe while controlling the dehumidifier to heat the silica gel, thus achieving connection between the drain pipe and the monitoring pipe. The system allows the discharged water to enter the inner side of the monitoring tube. Two liquid level sensors are installed at the bottom and top of the monitoring tube. By pre-setting the length of the monitoring tube, the amount of water discharged during normal operation of the maintenance-free dehumidifier can be kept between the two sensors. When the amount of discharged water exceeds the normal standard, the liquid level sensor at the top detects it and transmits the information to the control box. Using existing technology, the information is remotely transmitted to maintenance personnel for timely handling. Similarly, when the amount of discharged water is lower than the normal standard and the liquid level sensor at the bottom cannot detect the liquid, the information is also remotely transmitted to maintenance personnel in the same way, which facilitates timely detection of problems and improves the practicality of the dehumidifier. Attached Figure Description
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a partial cross-sectional view of the present invention;
[0017] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 For the utility model Figure 2 Enlarged diagram of point B in the middle.
[0019] In the diagram: 1. Dehumidifier body; 11. Bottom tube; 2. Connecting ring; 21. Threaded groove; 3. Liquid guide hopper; 31. Threaded ring; 4. Drain pipe; 5. Monitoring tube; 51. L-shaped connecting pipe; 52. First detection component; 511. Fixing sleeve; 512. Humidity sensor; 513. Transmission line; 53. Second detection component; 6. Solenoid valve; 7. Control box. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example
[0021] Please see Figure 1-4 This utility model provides the following technical solution: a maintenance-free dehumidifier for transformers, comprising a dehumidifier body 1, a bottom pipe 11 connected through the bottom of the dehumidifier body 1, and a control box 7 fixedly connected to one side of the dehumidifier body 1. The specific structure and operating principle of the dehumidifier can refer to the dehumidifiers in transformers in the prior art, which are common existing technologies, and therefore will not be described in detail here; please refer to the appendix. Figure 1 , Attachment Figure 2 With appendix Figure 4A connecting ring 2 is fixedly sleeved on the outside of the bottom tube 11. A liquid guide hopper 3 is threadedly connected to the bottom of the connecting ring 2. The liquid guide hopper 3 is located below the bottom tube 11 and can guide and collect the liquid discharged from the dehumidifier. A drain pipe 4 is connected through the bottom of the liquid guide hopper 3. A solenoid valve 6 is fixed in the middle of the drain pipe 4, which can be controlled by the control box 7 to open and close. A monitoring tube 5 is connected through one side of the middle of the drain pipe 4. A first detection component 52 is fixed at the upper end of the monitoring tube 5. The lower end of the monitoring tube 5... A second detection component 53 is fixedly installed. The first detection component 52 includes a liquid level sensor 512, which is electrically connected to the control box 7. A solenoid valve 6 is also electrically connected to the control box 7. When the dehumidifier heats the inner silica gel, the control box 7 controls the solenoid valve 6 to block the drain pipe 4, allowing the discharged liquid to enter the inner side of the monitoring tube 5. The monitoring tube 5 includes an L-shaped connecting pipe 51, and the first detection component 52 is fixed to the upper end of the L-shaped connecting pipe 51. The system includes a fixing sleeve 511, which is fixedly fitted onto the outer side of the upper end of the L-shaped connecting pipe 51. A liquid level sensor 512 is fixed to the fixing sleeve 511, with one end of the liquid level sensor 512 located inside the L-shaped connecting pipe 51. It can sense and monitor the water level inside the pipe 5. A transmission line 513 is electrically connected to the liquid level sensor 512, with one end of the transmission line 513 electrically connected to the control box 7. When the internal components of the dehumidifier heat and dry the silica gel, the water discharged from the dehumidifier enters the inner side of the monitoring pipe 5. When the water level exceeds the normal standard, it is sensed by the liquid level sensor 512 of the first detection component 52 and transmitted to the control box 7. The control box 7 then remotely transmits the information to the maintenance personnel. The internal structure and operating principle of the control box 7 are common existing technologies, and the remote information transmission is also an existing technology. Therefore, it is not described in detail here to facilitate the maintenance personnel in detecting abnormalities and to facilitate technical handling. After the dehumidifier finishes heating, the solenoid valve 6 is controlled again to discharge the water.
[0022] Refer to the attached Figure 2 As shown, specifically, the second detection component 53 is fixed at the lower end of the L-shaped connecting pipe 51, and the second detection component 53 is electrically connected to the control box 7. The second detection component 53 and the first detection component 52 have the same structure. By setting the second detection component 53 at the lower end of the monitoring pipe 5, when the amount of water discharged when the dehumidifier heats the silica gel is lower than the normal range, that is, when the sensor of the second detection component 53 cannot detect it, the information is transmitted to the control box 7, and then remotely transmitted to the maintenance personnel through existing technology, so that the maintenance personnel can deal with the problem in a timely manner.
[0023] Reference Figure 2 and Figure 3As shown, specifically, the bottom of the connecting ring 2 is provided with a threaded groove 21, and the top of the liquid guide hopper 3 is fixed with a threaded ring 31. The threaded ring 31 is threadedly connected to the inner side of the threaded groove 21. The threaded connection makes it easy to disassemble or replace the monitoring structure, which is convenient and practical.
[0024] The working principle and usage process of this utility model are as follows: When installing the maintenance-free dehumidifier, a connecting ring 2 is added to the bottom of the dehumidifier. The operator connects the liquid guide hopper 3 to the bottom of the connecting ring 2, allowing the water discharged when the dehumidifier heats the silica gel to enter the inside of the drain pipe 4 through the liquid guide hopper 3. A monitoring pipe 5 is connected to one side of the drain pipe 4, and the liquid flow is controlled by a solenoid valve 6. When the sensor inside the dehumidifier detects that the humidity has reached a certain standard, the heating component inside the dehumidifier is activated through the control box 7 to heat the silica gel. The water vapor generated after heating liquefies and collects, then flows through the drain pipe. 4. When the dehumidifier heats the silica gel, the solenoid valve 6 is activated through the control box 7 to block the drain pipe 4, causing the liquid to collect inside the monitoring pipe 5. After heating, when the liquid level of the collected liquid is between the detection ends of the first detection component 52 and the second detection component 53, it is in normal operation. When an abnormal drainage volume is detected, the abnormal information can be detected by the liquid level sensor 512 and transmitted to the control box 7. Then, it is remotely transmitted to the maintenance personnel through the control box 7, so that the maintenance personnel can find and deal with the problem in time. When draining, the solenoid valve 6 is activated again through the control box 7 to drain the water.
[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A transformer maintenance-free dehumidifier, comprising a dehumidifier body (1), characterized in that: The bottom of the dehumidifier body (1) is connected to a bottom tube (11). A connecting ring (2) is fixedly sleeved on the outside of the bottom tube (11). A liquid guide hopper (3) is threaded to the bottom of the connecting ring (2). A drain pipe (4) is connected to the bottom of the liquid guide hopper (3). A solenoid valve (6) is fixed in the middle of the drain pipe (4). A monitoring tube (5) is connected to one side of the middle of the drain pipe (4). A first detection component (52) is fixed at the upper end of the monitoring tube (5). A second detection component (53) is fixed at the lower end of the monitoring tube (5). The first detection component (52) includes a liquid level sensor (512). A control box (7) is fixedly connected to one side of the dehumidifier body (1). The liquid level sensor (512) is electrically connected to the control box (7). The solenoid valve (6) is electrically connected to the control box (7).
2. The transformer maintenance-free dehumidifier according to claim 1, characterized in that: The monitoring tube (5) includes an L-shaped connecting tube (51), the first detection component (52) is fixed at the upper end of the L-shaped connecting tube (51), the first detection component (52) includes a fixing sleeve (511), the fixing sleeve (511) is fixedly sleeved on the outer side of the upper end of the L-shaped connecting tube (51), the liquid level sensor (512) is fixed on the fixing sleeve (511), one end of the liquid level sensor (512) is located inside the L-shaped connecting tube (51), and a transmission line (513) is electrically connected to the liquid level sensor (512), one end of the transmission line (513) is electrically connected to the control box (7).
3. The transformer maintenance-free dehumidifier according to claim 2, characterized in that: The second detection component (53) is fixed at the lower end of the L-shaped connecting pipe (51), and the second detection component (53) is electrically connected to the control box (7).
4. A transformer maintenance-free dehumidifier according to claim 3, characterized in that: The second detection component (53) and the first detection component (52) have the same structure.
5. A transformer maintenance-free dehumidifier according to claim 4, characterized in that: The bottom of the connecting ring (2) is provided with a threaded groove (21), and the top of the liquid guide bucket (3) is fixed with a threaded ring (31), which is threadedly connected to the inside of the threaded groove (21).
6. A transformer maintenance-free dehumidifier according to claim 5, characterized in that: The liquid guide hopper (3) is located below the bottom tube (11).