An automatic dehumidifying device for high-voltage motor terminal box

Abstract

The utility model relates to the technical fields of electrical circuit protection device, specifically discloses a kind of automatic dehumidification device for high-voltage motor terminal box, it include: circulation pipeline, both ends are communicated with the inside of terminal box;Fan, for driving the air in terminal box to flow into circulation pipeline;Drying box, access circulation pipeline inside;Partition, be provided with filter hole, rotatably be arranged in drying box;Along air flow direction, partition separates the inside of drying box into first chamber and second chamber;Desiccant, fill in first chamber and second chamber inside;Positioning assembly, for the positioning rotation 180 of partition °;By using the utility model, moisture can be absorbed by desiccant to air, to ensure that the connecting terminal inside the terminal box is in a dry working environment;It can also exchange the desiccant inside the first chamber and the second chamber, improve the utilization rate of the old desiccant in the second chamber, and reduce the procurement cost of desiccant.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical circuit protection devices, and in particular to an automatic dehumidification device for a high-voltage motor junction box. Background Technology

[0002] In industries such as power and chemicals, due to the limitations of the working environment, the junction boxes of high-voltage motors operate in humid and hot environments for extended periods.

[0003] In such an operating environment, a large amount of moisture can easily accumulate inside the junction box, forming condensation. Once this condensation adheres to the insulation surface, it accelerates the deterioration of the insulation medium, causing the circuit breaker to trip or damaging the junction box of the high-voltage motor. Moisture in the junction box can also easily cause poor insulation in the high-voltage motor, affecting its standby status and, in severe cases, causing motor damage.

[0004] Therefore, it is clear that solving the moisture problem of junction boxes in harsh working environments is an urgent issue that needs to be addressed. Utility Model Content

[0005] In view of the above problems, this utility model provides an automatic dehumidification device for high-voltage motor junction boxes, the purpose of which is to reduce the humidity of the air inside the junction box and prevent electrical equipment from getting damp.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An automatic dehumidification device for a high-voltage motor junction box is provided, comprising: a circulation pipe with both ends connected to the interior of the junction box; a fan for driving air from inside the junction box into the circulation pipe; a drying box connected to the circulation pipe and positioned in the airflow path inside the junction box; a partition plate with filter holes, rotatably disposed inside the drying box; the partition plate dividing the interior of the drying box into a first chamber and a second chamber along the airflow direction; a desiccant filling the first and second chambers; an inlet pipe disposed above the first chamber, with one end connected to the outside and the other end connected to the first chamber; an outlet pipe disposed below the first chamber, with one end connected to the outside and the other end connected to the first chamber; and a positioning assembly for positioning and rotating the partition plate 180°.

[0007] Furthermore, the positioning assembly includes: a rotating shaft rotatably mounted inside the drying box, a partition plate fixedly mounted on the rotating shaft; a positioning block fixedly disposed at one end of the rotating shaft, located outside the drying box; two positioning holes spaced 180° apart on the positioning block with the rotating shaft as the center; a positioning countersunk hole on the drying box; and a positioning pin capable of passing through one of the positioning holes and being inserted into the positioning countersunk hole.

[0008] Furthermore, the device also includes two end caps, which are respectively threaded onto the inlet pipe and the outlet pipe.

[0009] Furthermore, the drying box includes: a main body, which is cylindrical; two cover plates made of transparent material, which are fixedly installed at both ends of the main body; a first connecting pipe, which is fixedly installed on one side of the main body, with one end connected to the junction box and the other end connected to the first chamber; a second connecting pipe, which is fixedly installed on one side of the main body, with one end connected to the second chamber and the other end connected to the circulation pipe; and two arc-shaped filter plates with filter holes, which are installed on the main body and are used to seal the first chamber and the second chamber respectively.

[0010] Furthermore, the fan is an electric heating fan, with its air inlet connected to a circulation pipe and its air outlet connected to the inside of a junction box.

[0011] Furthermore, along the direction of airflow, the electric heating fan is positioned downstream of the drying box.

[0012] Furthermore, the device also includes a humidity sensor and a control component, with the humidity sensor housed in a junction box and the control component electrically connected to the humidity sensor and the fan.

[0013] Furthermore, the desiccant is silica gel desiccant.

[0014] The beneficial effects of this utility model are as follows: by using this utility model, the air inside the junction box can be circulated in the circulation pipe, and the moisture in the air can be adsorbed by the desiccant to complete the dehumidification work, ensuring that the connection terminals inside the junction box are in a dry working environment and preventing electrical equipment from tripping / being damaged; in addition, the desiccant in the first chamber and the second chamber can be exchanged, improving the utilization rate of the old desiccant in the second chamber and reducing the desiccant procurement cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall installation of the dehumidification device provided in the embodiments of this application.

[0016] Figure 2 This is a front view of the internal structure of the drying box provided in an embodiment of this application.

[0017] Figure 3 This is a top view of the internal structure of the drying box provided in an embodiment of this application.

[0018] The components include: 1. Junction box; 2. Circulating air duct; 3. Fan; 41. First chamber; 42. Second chamber; 43. Feed pipe fitting; 44. Discharge pipe fitting; 45. End cap; 5. Divider plate; 61. Rotating shaft; 62. Positioning block; 63. Positioning hole; 64. Positioning countersunk hole; 65. Positioning pin; 7. Drying box; 71. Main body; 72. Cover plate; 73. First connecting pipe fitting; 74. Second connecting pipe fitting; 75. Arc-shaped filter plate; 8. Humidity sensor. Detailed Implementation

[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0020] Reference Figure 1 , Figure 2 and Figure 3 As shown in the figure, this application discloses an automatic dehumidification device for a high-voltage motor junction box, comprising: a circulation pipe, both ends of which are connected to the interior of the junction box 1; a fan 3 for driving air from inside the junction box 1 into the circulation pipe; a drying box 7 connected to the circulation pipe and positioned in the airflow path inside the junction box 1; a partition plate 5 with filter holes, rotatably disposed inside the drying box 7; along the airflow direction, the partition plate 5 divides the interior of the drying box 7 into a first chamber 41 and a second chamber 42; a desiccant filled in the first chamber 41 and the second chamber 42; a feed pipe 43 disposed above the first chamber 41, one end connected to the outside and the other end connected to the first chamber 41; a discharge pipe 44 disposed below the first chamber 41, one end connected to the outside and the other end connected to the first chamber 41; and a positioning assembly for positioning and rotating the partition plate 5 by 180°.

[0021] In practical use, the fan 3 provides power to blow the air in the junction box 1 into the circulation pipe. The air in the junction box 1 passes through the first chamber 41 and the second chamber 42 in sequence. The first chamber 41 and the second chamber 42 are filled with desiccant. The desiccant absorbs the moisture in the air, thus completing the dehumidification of the air. The air then returns to the junction box 1, and the cycle repeats.

[0022] In this embodiment, after the desiccant has been used for a fixed period of time, the maintenance personnel manually open the discharge pipe 44. Under the action of gravity, the desiccant in the first chamber 41 falls out of the first chamber 41 through the discharge pipe 44. The discharge pipe 44 is then closed, and new desiccant is filled into the first chamber 41 through the inlet pipe 43. The maintenance personnel then use the positioning component to rotate the partition plate 5 180° to send the new desiccant in the first chamber 41 into the second chamber 42, and send the old desiccant in the second chamber 42 into the first chamber 41, and then perform dehumidification work on the air in the junction box 1 again.

[0023] It is worth mentioning that the desiccant in the first chamber 41 will first come into contact with the air in the junction box 1 and absorb a large amount of moisture; while the desiccant in the second chamber 42 will come into contact with the air in the junction box 1 later and absorb a small amount of moisture.

[0024] By using this invention, the air inside the junction box 1 can be circulated in the circulation pipe, and the desiccant can adsorb moisture in the air to complete the dehumidification work, ensuring that the connection terminals inside the junction box 1 are in a dry working environment and preventing electrical equipment from tripping / being damaged; in addition, the desiccant in the first chamber 41 and the second chamber 42 can be exchanged, improving the utilization rate of the old desiccant in the second chamber 42 and reducing the desiccant procurement cost.

[0025] Specifically, the positioning assembly includes: a rotating shaft 61, rotatably mounted inside the drying box 7, and a partition plate 5 fixedly mounted on the rotating shaft 61; a positioning block 62, fixedly disposed at one end of the rotating shaft 61, located outside the drying box 7; two positioning holes 63, spaced 180° apart from the rotating shaft 61, on the positioning block 62; a positioning countersunk hole 64, formed on the drying box 7; and a positioning pin 65, capable of passing through one of the positioning holes 63 and being inserted into the positioning countersunk hole 64.

[0026] It is worth mentioning that the rotating shaft 61 can be rotatably mounted on the drying box 7 using a rotary sealing assembly in the prior art.

[0027] In practical use, the operator rotates the positioning block 62 to align the two different positioning holes 63 with the positioning countersunk holes 64, thereby rotating the partition plate 5 180°, and finally positioning it by the positioning pin 65.

[0028] Preferably, the device further includes two end caps 45, which are respectively threaded onto the feed pipe 43 and the discharge pipe 44; the operator can open / close the first chamber 41 by turning the end caps 45 to facilitate the replacement of the desiccant.

[0029] It is worth mentioning that if the desiccant does not completely fall out of the first chamber 41, staff can use a stainless steel wire to remove it.

[0030] In this embodiment, the drying box 7 includes: a main body 71, which is cylindrical; two cover plates 72, made of transparent material, which are fixedly disposed at both ends of the main body 71; a first connecting pipe 73, which is fixedly disposed on one side of the main body 71, with one end connected to the junction box 1 and the other end connected to the first chamber 41; a second connecting pipe 74, which is fixedly disposed on one side of the main body 71, with one end connected to the second chamber 42 and the other end connected to the circulation pipe; and two arc-shaped filter plates 75, which have filter holes, are disposed on the main body 71 and are used to seal the first chamber 41 and the second chamber 42 respectively.

[0031] It is worth mentioning that the cover plate 72 can be made of acrylic, and the staff can observe the usage of the desiccant inside through the transparent acrylic and replace it in time; by setting the arc-shaped filter plate 75, the desiccant can be sealed in the first chamber 41 and the second chamber 42, while ensuring air circulation.

[0032] It is worth mentioning that the first connecting pipe fitting 73 and the second connecting pipe fitting 74 can be installed on the main body 71 by welding. The first connecting pipe fitting 73 can be detachably connected to the junction box 1 by flange and bolts, and the second connecting pipe fitting 74 can be connected to the circulation pipe by flange and bolts.

[0033] In this embodiment, the fan 3 is an electric heating fan. The air inlet of the electric heating fan is connected to the circulation pipe, and the air outlet of the electric heating fan is connected to the inside of the junction box 1.

[0034] In practical use, the electric heater can heat the air passing through the desiccant, which can further reduce the humidity of the air returning to junction box 1.

[0035] It is worth mentioning that the air inlet of the electric heater can be connected to the circulation pipe via a flange and bolts, and the air outlet of the electric heater can be connected to the junction box 1 via a flange and bolts.

[0036] Specifically, the electric heater is positioned downstream of the drying box 7, along the direction of airflow.

[0037] Preferably, the device further includes a humidity sensor 8 and a control component (not shown in the figure), wherein the humidity sensor 8 is disposed in the junction box 1, and the control component is electrically connected to the humidity sensor 8 and the fan 3.

[0038] It is worth mentioning that the humidity sensor 8 detects the humidity information inside the junction box 1. When the humidity inside the junction box 1 reaches the set humidity threshold, the control component can output a signal to start the fan 3 to send the humid air inside the junction box 1 into the circulation channel, and the desiccant absorbs the moisture in the air to achieve the purpose of dehumidification.

[0039] It is worth mentioning that the humidity sensor 8 can be any model available on the market, and the control component can be a programmable logic controller (PLC). The specific programming language and connection method are well known to those skilled in the art, and will not be described in detail here.

[0040] Preferably, the desiccant is silica gel desiccant. It is worth mentioning that silica gel desiccant is blue when it does not absorb water, and turns red after absorbing water; this allows staff to visually observe the usage of the desiccant inside and ensures timely replacement of the desiccant.

[0041] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.

Claims

1. An automatic dehumidification device for a high-voltage motor junction box, characterized in that, include: The circulating pipe is connected to the inside of the junction box (1) at both ends; A fan (3) is used to drive the air inside the junction box (1) into the circulation pipe; The drying box (7) is connected to the circulation pipe and is located in the air flow path inside the junction box (1); The partition plate (5) has filter holes and is rotatably installed inside the drying box (7); along the air flow direction, the partition plate (5) divides the interior of the drying box (7) into a first chamber (41) and a second chamber (42); Desiccant is filled in the first chamber (41) and the second chamber (42); The feed pipe (43) is located above the first chamber (41), with one end connected to the outside and the other end connected to the first chamber (41); The discharge pipe (44) is located below the first chamber (41), with one end connected to the outside and the other end connected to the first chamber (41); A positioning component is used to position and rotate the partition plate (5) by 180°.

2. The automatic dehumidification device for high-voltage motor junction boxes according to claim 1, characterized in that, The positioning components include: A rotating shaft (61) is rotatably installed inside a drying box (7), and a partition plate (5) is fixedly installed on the rotating shaft (61); The positioning block (62) is fixedly set at one end of the rotating shaft (61) and located outside the drying box (7); Two positioning holes (63) are provided on the positioning block (62) with the rotating shaft (61) as the center and spaced 180° apart; A positioning countersunk hole (64) is provided on the drying box (7); The locating pin (65) can pass through one of the locating holes (63) and be inserted into the locating countersunk hole (64).

3. The automatic dehumidification device for high-voltage motor junction boxes according to claim 1, characterized in that, Also includes: Two end caps (45) are respectively installed on the feed pipe (43) and the discharge pipe (44) by threaded connection.

4. The automatic dehumidification device for high-voltage motor junction boxes according to claim 1, characterized in that, The drying box (7) includes: The main body (71) is cylindrical; Two cover plates (72), made of transparent material, are fixedly installed at both ends of the main body (71); The first connecting pipe (73) is fixedly installed on one side of the main body (71), with one end connected to the junction box (1) and the other end connected to the first chamber (41); The second connecting pipe (74) is fixedly installed on one side of the main body (71), with one end in the second chamber (42) and the other end connected to the circulation pipe; Two arc-shaped filter plates (75) with filter holes are installed on the main body (71) and are used to seal the first chamber (41) and the second chamber (42) respectively.

5. The automatic dehumidification device for high-voltage motor junction boxes according to claim 1, characterized in that, The fan (3) is an electric heating fan. The air inlet of the electric heating fan is connected to the circulation pipe, and the air outlet of the electric heating fan is connected to the inside of the junction box (1).

6. The automatic dehumidification device for a high-voltage motor junction box according to claim 5, characterized in that, Along the direction of airflow, the electric heating fan is positioned downstream of the drying box (7).

7. The automatic dehumidification device for high-voltage motor junction boxes according to claim 1, characterized in that, Also includes: Humidity sensor (8) and control unit: The humidity sensor (8) is located in the junction box (1), and the control unit is electrically connected to the humidity sensor (8) and the fan (3).

8. The automatic dehumidification device for high-voltage motor junction boxes according to claim 1, characterized in that, The desiccant is silica gel.

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