A dehumidification device for reducing the dew point in a cable trench

Abstract

The present invention discloses a dehumidification device for reducing the dew point of a cable trench, which comprises: an outer sealing body, which is vertically buried above the cable trench, and the lower end of the outer sealing body is connected to the cable trench; a side ventilation assembly, which is a plurality of groups arranged vertically, each of which is connected to the outer sealing body and is used to discharge the humid air in the cable trench; a graded drying guide assembly, which is arranged in the outer sealing body and is used to divert and heat the conveying air flow so that each branch air flow can present a different air flow temperature to dehumidify the cable trench; an air supply and exhaust device, which can be relatively slidably sleeved outside the cable line, and the air supply and exhaust device is connected to the graded guide assembly; a surface dehumidification assembly, which is fixed on one side of the air supply and exhaust device, wherein the cable line is circumferentially distributed on the inner cushion layer, and the surface dehumidification assembly is used to pre-absorb and dehumidify the surface of the cable line; and an internal humidity detector, which is a plurality of arranged, and each of the internal humidity detectors is evenly installed in the cable trench.

Description

Technical Field

[0001] The present invention belongs to the technical field of power protection equipment, and particularly relates to a dehumidification device for reducing the dew point in a cable trench. Background Art

[0002] In the main facilities of a substation, the cable trench is the place where the cables are most concentrated in the substation control system. To protect the cables and affiliated facilities in the cable trench, a cover plate is provided on the cable trench to prevent foreign objects from entering the cable trench. Since there is no dehumidification equipment installed in the cable trench and the trench of the cable trench is often in a dark and humid environment for a long time, a large amount of moisture is discharged through the outer rows of each main equipment terminal box, severely corroding the box body and the terminal rows inside the box. Moreover, due to the long-term moisture in the grounding grid in the cable trench, corrosion and fracture occur, resulting in the system grounding resistance not meeting the requirements. In the prior art, although most equipment can achieve dehumidification treatment of the cable trench, due to the long overall distance and large area ratio of the cable trench, a single dehumidification device is difficult to achieve an effective dehumidification effect, and the dehumidification effect is not ideal.

[0003] Therefore, those skilled in the art have provided a dehumidification device for reducing the dew point in a cable trench to solve the problems raised in the above background art. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A dehumidification device for reducing the dew point in a cable trench, which includes:

[0005] An outer sealed body, vertically buried above the cable trench, and the lower end of the outer sealed body penetrates into the cable trench;

[0006] Lateral ventilation components, which are multiple groups arranged vertically, and each lateral ventilation component is connected to the outer sealed body for exhausting and delivering the humid air in the cable trench;

[0007] A hierarchical drying and diversion component, arranged inside the outer sealed body, for diverting and heating the conveyed air flow so that each branch air flow can present different air flow temperatures for dehumidifying the cable trench;

[0008] An air supply and exhaust device, slidably sleeved outside the cable, and the air supply and exhaust device is connected to the hierarchical drying and diversion component;

[0009] A surface dehumidification component, fixed on one side of the air supply and exhaust device. Among them, the cable is circumferentially distributed on the inner cushion layer, and the surface dehumidification component is used for pre-absorbing and dehumidifying the surface of the cable; and

[0010] Inner humidity detectors, which are multiple arranged in a row, and each inner humidity detector is evenly installed in the cable trench.

[0011] Further, preferably, the lateral ventilation components include:

[0012] A delivery pipe, vertically inserted above the cable trench;

[0013] A current collector cover, coaxially fixed at the lower end of the delivery pipe;

[0014] A transfer pump, provided corresponding to each of the delivery pipes, and the transfer pump is connected to the other end of the delivery pipe;

[0015] An internal dehumidification device, installed in the outer sealed body, the transfer pump is connected to the internal dehumidification device through an external connection pipe, and the lower end of the internal dehumidification device is hermetically connected to the stepped drying and guiding component; and

[0016] An external exhaust vane, rotatably arranged above the outer sealed body, and one end of the external exhaust vane is connected to the internal dehumidification device through an exhaust pipe.

[0017] Further, as a preference, each of the current collector covers is arranged in a non-equivalent stepped manner in the cable trench, and the installation height of the current collector cover corresponding to the position close to the outer sealed body is lower than that of the other current collector covers.

[0018] Further, as a preference, the stepped drying and guiding component includes:

[0019] A treatment chamber;

[0020] A sealing connection pipe, coaxially connected to the treatment chamber, and one end of the sealing connection pipe is communicated with the side ventilation component;

[0021] An inner end member, coaxially fixed in the sealing connection pipe, and inner flow members are symmetrically arranged on the left and right of the inner end member, and one end of each of the inner flow members extends into and is connected to the treatment chamber;

[0022] Slow flow pipes, which are multiple and arranged vertically, and one end of each of the slow flow pipes is communicated with one of the inner flow members, and the slow flow pipes are configured in a spiral tube structure;

[0023] A collection chamber, arranged in the middle of the treatment chamber, and the other ends of the slow flow pipes are all communicated with the collection chamber;

[0024] An inner heating member, vertically fixed in the treatment chamber, for internally heating the treatment chamber;

[0025] An outer flow member, arranged corresponding to the inner flow member, the outer flow member is hermetically fixed at the lower end of the treatment chamber, and one of the outer flow members is communicated with the collection chamber through a slow flow pipe; and

[0026] A main delivery member, coaxially fixed below the treatment chamber, and the other end of the main delivery member is connected to the air supply and delivery device.

[0027] Further, as a preference, side pipe fittings are symmetrically penetrated and connected at both sides of the main delivery part, and one ends of the side pipe fittings are respectively connected to the outer flow part.

[0028] Further, as a preference, the air supply and delivery device includes:

[0029] A fixing frame, horizontally fixed above the inside of the cable trench;

[0030] An inner screw rod, horizontally arranged on the fixing frame in a relatively rotatable manner, a driving motor is installed at one end of the fixing frame, and an output end of the driving motor is connected to the inner screw rod;

[0031] A guiding seat, slidably arranged on the inner screw rod through a threaded meshing transmission effect; and

[0032] An outer sleeve pipe, horizontally fixedly sleeved below the guiding seat, and one side of the outer sleeve pipe is connected with a telescopic conduit, one end of the telescopic conduit is connected to the main delivery part, the outer sleeve pipe is configured as a double-layer pipe body structure, a delivery cavity is arranged inside the outer sleeve pipe, and a plurality of through holes are circumferentially arranged on the delivery cavity.

[0033] Further, as a preference, a diffusing seat is arranged on the upper end surface of the outer sleeve pipe, one end of the diffusing seat is connected to one of the side pipe fittings, and a warm current seat is arranged below the outer sealing body in the inner cushion layer, and the warm current seat is communicated with the slow flow pipe through the other side pipe fitting.

[0034] Further, as a preference, the surface dehumidification assembly includes:

[0035] An outer ring frame, sleeved outside the cable line, an inner notch is arranged on the inner cushion layer, retaining members are symmetrically fixed on both sides of the inner notch, positioning shaft plates are symmetrically arranged in the inner cushion layer, the positioning shaft plates are connected to the inner cushion layer through return springs, an installation frame is vertically arranged on the outer ring frame, the installation frame passes through the inner notch and is fixedly connected to the air supply and delivery device, and sealing layers are fixedly attached to the retaining members;

[0036] A rotatable inner frame, coaxially arranged inside the outer ring frame in a relatively rotatable manner;

[0037] Inner ring sleeves, a plurality of which are arranged in a circumferential array, and limiting members are rotatably arranged on each of the inner ring sleeves;

[0038] Support rods, relatively slidably penetrated through the limiting members; and

[0039] Absorbent cotton, arranged corresponding to each of the support rods, and the absorbent cotton is rotatably arranged at the other end of the support rod.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] In the present invention, a plurality of internal humidity detectors are evenly arranged in the cable trench. The internal humidity detectors can monitor the air humidity in the cable trench at fixed points in real time. During the dehumidification process, the lateral ventilation assembly can preferentially drain and send the humid air in the cable trench, and after being dehumidified by the internal dehumidification device, it enters the hierarchical drying and diversion assembly. The two internal flow members arranged in the hierarchical drying and diversion assembly can respectively form a slow air flow and a fast air flow in the treatment chamber, so as to achieve heating at different degrees. Among them, the slow air flow can be dissipated and discharged by the warm air seat after being heated, and the inner cushion layer can continuously supply heat to the outer surface of the cable lines erected in a circle, so as to dry the main body of the cable line. The fast air flow can be dissipated through the diffuser seat, so as to timely remove the humid air outside the cable line to form a circulating flow effect; in particular, the main delivery member can fuse the slow air flow and the fast air flow and diffuse them through the outer sleeve, so as to keep the air dry on the surrounding surface of the cable line, thereby improving the dehumidification effect; at the same time, the surface dehumidification assembly can preferentially absorb and dry the surface of the cable line, so as to ensure the drying of the main body of the cable line. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic structural diagram of the present invention;

[0043] Figure 2 is a schematic structural diagram of the lateral ventilation assembly in the present invention;

[0044] Figure 3 is a schematic structural diagram of the hierarchical drying and diversion assembly in the present invention;

[0045] Figure 4 is a schematic structural diagram of the air supply and delivery device in the present invention;

[0046] Figure 5 is a schematic structural diagram of the surface dehumidification assembly in the present invention;

[0047] In the figure: 1 outer sealing body, 2 lateral ventilation assembly, 21 delivery pipe, 22 flow collecting hood, 23 transfer pump, 24 external connection pipe, 25 internal dehumidification device, 26 external exhaust fan blade, 27 exhaust pipe, 3 hierarchical drying and diversion assembly, 31 treatment chamber, 32 sealing connection pipe, 33 inner end member, 34 internal flow member, 35 slow flow pipe, 36 collection chamber, 37 main delivery member, 38 internal heating member, 39 side pipe member, 4 air supply and delivery device, 41 fixing frame, 42 internal screw, 43 guiding seat, 44 outer sleeve, 45 warm air seat, 46 telescopic conduit, 5 surface dehumidification assembly, 51 inner cushion layer, 52 sealing layer, 53 outer ring frame, 54 return spring, 55 inner ring sleeve, 56 support rod, 57 adsorption cotton. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] Please refer to Figure 1 , in an embodiment of the present invention, a dehumidification device for reducing the dew point of a cable trench includes:

[0049] The outer sealed body 1 is vertically buried above the cable trench, and the lower end of the outer sealed body 1 penetrates into the cable trench;

[0050] The side ventilation components 2 are multiple groups arranged vertically, and each side ventilation component 2 is connected to the outer sealed body 1 for exhausting and sending the humid air in the cable trench;

[0051] The hierarchical drying and diversion component 3 is arranged in the outer sealed body 1 for diverting and heating the conveying air flow so that each branch air flow can present different air flow temperatures for dehumidifying the cable trench;

[0052] The air supply and exhaust device 4 is sleeved outside the cable line in a relatively slidable manner, and the air supply and exhaust device 4 is connected to the hierarchical drying and diversion component 3;

[0053] The surface dehumidification component 5 is fixed on one side of the air supply and exhaust device 4. Among them, the cable lines are circumferentially distributed on the inner cushion layer 51, and the surface dehumidification component 5 is used for pre-absorbing and dehumidifying the surface of the cable lines; and

[0054] The internal humidity detectors (not shown in the figure) are multiple arranged in a row, and each internal humidity detector is uniformly installed in the cable trench so as to evenly divide the cable trench into multiple areas and monitor the humidity level at fixed points in real time.

[0055] In this embodiment, the side ventilation component 2 includes:

[0056] The delivery pipe 21 is vertically inserted above the cable trench;

[0057] The collecting hood 22 is coaxially fixed at the lower end of the delivery pipe 21;

[0058] The transfer pump 23 is arranged corresponding to each delivery pipe 21, and the transfer pump 23 is connected to the other end of the delivery pipe 21;

[0059] The internal dehumidification device 25 is installed in the outer sealed body 1. The transfer pump 23 is connected to the internal dehumidification device 25 through the external connection pipe 24, and the lower end of the internal dehumidification device 25 is hermetically connected to the hierarchical drying and diversion component 3; and

[0060] The outer exhaust vane 26 is rotatably arranged above the outer sealed body 1. One end of the outer exhaust vane 26 is connected to the internal dehumidification device 25 through the exhaust pipe 27, so as to exhaust and dehumidify the humid air in the cable trench to form an air flow circulation.

[0061] As a preferred embodiment, each of the current collectors 22 is arranged in a non-equal-height stepped manner in the cable trench, and the installation height of the corresponding current collector 22 near the outer sealing body 1 is lower than that of the other current collectors 22. Especially during the later drying heat flow transportation, it can effectively prevent the drying heat flow from directly discharging from the current collector during the suspended rise, and ensure that the current collector discharges the humid gas everywhere in the cable trench.

[0062] In this embodiment, the hierarchical drying and diversion assembly 3 includes:

[0063] A treatment chamber 31;

[0064] A sealing connection pipe 32, coaxially connected to the treatment chamber 31, and one end of the sealing connection pipe 32 is communicated with the side ventilation assembly 2;

[0065] An inner end member 33, coaxially fixed in the sealing connection pipe 32, and inner flow members 34 are symmetrically arranged on the left and right of the inner end member 33, and one end of each inner flow member 34 extends into and is connected to the treatment chamber 31;

[0066] Slow flow pipes 35, which are multiple and arranged vertically, and one end of each slow flow pipe 35 is communicated with one of the inner flow members 34, and the slow flow pipes 35 are configured in a spiral tube structure;

[0067] A collection chamber 36, arranged in the middle of the treatment chamber 31, and the other end of each slow flow pipe 35 is communicated with the collection chamber 36;

[0068] An inner heating member 38, vertically fixed in the treatment chamber 31, for internally heating the treatment chamber 31;

[0069] An outer flow member, arranged corresponding to the inner flow member 34, the outer flow member is hermetically fixed at the lower end of the treatment chamber 31, and one of the outer flow members is communicated with the collection chamber 36 through a slow flow pipe 35; and

[0070] A main discharge member 37, coaxially fixed below the treatment chamber 31, and the other end of the main discharge member 37 is connected to the air supply and discharge device 4.

[0071] In this embodiment, side pipe fittings 39 are symmetrically penetrated and connected at both sides of the main discharge member 37, and one end of each side pipe fitting 39 is respectively connected to the outer flow member. Through each side pipe fitting, the slow air flow and the fast air flow in the treatment chamber are respectively transported, and the main discharge member can mix and discharge the slow air flow and the fast air flow, so as to achieve different exhaust and dehumidification effects on the cable body, the surface around it, and the cable trench based on different flow velocities and heating degrees.

[0072] In this embodiment, the air supply and discharge device 4 includes:

[0073] The fixing frame 41 is horizontally fixed above the inside of the cable trench;

[0074] The inner screw rod 42 is horizontally arranged on the fixing frame 41 in a relatively rotatable manner. One end of the fixing frame 41 is equipped with a driving motor, and the output end of the driving motor is connected to the inner screw rod 42;

[0075] The guiding seat 43 is slidably arranged on the inner screw rod 42 through a threaded meshing transmission effect; and

[0076] The outer sleeve 44 is horizontally fixed and sleeved below the guiding seat 43. One side of the outer sleeve 44 is connected with a telescopic conduit 46. One end of the telescopic conduit 46 is connected to the main delivery part 37. The outer sleeve 44 is configured as a double-layer tube structure. A delivery cavity is arranged inside the outer sleeve 44. A plurality of through holes are circumferentially arranged on the delivery cavity. The outer sleeve can mix the slow air flow and the fast air flow and uniformly transport them to the peripheral surface of the cable through the through holes, so as to discharge the humid air on its peripheral surface and improve the dehumidification effect.

[0077] As a preferred embodiment, a diffuser seat is arranged on the upper end surface of the outer sleeve 44. One end of the diffuser seat is connected to one of the side pipe fittings 39. And, a warm current seat 45 is arranged below the outer sealing body 1 in the inner cushion layer. The warm current seat 45 is communicated with the slow flow pipe 35 through the other side pipe fitting 39. That is to say, the two inner flow parts arranged in the hierarchical drying and guiding assembly can respectively form a slow air flow and a fast air flow in the treatment chamber, so as to realize heating at different levels. Among them, the slow air flow can be dissipated and discharged by the warm current seat after being heated, and the inner cushion layer can continuously supply heat to the outer surface of the circumferentially erected cable, so as to dry the main body of the cable. And the fast air flow can be dissipated through the diffuser seat, so as to timely discharge the humid air outside the cable to form a circulating flow effect.

[0078] In this embodiment, the surface dehumidification assembly 5 includes:

[0079] The outer ring frame 53 is sleeved outside the cable. An inner notch is arranged on the inner cushion layer 51. Positioning members are symmetrically fixed on both sides of the inner notch. Positioning shaft plates are symmetrically arranged in the inner cushion layer 51. The positioning shaft plates are connected to the inner cushion layer 51 through return springs 54. An installation frame is vertically arranged on the outer ring frame 53. The installation frame passes through the inner notch and is fixedly connected to the air supply and delivery device 4. And sealing layers 52 are fixedly attached to the positioning members; so that the inner cushion layer keeps the inner notch in a closed state under the action of the elastic force of the return spring;

[0080] The rotating inner frame is coaxially arranged inside the outer ring frame 53 in a relatively rotatable manner;

[0081] Inner ring sleeves 55, a plurality of which are arranged in a circumferential array, and limit members are rotatably arranged on each of the inner ring sleeves 55;

[0082] Support rods 56, which are slidably inserted through the limit members; and

[0083] Absorbent cotton 57, which is arranged corresponding to each of the support rods 56, and the absorbent cotton 57 is rotatably arranged at the other end of the support rod 56. The absorbent cotton can preferentially absorb water and dehumidify the surface of the cable, thereby improving the later dehumidification effect.

[0084] Specifically, in the dehumidification of the cable trench, the humid air in the cable trench is preferentially discharged through the flow collector in the side ventilation component. At this time, the inner dehumidification device can dry it. Different slow airflows and fast airflows with different flow velocities and heating temperatures are formed through the graded drying and diversion component. At this time, the air supply and discharge device preferentially synchronously drives the surface dehumidification component to dehumidify the surface of the cable during the lateral displacement. The slow airflow can be dissipated and discharged by the warm air seat after being heated, while the fast airflow can be dissipated through the diffuser seat, so as to timely remove the humid air outside the cable. At the same time, the main discharge member can mix and discharge the slow airflow and the fast airflow, so as to discharge the humid air on the surrounding surface of the cable and improve the dehumidification effect.

[0085] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A dehumidification device for reducing the dew point in a cable trench, characterized in that: Including: An outer sealed body, vertically buried above the cable trench, and the lower end of the outer sealed body penetrates into the cable trench; Lateral ventilation components, which are multiple groups arranged vertically, and each lateral ventilation component is connected to the outer sealed body for exhausting and sending the humid air in the cable trench; A hierarchical drying and diversion component, arranged inside the outer sealed body, for diverting and heating the conveying air flow so that each branch air flow can present different air flow temperatures for dehumidifying the cable trench; An air supply and exhaust device, slidably sleeved outside the cable line, and the air supply and exhaust device is connected to the hierarchical drying and diversion component; A surface dehumidification component, fixed on one side of the air supply and exhaust device. Among them, the cable lines are circumferentially distributed on the inner cushion layer, and the surface dehumidification component is used for pre-absorbing and dehumidifying the surface of the cable lines; Inner humidity detectors, which are multiple arranged in a row, and each inner humidity detector is evenly installed in the cable trench; The lateral ventilation components include: A delivery pipe, vertically inserted above the cable trench; A flow collecting cover, coaxially fixed at the lower end of the delivery pipe; A transfer pump, corresponding to each delivery pipe, and the transfer pump is connected to the other end of the delivery pipe; An inner dehumidification device, installed in the outer sealed body, the transfer pump is connected to the inner dehumidification device through an external connection pipe, and the lower end of the inner dehumidification device is hermetically connected to the hierarchical drying and diversion component; An outer exhaust vane, rotatably arranged above the outer sealed body, and one end of the outer exhaust vane is connected to the inner dehumidification device through an exhaust pipe; The hierarchical drying and diversion component includes: A processing chamber; A sealed connection pipe, coaxially connected to the processing chamber, and one end of the sealed connection pipe is connected to the lateral ventilation component; An inner end piece, coaxially fixed inside the sealed connection pipe, and inner flow pieces are symmetrically arranged on the left and right of the inner end piece, and one end of each inner flow piece extends into and is connected to the processing chamber; Slow flow pipes, which are multiple arranged vertically, and one end of each slow flow pipe is connected to one of the inner flow pieces, and the slow flow pipes are configured as a spiral tube structure; A collection chamber, arranged in the middle of the processing chamber, and the other ends of the slow flow pipes are all connected to the collection chamber; An inner heating element, vertically fixed inside the processing chamber for internally heating the processing chamber; Outer flow pieces, corresponding to the inner flow pieces, the outer flow pieces are hermetically fixed at the lower end of the processing chamber, and one of the outer flow pieces is connected to the collection chamber through a slow flow pipe; A main exhaust piece, coaxially fixed below the processing chamber, and the other end of the main exhaust piece is connected to the air supply and exhaust device; Side pipe fittings are symmetrically penetrated through both sides of the main exhaust piece, and one end of each side pipe fitting is respectively connected to the outer flow piece; The air supply and exhaust device includes: A fixing frame, horizontally fixed above the inside of the cable trench; An inner screw rod, horizontally arranged rotatably on the fixing frame, a driving motor is installed at one end of the fixing frame, and the output end of the driving motor is connected to the inner screw rod; A guiding seat, slidably arranged on the inner screw rod through a threaded meshing transmission; An outer sleeve pipe, horizontally fixed and sleeved below the guiding seat, and one side of the outer sleeve pipe is connected with a telescopic conduit, one end of the telescopic conduit is connected to the main exhaust piece, the outer sleeve pipe is configured as a double-layer pipe body structure, and an exhaust cavity is arranged inside the outer sleeve pipe, and a plurality of through holes are circumferentially arranged on the exhaust cavity; The upper end surface of the outer sleeve is provided with a flow-dispersing seat. One end of the flow-dispersing seat is connected to one of the side pipe fittings. A warm-flow seat is arranged below the outer sealing body in the inner cushion layer. The warm-flow seat is communicated with the slow-flow pipe through another side pipe fitting.

2. The dehumidification device for reducing the dew point in the cable trench according to claim 1, wherein: Each current-collecting cover is arranged in a non-equidistant stepped manner in the cable trench, and the installation height of the corresponding current-collecting cover near the outer sealing body is lower than that of the other current-collecting covers.

3. The dehumidification device for reducing the dew point in a cable trench according to claim 1, characterized in that: The surface dehumidification component includes: An outer ring frame is sleeved outside the cable. An inner notch is provided on the inner cushion layer. Positioning members are symmetrically fixed on both sides of the inner notch. Positioning shaft plates are symmetrically arranged in the inner cushion layer. The positioning shaft plates are connected to the inner cushion layer through return springs. An installation frame is vertically arranged on the outer ring frame. The installation frame passes through the inner notch and is fixedly connected to the air supply and delivery device. Sealing layers are fixedly attached to the positioning members; A rotating inner frame is coaxially arranged inside the outer ring frame and can rotate relatively; Inner ring sleeves, which are multiple and arranged in a circumferential array. Limit members are rotatably arranged on each inner ring sleeve; Support rods are slidably inserted through the limit members; Absorbent cotton is arranged corresponding to each support rod. The absorbent cotton is rotatably arranged at the other end of the support rod.

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