A control box for a marine cooling tower

Abstract

The present invention discloses a marine cooling tower control box in the technical field of cooling tower control boxes, comprising: a control box main body, a plurality of connecting heads are arranged at the bottom of the control box main body, and the connecting heads are used for plugging one end of a connecting cable; and a waterproof self-retracting member is arranged at the connection between the connecting head and the connecting cable. In this technical solution, by providing a waterproof self-retracting member, the connection between the connecting head and the connecting cable is placed in a sleeve seat, and an inner ring, an outer ring and a sealing ring are used for efficient sealing. When external liquid seeps into the sleeve seat, the seeping liquid enters between the outer ring and the inner ring through the water seepage holes, and then is absorbed by the water-absorbing and swelling ring and swells, so as to push the arc-shaped plate to move between the outer ring and the inner ring. Subsequently, the movable strip moves horizontally, and the waist-shaped hole on its outer wall corresponds to the contact rod two. At this time, the elastic telescopic rod compresses the connecting block to make the movable strip move downward, and then the outer ring and the sealing ring drive the connecting cable to move downward and separate from the connecting head, ensuring the safety of use.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling tower control boxes, and particularly to a marine cooling tower control box. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant, absorbs heat from a system and discharges it into the atmosphere to reduce the water temperature. Its cooling is achieved by the principle of heat exchange between water and air flow contact to generate steam, and the steam volatilization takes away heat to achieve evaporation heat dissipation, convective heat transfer and radiative heat transfer, etc., to dissipate the waste heat generated in industry or refrigeration air conditioning to reduce the water temperature, so as to ensure the normal operation of the system. The device is generally barrel-shaped, so it is named a cooling tower.

[0003] At present, the operation control of marine cooling towers is mostly to control the working state of the cooling tower through a control box. The cooling tower is connected to the connector on the control box through a cable, so that the control box can control the cooling tower. However, after the cable is connected to the connector on the control box, it is mostly in an open and exposed state. And the installation environment of the control box of the cooling tower is complex, and it may be in a relatively humid or water-leaking environment. If water seeps into the connection between the cable and the connector on the control box, it is easy to cause a short circuit in the circuit and damage the internal electrical components of the control box, affecting the control of the cooling tower by the control box. For this reason, we propose a marine cooling tower control box. Summary of the Invention

[0004] The purpose of the present invention is to provide a marine cooling tower control box to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A marine cooling tower control box, comprising:

[0006] A control box main body, a plurality of connectors are arranged at the bottom of the control box main body, and the connectors are used for plugging one end of a connecting cable; and,

[0007] A waterproof self-retracting member, arranged at the connection between the connector and the connecting cable; wherein,

[0008] The waterproof self-retracting member includes:

[0009] A sleeve seat, movably sleeved outside the connector, the sleeve seat is detachably connected to the top of the control box main body, and the connection between the connector and the connecting cable is placed inside the sleeve seat;

[0010] A waterproof sealing part, arranged inside the sleeve seat for sealing the connection between the connector and the connecting cable; and,

[0011] A self-retracting driving part, arranged on the outer wall of the sleeve seat for separating the connecting cable from the connector when water enters.

[0012] Further improvement lies in that the waterproof sealing part includes:

[0013] An installation cylinder, fixedly sleeved on the outer wall of the connecting cable;

[0014] A sealing ring, detachably and fixedly sleeved on the outer wall of the installation cylinder for shielding the bottom of the sleeve seat;

[0015] An inner ring, fixedly arranged on the top of the sealing ring and sleeved on the outer wall of the installation cylinder, the inner ring is placed inside the sleeve seat; and,

[0016] An outer ring, fixedly arranged on the top of the sealing ring and movably sleeved outside the inner ring, the outer ring is adapted to the inner cavity of the sleeve seat, a limiting ring is arranged at the top between the outer ring and the inner ring, and concave notches are formed on both sides of the outer ring.

[0017] Further improvement lies in that the waterproof sealing part further includes:

[0018] Two movable bars are provided, and the two movable bars are respectively movably inserted into the concave notches on both sides of the outer ring. One end of the movable bar passes through the concave notch and extends to the inner side of the outer ring and is connected with an arc-shaped plate. A waist-shaped hole is formed through the top end of the movable bar near the inner ring;

[0019] A water-absorbing and swelling ring, sleeved on the outer wall of the inner ring and placed at a position below the limiting ring, and the outer side of the water-absorbing and swelling ring is attached to the inner side of the arc-shaped plate; and,

[0020] Multiple water seepage holes are provided, and the multiple water seepage holes are arranged in an annular array at the lower end of the outer periphery of the outer ring for the liquid that seeps in to enter between the outer ring and the inner ring.

[0021] Further improvement lies in that the self-retracting driving part includes:

[0022] Two outer shells are provided, and the two outer shells are respectively fixedly arranged on both sides of the sleeve seat and correspond to the movable bars. An activity port for the movable bar to enter is formed on one side of the bottom of the outer shell close to the sleeve seat, and a through port communicating with the outer shell and for the movable bar to enter is formed at the bottom of the sleeve seat;

[0023] A top-opening part, arranged at the top inside the outer shell, for driving the connecting cable to separate from the connector when water enters; and,

[0024] A positioning part, arranged at the bottom inside the outer shell, for stably connecting the connecting cable and the connector during normal use.

[0025] Further improvement lies in that the top-opening part includes:

[0026] There are two sets of elastic telescopic rods, which are symmetrically arranged at the top inside the housing, and the top ends of the elastic telescopic rods are connected to the inner wall of the top of the housing; and,

[0027] A connecting block is jointly connected to the bottom ends of the two sets of elastic telescopic rods. The bottom of the connecting block fits against one end of the top of the movable strip away from the inner ring, so a rectangular opening penetrates through the connecting block.

[0028] A further improvement lies in that the top-opening part further includes:

[0029] There are two sets of movable sealing plates, which are respectively inserted into both sides of the sleeve seat movably. One end of the movable sealing plate corresponds to the connection part of the connecting head and the connecting cable, the other end of the movable sealing plate is placed inside the housing, and the movable sealing plate is also placed between the two sets of elastic telescopic rods;

[0030] An inlay block is fixedly arranged at the bottom of the movable sealing plate and at the end away from the sleeve seat;

[0031] An elastic member has one end connected to the inlay block and the other end connected to the inner wall of the side of the housing away from the sleeve seat;

[0032] A first contact rod is fixed to the bottom of the end of the inlay block away from the elastic member, and a ball is movably embedded at the end of the first contact rod away from the inlay block; and,

[0033] A wedge-shaped block is fixedly arranged on one side of the connecting block for slidingly abutting against the ball at one end of the first contact rod, and is used to drive the movable sealing plate to move into the sleeve seat when the connecting block moves downward.

[0034] A further improvement lies in that the positioning part includes:

[0035] A moving plate is slidably arranged at the bottom of the inner cavity of the housing. The inner side of the moving plate fits against the outer wall of the sleeve seat, and is used to block the movable opening at the bottom of the housing and abut against the outer end of the bottom of the movable strip;

[0036] A second contact rod is fixedly arranged on the top of the moving plate. A ball is embedded at the top of the second contact rod, and the ball at the top of the second contact rod slidably abuts against the outer end of the bottom of the movable strip. The second contact rod and the ball at its top can both pass through the waist-shaped hole on the movable strip and the rectangular opening on the connecting block; and,

[0037] One end of a driving screw rod is rotatably connected to the outer side of the moving plate, and the other end movably penetrates through the outer side of the housing and is fixed with a driving handwheel.

[0038] In summary, the present application discloses a marine cooling tower control box.

[0039] In this technical solution, a waterproof self-retracting component is provided, and the connection between the connector and the connection cable is placed inside the sleeve seat. An inner ring, an outer ring, and a sealing ring are used for efficient sealing. When external liquid seeps into the sleeve seat, the seeping liquid enters the space between the outer ring and the inner ring through the water seepage holes, and then is absorbed by the water-absorbing and swelling ring and swells. This causes the arc-shaped plate to move between the outer ring and the inner ring, and then the movable strip moves horizontally, and the waist-shaped hole on its outer wall corresponds to the contact rod two. At this time, the elastic telescopic rod compresses the connection block to make the movable strip move downward. Furthermore, the outer ring and the sealing ring drive the connection cable to move downward and separate from the connector, so that the liquid will not seep into the connection between the connection cable and the connector, avoiding the problem of short circuit and fire, ensuring the safety of use. At the same time, when the connection block moves downward, through the cooperation of the wedge-shaped block and the contact rod one, the movable sealing plate is reset and moves into the sleeve seat. The inner end of the movable sealing plate moves between the connection cable and the connector after they are separated, so as to prevent the seeping liquid from interfering with their connection ends and ensure the subsequent reconnection and use of the connection cable and the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a three-dimensional view of the structure of a marine cooling tower control box according to the present invention;

[0041] Figure 2 is a three-dimensional view of the structure of a waterproof self-retracting component of a marine cooling tower control box according to the present invention;

[0042] Figure 3 is a three-dimensional view of the structure of a waterproof sealing part in a marine cooling tower control box according to the present invention;

[0043] Figure 4 is a cross-sectional view of the structure of a self-retracting driving part in a marine cooling tower control box according to the present invention;

[0044] Figure 5 According to the present invention Figure 4 three-dimensional view of the structure.

[0045] In the figure: 1. Main body of the control box; 2. Connector; 3. Waterproof self-retracting component; 31. Sleeve seat; 32. Waterproof sealing part; 321. Installation cylinder; 322. Sealing ring; 323. Inner ring; 324. Outer ring; 325. Movable strip; 326. Waist-shaped hole; 327. Water seepage hole; 328. Water-absorbing and swelling ring; 33. Self-retracting driving part; 331. Outer shell; 3311. Movable opening; 332. Pushing part; 3321. Elastic telescopic rod; 3322. Connection block; 3323. Movable sealing plate; 3324. Elastic part; 3325. Insert block; 3326. Wedge-shaped block; 3327. Contact rod one; 333. Positioning part; 3331. Moving plate; 3332. Contact rod two; 3333. Driving screw; 4. Connection cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. 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.

[0047] Embodiment 1

[0048] Please refer to Figure 1-2 , a control box for a marine cooling tower, comprising: a control box main body 1, a connector 2, a waterproof self-retracting member 3, and a connecting cable 4;

[0049] Among them, the control box main body 1 belongs to the prior art and has electrical components inside;

[0050] The connector 2 is provided with multiple groups, which are arranged equidistantly along a linear array at the bottom of the control box main body 1 and are connected to the electrical components inside the control box main body 1;

[0051] The connecting cable 4, one end of the connecting cable 4 is inserted and connected to the connector 2. Specifically, one end of the connecting cable 4 has an insertion end, and the other end of the connector 2 has a jack adapted to the insertion end. The connecting cable 4 and the connector 2 are connected in a plug-in manner. The other end of the connecting cable 4 is connected to the electrical components in the external cooling tower, facilitating the control of the external cooling tower through the control box main body 1;

[0052] The waterproof self-retracting member 3 is arranged at the bottom of the control box main body 1 and sleeved on the connection part of the connector 2 and the connecting cable 4, for preventing accidental water seepage at the connection part of the connector 2 and the connecting cable 4;

[0053] It should be noted that the number of the waterproof self-retracting members 3 is the same as the number of the connectors 2, that is, when there are three connectors 2, there are also three waterproof self-retracting members 3.

[0054] Embodiment 2

[0055] Please refer to Figure 2 , the waterproof self-retracting member 3 includes: a sleeve seat 31, a waterproof sealing part 32, and a self-retracting driving part 33;

[0056] Among them, the shape of the sleeved seat 31 is rectangular, and a circular hole is vertically penetrated inside to accommodate the connector 2 and the connecting cable 4. The sleeved seat 31 is movably sleeved outside the connector 2. Connecting ears are provided at the tops of the outer walls on both sides of the sleeved seat 31, and the connecting ears and the main body 1 of the control box are fixed by bolt-like fixing components. In actual situations, in order to ensure the sealing performance between the sleeved seat 31 and the main body 1 of the control box, a sealing ring is embedded at the position of the top of the sleeved seat 31 outside the circular hole for contact with the top of the main body 1 of the control box to ensure the sealing performance after the connection between the sleeved seat 31 and the top of the main body 1 of the control box. The connection between the connector 2 and the connecting cable 4 is disposed inside the sleeved seat 31;

[0057] The waterproof sealing part 32 is arranged inside the sleeved seat 31 to ensure the waterproof sealing performance at the connection of the connector 2 and the connecting cable 4;

[0058] The self-retracting driving part 33 is arranged outside the sleeved seat 31 to drive the connector 2 and the connecting cable 4 to separate when water enters the connection of the connector 2 and the connecting cable 4, that is, they no longer maintain the connection state. There are two groups of self-retracting driving parts 33, which are respectively arranged on the outer walls on both sides of the sleeved seat 31.

[0059] Embodiment 3

[0060] Please refer to Figure 3-4 , the waterproof sealing part 32 includes: an installation cylinder 321, a sealing ring 322, an inner ring 323, an outer ring 324, a movable strip 325, a waist-shaped hole 326, a water seepage hole 327, and a water-absorbing expansion ring 328;

[0061] Among them, the installation cylinder 321 is fixedly sleeved on the outer wall of the connecting cable 4, playing a role in supporting and installing the structure;

[0062] The sealing ring 322 is detachably and fixedly sleeved on the outer wall of the installation cylinder 321 and is configured to seal the bottom of the circular hole and the through port in the sleeved seat 31. The diameter of the sealing ring 322 is larger than the diameter of the circular hole in the sleeved seat 31. After the connecting cable 4 is connected to the connector 2, the sealing ring 322 fits to the bottom of the sleeved seat 31 to seal the bottom of the sleeved seat 31;

[0063] The inner ring 323 is fixedly arranged on the top of the sealing ring 322 and is movably sleeved on the outer wall of the installation cylinder 321. After the sealing ring 322 contacts the bottom of the sleeved seat 31, the inner ring 323 is placed in the circular hole in the sleeved seat 31;

[0064] The outer ring 324 is fixedly arranged on the top of the sealing ring 322 and is movably sleeved outside the inner ring 323. The inner wall of the outer ring 324 fits the inner wall of the circular hole in the sleeved seat 31. A limiting ring is arranged at the top between the inner ring 323 and the outer ring 324, and the limiting ring is used to limit the water-absorbing expansion position of the water-absorbing expansion ring 328 which will be described in detail below;

[0065] From the attached Figure 3 As can be seen, notches are provided on both sides of the outer ring 324 for the movement of the movable bar 325. The water seepage holes 327 are arranged in a circular array at the bottom of the outer wall of the outer ring 324. When water accidentally seeps at the connection between the connector 2 and the connection cable 4, the liquid first enters between the outer ring 324 and the inner ring 323 through the water seepage holes 327 and is then absorbed by the water-absorbing and swelling ring 328;

[0066] There are two groups of movable bars 325. One end passes through the notch on the outer ring 324 and extends to the inner side of the outer ring 324 and is connected with a group of arc-shaped plates. The bottom of the arc-shaped plate contacts the top of the sealing ring 322. The arc-shaped plate can move horizontally between the outer ring 324 and the inner ring 323. The other end of the movable bar 325 extends to the outside of the sleeve seat 31;

[0067] It should be noted that through holes are provided on both sides of the bottom of the sleeve seat 31 for the movable bar 325 to enter. When the connector 2 is connected to the connection cable 4, the movable bars 325 on both sides of the outer ring 324 enter from the through holes on both sides respectively;

[0068] It should be noted that the waist-shaped hole 326 penetrates through the movable bar 325 up and down, and the waist-shaped hole 326 is located at one end of the outer wall of the movable bar 325 close to the inner ring 323;

[0069] The water-absorbing and swelling ring 328 is a prior art and can adopt water-swellable rubber. The water-absorbing and swelling ring 328 is sleeved on the outer wall of the inner ring 323. The water-absorbing and swelling ring 328 is placed below the limiting ring and also fits against the inner side of the arc-shaped plate. When the liquid from the outside enters the connection between the connector 2 and the connection cable 4, it enters between the inner ring 323 and the outer ring 324 through the water seepage holes 327 and is then absorbed by the water-absorbing and swelling ring 328. The water-absorbing and swelling ring 328 absorbs water and swells, causing the arc-shaped plate to move outward, and then the arc-shaped plate causes the movable bar 325 to move outward.

[0070] Embodiment 4

[0071] Please refer to Figure 4-5 , the self-retracting driving part 33 includes: a housing 331, a jacking part 332 and a positioning part 333;

[0072] Among them, the housing 331 is fixedly arranged on the outer wall of the sleeve seat 31. One side of the housing 331 close to the sleeve seat 31 is hollow. The top end of the housing 331 is flush with the top of the sleeve seat 31, and the bottom end of the housing 331 is flush with the bottom of the sleeve seat 31. A movable opening 3311 for the movable bar 325 to pass through is provided on one side of the bottom of the housing 331 close to the sleeve seat 31. When the connection cable 4 is connected to the connector 2, the end of the movable bar 325 far from the inner ring 323 is placed inside the housing 331 through the movable opening 3311;

[0073] The jacking part 332 includes: an elastic telescopic rod 3321, a connecting block 3322, a movable sealing plate 3323, an elastic member 3324, an insert block 3325, a wedge block 3326, and a first contact rod 3327;

[0074] Among them, there are two groups of elastic telescopic rods 3321, which are symmetrically arranged front and back on the top of the outer shell 331. The top end of the elastic telescopic rod 3321 is connected to the inner wall of the top of the outer shell 331. The elastic telescopic rod 3321 belongs to the prior art. The elastic telescopic rod 3321 includes a mother rod, a son rod, and a spring structure, which belongs to the prior art and will not be described in detail here;

[0075] The connecting block 3322 is connected to the bottom ends of the two groups of elastic telescopic rods 3321. As can be seen from the attachment Figure 4-5 The bottom of the connecting block 3322 contacts the outer end of the top of the movable strip 325. Specifically, when the outer ring 324 enters the round hole in the sleeve seat 31 upward, the movable strip 325 enters from the movable opening 3311 and the through opening. The movable strip 325 causes the connecting block 3322 to move upward and squeeze the elastic telescopic rod 3321. When the connecting cable 4 is connected to the connector 2, at this time, the top of the movable strip 325 fits against the inner wall of the top of the through opening in the sleeve seat 31. It should be noted that a rectangular opening (not shown in the figure) penetrates through the connecting block 3322 to avoid interference with the second contact rod 3332 passing through the waist-shaped hole 326 later;

[0076] There are two groups of movable sealing plates 3323, which are respectively inserted into the two sides of the sleeve seat 31 movably. The two groups of movable sealing plates 3323 are respectively placed in the two outer shells 331. Specifically, when the connector 2 and the connecting cable 4 are separated, the inner ends of the two groups of movable sealing plates 3323 move closer to each other until they can block the relative ends of the connector 2 and the connecting cable 4;

[0077] As can be seen from the attachment Figure 4-5 When the connector 2 and the connecting cable 4 are connected, the inner ends of the movable sealing plates 3323 are placed outside the connection between the connector 2 and the connecting cable 4;

[0078] The outer end of the movable sealing plate 3323 is placed in the outer shell 331, and an insert block 3325 is fixed at the bottom position of its outer end;

[0079] The elastic member 3324 preferably uses a spring. One end of the elastic member 3324 is connected to the insert block 3325, and the other end is fixed to the inner wall of the side of the outer shell 331 away from the sleeve seat 31. When the movable strip 325 causes the connecting block 3322 to move upward, the wedge block 3326 causes the movable sealing plate 3323 to move outward to facilitate the connection of the connector 2 and the connecting cable 4;

[0080] The first contact rod 3327 is fixed to the bottom of one end of the insert block 3325 away from the elastic member 3324. A ball is movably embedded at one end of the first contact rod 3327 away from the insert block 3325. A wedge block 3326 that cooperates with the ball on the contact rod is provided on one side of the connecting block 3322 away from the sleeve seat 31. The vertical cross-section of the wedge block 3326 is a right trapezoid. As can be seen from the appendix Figure 4-5 When the top of the movable strip 325 fits against the inner wall of the top of the through hole in the sleeve seat 31, the first contact rod 3327 is located below the inclined surface of the wedge block 3326. When the movable strip 325 moves downward, the connecting block 3322 moves downward, causing the wedge block 3326 to move downward. As a result, a gap is generated between the first contact rod 3327 and the wedge block 3326. Under the action of the elastic member 3324, the movable sealing plate 3323 moves into the sleeve seat 31;

[0081] It should be noted that the movable sealing plate 3323 is placed between the front and rear elastic telescopic rods 3321, and the middle parts of the movable strip 325 and the connecting block 3322 correspond;

[0082] Please refer to Figure 4-5 , the positioning portion 333 includes: a moving plate 3331, a second contact rod 3332, and a driving screw 3333;

[0083] Among them, the moving plate 3331 is slidably arranged on the inner wall of the bottom of the housing 331. The bottom area of the moving plate 3331 is larger than the area of the movable opening 3311. When the moving plate 3331 moves and contacts the outer wall of the sleeve seat 31, it blocks the movable opening 3311 at the bottom of the housing 331 and the second contact rod 3332 corresponds to the outer end of the bottom of the movable strip 325. Initially, the moving plate 3331 is moved to the outside of the movable opening 3311 to avoid interfering with the entry of the movable strip 325;

[0084] One end of the driving screw 3333 is rotatably connected to the side of the moving plate 3331 away from the sleeve seat 31 through a bearing, and the other end threadedly penetrates through the outside of the housing 331 and is fixed with a driving handwheel for the user to rotate, so as to manually adjust the position of the moving plate 3331;

[0085] The second contact rod 3332 is fixed to the top of the moving plate 3331. As can be seen from the appendix Figure 4 The top of the second contact rod 3332 abuts against the bottom of the movable strip 325 and is located outside the waist-shaped hole 326. The top of the second contact rod 3332 can be movably abutted against the bottom of the movable strip 325 by a ball. The second contact rod 3332 and the ball can both pass through the waist-shaped hole 326 and the rectangular hole on the connecting block 3322;

[0086] It should be noted that when the top of the movable bar 325 fits against the inner wall of the top of the through hole in the sleeve seat 31, the movable plate 3331 can be moved by rotating the driving handwheel until the movable plate 3331 contacts the outer wall of the sleeve seat 31. At this time, the ball at the top of the second contact rod 3332 contacts the outer end of the bottom of the movable bar 325. When water enters, the water-absorbing and swelling ring 328 swells, causing the movable bar 325 to move outward. The movement of the movable bar 325 aligns the waist-shaped hole 326 with the second contact rod 3332. At this time, under the action of the elastic telescopic rod 3321, the movable bar 325 is pushed downward, causing the second contact rod 3332 to pass through the waist-shaped hole 326 and the rectangular hole in the connecting block 3322;

[0087] Furthermore, a pressure sensor is provided on the top of one set of movable plates 3331. The pressure sensor is connected to the input end of an external controller, and the output end of the external controller can be connected to an external warning device. When the movable bar 325 is pushed downward by the connecting block 3322 and contacts the pressure sensor, the pressure sensor detects the pressure and sends a signal to the external controller, and the external controller controls the external warning device to remind the staff;

[0088] Optionally, the model of the pressure sensor can be the QDW90A pressure sensor, and the external controller can be a PLC controller with the model Siemens 200. Of course, the pressure sensor and the controller are not limited to the above; the warning device can be a buzzer alarm, and the pressure sensor can be connected to an external power supply through a wire.

[0089] In summary, the working principle of a marine cooling tower control box is as follows:

[0090] The outer ring 324 enters the sleeve seat 31, so that the movable bars 325 on both sides respectively correspond to the through holes on the sleeve seat 31 and the movable openings 3311 on one side of the outer shell 331, and the outer ends of the movable bars 325 are placed inside the outer shell 331. The outer ring 324 enters the sleeve seat 31 upward, and the movable bar 325 contacts the connecting block 3322, causing the connecting block 3322 to move upward. When the top of the movable bar 325 contacts the inner wall of the top of the through hole on the sleeve seat 31, at this time, the bottom of the sealing ring 322 fits against the bottom of the sleeve seat 31, and when the connecting block 3322 moves upward, the movable sealing plate 3323 is moved outward through the cooperation of the wedge-shaped block 3326 and the first contact rod 3327, so as to connect the connecting cable 4 to the connector 2. After the connecting cable 4 is connected to the connector 2, manually rotate the driving screw 3333 to move the movable plate 3331 to contact the outer wall of the sleeve seat 31. At this time, the second contact rod 3332 slides and abuts against the outer end of the bottom of the movable bar 325 to ensure the stable connection between the connecting cable 4 and the connector 2;

[0091] When the external liquid seeps into the sleeve seat 31, the seeped liquid enters between the outer ring 324 and the inner ring 323 through the water seepage holes 327, and then is absorbed by the water-absorbing and swelling ring 328. The water-absorbing and swelling ring 328 swells, thus pushing the arc-shaped plate to move between the outer ring 324 and the inner ring 323. Subsequently, the movable bar 325 moves horizontally, and the waist-shaped hole 326 on the movable bar 325 gradually corresponds to the contact rod two 3332. When they correspond, the elastic telescopic rod 3321 compresses the connection block 3322 to make the movable bar 325 move downward. The contact rod two 3332 passes through the waist-shaped hole 326 and the rectangular opening. The movable bar 325 moves downward, and then the outer ring 324 and the sealing ring 322 drive the connection cable 4 to separate downward from the connector 2. At the same time, the connection block 322 moves downward through the cooperation of the wedge-shaped block 3326 and the contact rod one 3327 to make the movable sealing plate 3323 move into the sleeve seat 31. The inner end of the movable sealing plate 3323 moves between the connection cable 4 and the connector 2 after they are separated to prevent the seeped liquid from interfering with the connection ends of the two.

[0092] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine cooling tower control box, characterized in that, Including: A control box body (1), with multiple sets of connectors (2) arranged at the bottom of the control box body (1), and the connectors (2) are used for plugging one end of a connection cable (4); and, A waterproof self - retracting part (3), arranged at the connection part between the connector (2) and the connection cable (4); where, The waterproof self - retracting part (3) includes: A sleeve seat (31), movably sleeved outside the connector (2), and the sleeve seat (31) is detachably connected to the top of the control box body (1), and the connection part between the connector (2) and the connection cable (4) is placed inside the sleeve seat (31); A waterproof sealing part (32), arranged inside the sleeve seat (31) for sealing the connection part between the connector (2) and the connection cable (4); and, A self - retracting driving part (33), arranged on the outer wall of the sleeve seat (31) for separating the connection cable (4) from the connector (2) when water enters; The waterproof sealing part (32) includes: An installation cylinder (321), fixedly sleeved on the outer wall of the connection cable (4); A sealing ring (322), detachably and fixedly sleeved on the outer wall of the installation cylinder (321) for blocking and sealing the bottom of the sleeve seat (31); An inner ring (323), fixedly arranged at the top of the sealing ring (322) and sleeved on the outer wall of the installation cylinder (321), and the inner ring (323) is placed inside the sleeve seat (31); and, An outer ring (324), fixedly arranged at the top of the sealing ring (322) and movably sleeved outside the inner ring (323), the outer ring (324) is adapted to the inner cavity of the sleeve seat (31), a limiting ring is arranged at the top between the outer ring (324) and the inner ring (323), and concave openings are formed on both sides of the outer ring (324); The waterproof sealing part (32) further includes: Two movable bars (325), the two movable bars (325) are respectively movably inserted into the concave openings on both sides of the outer ring (324), one end of the movable bar (325) passes through the concave opening and extends to the inside of the outer ring (324) to be connected with an arc - shaped plate, and a waist - shaped hole (326) is formed through the top of the movable bar (325) near the inner ring (323); A water - absorbing and swelling ring (328), sleeved on the outer wall of the inner ring (323) and placed at a position below the limiting ring, and the outer side of the water - absorbing and swelling ring (328) is in contact with the inner side of the arc - shaped plate; and, Multiple water seepage holes (327), multiple groups of the water seepage holes (327) are arranged in an annular array at the lower end of the outer periphery of the outer ring (324) for the liquid that seeps in to enter between the outer ring (324) and the inner ring (323); The self - retracting driving part (33) includes: Two outer shells (331), the two outer shells (331) are respectively fixedly arranged on both sides of the sleeve seat (31) and correspond to the movable bars (325), a movable opening (3311) for the movable bar (325) to enter is formed at the bottom of the outer shell (331) near the sleeve seat (31), and a through - opening communicating with the outer shell (331) and for the movable bar (325) to enter is formed at the bottom of the sleeve seat (31); The top-opening part (332) is arranged at the top inside the housing (331) and is used to drive the connection cable (4) to separate from the connector (2) when water enters; and, The positioning part (333) is arranged at the bottom inside the housing (331) and is used to stably connect the connection cable (4) and the connector (2) during normal use.

2. The marine cooling tower control box according to claim 1, characterized in that: The top-opening part (332) includes: Elastic telescopic rods (3321), two groups are provided, and the two groups of elastic telescopic rods (3321) are symmetrically arranged at the top inside the housing (331), and the top ends of the elastic telescopic rods (3321) are connected to the inner wall of the top of the housing (331); and, A connection block (3322) is jointly connected to the bottom ends of the two groups of elastic telescopic rods (3321). The bottom of the connection block (3322) fits against one end of the top of the movable strip (325) far from the inner ring (323), so a rectangular opening penetrates through the connection block (3322).

3. The marine cooling tower control box according to claim 2, characterized in that: The top-opening part (332) further includes: Movable sealing plates (3323), two groups are provided, and the two groups of movable sealing plates (3323) are respectively movably inserted on both sides of the sleeve seat (31). One end of the movable sealing plate (3323) corresponds to the connection part of the connector (2) and the connection cable (4), and the other end of the movable sealing plate (3323) is placed inside the housing (331). The movable sealing plate (3323) is also placed between the two groups of elastic telescopic rods (3321); Insert blocks (3325) are fixedly arranged at the bottom of the movable sealing plate (3323) and at one end far from the sleeve seat (31); An elastic member (3324), one end is connected to the insert block (3325), and the other end is connected to the inner wall of one side of the housing (331) far from the sleeve seat (31); A first contact rod (3327) is fixed to the bottom of one end of the insert block (3325) far from the elastic member (3324). A ball is movably embedded at one end of the first contact rod (3327) far from the insert block (3325); and, A wedge-shaped block (3326) is fixedly arranged on one side of the connection block (3322) and is used for slidingly abutting against the ball at one end of the first contact rod (3327), and is used to drive the movable sealing plate (3323) to move into the sleeve seat (31) when the connection block (3322) moves downward.

4. The marine cooling tower control box according to claim 3, characterized in that: The positioning part (333) includes: A moving plate (3331) is slidably arranged at the bottom of the inner cavity of the housing (331). The inner side of the moving plate (3331) fits against the outer wall of the sleeve seat (31) and is used to block the movable opening (3311) at the bottom of the housing (331) and abut against the outer end of the bottom of the movable strip (325); A second contact rod (3332) is fixedly arranged at the top of the moving plate (3331). A ball is embedded at the top of the second contact rod (3332). The ball at the top of the second contact rod (3332) slidably abuts against the outer end of the bottom of the movable strip (325). The second contact rod (3332) and the ball at its top can both pass through the waist-shaped hole (326) on the movable strip (325) and the rectangular opening on the connection block (3322); and, The driving screw (3333) is rotatably connected to the outside of the moving plate (3331) at one end, and movably penetrates through the outside of the housing (331) at the other end and is fixed with a driving handwheel.

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