Sandwich watertight structure and watertight joint for lead penetration
By adopting a double-layer sandwich watertight structure and a matching design of positioning blocks/positioning grooves, the difficulty of alignment and poor sealing of existing watertight joints when passing wires in high-pressure water environments is solved, and more efficient threading quality and sealing performance are achieved.
Patent Information
- Application Number
- CN202422018867.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-20
AI Technical Summary
When existing water-tight joints penetrate wires in high-pressure water environments, there are problems such as difficulty in threading small holes and poor sealing caused by rebound of rubber core, which affects the quality and efficiency of threading.
A double-layer sandwich watertight structure is adopted, including a support plate, a pressing plate and an elastic inner core. Each part is aligned and assembled by the fitting of the positioning block and the positioning groove, and a tapered surface that cooperates with the elastic inner core is provided on the pressing plate to suppress the rebound of the inner core.
Improve the threading quality and efficiency, ensure the fit between the inner core hole and the wire, prevent water seepage in the hole, and enhance the sealing performance of multiple inner core holes.
Smart Images
Figure CN222864376U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cabin-penetrating pipeline structures, in particular to a sandwich watertight structure and a watertight joint for conductors passing through cabins. Background Art
[0002] At present, the structural strain measurement in submarine structural models or actual ship tests adopts the electrical measurement method based on strain gauges, and the strain gauges are connected to the data acquisition instrument through measuring wires. Because the measured parts of the structure are often in a water pressure environment, the strain gauge measurement wires involve the problem of watertight penetration.
[0003] The watertight joint is a type of penetration structure commonly used in water pressure tests. It is mainly composed of a compression nut, a base, a sandwich kit, and a nylon flat washer. The measuring wire passes through the small hole on the sandwich kit. The sealing principle is that the compression nut pre-tightens the metal cover in the sandwich kit, squeezing the rubber core in the sandwich kit to deform, so that the measuring wire fits against the rubber core hole. Under the action of water pressure, the squeezing effect is even greater, and the wire fits tightly against the rubber core to achieve high-pressure sealing. The metal cover and the base are sealed using a nylon flat washer.
[0004] The sandwich kit currently commonly uses a single-layer sandwich structure. This structure is simple, convenient and practical, but some shortcomings have been found in practical application, such as the difficulty in aligning the small hole threading and aligning the sandwich kit, which affects the threading quality and efficiency; for example, the rubber core often rebounds, the rubber hole and the measuring wire do not fit well, and water seeps at the small hole. Utility Model Content
[0005] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a sandwich watertight structure and a watertight joint for wire threading, thereby improving the threading quality and efficiency, suppressing the rebound of the inner core, ensuring the fit between the inner core hole and the wire, and preventing water seepage at the hole.
[0006] The technical solution adopted by the utility model is as follows:
[0007] A watertight sandwich structure for wire passing through a cabin, comprising
[0008] A support plate, the support plate comprising a first body, the first body being provided with a first through hole, and the first body being provided with a first positioning block;
[0009] A clamping plate, the clamping plate comprising a second body, the second body being provided with a second through hole, a second positioning block and a retaining ring being provided on one side of the second body, the second positioning block being located in an inner ring of the retaining ring, and a side wall of the inner ring of the retaining ring being a conical surface;
[0010] An elastic inner core, the elastic inner core is located between the support plate and the pressing plate, the elastic inner core comprises a block body, an inner core hole is arranged on the block body, positioning grooves are arranged on both end surfaces of the elastic inner core, a frustum structure is arranged at one end of the elastic inner core, and the frustum structure cooperates with the inner ring side wall of the retaining ring;
[0011] The first positioning block and the second positioning block respectively cooperate with the positioning grooves on the two end surfaces of the elastic inner core to align the first through hole, the inner core hole and the second through hole.
[0012] As a further improvement of the above technical solution:
[0013] There are two elastic inner cores, and a sandwich panel is arranged between the two elastic inner cores. The sandwich panel includes a plate-like body, and a central through hole is arranged on the plate-like body. Third positioning blocks are arranged on both side surfaces of the plate-like body. The third positioning blocks cooperate with the positioning groove to align the central through hole with the inner core hole.
[0014] The two elastic inner cores are radially symmetrical with respect to the sandwich panel.
[0015] The outer peripheral surface of the sandwich panel is provided with a sealing ring, and the sealing ring is sealed and matched with the inner hole of the base of the watertight joint.
[0016] There are two third positioning blocks on both side surfaces of the plate-like body.
[0017] There are two positioning grooves on both end surfaces of the elastic inner core.
[0018] A limiting ring is arranged on one side of the first body, the first positioning block is located in the inner ring of the limiting ring, the inner ring side wall of the limiting ring is a conical surface, and the limiting ring cooperates with the end of the elastic inner core.
[0019] A watertight joint for wire passage through a cabin, the watertight joint comprising a base and a compression nut detachably mounted on one end of the base, the base being provided with the above-mentioned sandwich watertight structure for wire passage through a cabin, the compression plate corresponding to the compression nut of the watertight joint, the support plate being sealingly connected to the base, the first through-hole, the inner core hole and the second through-hole being used for passing the wire, and the inner core hole being sealingly connected to the wire.
[0020] As a further improvement of the above technical solution:
[0021] An annular boss is arranged in the inner hole of the base, a gasket is arranged on the annular boss, and the first body is sealed and connected to the base through the gasket.
[0022] The outer peripheral surface of the second body is provided with an ear plate, the inner hole side wall of the base is provided with a slot, and the ear plate is matched with the slot.
[0023] The beneficial effects of the utility model are as follows:
[0024] The utility model has a compact and reasonable structure and is easy to operate. The clamping plate, the support plate and the elastic inner core can be assembled as a whole by adopting the matching mode of the positioning block and the positioning groove, so that the threading is performed after the holes for threading the wires are aligned, thereby improving the threading quality and efficiency. A conical surface matching the elastic inner core is arranged on the clamping plate to inhibit the rebound of the elastic inner core, ensure the fit between the inner core hole and the wire, and prevent the occurrence of water seepage at the hole.
[0025] The utility model also has the following advantages:
[0026] (1) A sandwich panel is arranged between two elastic inner cores to form a double-layer sandwich watertight structure. Two seals are arranged for the same conductor to reduce the probability of water seepage in the sandwich watertight structure.
[0027] (2) A cone structure matching structure of a cone surface and an elastic inner core is provided on both the support plate and the clamping plate to suppress the rebound of the elastic inner core from both ends of the elastic inner core, thereby ensuring the fit between the inner core hole and the wire and further improving the sealing performance of the multiple inner core holes. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of the watertight joint of the utility model (single-layer sandwich).
[0029] Figure 2 It is a structural schematic diagram of the watertight sandwich structure of the utility model (single-layer sandwich).
[0030] Figure 3 It is a structural schematic diagram of the watertight joint of the utility model (double-layer sandwich).
[0031] Figure 4 It is a structural schematic diagram of the watertight sandwich structure of the utility model (double-layer sandwich).
[0032] Figure 5 It is a structural schematic diagram of the pressing plate of the utility model.
[0033] Figure 6 It is a structural schematic diagram of the elastic inner core of the utility model.
[0034] Figure 7 It is a structural schematic diagram of the sandwich panel of the utility model.
[0035] Figure 8 It is a structural schematic diagram of the support plate of the utility model.
[0036] Fig. 9 It is a structural schematic diagram of the base of the utility model.
[0037] Fig.10 This is a schematic diagram of the assembly process of the watertight joint of the utility model.
[0038] in:
[0039] 1. Compression nut; 2. Wire; 3. Base; 31. Slot; 4. Gasket;
[0040] 5. Pressing plate; 50. Second through hole; 51. Second body; 52. Retaining ring; 53. Second positioning block; 54. Ear plate;
[0041] 6. elastic inner core; 60. inner core hole; 61. block body; 62. frustum structure; 63. positioning groove;
[0042] 7. Support plate; 70. First through hole; 71. First body; 72. Limiting ring; 73. First positioning block;
[0043] 8. Sandwich panel; 80. Middle perforation; 81. Plate-shaped body; 82. Sealing ring; 83. Third positioning block. DETAILED DESCRIPTION
[0044] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.
[0045] Embodiment 1:
[0046] like Figure 1-Figure 2 , Figure 5-Figure 8 As shown, the sandwich watertight structure for wire passage in this embodiment includes a support plate 7, a pressing plate 5 and an elastic inner core 6.
[0047] The support plate 7 includes a first body 71 , a first through hole 70 is provided on the first body 71 , and a first positioning block 73 is provided on the first body 71 ;
[0048] The pressing plate 5 includes a second body 51, a second through hole 50 is provided on the second body 51, a second positioning block 53 and a retaining ring 52 are provided on one side of the second body 51, the second positioning block 53 is located in the inner ring of the retaining ring 52, and the inner ring side wall of the retaining ring 52 is a conical surface;
[0049] The elastic inner core 6 is located between the support plate 7 and the pressing plate 5. The elastic inner core 6 includes a block body 61. The block body 61 is provided with an inner core hole 60. Both end surfaces of the elastic inner core 6 are provided with positioning grooves 63. One end of the elastic inner core 6 is provided with a frustum structure 62. The frustum structure 62 cooperates with the inner ring side wall of the retaining ring 52.
[0050] The first positioning block 73 and the second positioning block 53 respectively cooperate with the positioning grooves 63 on both end surfaces of the elastic inner core 6 to align the first through hole 70 , the inner core hole 60 and the second through hole 50 .
[0051] Specifically, the base 3 of the watertight joint is a tubular structure, which can generally be welded on the bulkhead. The inner hole of the base 3 is provided with an annular boss, and a clamping nut 1 is installed at one end of the base 3 opposite to the annular boss, and the clamping nut 1 is connected to the internal thread in the hole of the base 3 through an external thread; the first through hole 70, the inner core hole 60 and the second through hole 50 are used to pass the wire 2, the elastic inner core 6 can be made of elastic rubber, the support plate 7 and the clamping plate 5 are steel plate-like components; the conical surface of the inner ring side wall of the retaining ring 52 and the frustum structure 62 are both truncated cones; the number of the first through hole 70, the inner core hole 60 and the second through hole 50 is consistent with the number of wires 2 that need to pass through the cabin.
[0052] When assembling the sandwich watertight structure of this embodiment, the first positioning block 73 of the support plate 7 is matched with the positioning groove 63 on the lower end surface of the elastic inner core 6, so that the first through hole 70 and the inner core hole 60 are aligned, and the second positioning block 53 of the clamping plate 5 is matched with the positioning groove 63 on the upper end surface of the elastic inner core 6, so that the second through hole 50 and the inner core hole 60 are aligned.
[0053] After the sandwich watertight structure of this embodiment is installed in the base 3, the clamping nut 1 is rotated to make the end of the clamping nut 1 squeeze the clamping plate 5, and the support plate 7 limits the elastic inner core 6 under the support of the annular boss. After the elastic inner core 6 is compressed and deformed, the inner core hole 60 fits with the conductor 2. Under the action of the conical surface of the retaining ring 52 and the frustum structure 62 of the elastic inner core 6, the elastic inner core 6 is limited, so that the compression deformation of the elastic inner core 6 is fully developed into the hole, and the rebound of the inner core can be suppressed.
[0054] The sandwich watertight structure of the present embodiment adopts the matching mode of positioning blocks and positioning grooves to enable the clamping plate 5, the support plate 7 and the elastic inner core 6 to be assembled as a whole, ensuring that the holes for threading the wire 2 are aligned before threading, thereby improving the threading quality and efficiency. A conical surface matching the elastic inner core 6 is provided on the clamping plate 5 to suppress the rebound of the elastic inner core 6, ensure the fit between the inner core hole 60 and the wire 2, and prevent water seepage at the hole.
[0055] Embodiment 2:
[0056] There is still a problem in the prior art: since the sizes of the inner core holes 60 vary during the processing, the thickness of the insulating layer wrapped around the wire 2 may also vary, and water seepage often occurs in some of the inner core holes 60. To address this problem, this embodiment improves the single-layer sandwich structure of the first embodiment into a double-layer sandwich structure.
[0057] Based on the first embodiment, Figure 3-Figure 8As shown, there are two elastic inner cores 6, and a sandwich panel 8 is arranged between the two elastic inner cores 6. The sandwich panel 8 includes a plate-like body 81, and a middle through hole 80 is arranged on the plate-like body 81. The two side surfaces of the plate-like body 81 are both provided with third positioning blocks 83. The third positioning blocks 83 cooperate with the positioning groove 63 to align the middle through hole 80 with the inner core hole 60. Specifically, the sandwich panel 8 is made of steel material.
[0058] The sandwich watertight structure of this embodiment is provided with a sandwich plate 8 between two elastic inner cores 6 to form a double-layer sandwich watertight structure. Two seals are provided for the same conductor 2 to reduce the probability of water seepage in the sandwich watertight structure.
[0059] Further, if Figure 4 , Figure 7 As shown, a sealing ring 82 is provided on the outer circumference of the sandwich panel 8, and the sealing ring 82 is sealed with the inner hole of the base 3 of the watertight joint, which further ensures the sealing connection effect between the sandwich watertight structure and the base 3. Specifically, an annular groove is provided on the outer circumference of the sandwich panel 8, and the sealing ring 82 is installed in the groove.
[0060] Further, if Figure 4 As shown, the two elastic inner cores 6 are radially symmetrical with respect to the sandwich panel 8 .
[0061] A limiting ring 72 is disposed on one side of the first body 71 , and the first positioning block 73 is located in the inner ring of the limiting ring 72 . The inner ring side wall of the limiting ring 72 is a conical surface, and the limiting ring 72 cooperates with the end of the elastic inner core 6 .
[0062] In another embodiment, when the number of elastic inner cores 6 is one, a frustum structure 62 can be provided at both ends of the elastic inner core 6, the frustum structure 62 at one end cooperates with the retaining ring 52 on the clamping plate 5, and the frustum structure 62 at the other end cooperates with the limiting ring 72 of the support plate 7, which is not shown in the accompanying drawings.
[0063] In this embodiment, there are two elastic inner cores 6, one end of the elastic inner core 6 is provided with a frustum structure 62, and the other end is a plane structure. The elastic inner core 6 is radially symmetrically arranged with respect to the sandwich panel 8, so that the frustum structure 62 of the other elastic inner core 6 can be limited by the cone surface, such as Figure 4 shown.
[0064] A cone structure 62 cooperating with the cone surface and the elastic inner core 6 is provided on the support plate 7 and the clamping plate 5 to suppress the rebound of the elastic inner core 6 from both ends of the elastic inner core 6, ensure the fit between the inner core hole 60 and the conductor 2, and further improve the sealing performance of the multiple inner core holes 60.
[0065] The outer peripheral shapes of the pressing plate 5, the supporting plate 7, the sandwich plate 8 and the elastic inner core 6 of this embodiment only need to be consistent with the inner hole shape corresponding to the base 3, and are generally circular.
[0066] In order to facilitate processing and installation, the positioning structure adopts two-point positioning, such as Figure 5-Figure 8 As shown, there are two third positioning blocks 83 on both side surfaces of the plate-like body 81. There are two positioning grooves 63 on both end surfaces of the elastic inner core 6. There are also two corresponding first positioning blocks 73 on the first body 71 and two second positioning blocks 53 on the second body 51. The above two positioning blocks or two positioning grooves 63 are both located on the diameter of the base 3 and are equidistant from the center of the base 3.
[0067] Embodiment three:
[0068] The watertight joint for wire passage through the cabin of this embodiment includes a base 3 and a clamping nut 1 detachably mounted on one end of the base 3. The sandwich watertight structure for wire passage through the cabin in embodiment one or embodiment two is arranged in the base 3. The clamping plate 5 corresponds to the clamping nut 1 of the watertight joint. The support plate 7 is sealed and connected to the base 3. The first through hole 70, the inner core hole 60 and the second through hole 50 are used for passing the wire 2. The inner core hole 60 is sealed and connected to the wire 2.
[0069] Further, if Figure 1 , Fig. 9 As shown, an annular boss is arranged in the inner hole of the base 3 , a gasket 4 is arranged on the annular boss, and the first body 71 is sealed and connected to the base 3 via the gasket 4 .
[0070] Further, if Figure 1 , Fig. 9 As shown, the outer circumference of the second body 51 is provided with an ear plate 54, and the inner hole side wall of the base 3 is provided with a slot 31, and the ear plate 54 cooperates with the slot 31. The ear plate 54 is used to prevent the pressing plate 5 and the base 3 from rotating relative to each other.
[0071] When the watertight joint of this embodiment is used, Fig.10 As shown:
[0072] 1. Pre-weld and install the base 3 at the corresponding penetration position;
[0073] Second, place the gasket 4 on the annular boss of the base 3, and lead the wire 2 out of the base 3. The number of wires 2 should not exceed 60 inner core holes of the sandwich watertight structure. Fig.10 Middle a;
[0074] 3. Assemble the sandwich watertight structure, pass the wires 2 one by one according to the process, and mark them, such as Fig.10 Middle b;
[0075] 4. After the wire 2 is passed through and tied, install the sandwich watertight structure into the base 3, and check the stability of the pressing plate 5 and the supporting plate 7. Fig.10 Middle c;
[0076] 5. Install the compression nut 1 and tighten it with a special tool to achieve the purpose of watertight pre-tightening. Fig.10 Middle d.
[0077] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.
Claims
1. A watertight sandwich structure for wire passage, characterized in that: include A support plate (7), the support plate (7) comprising a first body (71), the first body (71) being provided with a first through hole (70), and the first body (71) being provided with a first positioning block (73); A clamping plate (5), the clamping plate (5) comprising a second body (51), the second body (51) being provided with a second through hole (50), a second positioning block (53) and a retaining ring (52) being provided on one side of the second body (51), the second positioning block (53) being located in an inner ring of the retaining ring (52), and the inner ring side wall of the retaining ring (52) being a conical surface; An elastic inner core (6), the elastic inner core (6) being located between the support plate (7) and the pressing plate (5), the elastic inner core (6) comprising a block-shaped body (61), an inner core hole (60) being provided on the block-shaped body (61), positioning grooves (63) being provided on both end surfaces of the elastic inner core (6), a frustum structure (62) being provided at one end of the elastic inner core (6), the frustum structure (62) being matched with the inner ring side wall of the retaining ring (52); The first positioning block (73) and the second positioning block (53) respectively cooperate with the positioning grooves (63) on the two end surfaces of the elastic inner core (6) to align the first through hole (70), the inner core hole (60) and the second through hole (50).
2. The watertight sandwich structure for wire passage according to claim 1, characterized in that: The number of the elastic inner cores (6) is two, and a sandwich panel (8) is arranged between the two elastic inner cores (6). The sandwich panel (8) comprises a plate-like body (81), and a middle through hole (80) is arranged on the plate-like body (81). Third positioning blocks (83) are arranged on both side surfaces of the plate-like body (81), and the third positioning blocks (83) cooperate with the positioning groove (63) to align the middle through hole (80) with the inner core hole (60).
3. The watertight sandwich structure for wire passage according to claim 2, characterized in that: The two elastic inner cores (6) are radially symmetrical with respect to the sandwich panel (8).
4. The watertight sandwich structure for wire passage according to claim 2, characterized in that: The outer peripheral surface of the sandwich panel (8) is provided with a sealing ring (82), and the sealing ring (82) is in sealing cooperation with the inner hole of the base (3) of the watertight joint.
5. The watertight sandwich structure for wire passage according to claim 2, characterized in that: There are two third positioning blocks (83) on both side surfaces of the plate-like body (81).
6. The watertight sandwich structure for wire passage as claimed in any one of claims 1 to 5, characterized in that: There are two positioning grooves (63) on both end surfaces of the elastic inner core (6).
7. The watertight sandwich structure for wire passage as claimed in any one of claims 1 to 5, characterized in that: A limiting ring (72) is arranged on one side of the first body (71), the first positioning block (73) is located in the inner ring of the limiting ring (72), the inner ring side wall of the limiting ring (72) is a conical surface, and the limiting ring (72) cooperates with the end of the elastic inner core (6).
8. A watertight joint for wires passing through a cabin, characterized in that: The watertight joint comprises a base (3) and a clamping nut (1) detachably mounted on one end of the base (3); a sandwich watertight structure for wire passage as described in any one of claims 1 to 7 is arranged in the base (3); the clamping plate (5) corresponds to the clamping nut (1) of the watertight joint; the support plate (7) is sealedly connected to the base (3); the first through hole (70), the inner core hole (60) and the second through hole (50) are used for passing the wire (2); the inner core hole (60) is sealedly connected to the wire (2).
9. The watertight joint for wire passage as claimed in claim 8, characterized in that: An annular boss is arranged in the inner hole of the base (3), a gasket (4) is arranged on the annular boss, and the first body (71) is sealedly connected to the base (3) via the gasket (4).
10. The watertight joint for wire passage as claimed in claim 8, characterized in that: The outer peripheral surface of the second body (51) is provided with an ear plate (54), the inner hole side wall of the base (3) is provided with a slot (31), and the ear plate (54) cooperates with the slot (31).