CN107806965B - Tightness test device and tightness test method for watertight cable stuffing box - Google Patents
Tightness test device and tightness test method for watertight cable stuffing box Download PDFInfo
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- CN107806965B CN107806965B CN201711184346.1A CN201711184346A CN107806965B CN 107806965 B CN107806965 B CN 107806965B CN 201711184346 A CN201711184346 A CN 201711184346A CN 107806965 B CN107806965 B CN 107806965B
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000010998 test method Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a tightness test device and a tightness test method for watertight cable stuffing boxes, which are characterized in that tightness tests of watertight cable stuffing boxes with different specifications are carried out through a plurality of pairs of box cable through holes and screw seats with different inner diameters arranged on a pressure box body, the watertight cable stuffing boxes with different specifications can be arranged on the screw seats with corresponding specifications and are penetrated by common cables to seal, and test work of the watertight cable stuffing boxes with different specifications can be simultaneously carried out through the pressure box body, so that test efficiency is effectively improved and the test device is simplified.
Description
Technical Field
The invention relates to the field of cable testing equipment, in particular to a tightness test device and a tightness test method for a watertight cable stuffing box.
Background
Due to the continuous development of maritime work and ship markets, the requirements for cables to pass through watertight bulkheads are higher and higher, and a set of simple and practical watertight cable stuffing box tightness test device is needed for developing and testing watertight characteristics of watertight cable stuffing boxes.
At present, a special test device and a special watertight cable are generally required for the tightness test of the watertight cable stuffing box, and the cost of pressure test materials and devices is high.
Disclosure of Invention
The invention aims to provide a tightness test device and a tightness test method for watertight cable stuffing boxes, which have high interchangeability and are applicable to tightness tests of cable stuffing boxes with different specifications.
The technical scheme adopted by the invention is as follows:
the tightness test device comprises a pressure box body and a box cover, wherein the pressure box body is arranged at the top of the top opening, the box cover can seal the top of the pressure box body, a plurality of box cable through holes with different inner diameters are formed in the side wall of the pressure box body, a plurality of screw thread seats fixedly connected with the side wall of the pressure box body are arranged on the outer side of each box cable through hole, seat cable through holes communicated with the box cable through holes are formed in each screw thread seat, an inner threaded hole coaxially arranged with the seat cable through holes is further formed in each screw thread seat, and at least one inner threaded hole with the same inner diameter and a screw thread seat of the seat cable through hole are formed in one side, opposite to each screw thread seat, of the side wall of the pressure box body.
Further as an improvement of the technical scheme of the invention, the shell of the pressure box body is axisymmetric, and any two screw seats of the internal threaded hole and the seat cable through hole with the same inner diameter are axisymmetrically arranged on the side wall of the pressure box body.
Further as an improvement of the technical scheme of the invention, each thread seat is fixed on the outer wall of the pressure tank body through welding, and two mutually communicated tank cable through holes and seat cable through holes are coaxially arranged and have equal inner diameters.
Further as the improvement of the technical scheme of the invention, the cross section of the pressure box body is circular, the top of the pressure box body is provided with a sealing seat fixed on the periphery of the pressure box body, and the sealing seat comprises a sealing ring part which surrounds the periphery of the pressure box body and vertically protrudes out of the top of the pressure box body and a locking ring part which surrounds the periphery of the sealing ring part and is lower than the sealing ring part in height.
Further as an improvement of the technical scheme of the invention, the middle part of the box cover is a box cover sealing area protruding out of the bottom of the box cover, and the outer diameter of the box cover sealing area is equal to the outer diameter of the sealing ring part.
Further as an improvement of the technical scheme of the invention, a plurality of bolt holes are arranged between the periphery of the sealing area of the case cover and the locking ring part, and the case cover and the locking ring part are in sealing connection through a plurality of locking bolts penetrating through the bolt holes on the case cover and the locking ring part.
Further as an improvement of the technical scheme of the invention, a pressurizing device communicated with the inside of the pressure box body is connected with the box cover, and a pressure gauge is arranged on the box cover.
A tightness test method of a watertight cable stuffing box comprises the following steps:
the pressure box comprises a pressure box body and a box cover, wherein the pressure box body is connected in an assembling and sealing mode, the box cover is positioned at the top of the pressure box body, and a pressurizing device communicated with the interior of the pressure box body is connected to the box cover;
a plurality of pairs of box cable through holes which are coaxially arranged are drilled on the side wall of the pressure box body, the inner diameters of the two box cable through holes of the same pair of box cable through holes are equal, the inner diameters of the box cable through holes of each pair of box cable through holes are unequal, screw thread seats are respectively arranged on the outer sides of the box cable through holes, so that seat cable through holes on each screw thread seat are coaxially arranged with the box cable through holes and have the same inner diameter, and the same pair of screw thread seats are respectively provided with inner threaded holes which have the same inner diameter and are coaxially arranged with the seat cable through holes;
the cable passes through two oppositely arranged box cable through holes and thread seats, watertight cable stuffing boxes are arranged on the outer sides of the thread seats, and the ends of the watertight cable stuffing boxes are in threaded connection with the internal thread holes on the thread seats;
opening the box cover, injecting liquid into the pressure box body, enabling the liquid to overflow the top of the cable positioned at the uppermost part, covering the cover, and locking bolts around the cover to seal;
starting a pressurizing device to pressurize, observing a pressure gauge, and increasing the pressure in the pressure tank body to a set value;
and (5) keeping pressure to observe the watertight performance of the watertight cable stuffing box, and completing the test.
The invention has the beneficial effects that: according to the tightness test device and the tightness test method for the watertight cable stuffing box, tightness tests of the watertight cable stuffing boxes with different specifications are carried out through the plurality of pairs of box cable through holes and the threaded seats with different inner diameters, the watertight cable stuffing boxes with different specifications can be installed on the threaded seats with corresponding specifications and are sealed by penetrating through common cables, and test work of the watertight cable stuffing boxes with different specifications can be carried out simultaneously through one pressure box body, so that test efficiency is effectively improved, and the test device is simplified.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view showing the overall structure of an embodiment of the present invention in a test state;
fig. 2 is a schematic diagram showing the installation state of the stuffing box of the watertight cable according to the embodiment of the present invention.
Detailed Description
Referring to fig. 1 and 2, the tightness test device of the watertight cable stuffing box comprises a pressure box body 1 arranged at the top opening and a box cover 2 capable of sealing the top of the pressure box body 1, wherein a plurality of pairs of box cable through holes 11 with different inner diameters are formed in the side wall of the pressure box body 1, a plurality of screw thread seats 3 fixedly connected with the side wall of the pressure box body 1 are arranged on the outer side of each box cable through hole 11, seat cable through holes 31 communicated with the box cable through holes 11 are formed in each screw thread seat 3, an inner threaded hole coaxial with the seat cable through holes 31 is formed in each screw thread seat 3, and at least one inner threaded hole with the same inner diameter and the screw thread seat 3 of the seat cable through holes 31 are formed in one side, opposite to each screw thread seat 3, of the side wall of the pressure box body 1.
According to the tightness test device and the tightness test method for the watertight cable stuffing box, tightness tests of the watertight cable stuffing boxes 10 with different specifications are carried out through the plurality of pairs of box cable through holes 11 with different inner diameters and the thread seats 3 arranged on the pressure box body 1, the watertight cable stuffing boxes 10 with different specifications can be installed on the thread seats 3 with corresponding specifications and are sealed by penetrating through common cables, and test work of the watertight cable stuffing boxes 10 with different specifications can be carried out simultaneously through the pressure box body 1, so that test efficiency is effectively improved, and the test device is simplified.
As a preferred embodiment of the present invention, the outer shell of the pressure tank body 1 is axisymmetric, and any two screw seats 3 having the female screw hole and the seat cable through hole 31 of the same inner diameter are axisymmetrically disposed on the side wall of the pressure tank body 1.
As a preferred embodiment of the present invention, each screw seat 3 is fixed to the outer wall of the pressure tank body 1 by welding, and two tank cable through holes 11 and seat cable through holes 31 communicating with each other are coaxially provided and have the same inner diameter.
As a preferred embodiment of the present invention, the cross section of the pressure tank body 1 is circular, the top of the pressure tank body 1 is provided with a sealing seat 12 fixed at the outer periphery of the pressure tank body 1, and the sealing seat 12 comprises a sealing ring part 121 surrounding the outer periphery of the pressure tank body 1 and vertically protruding from the top of the pressure tank body 1, and a locking ring part 122 surrounding the outer periphery of the sealing ring part 121 and having a lower height than the sealing ring part 121.
As a preferred embodiment of the present invention, the middle portion of the lid 2 is a lid sealing area 21 protruding from the bottom of the lid 2, and the lid sealing area 21 has an outer diameter equal to that of the sealing ring portion 121.
As a preferred embodiment of the present invention, a plurality of bolt holes are provided between the outer periphery of the cover sealing area 21 of the cover 2 and the locking ring portion 122, and the cover 2 and the locking ring portion 122 are hermetically coupled by a plurality of locking bolts passing through the bolt holes of the cover 2 and the locking ring portion 122.
As a preferred embodiment of the present invention, a pressurizing device 4 communicating with the interior of the pressure tank body 1 is connected to the tank cover 2, and a pressure gauge 5 is further provided on the tank cover 2.
A tightness test method of a watertight cable stuffing box comprises the following steps:
the pressure box comprises a pressure box body 1 and a box cover 2 positioned at the top of the pressure box body 1, which are assembled and connected in a closed manner, and a pressurizing device 4 communicated with the inside of the pressure box body 1 is connected to the box cover 2;
a plurality of pairs of box cable through holes 11 which are coaxially arranged are drilled on the side wall of the pressure box body 1, the inner diameters of two box cable through holes 11 of the same pair of box cable through holes 11 are equal, the inner diameters of the box cable through holes 11 of each pair are respectively unequal, screw thread seats 3 are respectively arranged on the outer sides of the box cable through holes 11, so that seat cable through holes 31 on each screw thread seat 3 are coaxially arranged with the box cable through holes 11, the inner diameters are equal, and inner threaded holes which have the same inner diameters and are coaxially arranged with the seat cable through holes 31 are respectively arranged on the same pair of screw thread seats 3;
the cable 20 passes through two box cable through holes 11 and thread seats 3 which are oppositely arranged, and watertight cable stuffing boxes 10 are arranged on the outer sides of the thread seats 3, so that the ends of the watertight cable stuffing boxes 10 are in threaded connection with internal threaded holes on the thread seats 3;
opening the box cover 2, injecting liquid into the pressure box body 1, allowing the liquid to flow over the top of the uppermost cable 20, covering a sealing cover, and locking the surrounding locking bolts for sealing;
starting a pressurizing device 4 to pressurize, observing a pressure gauge 5, and increasing the pressure in the pressure tank body 1 to a set value;
the watertight performance of the watertight cable stuffing box 10 is observed by maintaining pressure, and the test is completed.
According to the size specification of the watertight cable stuffing box 10 to be tested, a plurality of screw thread seats 3 with corresponding specifications are also arranged on the pressure box body 1, seat cable through holes 31 are arranged on the screw thread seats 3 and are communicated with box cable through holes 11 arranged on the pressure box body 1, and after cables 20 with different specifications matched with the watertight cable stuffing box 10 pass through the seat cable through holes 31 and the box cable through holes 11, the watertight cable stuffing box 10 is fixedly arranged outside the screw thread seats 3 for sealing.
The upper part of the pressure box body 1 is fixedly connected with the box cover 2 through a plurality of locking bolts, an annular sealing ring part 121 is arranged on a sealing seat 12 positioned on the periphery of the pressure box body 1, a box cover sealing area 21 covering the sealing ring part 121 is arranged below the box cover 2, and sealing rubber rings can be arranged in the sealing ring part 121 and the box cover sealing area 21 to realize better sealing connection.
The sealing ring portion 121 is provided so as to prevent the cover 2 from contacting the top of the pressure tank body 1 after being fastened, thereby affecting the sealing performance between the pressure tank body 1 and the cover 2.
The cable can be threaded into the pressure box body 1 through one screw seat 3 arranged in the same pair and can be threaded out through the other screw seat 3 arranged in the other pair on the other side of the pressure box body 1. The common cable can also be penetrated into the pressure box body 1 through one of the thread seats 3, and the cable end penetrating into the pressure box body 1 is sealed through the cable end socket.
The device can simultaneously carry out water tightness test on the thread seat 3 with a plurality of different specifications, and when the device is used for testing, the thread seat 3 without the watertight cable stuffing box 10 is sealed, so that the overall water tightness of the pressure box can be ensured, and the influence on the test result is avoided.
The present invention is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, which are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (7)
1. A tightness test method of a watertight cable stuffing box is characterized by comprising the following steps: the tightness test device of the watertight cable stuffing box comprises a pressure box body and a box cover, wherein the pressure box body is arranged at the top of the pressure box body, the box cover can be sealed at the top of the pressure box body, a plurality of box cable through holes with different inner diameter sizes are formed in the side wall of the pressure box body, a plurality of screw thread seats fixedly connected with the side wall of the pressure box body are arranged on the outer side of each box cable through hole, seat cable through holes communicated with the box cable through holes are formed in each screw thread seat, an inner threaded hole coaxial with the seat cable through holes is further formed in each screw thread seat, and at least one inner threaded hole with the same inner diameter and one screw thread seat with the same seat cable through hole are formed in one side, opposite to each screw thread seat, of the side wall of the pressure box body, and the tightness test method of the watertight cable stuffing box comprises the following steps:
the pressure box comprises a spliced and airtight pressure box body and a box cover positioned at the top of the pressure box body, wherein a pressurizing device communicated with the interior of the pressure box body is connected to the box cover;
a plurality of pairs of box cable through holes which are coaxially arranged are drilled on the side wall of the pressure box body, the inner diameters of two box cable through holes of the same pair of box cable through holes are equal, the inner diameters of the box cable through holes of each pair of box cable through holes are unequal, screw thread seats are respectively arranged on the outer sides of the box cable through holes, so that seat cable through holes on the screw thread seats are coaxially arranged with the box cable through holes, the inner diameters of the seat cable through holes are equal, and inner threaded holes which are coaxially arranged with the seat cable through holes are respectively arranged on the screw thread seats of the same pair;
the cable passes through two box cable through holes and thread seats which are oppositely arranged, watertight cable stuffing boxes are arranged on the outer sides of the thread seats, and the ends of the watertight cable stuffing boxes are in threaded connection with internal threaded holes on the thread seats;
opening the box cover, injecting liquid into the pressure box body, enabling the liquid to overflow the top of the cable positioned at the uppermost part, covering a sealing cover, and locking bolts around the sealing cover to seal the sealing cover;
starting the pressurizing device to pressurize, observing the pressure gauge, and increasing the pressure in the pressure box body to a set value;
and keeping pressure to observe the watertight performance of the watertight cable stuffing box, and completing the test.
2. The tightness test method of a watertight cable stuffing box according to claim 1, wherein: the shell of the pressure box body is axisymmetric, and any two of the threaded seats with the same inner diameter of the internal threaded hole and the seat cable through holes are axisymmetric on the side wall of the pressure box body.
3. The tightness test method of a watertight cable stuffing box according to claim 2, wherein: each thread seat is fixed on the outer wall of the pressure box body through welding, and two box cable through holes and seat cable through holes which are communicated with each other are coaxially arranged and have equal inner diameters.
4. The tightness test method of a watertight cable stuffing box according to claim 1, wherein: the cross section of pressure case body is circular, the top of pressure case body is equipped with the sealing seat of fixing at pressure case body periphery, the sealing seat is including encircling the sealing ring portion at pressure case body periphery and vertical salient in pressure case body top with encircle the periphery of sealing ring portion and highly be less than the locking ring portion of sealing ring portion.
5. The tightness test method of the watertight cable stuffing box according to claim 4, wherein: the middle part of the case cover is a case cover sealing area protruding out of the bottom of the case cover, and the outer diameter of the case cover sealing area is equal to the outer diameter of the sealing ring part.
6. The tightness test method of the watertight cable stuffing box according to claim 5, wherein: the box cover is positioned at the periphery of the box cover sealing area and is provided with a plurality of bolt holes, and the box cover is in sealing connection with the locking ring part through a plurality of locking bolts penetrating through the bolt holes on the box cover and the locking ring part.
7. The tightness test method of a watertight cable stuffing box according to claim 1, wherein: the pressure box is characterized in that a pressurizing device communicated with the inside of the pressure box body is connected with the box cover, and a pressure gauge is further arranged on the box cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711184346.1A CN107806965B (en) | 2017-11-23 | 2017-11-23 | Tightness test device and tightness test method for watertight cable stuffing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711184346.1A CN107806965B (en) | 2017-11-23 | 2017-11-23 | Tightness test device and tightness test method for watertight cable stuffing box |
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| Publication Number | Publication Date |
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| CN107806965A CN107806965A (en) | 2018-03-16 |
| CN107806965B true CN107806965B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711184346.1A Active CN107806965B (en) | 2017-11-23 | 2017-11-23 | Tightness test device and tightness test method for watertight cable stuffing box |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956032A (en) * | 2018-04-25 | 2018-12-07 | 中船西江造船有限公司 | A kind of multi-purpose pressure resistant testing device |
| CN112670922B (en) * | 2020-10-30 | 2022-06-10 | 沪东中华造船(集团)有限公司 | Temporary sealing method for ship air tightness detection cable penetration piece |
| CN113670525A (en) * | 2021-06-30 | 2021-11-19 | 沪东中华造船(集团)有限公司 | Cable stuffing box sealing device |
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| CN203365090U (en) * | 2013-07-02 | 2013-12-25 | 中国船舶重工集团公司第七二二研究所 | Hydraulic pressure detection device |
| WO2015143569A1 (en) * | 2014-03-28 | 2015-10-01 | Intelliview Technologies Inc. | Leak detection |
| CN105067199A (en) * | 2015-08-13 | 2015-11-18 | 南京高精船用设备有限公司 | Split type NBG airtight bulkhead stuffing box test device and application thereof |
| CN106198234A (en) * | 2016-08-24 | 2016-12-07 | 江苏通光海洋光电科技有限公司 | A kind of water test unit for cable core of seabed optical cable test |
| CN207540720U (en) * | 2017-11-23 | 2018-06-26 | 广州文冲船厂有限责任公司 | A kind of tightness test device of watertight cable stuffing-box |
-
2017
- 2017-11-23 CN CN201711184346.1A patent/CN107806965B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203365090U (en) * | 2013-07-02 | 2013-12-25 | 中国船舶重工集团公司第七二二研究所 | Hydraulic pressure detection device |
| WO2015143569A1 (en) * | 2014-03-28 | 2015-10-01 | Intelliview Technologies Inc. | Leak detection |
| CN105067199A (en) * | 2015-08-13 | 2015-11-18 | 南京高精船用设备有限公司 | Split type NBG airtight bulkhead stuffing box test device and application thereof |
| CN106198234A (en) * | 2016-08-24 | 2016-12-07 | 江苏通光海洋光电科技有限公司 | A kind of water test unit for cable core of seabed optical cable test |
| CN207540720U (en) * | 2017-11-23 | 2018-06-26 | 广州文冲船厂有限责任公司 | A kind of tightness test device of watertight cable stuffing-box |
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| CN107806965A (en) | 2018-03-16 |
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