阅读说明：本技术 一种船舶电缆填料函密性检测装置及检测方法 (Device and method for detecting tightness of ship cable stuffing box ) 是由 倪春杰 孟林 宋国寅 霍锐珠 于 2021-06-30 设计创作，主要内容包括：本发明公开了一种船舶电缆填料函密性检测装置及检测方法,所述装置包括密封装置、通过导气管与密封装置相连的抽气装置、以及安装在密封装置上的负压表,密封装置包括上端盖、下端盖和侧面盖板,所述侧面盖板分别固定在上端盖和下端盖的两侧,所述上端盖的一端与下端盖铰接固定、另一端可通过锁紧装置与下端盖对合固定以在两者之间形成一个可容纳电缆填料函的密封腔室。本发明可以快速检测出电缆填料函的密封性,大大提高了电缆填料函的检测效率。(The invention discloses a device and a method for detecting tightness of a ship cable stuffing box, wherein the device comprises a sealing device, an air extractor connected with the sealing device through an air duct, and a negative pressure gauge arranged on the sealing device, the sealing device comprises an upper end cover, a lower end cover and side cover plates, the side cover plates are respectively fixed on two sides of the upper end cover and the lower end cover, one end of the upper end cover is hinged and fixed with the lower end cover, and the other end of the upper end cover can be fixed with the lower end cover in an involution way through a locking device so as to form a sealing cavity capable of accommodating the cable stuffing box between the upper end cover and the lower end cover. The invention can quickly detect the sealing performance of the cable stuffing box and greatly improve the detection efficiency of the cable stuffing box.)

1. A device for detecting the tightness of a ship cable stuffing box is characterized by comprising a sealing device, an air extractor connected with the sealing device through an air duct, and a negative pressure meter arranged on the sealing device,

the sealing device comprises an upper end cover, a lower end cover and a side cover plate, wherein the side cover plate is respectively fixed on two sides of the upper end cover and the lower end cover, one end of the upper end cover is hinged and fixed with the lower end cover, and the other end of the upper end cover can be fixed with the lower end cover in an involutory mode through a locking device so as to form a sealing cavity capable of containing a cable stuffing box between the upper end cover and the lower end cover.

2. The device for detecting the stuffing box tightness of a ship cable according to claim 1, wherein the upper cover comprises a left cover body, a middle cover body and a right cover body which are respectively fixed with the lower cover through a hinge element, a first connecting port for connecting the air duct is arranged at the top of the left cover body, a second connecting port for connecting the negative pressure gauge is arranged at the top of the right cover body, locking upper blocks are fixed on the left cover body, the middle cover body and the right cover body, a locking lower block is fixed on the lower cover, and the locking upper blocks and the locking lower blocks are fixed through locking screws to form the locking device.

3. The device for detecting stuffing box tightness of ships according to claim 2, wherein said locking upper block is provided with a circular through hole for passing a locking screw therethrough, and the locking lower block is provided with a threaded hole.

4. The device for detecting the stuffing tightness of the marine cable according to claim 2, wherein the middle cover body of the upper end cover is an arc-shaped plate structure which is bent upwards and provided with extending protrusions at two sides of the top, a first sealing groove is arranged at the joint of the extending protrusions and the arc-shaped plate structure, and a first sealing rubber strip is arranged in the first sealing groove.

5. The device for detecting the stuffing box tightness of the ship cable according to claim 2, wherein the left cover body and the right cover body of the upper end cover have the same structure as the lower end cover and are both arc-shaped plates bent upwards, the side edges of the arc-shaped plates are provided with cover plate grooves for fixing the side cover plates, and the involution parts of the arc-shaped plates are provided with second sealing grooves;

and a second sealing rubber strip is arranged in a second sealing groove of the lower end cover.

6. The apparatus for detecting stuffing tightness of ships according to claim 1 or 5, wherein said side cover is composed of a side plate part, and an annular convex part extending from an inner edge of the side plate part, said annular convex part being perpendicular to the side plate part.

7. The apparatus for detecting stuffing box tightness of marine cables according to claim 1 or 5, wherein said air-extracting means is a vacuum pump or an air-extracting cylinder.

8. The apparatus for detecting stuffing tightness of marine cables according to claim 1, wherein said sealing means is made of transparent acrylic material.

9. The tightness detection method of the tightness detection device of the ship cable stuffing letter according to any one of claims 1 to 8, characterized by comprising the following steps:

s1, placing the cable stuffing box in a sealing cavity of the sealing device, and enabling two end parts of the cable stuffing box to be clamped on the annular bulges of the side cover plate;

s2, the left cover body and the right cover body of the upper end cover are turned downwards to be matched with the lower end cover, and the left cover body, the right cover body and the lower end cover are fixed into a whole through a locking device;

s3, uniformly spraying a layer of soapy water on the contact part of the cable and the cable stuffing box;

s4, turning the middle cover body of the upper end cover downwards to be matched with the lower end cover, and fixing the middle cover body and the lower end cover into a whole through a locking device;

and S5, starting a vacuum pump, observing the reading of the negative pressure gauge and observing whether bubbles are generated at the position coated with the soap water or not so as to verify the air tightness of the cable stuffing box.

10. The method for detecting the confidentiality of a device for detecting the stuffing letter of a ship's cable according to claim 9, further comprising the steps of: if the part coated with the soap water is dry in the test process, the vacuum pump can be closed at any time, the middle cover body of the upper end cover is opened, and the contact part of the cable and the cable stuffing box is sprayed with the soap water again for performing the tightness test.

Technical Field

The invention relates to the technical field of ship construction, in particular to a device and a method for detecting the stuffing box tightness of a ship cable.

Background

In the process of ship construction, a large number of devices are installed in the open air and are corroded by sea waves for a long time, so that when cables enter the devices, the cables need to be filled with stuffing boxes to ensure that water vapor does not enter the devices, and the water vapor is prevented from damaging electrical equipment. However, no effective detection means is used for detecting the tightness of the stuffing box after the construction is finished, so that the outdoor open-air equipment is damaged due to water inflow although the stuffing box is installed when each equipment enters a cable.

Disclosure of Invention

In view of the above, the present invention provides a device and a method for detecting the stuffing sealing performance of a ship cable, so as to solve the problems in the background art.

A device for detecting the tightness of a ship cable stuffing box comprises a sealing device, an air extractor connected with the sealing device through an air duct, and a negative pressure meter arranged on the sealing device,

the sealing device comprises an upper end cover, a lower end cover and a side cover plate, wherein the side cover plate is respectively fixed on two sides of the upper end cover and the lower end cover, one end of the upper end cover is hinged and fixed with the lower end cover, and the other end of the upper end cover can be fixed with the lower end cover in an involutory mode through a locking device so as to form a sealing cavity capable of containing a cable stuffing box between the upper end cover and the lower end cover.

Preferably, the upper end cover includes a left cover body, a middle cover body and a right cover body which are respectively fixed with the lower end cover through hinge parts, the top of the left cover body is provided with a first connecting port for connecting an air duct, the top of the right cover body is provided with a second connecting port for connecting a negative pressure meter, locking upper blocks are fixed on the left cover body, the middle cover body and the right cover body, locking lower blocks are fixed on the lower end cover, and the locking upper blocks and the locking lower blocks are fixed through locking screws to form a locking device.

Preferably, the locking upper block is provided with a circular through hole for a locking screw to pass through, and the locking lower block is provided with a threaded hole.

Preferably, the middle cover body of the upper end cover is an arc-shaped plate structure with extending bulges arranged on two sides of the top of the middle cover body, a first sealing groove is formed in the joint of the extending bulges and the arc-shaped plate structure, and a first sealing rubber strip is arranged in the first sealing groove.

Preferably, the left cover body and the right cover body of the upper end cover are of the same structure as the lower end cover and are both arc-shaped plates bent upwards, the side edges of the arc-shaped plates are provided with cover plate grooves used for fixing the side cover plates, and the involution parts of the arc-shaped plates are provided with second sealing grooves;

and a second sealing rubber strip is arranged in a second sealing groove of the lower end cover.

Preferably, the side cover plate is composed of a side plate portion, and an annular projecting portion extending from an inner edge of the side plate portion, the annular projecting portion being perpendicular to the side plate portion.

Preferably, the air pumping device is a vacuum pump or an air pumping cylinder.

Preferably, the sealing device is made of a transparent acrylic material.

A tightness detection method of a ship cable stuffing box tightness detection device specifically comprises the following steps:

s1, placing the cable stuffing box in a sealing cavity of the sealing device, and enabling two end parts of the cable stuffing box to be clamped on the annular bulges of the side cover plate;

s2, the left cover body and the right cover body of the upper end cover are turned downwards to be matched with the lower end cover, and the left cover body, the right cover body and the lower end cover are fixed into a whole through a locking device;

s3, uniformly spraying a layer of soapy water on the contact part of the cable and the cable stuffing box;

s4, turning the middle cover body of the upper end cover downwards to be matched with the lower end cover, and fixing the middle cover body and the lower end cover into a whole through a locking device;

and S5, starting a vacuum pump, observing the reading of the negative pressure gauge and observing whether bubbles are generated at the position coated with the soap water or not so as to verify the air tightness of the cable stuffing box.

Preferably, the method further comprises the steps of: if the part coated with the soap water is dry in the test process, the vacuum pump can be closed at any time, the middle cover body of the upper end cover is opened, and the contact part of the cable and the cable stuffing box is sprayed with the soap water again for performing the tightness test.

The invention has the beneficial effects that:

the cable stuffing box sealing device is simple in structure and very convenient to disassemble, assemble and use, the sealing device can be quickly fixed in a sealing performance detection area, the sealing performance of the cable stuffing box can be quickly detected, and the detection efficiency of the cable stuffing box is greatly improved. Meanwhile, the upper end cover consists of three parts, so that when abnormal conditions occur in the detection process, the cover body part can be opened to quickly supplement soapy water or perform other remedial measures, the construction man-hour can be greatly saved, and the detection efficiency is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of an opened state of the sealing device.

Fig. 2 is a schematic view of the closed state of the sealing device.

Fig. 3 is a schematic view of the installation of a cable gland in a sealing device.

Fig. 4 is a schematic structural view of the side cover plate.

The reference numerals in the figures have the meaning:

1-lower end cover, 2-side cover plate, 3-hinged piece, 4-sealing device, 5-cable stuffing box, 6-upper end cover, 7-right cover body, 8-middle cover body, 9-left cover body, 10-locking screw, 11-locking upper block, 14-locking lower block, 15-sealing cavity, 16-first connecting port, 17-second connecting port, 18-cover plate groove, 19-second sealing groove, 20-second sealing rubber strip, 21-extending bulge, 22-first sealing groove, 23-first sealing rubber strip, 24-side plate part and 25-annular bulge part.

Detailed Description

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected" and "fixed" are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The invention provides a device for detecting the tightness of a ship cable stuffing box, which comprises a sealing device 4, an air extractor connected with the sealing device through an air duct, and a negative pressure meter arranged on the sealing device. In this embodiment, the sealing device 4 is made of a transparent acrylic material, and the air-extracting device can be a vacuum pump or an air-extracting cylinder.

The sealing device 4 comprises an upper end cover 6, a lower end cover 1 and a side cover plate 2, wherein the side cover plate 2 is respectively fixed on two sides of the upper end cover 6 and the lower end cover 1, one end of the upper end cover 6 is hinged and fixed with the lower end cover 1, and the other end of the upper end cover 6 can be fixed with the lower end cover 1 in an involution manner through a locking device so as to form a sealing cavity 15 capable of accommodating a cable stuffing box between the upper end cover and the lower end cover.

Specifically, the upper end cover 6 comprises a left cover body 9, a middle cover body 8 and a right cover body 7 which are respectively fixed with the lower end cover 1 through a hinge piece 3.

The top of the left cover body 9 is provided with a first connecting port 16 for connecting an air duct, and the top of the right cover body 7 is provided with a second connecting port 17 for connecting a negative pressure meter.

The left cover body 9, the middle cover body 8 and the right cover body 7 are all fixed with an upper locking block 11, the lower end cover 1 is fixed with a lower locking block 14, and the upper locking block 11 and the lower locking block 14 are fixed through a locking screw 10 to form a locking device. The locking upper block 11 is provided with a circular through hole for the locking screw 10 to pass through, and the locking lower block 14 is provided with a threaded hole.

The structure of the left cover body 9 and the right cover body 7 of the upper end cover 6 is the same as that of the lower end cover 1, and the left cover body and the right cover body are both arc-shaped plates which are bent upwards, the side edges of the arc-shaped plates are provided with cover plate grooves 18 for fixing side cover plates, and the involution parts of the arc-shaped plates are provided with second seal grooves 19. A second sealing rubber strip 20 is installed in a second sealing groove of the lower end cover 1, and when the upper end cover 6 is opposite to the lower end cover 1, the second sealing rubber strip 20 in the second sealing groove of the lower end cover 1 can be just clamped in the second sealing grooves of the left cover body 9 and the right cover body 7.

The middle cover body 8 of the upper end cover 6 is of an arc-shaped plate structure, the two sides of the top of the middle cover body are provided with extending protrusions 21, the connecting positions of the extending protrusions 21 and the arc-shaped plate structure are provided with first sealing grooves 22, and first sealing rubber strips 23 are installed in the first sealing grooves 22.

The side cover 2 is composed of a side plate portion 24, and an annular projecting portion 25 extending from an inner edge of the side plate portion 24, the annular projecting portion 25 being perpendicular to the side plate portion 24. The top of the side cover plate 2 is also provided with a sealing groove for installing a sealing rubber strip.

The invention discloses a tightness detection method of a tightness detection device of a ship cable stuffing box, which specifically comprises the following steps:

s1, the cable gland 5 is placed in the sealing chamber 15 of the sealing device 4 so that both ends of the cable gland 5 are caught on the annular convex portions 25 of the side cover plates.

The dimensions of the side cover plates 2 of the sealing device 4 are adapted to the dimensions of the cable gland 5, so that, prior to the installation of the cable gland 5, correspondingly dimensioned side cover plates 2 are now installed on the upper and lower end caps.

And S2, the left cover body 9 and the right cover body 7 of the upper end cover 6 are turned downwards to be matched with the lower end cover 1, and the left cover body 9, the right cover body 7 and the lower end cover 1 are fixed into a whole through a locking device.

S3, uniformly spraying a layer of soapy water on the contact part of the cable and the cable stuffing box 5.

And S4, turning the middle cover body 8 of the upper end cover 6 downwards to be matched with the lower end cover 1, and fixing the middle cover body 8 and the lower end cover 1 into a whole through a locking device.

And S5, starting a vacuum pump, observing the reading of the negative pressure gauge and observing whether bubbles are generated at the position coated with the soap water or not so as to verify the air tightness of the cable stuffing box.

Preferably, the method further comprises the steps of: if the part coated with the soap water is dry in the test process, the vacuum pump can be closed at any time, the middle cover body of the upper end cover is opened, and the contact part of the cable and the cable stuffing box is sprayed with the soap water again for performing the tightness test.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.