CN113236778A

CN113236778A - Sealing device for pressure test

Info

Publication number: CN113236778A
Application number: CN202110416627.5A
Authority: CN
Inventors: 岳岁宁; 杨保; 撖俊虎
Original assignee: Kocel Intelligent Machinery Ltd
Current assignee: Kocel Intelligent Machinery Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-08-10

Abstract

The application relates to a sealing device for pressure test, including sealing mechanism, connecting portion, installation department and triangle, the sealing mechanism cover is located in the screw thread section of connecting portion, threaded hole is seted up to the first end of installation department, the screw thread section with screw hole screw-thread fit, eccentric hole has been seted up to the triangle, just the triangle passes through eccentric hole can swing set up in the second end of installation department waits to detect the device and has the mouth of pipe, the triangle can stretch into to in the mouth of pipe, rotating under the condition of connecting portion, the installation department is followed and is close to sealing mechanism's direction removes, so that the triangle with orificial medial extremity butt cooperation, just sealing mechanism shutoff in orificial outside end. This scheme can solve the difficult problem of carrying out pressure test of part under the condition of not having the locking bolt hole.

Description

Sealing device for pressure test

Technical Field

The invention relates to the technical field of test devices, in particular to a sealing device for a pressure test.

Background

Mechanical products such as diesel engine bodies, gas turbine bearing boxes, compressor housings and the like are mostly provided with pressure-bearing cavities, such as oil cavities, air inlet and outlet cavities, cooling cavities and the like. The cavities can bear the pressure of liquid or gas in the using process, and generally, the pressure-bearing cavities need to be subjected to pressure test in the production and manufacturing stage so as to check the strength and the tightness of the pressure-bearing cavities of the parts.

Need seal open mouth of pipe, through-hole before carrying out pressure test to the pressure-bearing chamber way, sealing device mostly takes the plane or the cylinder flange closure plate of O shape circle, cooperates the screw hole of design on the part terminal surface again to lock to reach sealed effect. However, some products need to be subjected to pressure testing in a blank state or in a state that the end face of a pipe opening is opened without a locking bolt hole, the pressure-bearing cavity sealing blocking plate is not provided with the locking bolt hole, external force is mostly used for assisting side jacking, the tool structure is complex, pressing force is insufficient, pressure relief is easily caused, and test failure is caused.

Disclosure of Invention

In view of this, it is necessary to provide a sealing device for a pressure test, which is a problem that it is difficult to perform the pressure test without locking the bolt hole.

In order to solve the problems, the invention adopts the following technical scheme:

the embodiment of the invention discloses a sealing device for a pressure test, which comprises a sealing mechanism, a connecting part, an installation part and a triangular piece, wherein the sealing mechanism is sleeved on a threaded section of the connecting part, a threaded hole is formed in a first end of the installation part, the threaded section is in threaded fit with the threaded hole, an eccentric hole is formed in the triangular piece, the triangular piece is arranged at a second end of the installation part in a swinging mode through the eccentric hole, a device to be detected is provided with a pipe orifice, the triangular piece can extend into the pipe orifice, the installation part moves in the direction close to the sealing mechanism under the condition that the connecting part is rotated, so that the triangular piece is in butt fit with the inner side end of the pipe orifice, and the sealing mechanism is blocked at the outer side end of the pipe orifice.

In one embodiment, the second end of the mounting portion is provided with a swing groove, part of the triangular piece is located in the swing groove, and the triangular piece can swing along the extending direction of the swing groove.

In one embodiment, the mounting structure further comprises a connecting pin, a through hole penetrating through the swing groove is formed in the second end of the mounting portion, two ends of the connecting pin are respectively arranged in the through hole, and the triangular piece is arranged on the connecting pin in a swinging mode through the eccentric hole.

In one embodiment, the sealing mechanism includes a thickened gasket and a first sealing gasket, the thickened gasket and the first sealing gasket are sequentially sleeved on the threaded section, and the first sealing gasket is sealed between the thickened gasket and the pipe orifice when the sealing device is installed on the device to be detected.

In one embodiment, the sealing mechanism further includes a second sealing gasket, the second sealing gasket is sleeved on the threaded section, and the second sealing gasket is sealed between the thickened gasket and the connector of the connecting portion when the sealing device is installed on the device to be detected.

In one embodiment, the first seal gasket and the second seal gasket are both rubber gaskets.

In one embodiment, the triangular pieces are made of metal.

In one embodiment, the mounting portion is cylindrical in shape and has a diameter less than the diameter of the spout.

In one embodiment, the connector of the connecting portion is a hexagon nut.

In one embodiment, the number of the connecting parts is multiple, and the lengths of the connecting parts are different.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the sealing device for the pressure test disclosed by the embodiment of the invention, the sealing mechanism is matched with the triangular piece to seal the opening on the device to be detected, so that the pressure test of the pressure-bearing cavity of the device to be detected is realized. Compared with the existing sealing mode, the sealing device disclosed by the embodiment of the invention does not need to be provided with a locking threaded hole on the device to be detected and does not need to use external force to assist side jacking, so that the problem that the sealing of the device to be detected is difficult to realize in a blank state or in the case of no locking threaded hole is effectively solved. Moreover, the sealing device disclosed by the invention is simple in structure, convenient to use and high in assembly efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a sealing device according to an embodiment of the present invention when the sealing device is installed in a device to be tested;

FIG. 2 is a schematic view of the structure of FIG. 1 in another state;

FIG. 3 is a schematic structural diagram of a sealing device according to an embodiment of the present invention;

fig. 4 is an exploded view of fig. 3.

Description of reference numerals:

100-sealing mechanism, 110-thickening gasket, 120-first sealing gasket, 130-second sealing gasket;

200-a connecting part;

300-mounting part, 310-threaded hole, 320-swinging groove and 330-through hole;

400-triangle, 410-eccentric hole;

500-device to be tested, 510-nozzle;

600-connecting pin.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, the embodiment of the present invention discloses a sealing device for a pressure test, which includes a sealing mechanism 100, a connecting portion 200, a mounting portion 300, and a triangle 400.

In the installation process, the sealing mechanism 100 is sleeved on the threaded section of the connecting portion 200, that is, the sealing mechanism 100 is provided with a central hole, the threaded section of the connecting portion 200 can pass through the central hole, so that the sealing mechanism 100 is sleeved on the threaded section, the first end of the installation portion 300 is provided with a threaded hole 310, the threaded section is in threaded fit with the threaded hole 310, the triangular piece 400 is provided with an eccentric hole 410, and the triangular piece 400 is swingably arranged at the second end of the installation portion 300 through the eccentric hole 410.

Specifically, the triangular piece 400 may be first mounted to the second end of the mounting portion 300, then the threaded section of the connecting portion 200 is threaded through the central hole of the sealing mechanism 100, and finally is threaded with the threaded hole 310 on the mounting portion 300, so as to achieve the assembly of the sealing device.

In a specific pressure test process, the device 500 to be detected is provided with a pipe orifice 510, the triangular piece 400 can extend into the pipe orifice 510, in this case, at least part of the mounting part 300 is positioned in the pipe orifice 510 to ensure that the triangular piece 400 can extend into the pipe orifice 510, in the case of rotating the connecting part 200, because the thread section of the connecting part 200 is in threaded connection with the sealing mechanism 100, the connecting part 200 drives the mounting part 300 to move, the mounting part 300 moves along the direction close to the sealing mechanism 100, so that the triangular piece 400 moves along the direction close to the sealing mechanism 100 to enable the triangular piece 400 to be in butt fit with the inner side end of the pipe orifice 510, in this case, the triangular piece 400 does not move any more, the connector of the connecting part 200 abuts against the sealing mechanism 100, and finally the sealing mechanism 100 is plugged at the outer side end of the pipe orifice 510.

After the pressure test, can drive connecting portion 200 and rotate along the opposite direction to not hard up connecting portion 200 and sealing mechanism 100 and installation department 300, then rock connecting portion 200, because triangle 400 eccentric settings, this kind of mode will make triangle 400 no longer with the cooperation of the inboard end butt of mouth of pipe 510, rotate connecting portion 200 once more and will realize sealing device's dismantlement. It should be noted that the lateral area of mounting portion 300 needs to be smaller than the inner diameter of nozzle 510, that is, when mounting portion 300 is located in nozzle 510, there is a gap between mounting portion 300 and nozzle 510, so as to facilitate shaking connecting portion 200.

As can be seen from the above working process, in the sealing device for pressure test disclosed in the embodiment of the present invention, the sealing mechanism 100 is matched with the triangular member 400 to seal the pipe opening 510 opened on the device 500 to be detected, so as to realize the pressure test of the pressure-bearing channel of the device 500 to be detected. Compared with the existing sealing mode, the sealing device disclosed by the embodiment of the invention does not need to be provided with a locking threaded hole on the device 500 to be detected and does not need to use external force to assist side jacking, so that the problem that the sealing of the device 500 to be detected is difficult to realize in a blank state or in the case of no locking threaded hole is effectively solved. Moreover, the sealing device disclosed by the invention is simple in structure, convenient to use and high in assembly efficiency.

In an embodiment of the present invention, the second end of the mounting portion 300 may be provided with a swing groove 320, please refer to fig. 4, the swing groove 320 may provide a mounting position for the triangle 400, specifically, a portion of the triangle 400 may be located in the swing groove 320, that is, the eccentric hole 410 of the triangle 400 may be sleeved by clamping or bolting, so that the triangle 400 is disposed in the swing groove 320, and the triangle 400 may swing along the extending direction of the swing groove 320. In this case, the swing groove 320 can play a guiding role so that the swing effect of the triangle 400 is better, and in this way, the triangle 400 and the mounting part 300 occupy less space so that the structure of the whole sealing device is more compact.

In an alternative scheme, the sealing device disclosed in the embodiment of the present invention may further include a connecting pin 600, the second end of the mounting portion 300 may be provided with a through hole 330 penetrating the swing groove 320, two ends of the connecting pin 600 are respectively disposed in the through holes 330, and the triangle 400 may be swingably disposed on the connecting pin 600 through the eccentric hole 410. When mounting, the connecting pin 600 may sequentially pass through one of the through holes 330, the eccentric hole 410, and the other through hole 330, and then both ends of the connecting pin 600 are fixed in the through holes 330, so that the triangle 400 may swing around the connecting pin 600. The mode has the advantages of simple structure, convenient use and capability of improving the use efficiency.

In the embodiment of the disclosure, the sealing mechanism 100 may include a thickened gasket 110 and a first sealing gasket 120, the thickened gasket 110 and the first sealing gasket 120 may be sequentially sleeved on the threaded section of the connecting portion 200, and the first sealing gasket 120 is sealed between the thickened gasket 110 and the pipe orifice 510 when the sealing device is installed in the device 500 to be detected. Under this kind of circumstances, thickening gasket 110 can play the effect of lifting strength to prevent to break in sealed in-process sealing mechanism 100 and influence sealed effect, simultaneously, first sealed pad 120 can play better sealed effect, and optionally, first sealed pad 120 can be the cushion of flexibility, and it is better to guarantee with thickening gasket 110 and the contact effect of mouth of pipe 510, and then plays better sealed effect.

Further, the sealing mechanism 100 may further include a second sealing gasket 130, the second sealing gasket 130 may be sleeved on the threaded section of the connecting portion 200, and when the sealing device is installed on the device 500 to be detected, the second sealing gasket 130 is sealed between the thickened gasket 110 and the connector of the connecting portion 200. Under this kind of circumstances, the second is sealed to be filled up can seal up between the connector of thickening gasket 110 and connecting portion 200 to produce gas leakage phenomenon between the connector of preventing thickening gasket 110 and connecting portion 200, thereby can play better sealed effect, and then can promote the pressure test effect of treating detection device 500. Optionally, the second sealing gasket 130 may also be a flexible gasket, so as to ensure that the contact effect with the connector of the thickened gasket 110 and the connecting portion 200 is better, and further play a better sealing effect.

In an alternative, the first and

second gaskets

120, 130 may each be a rubber gasket. The rubber pad has good compressibility, wear resistance and elongation force, thereby having better sealing effect. Of course, the first sealing pad 120 and the second sealing pad 130 may also be gaskets made of other materials, which is not limited in this embodiment of the present invention.

In the embodiment of the present invention, the triangular member 400 may be made of a metal material, in which case, the triangular member 400 has a large mass, so that when the triangular member 400 extends into the tube opening 510, the triangular member 400 is inclined due to gravity and eccentric arrangement of the triangular member 400, so that the triangular member 400 can easily extend into the tube opening 510; likewise, during the process of extending the triangle 400 out of the spout 510, the triangle 400 will be disposed obliquely due to gravity and the eccentric arrangement of the triangle 400, so that the triangle 400 can be extended out of the spout 510 more easily. Specifically, the triangle 400 may be made of metal such as iron, which is not limited in the embodiment of the present invention.

In an alternative embodiment, the mounting portion 300 may be cylindrical in shape, and the mounting portion 300 has a diameter smaller than the diameter of the spout 510. In this case, in the process of shaking the mounting part 300, the mounting part 300 with such a shape can make the triangle 400 more easily abut against and engage with the inner end of the pipe opening 510 and more easily separate from the inner end of the pipe opening 510, thereby facilitating the pressure test.

In the embodiment of the disclosure, the connector of the connecting portion 200 may be a hexagon nut, and a worker may screw the connecting portion 200 with a wrench, so as to better plug the nozzle 510 of the device 500 to be detected.

In an alternative embodiment, the number of the connection portions 200 may be plural, and the lengths of the plural connection portions 200 are different. Each connecting portion 200 is matched with the sealing mechanism 100, the mounting portion 300 and the triangular piece 400, and in this case, a worker can select the connecting portion 200 with a proper length according to the depth of the pipe orifice 510, so that the different pipe orifices 510 can be plugged conveniently.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The sealing device for the pressure test is characterized by comprising a sealing mechanism (100), a connecting part (200), a mounting part (300) and a triangular piece (400), wherein the sealing mechanism (100) is sleeved on a threaded section of the connecting part (200), a threaded hole (310) is formed in a first end of the mounting part (300), the threaded section is in threaded fit with the threaded hole (310), an eccentric hole (410) is formed in the triangular piece (400), the triangular piece (400) is arranged at a second end of the mounting part (300) in a swinging mode through the eccentric hole (410), a device (500) to be detected is provided with a pipe orifice (510), the triangular piece (400) can extend into the pipe orifice (510), the mounting part (300) moves in the direction close to the sealing mechanism (100) under the condition that the connecting part (200) is rotated, so that the triangular piece (400) is in fit with and abutted to the inner side end of the pipe orifice (510), and the sealing mechanism (100) is blocked at the outer side end of the nozzle (510).

2. The sealing device according to claim 1, wherein the second end of the mounting portion (300) is provided with a swing groove (320), part of the triangular piece (400) is positioned in the swing groove (320), and the triangular piece (400) can swing along the extending direction of the swing groove (320).

3. The sealing device according to claim 2, further comprising a connecting pin (600), wherein a through hole (330) penetrating through the swing groove (320) is formed at the second end of the mounting portion (300), two ends of the connecting pin (600) are respectively disposed at the through holes (330), and the triangle (400) is swingably disposed on the connecting pin (600) through the eccentric hole (410).

4. The sealing device according to claim 1, wherein the sealing mechanism (100) comprises a thickened gasket (110) and a first sealing gasket (120), the thickened gasket (110) and the first sealing gasket (120) are sequentially sleeved on the threaded section, and the first sealing gasket (120) is sealed between the thickened gasket (110) and the pipe orifice (510) when the sealing device is mounted on the device (500) to be detected.

5. The sealing arrangement according to claim 4, wherein the sealing mechanism (100) further comprises a second sealing gasket (130), the second sealing gasket (130) is sleeved on the threaded section, and the second sealing gasket (130) is sealed between the thickened gasket (110) and the connector of the connecting portion (200) when the sealing arrangement is mounted on the device (500) to be tested.

6. The sealing arrangement according to claim 5, characterized in that the first sealing gasket (120) and the second sealing gasket (130) are both rubber gaskets.

7. Sealing device according to claim 1, characterized in that the triangle (400) is made of metal.

8. The sealing arrangement according to claim 1, characterized in that the mounting portion (300) is cylindrical in shape and the mounting portion (300) has a diameter smaller than the diameter of the spout (510).

9. A sealing arrangement according to claim 1, wherein the coupling head of the coupling part (200) is a hexagonal nut.

10. The sealing device according to claim 1, wherein the number of the connecting portions (200) is plural, and the lengths of the plural connecting portions (200) are different from each other.