A flange quick-sealing device and a multi-station pressure testing tooling using the same

Abstract

The present invention discloses a flange quick-sealing device and a multi-station pressure test tooling using the same, belonging to the technical field of pressure test tooling. A flange quick-sealing device of the present invention includes a cylinder body with an open top and a blind plate located inside the cylinder body; one side of the blind plate is a blind plate sealing surface for sealing the flange, and a notch for placing a pipe body is provided on the side wall of the cylinder body facing the blind plate sealing surface, and the inner side surface of the side wall of the cylinder body is parallel to the blind plate sealing surface and has a gap for clamping the flange; the other side of the blind plate is the back surface of the blind plate, and a driving mechanism is connected to the back surface of the blind plate, so that under the drive of the driving mechanism, the blind plate moves closer to / away from the notch. By using the flange quick-sealing device of the present invention, the labor intensity of workers is low and the efficiency is higher; the sealing force of the blind plate on the flange is more constant and uniform.

Description

Technical Field

[0001] The present invention relates to a flange quick-sealing device and a multi-station pressure test tooling using the same, belonging to the technical field of pressure test tooling. Background Art

[0002] The blowout preventer line is a safety component in oil and gas fields used in conjunction with blowout preventers, and is a double-flange pipeline. As Figure 1 shown, its basic structure is: including a pipe body 81, and flanges 82 are provided at both ends of the pipe body 81.

[0003] In the actual application process, the blowout preventer lines (hereinafter collectively referred to as double-flange pipelines) need to be regularly returned to the factory and handed over to a third party for pressure test detection, and the quantity is quite large.

[0004] The usual pressure test plan is: the flanges 82 at both ends of each double-flange pipeline are sealed with flange covers 9 (or called blind flange flanges); that is, bolts are manually tightened to make the flange covers 9 and the flanges 82 be hermetically connected, and then each double-flange pipeline is separately tested. It has obvious deficiencies:

[0005] (1) For the connection method of manually tightening bolts to connect the flange cover and the flange, the labor intensity of workers is relatively large and the efficiency is low.

[0006] (2) For the connection method of manually tightening bolts to connect the flange cover and the flange, it is difficult to ensure the constant and uniform fastening of the bolts. Summary of the Invention

[0007] The invention purpose of the present invention is: aiming at the above problems, to provide a flange quick-sealing device. The present invention does not adopt the connection method of bolt fastening to seal the flange. When the present invention is used, the labor intensity of workers is low and the efficiency is higher.

[0008] The technical solution adopted by the present invention is as follows:

[0009] A flange quick-sealing device includes a cylinder body with an open top and a blind plate located inside the cylinder body; one side of the blind plate is a blind plate sealing surface for sealing the flange, a notch for placing the pipe body is opened on the side wall of the cylinder body facing the blind plate sealing surface, and the inner side surface of this side wall of the cylinder body is parallel to the blind plate sealing surface and has a gap for clamping the flange; the other side of the blind plate is the blind plate back surface, and a driving mechanism is connected to the blind plate back surface, so that under the drive of the driving mechanism, the blind plate moves closer to / away from the notch.

[0010] When using the present invention to seal the flange of a double - flange pipeline (the double - flange pipeline includes a pipe body with flanges provided at both ends of the pipe body), the flange is clamped between the side wall of the cylinder body with a notch and the blind plate, and the pipe body is placed on the notch. At this time, through the driving mechanism, the blind plate moves closer to the notch, so that the sealing surface of the blind plate gradually approaches the flange, realizing the sealing of the flange by the blind plate. At this time, the flange is clamped between the blind plate and the side wall of the cylinder body with a notch. Compared with the connection method of manually tightening bolts to connect the flange cover and the flange, when using the present invention, since there is no bolt - fastening connection method, the labor intensity of workers is low and the efficiency is higher; the sealing force of the blind plate on the flange is more constant and uniform.

[0011] Optionally, a positioning tile body is provided between the inner bottom surface of the cylinder body and the outer peripheral surface of the blind plate. The inner surface of the positioning tile body matches the outer peripheral surface of the blind plate, and the positioning tile body extends below the notch. It is convenient for the blind plate to align with the matching flange. At this time, the outer diameters of the flange and the blind plate are the same.

[0012] Further, the positioning tile body is detachably placed on the inner bottom surface of the cylinder body. It is convenient to replace the positioning tile body.

[0013] Optionally, the back surface of the blind plate is detachably connected to the driving mechanism. It is convenient to replace the blind plate.

[0014] When the design of the positioning tile body being detachably placed on the inner bottom surface of the cylinder body and the design of the back surface of the blind plate being detachably connected to the driving mechanism are combined, the required blind plate and positioning tile body can be replaced as needed to adapt to flanges of various outer diameters.

[0015] Optionally, the driving mechanism is a hydraulic driving mechanism.

[0016] Further, the hydraulic driving mechanism includes a hydraulic cylinder and a hydraulic motor. The hydraulic cylinder includes a box body fixed to the outside of the cylinder body and a piston located inside the box body. The piston divides the inner cavity of the box body into two mutually isolated chambers, and each of the two chambers is provided with a hydraulic medium channel. The two hydraulic medium channels are respectively connected to the hydraulic motor through hydraulic medium pipelines. The piston is connected with a piston rod that passes through the box body, and the piston rod is connected to the back surface of the blind plate. As a specific design option of the hydraulic driving mechanism, it can realize the movement of the blind plate closer to / away from the notch. Preferably, the piston rod is detachably connected to the back surface of the blind plate, such as by using a threaded connection method.

[0017] A multi-station pressure test tooling, including a frame body, on which a plurality of pairs of the above-mentioned flange quick sealing devices are assembled; in each pair of flange quick sealing devices, the blind plate sealing surfaces of the two blind plates face each other, and at least one blind plate is provided with a pressure test medium channel, which starts from the top of the blind plate and ends at the middle of the blind plate sealing surface; it also includes a manifold with a pressure test medium inlet, and each pressure test medium channel is connected to the manifold through a pressure test medium pipeline.

[0018] When using the multi-station pressure test tooling of the present invention, each pair of flange quick sealing devices forms a pressure test station, and 1 double-flange pipeline can be installed on each pressure test station, so that multiple double-flange pipelines can be simultaneously pressure-tested on the frame body. Specifically, the double-flange pipeline is installed on the corresponding pair of flange quick sealing devices, and the flange quick sealing device is used to quickly seal the flanges at both ends of the double-flange pipeline. During the pressure test operation, by injecting a pressure test medium (such as water or air) from the pressure test medium inlet, after the pressure test medium enters the manifold, it is shunted through the pressure test medium pipeline and the pressure test medium channel into the corresponding double-flange pipeline, achieving the purpose of simultaneously pressure-testing multiple double-flange pipelines, and the pressure test operation efficiency is high. Preferably, each pair of flange quick sealing devices is distributed in parallel; in each pair of flange quick sealing devices, only one blind plate of the flange quick sealing device is provided with a pressure test medium channel; the flange quick sealing device provided with the pressure test medium channel is located on the same side of the frame body, and the manifold is assembled on the frame body close to the pressure test medium channel.

[0019] Optionally, a stop valve is connected between the pressure test medium pipeline and the pressure test medium channel, and / or a stop valve is connected between the pressure test medium pipeline and the manifold. Since each pair of flange quick sealing devices forms a pressure test station, when the number of double-flange pipelines to be pressure-tested is less than the number of pressure test stations, for the pressure test stations without double-flange pipelines installed, close their stop valves; for the pressure test stations with double-flange pipelines installed, open their stop valves to enable normal pressure test operation of the double-flange pipelines.

[0020] Optionally, in each pair of flange quick sealing devices, the distance between the two flange quick sealing devices is adjustable. It can adapt to double-flange pipelines of various lengths, improving the versatility of the present invention and making it more practical.

[0021] Optionally, there are 2 frame bodies, namely the first frame body and the second frame body, and the second frame body can slide into / out of the first frame body.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] A flange quick sealing device of the present invention does not adopt a bolt fastening connection method to seal the flange. When using the present invention to seal the flange, the labor intensity of workers is low and the efficiency is higher; the sealing force of the blind plate on the flange is more constant and uniform. A multi-station pressure test tooling of the present invention forms multiple pressure test stations by adopting multiple pairs of the flange quick sealing devices of the present invention, so that multiple double-flange pipes can simultaneously perform pressure test operations on the rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be described by way of examples with reference to the drawings, wherein:

[0025] Figure 1 is a schematic diagram of a flange cover sealing a double-flange pipe in the prior art;

[0026] Figure 2 is a schematic diagram of the flange quick sealing device;

[0027] Figure 3 is Figure 2 the sectional view taken along the line A-A in

[0028] Figure 4 is Figure 2 the schematic view in the direction B in

[0029] Figure 5 is the front view of the multi-station pressure test tooling;

[0030] Figure 6 is Figure 5 the enlarged view at C of

[0031] Figure 7 is Figure 5 the sectional view taken along the line D-D of

[0032] Figure 8 is Figure 5 the right view of

[0033] Figure 9 is Figure 8 the enlarged view at E of

[0034] Reference numerals in the drawings: 1 - blind plate, 11 - blind plate sealing surface, 12 - back surface of the blind plate, 13 - pressure test medium channel, 2 - cylinder block, 21 - notch, 22 - slide rail, 3 - hydraulic drive mechanism, 31 - box body, 32 - piston, 33 - piston rod, 34 - hydraulic medium channel, 35 - hydraulic medium pipeline, 36 - hydraulic motor, 4 - positioning tile body, 5 - rack, 51 - chute, 52 - roller, 53 - bottom plate, 6 - manifold, 61 - pressure test medium inlet, 62 - pressure test medium pipeline, 63 - stop valve, 7 - sealing ring, 81 - pipe body, 82 - flange, 9 - flange cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] All features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any way.

[0036] Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example in a series of equivalent or similar features.

[0037] Example 1

[0038] As Figures 2 to 4 shown, a flange quick-sealing device in this embodiment includes a cylinder body 2 with an open top and a blind plate 1 located inside the cylinder body 2; one side of the blind plate 1 is a blind plate sealing surface 11 for sealing the flange 82, and a notch 21 for placing the pipe body 81 is provided on the side wall of the cylinder body 2 facing the blind plate sealing surface 11. Moreover, the inner side surface of the side wall of the cylinder body 2 is parallel to the blind plate sealing surface 11 and has a gap for clamping the flange 82; the other side of the blind plate 1 is a blind plate back surface 12, and a driving mechanism is connected to the blind plate back surface 12, so that under the drive of the driving mechanism, the blind plate 1 moves closer to / away from the notch 21.

[0039] When using the present invention to seal the flange 82 of a double-flange pipeline (the double-flange pipeline includes a pipe body 81 with flanges 82 provided at both ends of the pipe body 81); the flange 82 is clamped between the side wall of the cylinder body 2 with the notch 21 and the blind plate 1, and the pipe body 81 is placed on the notch 21; at this time, through the driving mechanism, the blind plate 1 moves closer to the notch 21, so that the blind plate sealing surface 11 gradually approaches the flange 82, realizing the sealing of the flange 82 by the blind plate 1. At this time, the flange 82 is clamped between the blind plate 1 and the side wall of the cylinder body 2 with the notch 21. Compared with the connection method of manually tightening bolts to connect the flange cover 9 and the flange 82, when using the present invention, since there is no bolt fastening connection method, the labor intensity of workers is low and the efficiency is higher; the sealing force of the blind plate 1 on the flange 82 is more constant and uniform. To ensure the sealing effect, when the blind plate 1 seals the flange 82, a sealing ring 7 is provided between the blind plate 1 and the flange 82. The sealing ring 7 can be pre-assembled on the blind plate sealing surface 11, or can be pre-assembled on the sealing surface of the flange 82 (the sealing surface of the flange 82 refers to the surface of the flange 82 that cooperates with the blind plate sealing surface 11). When the blind plate 1 seals the flange 82, the sealing ring 7 is pressed between the blind plate 1 and the flange 82.

[0040] Optionally, as Figures 2 to 4As shown, a positioning tile body 4 is provided between the inner bottom surface of the cylinder block 2 and the outer peripheral surface of the blind plate 1. The inner surface of the positioning tile body 4 matches the outer peripheral surface of the blind plate 2, and the positioning tile body 4 extends below the notch 21. This facilitates the alignment of the blind plate 1 with the mating flange 82. At this time, the outer diameters of the flange 82 and the blind plate 1 are the same.

[0041] Furthermore, the positioning tile body 4 is detachably placed on the inner bottom surface of the cylinder block 2. This facilitates the replacement of the positioning tile body 4. That is, the positioning tile body 4 and the cylinder block 2 are of a split structure, and the positioning tile body 4 is directly placed on the inner bottom surface of the cylinder block 2. Preferably, the positioning tile body 4 is embedded and placed on the inner bottom surface of the cylinder block 2.

[0042] Optionally, the back surface 12 of the blind plate is detachably connected to the driving mechanism. This facilitates the replacement of the blind plate 1.

[0043] In one embodiment, the design of detachably placing the positioning tile body 4 on the inner bottom surface of the cylinder block 2 and the design of detachably connecting the back surface 12 of the blind plate to the driving mechanism are combined, enabling the replacement of the required blind plate 1 and positioning tile body 4 as needed to adapt to flanges 82 of various outer diameters.

[0044] Optionally, the driving mechanism is a hydraulic driving mechanism 3.

[0045] Furthermore, as Figure 2 shown, the hydraulic driving mechanism 3 includes a hydraulic cylinder and a hydraulic motor 36. The hydraulic cylinder includes a box body 31 fixed outside the cylinder block 2 and a piston 32 located inside the box body 31. The piston 32 divides the inner cavity of the box body 31 into two mutually isolated chambers, and each chamber is provided with a hydraulic medium channel 34. The two hydraulic medium channels 34 are respectively connected to the hydraulic motor 36 through hydraulic medium pipes 35. The piston 32 is connected to a piston rod 33 that passes through the box body 31, and the piston rod 33 is connected to the back surface 12 of the blind plate. As a specific design option for the hydraulic driving mechanism 3, it can achieve the movement of the blind plate 1 towards / away from the notch 21. Preferably, the piston rod 33 is detachably connected to the back surface 12 of the blind plate, such as by using a threaded connection.

[0046] Embodiment 2

[0047] As Figures 5 to 9 shown, a multi-station pressure test tooling of this embodiment includes a frame body 5. A plurality of pairs of flange quick-sealing devices of Embodiment 1 are assembled on the frame body 5. In each pair of flange quick-sealing devices, the blind plate sealing surfaces 11 of the two blind plates 1 face each other, and at least one blind plate 1 is provided with a pressure test medium channel 13. The pressure test medium channel 13 starts from the top of the blind plate 1 and ends at the middle of the blind plate sealing surface 11. It also includes a manifold 6 provided with a pressure test medium inlet 61. Each pressure test medium channel 13 is connected to the manifold 6 through a pressure test medium pipe 62.

[0048] When the multi-station pressure test tooling of the present invention is adopted, each pair of flange quick-sealing devices forms a pressure test station, and one double-flange pipeline can be installed on each pressure test station. Multiple double-flange pipelines can carry out pressure test operations on the frame 5 simultaneously. Specifically, the double-flange pipeline is installed on the corresponding pair of flange quick-sealing devices, and the quick sealing of the flanges 82 at both ends of the double-flange pipeline is realized through the flange quick-sealing devices. During the pressure test operation, by injecting the pressure test medium (such as water or air) from the pressure test medium inlet 61, after the pressure test medium enters the manifold 6, it is divided and flows through the pressure test medium pipeline 62 and the pressure test medium passage 13 into the corresponding double-flange pipeline, achieving the purpose of simultaneously pressure testing multiple double-flange pipelines, and the pressure test operation efficiency is high. Preferably, each pair of flange quick-sealing devices is distributed in parallel; in each pair of flange quick-sealing devices, only the blind plate 1 of one flange quick-sealing device is provided with a pressure test medium passage 13; the flange quick-sealing device provided with the pressure test medium passage 13 is located on the same side of the frame 5, and the manifold 6 close to the pressure test medium passage 13 is assembled on the frame 5. Of course, it can also be that in each pair of flange quick-sealing devices, the blind plates 1 of both flange quick-sealing devices are provided with pressure test medium passages 13.

[0049] Optionally, as Figure 5 and Figure 6 shown, a stop valve 63 is connected between the pressure test medium pipeline 62 and the pressure test medium passage 13, or / and, a stop valve 63 is connected between the pressure test medium pipeline 62 and the manifold 6. Since each pair of flange quick-sealing devices forms a pressure test station, when the number of double-flange pipelines to be pressure tested is less than the number of pressure test stations, for the pressure test stations without double-flange pipelines installed, the stop valve 63 thereof is closed; while for the pressure test stations with double-flange pipelines installed, the stop valve 63 thereof is opened, and the pressure test operation of the double-flange pipeline can be carried out normally. It can be that only a stop valve 63 is connected between the pressure test medium pipeline 62 and the pressure test medium passage 13; it can also be that only a stop valve 63 is connected between the pressure test medium pipeline 62 and the manifold 6; it can also be that a stop valve 63 is connected between the pressure test medium pipeline 62 and the pressure test medium passage 13, and at the same time, a stop valve 63 is also connected between the pressure test medium pipeline 62 and the manifold 6.

[0050] Optionally, in each pair of flange quick-sealing devices, the distance between the two flange quick-sealing devices can be adjusted. It can adapt to double-flange pipelines of various lengths, improving the versatility of the present invention and making it more practical. For example, as Figure 8 and Figure 9As shown in the figure, in each pair of flange quick-sealing devices, slide rails 22 are arranged on two pairs of sides at the bottom of the cylinder body 2 of the flange quick-sealing device, and sliding grooves 51 (for example, the sliding grooves 51 are formed by assembling inverted T-shaped long strips on the frame body 5) matching the slide rails 22 are arranged on the frame body 5; the slide rails 22 and the sliding grooves 51 are parallel to the connection line of the two flange quick-sealing devices, and the slide rails 22 are assembled in the sliding grooves 51 to enable the distance between the two flange quick-sealing devices in each pair of flange quick-sealing devices to be adjustable; when adopting this design, any one of the flange quick-sealing devices in each pair of flange quick-sealing devices can slide on the sliding grooves 51. Of course, it is also possible to fix one of the flange quick-sealing devices in each pair of flange quick-sealing devices on the sliding grooves 51 or the frame body 5 (then this flange quick-sealing device cannot slide), and the other flange quick-sealing device can slide on the sliding grooves 51.

[0051] Alternatively, as Figure 5 and Figure 8 shown in the figure, there are two frame bodies 5, namely a first frame body 5a and a second frame body 5b, and the second frame body 5b can slide into / slide out of the first frame body 5a. For example, rollers 52 are arranged at the bottom of the second frame body 5b; a bottom plate 53 is arranged at the bottom of the first frame body 5a, and there is a space for accommodating the second frame body 5b between the top and the bottom of the first frame body 5a; to enable the second frame body 5b to slide into / slide out of the first frame body 5a. When the second frame body 5b slides into the first frame body 5a, the second frame body 5b is located on the bottom plate 53, and the two frame bodies 5 can be integrally hoisted into a pressure test pit (not shown) for pressure test operations, which can effectively utilize the space resources of the pressure test pit. When the second frame body 5b slides out of the first frame body 5a, double-flange pipes can be installed / removed on the second frame body 5b; obviously, when the second frame body 5b slides into or out of the first frame body 5a, double-flange pipes can be installed / removed on the first frame body 5a.

[0052] In summary, when using a flange quick-sealing device of the present invention, the connection method of bolt fastening is not adopted to seal the flange. When using the present invention to seal the flange, the labor intensity of workers is low and the efficiency is higher; the sealing force of the blind plate on the flange is more constant and uniform. In a multi-station pressure test tooling of the present invention, since multiple pairs of the flange quick-sealing devices of the present invention are adopted to form multiple pressure test stations, multiple double-flange pipes can be simultaneously subjected to pressure test operations on the frame body.

[0053] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A quick flange sealing device, characterized in that: It includes a cylinder body (2) with an open top and a blind plate (1) located inside the cylinder body (2); One side of the blind plate (1) is a blind plate sealing surface (11) for sealing the flange (82). A notch (21) for placing a pipe body (81) is provided on the side wall of the cylinder body (2) facing the blind plate sealing surface (11). The inner side surface of the side wall of the cylinder body (2) is parallel to the blind plate sealing surface (11) and has a gap for clamping the flange (82); The other side of the blind plate (1) is the back surface (12) of the blind plate. A driving mechanism is connected to the back surface (12) of the blind plate, so that under the drive of the driving mechanism, the blind plate (1) moves closer to / away from the notch (21); A positioning tile body (4) is provided between the inner bottom surface of the cylinder body (2) and the outer peripheral surface of the blind plate (1). The inner surface of the positioning tile body (4) matches the outer peripheral surface of the blind plate (1), and the positioning tile body (4) extends below the notch (21); The positioning tile body (4) is detachably placed on the inner bottom surface of the cylinder body (2); The back surface (12) of the blind plate is detachably connected to the driving mechanism.

2. The quick flange sealing device according to claim 1, characterized in that: The driving mechanism is a hydraulic driving mechanism (3).

3. The quick flange sealing device according to claim 2, characterized in that: The hydraulic driving mechanism (3) includes a hydraulic cylinder and a hydraulic motor (36). The hydraulic cylinder includes a box body (31) fixed outside the cylinder body (2) and a piston (32) located inside the box body (31). The piston (32) divides the inner cavity of the box body (31) into two mutually isolated chambers, and each chamber is provided with a hydraulic medium channel (34). The two hydraulic medium channels (34) are respectively connected to the hydraulic motor (36) through hydraulic medium pipes (35). The piston (32) is connected with a piston rod (33) passing through the box body (31), and the piston rod (33) is connected to the back surface (12) of the blind plate.

4. A multi-station pressure test tooling, characterized in that: It includes a frame body (5), and multiple pairs of the flange quick sealing devices as described in any one of claims 1-3 are assembled on the frame body (5); In each pair of flange quick sealing devices, the blind plate sealing surfaces (11) of the two blind plates (1) face each other, and at least one blind plate (1) is provided with a pressure test medium channel (13). The pressure test medium channel (13) starts from the top of the blind plate (1) and ends at the middle of the blind plate sealing surface (11); It also includes a manifold (6) provided with a pressure test medium inlet (61). Each pressure test medium channel (13) is connected to the manifold (6) through a pressure test medium pipe (62).

5. The multi-station pressure testing tooling according to claim 4, characterized in that: A stop valve (63) is connected between the pressure test medium pipe (62) and the pressure test medium channel (13), and / or a stop valve (63) is connected between the pressure test medium pipe (62) and the manifold (6).

6. The multi-station pressure testing tooling according to claim 4, characterized in that: In each pair of flange quick sealing devices, the distance between the two flange quick sealing devices is adjustable.

7. The multi-station pressure testing tooling according to claim 5, characterized in that: There are two frame bodies (5), which are respectively a first frame body (5a) and a second frame body (5b). The second frame body (5b) can slide into / slide out of the first frame body (5a).

Images