A method and device for detecting leakage of fracturing manifold

Abstract

The invention discloses a method and device for detecting leakage of a fracturing manifold, relates to the field of fracturing manifolds, solves the problem that it is difficult for existing devices to perform efficient air tightness detection on a fracturing manifold according to requirements, and adopts the following scheme: comprising a bracket assembly and a fracturing manifold, the main body of the fracturing manifold is a main pipe, and a branch pipe is sealed and connected to the outer wall of the main pipe; an inflation assembly connected to the front end of the main pipe and used for inflating its inner cavity is fixedly installed on the front side wall of the bracket assembly, a head assembly for blocking the rear end of the main pipe is fixedly connected to the rear side wall of the bracket assembly, and a detection assembly for detecting the air tightness of the fracturing manifold is also arranged on the side wall of the bracket assembly; the method and device for detecting leakage of a fracturing manifold, through the arrangement of an inflation assembly, a detection assembly and a head assembly on the bracket assembly, air is inflated therein by the inflation assembly, and then the real-time air pressure at the inner specification position thereof is detected by the pressure monitoring gauges in each group of detection assemblies.

Description

Technical Field

[0001] The invention relates to the technical field of fracturing manifolds, and in particular to a method and device for detecting leakage of a fracturing manifold. Background Art

[0002] The fracturing manifold is a necessary equipment for outputting high pressure fracturing. Its main structure includes large-diameter gate valves, fracturing heads, flange nipples and other parts. The flange metal gaskets are used to seal the parts to meet the fracturing operation requirements of various fracturing media. The fracturing manifold connects the high-pressure output ends of multiple fracturing vehicles through high-pressure elbows and high-pressure tees, and one or more output ports are connected to the wellhead through high-pressure pipelines;

[0003] After searching, the application with patent number 202221953428.4 discloses a fracturing manifold structure, including a connecting pipe and a main pipe, the ends of the connecting pipe and the main pipe are both provided with flanges, two branch pipes are provided on both sides of the main pipe, the ends of the branch pipes are provided with mounting heads, and the sides of the main pipe are both integrally formed with two mounting seats, a mounting groove is provided inside the flange, an internal threaded ring is welded and fixed at the internal edge of the mounting groove, and an external threaded ring is screwed inside the internal threaded ring; by designing a first sealing gasket inside the mounting groove, the card body can be fixedly installed by screwing the external threaded ring inside the internal threaded ring, and when the first sealing gasket is closed inside the mounting groove, the card body is embedded in the card groove, so that the first sealing gasket is closed inside the mounting groove to strengthen the fastening, and the first sealing gasket is placed more stably when the two flanges are closed and installed, so that the installation is more convenient and it is not easy to fall off during installation;

[0004] The above application documents achieve convenient installation of the fracturing manifold by setting the installation method. However, during the production process of the fracturing manifold, it is necessary to test the air tightness of the fracturing manifold, especially the air tightness test of the connection between the branch pipe and the main pipe flange, to avoid leakage affecting its own quality. Therefore, how to efficiently test the air tightness of the fracturing manifold has become an urgent problem to be solved.

[0005] Therefore, we propose a method and device for detecting leakage of a fracturing manifold. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a method and device for detecting leakage of a fracturing manifold, which solves the problem that the prior devices are difficult to perform efficient air tightness detection on the fracturing manifold according to requirements.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method and device for detecting leakage of a fracturing manifold, comprising a support assembly and a fracturing manifold placed on the top thereof, wherein the main body of the fracturing manifold is a main pipe, and a branch pipe is connected to the outer wall of the main pipe through a flange seal;

[0008] An inflation assembly connected to the front end of the main pipe and used to inflate its inner cavity is fixedly installed on the front side wall of the support assembly, a head assembly used to seal the rear end of the main pipe is fixedly connected to the rear side wall of the support assembly, and a detection assembly for detecting the air tightness of the fracturing manifold is also arranged on the side wall of the support assembly.

[0009] As a preferred solution of the fracturing manifold leakage detection method and device of the present invention, the inflation assembly includes a first guide portion, the first guide portion includes an elastic plastic rib and a wooden baffle, a first sealing ring located outside the main pipe end is fixedly installed on the inner side wall of the wooden baffle, a first clamp is clamped on the first sealing ring, an air duct is penetrated at the center of the wooden baffle, and the inflation assembly also includes a blower with an output end as an air duct and fixedly installed at the bottom of the bracket assembly;

[0010] Among them, the setting of the first guide part can adjust the position of the first sealing ring to ensure the sealing effect. At the same time, the sealing method of the first clamp is simple to operate and has good air tightness.

[0011] As a preferred solution of the fracturing manifold leakage detection method and device described in the present invention, a first sealing sleeve with the same inner diameter specification as the main pipe end is fixedly installed on the inner wall of the wooden baffle in the inflation component, and the first sealing sleeve includes an elastic sealing bucket made of elastic plastic ribs and three groups of elastic rib rings supporting it on the inside.

[0012] As a preferred solution of the fracturing manifold leakage detection method and device described in the present invention, the detection assembly includes a second guide portion, the second guide portion includes an elastic plastic rib and a wooden baffle, a second sealing ring located on the outside of the branch pipe end is fixedly installed on the inner wall of the wooden baffle, a second clamp is clamped on the second sealing ring, a second sealing sleeve is fixedly installed on the inner wall of the wooden baffle, a guide column mounted in the middle of the second sealing sleeve is also fixedly connected to the center of the wooden baffle, and a pressure monitoring gauge located on the inner side of the flange connection between the main pipe and the branch pipe is fixedly connected to the outer end of the guide column.

[0013] As a preferred solution of the fracturing manifold leakage detection method and device of the present invention, the guide column is an aluminum column, and the pressure monitoring meter is wirelessly connected to the outer main control console via a Bluetooth signal.

[0014] As a preferred solution of the fracturing manifold leakage detection method and device described in the present invention, the head assembly includes a third guide portion, the third guide portion includes an elastic plastic rib and a wooden baffle, a third sealing ring located outside the rear end of the main pipe is fixedly installed on the inner side wall of the wooden baffle, a third clamp is clamped on the third sealing ring, and a third sealing sleeve is fixedly installed on the inner side wall of the wooden baffle.

[0015] As a preferred solution of the fracturing manifold leakage detection method and device described in the present invention, the main body of the bracket assembly is a bracket plate, and a support frame is fixedly installed on the top of the bracket plate. The support frame is welded by a support column and an arc frame at the top end thereof, and the arc end surface on the top side of the support frame is tightly attached to the bottom of the fracturing manifold.

[0016] As a preferred solution of the fracturing manifold leakage detection method and device of the present invention, four sets of relatively positioned leg frames are fixedly installed at the four corners of the bottom of the bracket plate, the leg frames are L-shaped angle frames, and the bottom end surfaces of the leg frames are fan-shaped surfaces.

[0017] A fracturing manifold leakage detection method, the detection method comprising the following steps:

[0018] S1: After assembling the fracturing manifold, place it on each group of support frames on the top side of the support assembly;

[0019] S2: Then, the detection assembly is mounted on the front end of the main pipe in the fracturing manifold, and is sealed and assembled using a first clamp, at which time the outer end of the air duct is located inside the fracturing manifold;

[0020] S3: Then, the end cap assembly is mounted on the rear end of the main pipe in the fracturing manifold, and the sealing performance of the assembly is ensured by using a third clamp;

[0021] S4: Finally, the detection assembly is mounted on the outer end of the branch pipe from the side, and the second clamp is used to seal it. At this time, the pressure monitoring gauge at the outer end of the guide column in the detection assembly is located on the inner side of the flange at the connection between the main pipe and the branch pipe;

[0022] S5: using the blower in the inflation assembly to inflate the inside of the fracturing manifold, so that the air pressure inside the manifold is continuously increased, and at this time, the monitoring air pressure value of the pressure monitoring gauge in the detection assembly is transmitted to the console;

[0023] S6: After standing for a period of time, observe the changes in the air pressure values ​​of each group of pressure monitoring gauges, and specifically monitor the sealing of each group of flange connections.

[0024] The present invention provides a method and device for detecting leakage of a fracturing manifold, which has the following beneficial effects:

[0025] 1. The fracturing manifold leakage detection method and device can seal the fracturing manifold from each end thereof by arranging the inflation component, the detection component and the head component on the support component, and inflate the fracturing manifold with air to increase the pressure inside thereof, and then the pressure monitoring gauge in each group of the detection component detects the real-time air pressure at the inside specification position thereof, thereby realizing the detection of the sealing of each connection in the fracturing manifold, solving the problem that the existing device is difficult to perform efficient air tightness detection on the fracturing manifold according to the demand;

[0026] 2. The fracturing manifold leakage detection method and device, through the arrangement of the detection components on the outer side of each branch, can enable the guide column and the pressure monitoring gauge therein to probe into the inner side of the flange connection at the corresponding position, so as to accurately detect the position of the leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the fracturing manifold of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the bracket assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the inflatable component of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the plug assembly of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the inspection component of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the first sealing sleeve of the present invention.

[0034] In the figure: 1. bracket assembly; 11. bracket plate; 12. leg frame; 13. support frame; 2. fracturing manifold; 21. main pipe; 22. branch pipe; 3. inflation assembly; 31. first guide part; 32. first sealing ring; 33. first sealing sleeve; 331. elastic sealing bucket; 332. elastic rib ring; 34. first clamp; 35. blower; 36. air duct; 4. detection assembly; 41. second guide part; 42. second sealing ring; 43. second sealing sleeve; 44. second clamp; 45. guide column; 46. pressure monitoring gauge; 5. head assembly; 51. third guide part; 52. third sealing ring; 53. third sealing sleeve; 54. third clamp. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-7 The embodiment of the present invention provides a technical solution: a method and device for detecting leakage of a fracturing manifold, comprising a support assembly 1 and a fracturing manifold 2 placed on the top thereof, wherein the main body of the fracturing manifold 2 is a main pipe 21, and a branch pipe 22 is connected to the outer wall of the main pipe 21 through a flange seal; an inflation assembly 3 connected to the front end of the main pipe 21 and used for inflating its inner cavity is fixedly installed on the front side wall of the support assembly 1, a head assembly 5 for plugging the rear end of the main pipe 21 is fixedly connected to the rear side wall of the support assembly 1, and a detection assembly 4 for detecting the air tightness of the fracturing manifold 2 is also arranged on the side wall of the support assembly 1;

[0037] The inflatable component 3 includes a first guide portion 31, which includes an elastic plastic rib and a wooden baffle. A first sealing ring 32 located outside the end of the main pipe 21 is fixedly installed on the inner wall of the wooden baffle, and a first clamp 34 is clamped on the first sealing ring 32. A wind duct 36 is penetrated at the center of the wooden baffle. The inflatable component 3 also includes a blower 35 with the wind duct 36 as the output end and fixedly installed at the bottom of the bracket component 1; wherein, the setting of the first guide portion 31 can adjust the position of the first sealing ring 32 to ensure the sealing effect, and the clamping sealing method of the first clamp 34 is simple to operate and has good air tightness; a first sealing sleeve 33 with the same inner diameter specification as the end pipe of the main pipe 21 is fixedly installed on the inner wall of the wooden baffle in the inflatable component 3, and the first sealing sleeve 33 includes an elastic sealing bucket 331 made of elastic plastic ribs and three groups of elastic rib rings 332 supporting it on the inside.

[0038] The detection component 4 includes a second guide part 41, which includes an elastic plastic rib and a wooden baffle. A second sealing ring 42 located on the outside of the end of the branch pipe 22 is fixedly installed on the inner wall of the wooden baffle, and a second clamp 44 is clamped on the second sealing ring 42. A second sealing sleeve 43 is fixedly installed on the inner wall of the wooden baffle. A guide column 45 sleeved in the middle of the second sealing sleeve 43 is also fixedly connected at the center of the wooden baffle, and a pressure monitoring gauge 46 located on the inner side of the flange connection between the main pipe 21 and the branch pipe 22 is fixedly connected to the outer end of the guide column 45; the guide column 45 is an aluminum column, and the pressure monitoring gauge 46 is wirelessly connected to the outer main control console via a Bluetooth signal.

[0039] The end cap assembly 5 includes a third guide portion 51, which includes an elastic plastic rib and a wooden baffle. A third sealing ring 52 located outside the rear end of the main pipe 21 is fixedly installed on the inner side wall of the wooden baffle. A third clamp 54 is clamped on the third sealing ring 52, and a third sealing sleeve 53 is fixedly installed on the inner side wall of the wooden baffle.

[0040] The method and device for detecting leakage of the fracturing manifold can seal the fracturing manifold 2 from each end thereof by arranging the inflating assembly 3, the detection assembly 4 and the sealing assembly 5 on the support assembly 1, and inflate the fracturing manifold 2 with air by the inflating assembly 3 to increase the pressure inside the fracturing manifold, and then the pressure monitoring gauge 46 in each group of the detection assembly 4 detects the real-time air pressure at the inside specification position thereof, thereby realizing the detection of the sealing of each connection in the fracturing manifold 2, solving the problem that the existing device is difficult to perform efficient air tightness detection on the fracturing manifold 2 according to the demand;

[0041] In addition, the fracturing manifold leakage detection method and device, through the provision of the detection component 4 outside each group of branch pipes 22, can enable the guide column 45 and the pressure monitoring gauge 46 therein to penetrate into the inner side of the flange connection at the corresponding position, so as to accurately detect the position of the leakage.

[0042] Embodiment 2:

[0043] The main body of the support assembly 1 is a support plate 11 , on the top of which a support frame 13 is fixedly installed. The support frame 13 is welded by a support column and an arc frame at the top thereof, and the arc end surface of the top side of the support frame 13 is tightly attached to the bottom of the fracturing manifold 2 .

[0044] Four groups of oppositely positioned leg frames 12 are fixedly installed at the four corners of the bottom of the bracket plate 11. The leg frames 12 are L-shaped angle frames, and the bottom end surfaces of the leg frames 12 are fan-shaped surfaces.

[0045] The working principle and use process of the present invention:

[0046] S1: After the fracturing manifold 2 is assembled, it is placed on each group of support frames 13 on the top side of the support assembly 1;

[0047] S2: Then, the detection assembly 4 is mounted on the front end of the main pipe 21 in the fracturing manifold 2, and is sealed and assembled using the first clamp 34. At this time, the outer end of the air duct 36 is located inside the fracturing manifold 2;

[0048] S3: Then, the end cap assembly 5 is mounted on the rear end of the main pipe 21 in the fracturing manifold 2, and the third clamp 54 is used to ensure the sealing performance of the mounting;

[0049] S4: Finally, the detection assembly 4 is mounted on the outer end of the branch pipe 22 from the side, and the second clamp 44 is used to seal it. At this time, the pressure monitoring gauge 46 at the outer end of the guide column 45 in the detection assembly 4 is located on the inner side of the flange at the connection between the main pipe 21 and the branch pipe 22;

[0050] S5: using the blower 35 in the inflation assembly 3 to inflate the inside of the fracturing manifold 2, so that the air pressure inside the manifold 2 is continuously increased, and at this time, the monitoring air pressure value of the pressure monitoring gauge 46 in the detection assembly 4 is transmitted to the console;

[0051] S6: After standing for a period of time, observe the changes in the air pressure values ​​of each group of pressure monitoring gauges 46, and specifically monitor the sealing performance of each group of flange connections.

[0052] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fracturing manifold leakage detection device, comprising a support assembly (1) and a fracturing manifold (2) placed on the top thereof, wherein the main body of the fracturing manifold (2) is a main pipe (21), and a branch pipe (22) is sealedly connected to the outer wall of the main pipe (21) via a flange; Features: An inflation component (3) connected to the front end of the main pipe (21) and used for inflating its inner cavity is fixedly mounted on the front side wall of the support component (1), a head component (5) used for sealing the rear end of the main pipe (21) is fixedly connected to the rear side wall of the support component (1), and a detection component (4) used for detecting the air tightness of the fracturing manifold (2) is also arranged on the side wall of the support component (1).

2. A fracturing manifold leakage detection device according to claim 1, characterized in that: The inflatable component (3) comprises a first guide portion (31), the first guide portion (31) comprises an elastic plastic rib and a wooden baffle, a first sealing ring (32) located outside the end of the main pipe (21) is fixedly mounted on the inner side wall of the wooden baffle, a first clamp (34) is clamped on the first sealing ring (32), an air duct (36) is inserted through the center of the wooden baffle, and the inflatable component (3) further comprises a blower (35) having an output end as the air duct (36) and fixedly mounted on the bottom of the bracket component (1).

3. A fracturing manifold leakage detection device according to claim 2, characterized in that: A first sealing sleeve (33) having the same inner diameter as the end pipe of the main pipe (21) is fixedly mounted on the inner wall of the wooden baffle in the inflation component (3). The first sealing sleeve (33) comprises an elastic sealing bucket (331) made of elastic plastic ribs and three groups of elastic rib rings (332) supporting the elastic sealing bucket on the inner side.

4. A fracturing manifold leakage detection device according to claim 1, characterized in that: The detection assembly (4) comprises a second guide portion (41), the second guide portion (41) comprises an elastic plastic rib and a wooden baffle, a second sealing ring (42) located outside the end of the branch pipe (22) is fixedly mounted on the inner wall of the wooden baffle, a second clamp (44) is clamped on the second sealing ring (42), a second sealing sleeve (43) is fixedly mounted on the inner wall of the wooden baffle, a guide column (45) sleeved on the middle of the second sealing sleeve (43) is fixedly connected at the center of the wooden baffle, and a pressure monitoring gauge (46) located inside the flange connection between the main pipe (21) and the branch pipe (22) is fixedly connected to the outer end of the guide column (45).

5. A fracturing manifold leakage detection device according to claim 4, characterized in that: The guide column (45) is an aluminum column, and the pressure monitoring meter (46) is wirelessly connected to the outer main control console via a Bluetooth signal.

6. A fracturing manifold leakage detection device according to claim 1, characterized in that: The sealing head assembly (5) comprises a third guide portion (51), the third guide portion (51) comprises an elastic plastic rib and a wooden baffle, a third sealing ring (52) located outside the rear end of the main pipe (21) is fixedly mounted on the inner side wall of the wooden baffle, a third clamp (54) is clamped on the third sealing ring (52), and a third sealing sleeve (53) is fixedly mounted on the inner side wall of the wooden baffle.

7. A fracturing manifold leakage detection device according to claim 1, characterized in that: The main body of the support assembly (1) is a support plate (11), and a support frame (13) is fixedly installed on the top of the support plate (11). The support frame (13) is welded by a support column and an arc frame at the top thereof, and the arc end surface of the top side of the support frame (13) is tightly attached to the bottom of the fracturing manifold (2).

8. A fracturing manifold leakage detection device according to claim 7, characterized in that: Four groups of leg supports (12) are fixedly installed at the four corners of the bottom of the support plate (11) and are located opposite to each other. The leg supports (12) are L-shaped angle supports, and the bottom end surface of the leg supports (12) is a fan-shaped surface.

9. A fracturing manifold leakage detection method according to claims 1-8, characterized in that: The detection method comprises the following steps: S1: After the fracturing manifold (2) is assembled, it is placed on each group of support frames (13) on the top side of the support assembly (1); S2: Then, the detection assembly (4) is mounted on the front end of the main pipe (21) in the fracturing manifold (2), and is sealed and assembled using a first clamp (34), wherein the outer end of the air pipe (36) is located inside the fracturing manifold (2); S3: The sealing head assembly (5) is then mounted on the rear end head of the main pipe (21) in the fracturing manifold (2), and the sealing performance of the mounting is ensured by using the third clamp (54); S4: Finally, the detection assembly (4) is mounted on the outer end of the branch pipe (22) from the side, and the second clamp (44) is used to seal the clamp. At this time, the pressure monitoring gauge (46) at the outer end of the guide column (45) in the detection assembly (4) is located on the inner side of the flange at the connection between the main pipe (21) and the branch pipe (22); S5: using the blower (35) in the inflation assembly (3) to inflate the inside of the fracturing manifold (2) so that the air pressure inside the fracturing manifold (2) is continuously increased, and at this time, the pressure value monitored by the pressure monitoring gauge (46) in the detection assembly (4) is transmitted to the control console; S6: After standing for a period of time, observe the changes in the air pressure values ​​of each group of pressure monitoring gauges (46), and specifically monitor the sealing performance of each group of flange connections.

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