A four-way valve and fracturing pipe assembly

Abstract

This utility model relates to a four-way valve and fracturing pipe assembly, comprising: a valve body having four extended ends, each extended end having a docking channel, and the four docking channels extending inward to form a connecting structure; and four extended pipes, the four extended pipes being respectively disposed within the four docking channels, each extended pipe being at least partially inserted into the docking channel to form a docking end and an insertion end, each insertion end having a radially extending blocking ring, the inner surface of the blocking ring having a sealing gasket adhered to it, the inner ring of the sealing gasket being circumferentially attached to the outer surface of the extended pipe in the installed state. This utility model, by having at least a partial insertion of the extended pipe into the docking channel to form a docking end and an insertion end, allows for maintenance by only removing the corresponding extended pipe and retracting it into the valve body to expose the docking surface, without disassembling the entire valve body, significantly improving maintenance convenience and overcoming the limitation of traditional four-way valves requiring complete disassembly for maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of four-way technology, and specifically relates to a four-way valve, including a fracturing pipe assembly of the four-way valve. Background Technology

[0002] In the field of oil and gas extraction, fracturing is an important means to increase the production of oil and gas wells. As a key component in fracturing operations, the performance of the fracturing tubing directly affects the fracturing effect and operational safety. The four-way valve, as the core component in the fracturing tubing that enables the connection of multiple pipes, must possess excellent sealing performance, reliability, and convenient maintenance capabilities.

[0003] Traditional four-way valves typically use a direct connection between the valve body and the pipeline. Under long-term high-pressure operating conditions, the connection between the valve body and the pipeline is prone to sealing failure, requiring disassembly and maintenance. However, during maintenance, traditional four-way valves require the entire four-way valve to be disassembled from the pipeline, which is cumbersome, time-consuming, and labor-intensive, seriously affecting the progress of the operation. Utility Model Content

[0004] This utility model addresses the problems of existing technologies by providing a four-way valve and fracturing pipe assembly, the specific technical solution of which is as follows:

[0005] On the one hand, this application provides a four-way connector, including:

[0006] The valve body has four extended ends, each of which has a docking channel, and the four docking channels extend inward to form a connecting structure.

[0007] The valve body has four extension tubes, which are respectively disposed in four docking channels. Each extension tube is at least partially inserted into the docking channel to form a docking end and an insertion end. The insertion end has a radially extending blocking ring. A sealing gasket is adhered to the inner side of the blocking ring. The inner ring of the sealing gasket is circumferentially attached to the outer surface of the extension tube. In the installed state, the sealing gasket is deformed by the pressure of the blocking ring and adheres to the inner wall of the docking channel to seal the gap between the extension tube and the valve body.

[0008] As a further technical solution of this utility model, the inner ring of the sealing gasket has an axially extending extension portion, and the thickness of the extension portion decreases as it extends axially to form a spike structure on the radial cross section. In the installed state, the spike structure of the extension portion can be inserted into the gap between the extension tube and the valve body and deform to fill the gap.

[0009] As a further technical solution of this utility model, the connecting end of the extension tube has a radially extending connecting lug, and the connecting lug is provided with a screw hole along the thickness direction. The screw hole is provided in multiple sets and is evenly arranged around the connecting lug in the circumferential direction.

[0010] As a further technical solution of this utility model, an annular groove is provided on the mating lug of the mating end, and a sealing ring is embedded in the annular groove. In the installed state, the sealing ring is squeezed and deformed and fills the sealing annular groove.

[0011] On the other hand, this application also provides a fracturing pipe assembly, including the aforementioned four-way valve.

[0012] The beneficial effects of this utility model are as follows:

[0013] (1) Scalable extension tube design;

[0014] The extension tube is at least partially inserted into the docking channel, forming a docking end and an insertion end. During maintenance, only the corresponding extension tube needs to be removed and retracted into the valve body to expose the docking surface, without having to disassemble the entire valve body, greatly improving maintenance convenience and overcoming the limitation of traditional four-way valves requiring complete disassembly for maintenance.

[0015] (2) Multiple sealing structure design;

[0016] A sealing gasket is adhered to the inner side of the retaining ring at the insertion end. During installation, the sealing gasket is deformed by pressure and adheres to the inner wall of the docking channel, sealing the gap between the extension tube and the valve body. Compared with the traditional single sealing structure, the sealing effect is more reliable.

[0017] Furthermore, the extended portion of the inner ring of the sealing gasket has a spiked structure with decreasing axial thickness, which can be inserted into gaps and deformed to fill them during installation, further improving the sealing performance and effectively solving the problem that traditional sealing gaskets cannot completely fill tiny gaps. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a fracturing tube assembly is shown.

[0019] Figure 2 A schematic diagram of the internal structure of a four-way connector is shown.

[0020] Figure 3 A schematic diagram of the extension tube is shown.

[0021] Legend:

[0022] 100. Valve body; 110. Extension end; 120. Docking channel; 200. Extension tube; 210. Docking end; 211. Docking lug; 212. Screw hole; 213. Annular groove; 214. Sealing ring; 220. Insertion end; 221. Retaining ring; 222. Sealing gasket; 223. Extension portion. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0024] Figure 1 A schematic diagram of the overall structure of a fracturing tube assembly is shown. Figure 2 A schematic diagram of the internal structure of a four-way connector is shown. Figure 3 A schematic diagram of the extension tube 200 is shown.

[0025] Figure 1 In this fracturing pipe assembly, there is a four-way connector, and all four ends of the four-way connector are connected to the pipeline to form the pipe assembly.

[0026] Figure 2 The present invention relates to a four-way valve, comprising a valve body 100 and four sets of extension pipes 200. The valve body 100 has four extension ends 110, each of which has a docking channel 120, and the four docking channels 120 extend inward to form a connecting structure. Each docking channel 120 can be retractably installed with an extension pipe 200. During installation, the extension pipe 200 replaces the valve body 100 to connect with the pipeline. When inspecting a certain pipeline connection, it is only necessary to remove the corresponding extension pipe 200 from the pipeline, and then retract the extension pipe 200 into the valve body 100 to expose the docking surface, which is convenient for maintenance.

[0027] Figure 3 A schematic diagram of the extension tube 200 is shown; Figure 3 In this process, the extension tube 200 is at least partially inserted into the docking channel 120 to form a docking end 210 and an insertion end 220. The docking end 210 is the exposed end of the extension tube 200, and the insertion end 220 is the end of the extension tube 200 inserted into the docking channel 120. The insertion end 220 has a radially extending retaining ring 221. A sealing gasket 222 is adhered to the inner surface of the retaining ring 221, and the inner ring of the sealing gasket 222 circumferentially covers the outer surface of the extension tube 200. In the installed state, the sealing gasket 222 is protected by the retaining ring 221. 21 is pressed and deformed and adhered to the inner wall of the docking channel 120 to seal the gap between the extension tube 200 and the valve body 100; in actual installation, the radially extending blocking ring 221 can prevent the extension tube 200 and the valve body 100 from being completely separated, and after installation, the extension tube 200 extends to its farthest point, the blocking ring 221 presses against the sealing gasket 222 and adheres to the inner wall of the valve body 100, forcing the sealing gasket 222 to deform to fill the gap between the extension tube 200 and the valve body 100, ensuring the sealing performance in the installed state.

[0028] See also Figure 3The inner ring of the sealing gasket 222 has an axially extending extension portion 223, and the thickness of the extension portion 223 decreases as it extends axially, forming a spike structure on the radial cross section. In the installed state, the spike structure of the extension portion 223 can be inserted into the gap between the extension tube 200 and the valve body 100 and deform to fill the gap. By using the spike structure of the extension portion 223, it is ensured that at least part of the extension portion 223 can extend into the gap, and the extended portion undergoes adaptive deformation in the shape of the gap under pressure, thereby completely filling and sealing the gap, further improving the sealing effect.

[0029] See also Figure 3 The extension tube 200 has a radially extending mating lug 211 on its mating end 210. The mating lug 211 has a screw hole 212 along the thickness direction. Multiple sets of screw holes 212 are evenly arranged around the circumference of the mating lug 211. In actual installation, the mating lug 211 is connected to the sealing flange outside the pipe, and the screw holes 212 correspond one-to-one with the screw holes on the sealing flange to be used for bolt installation.

[0030] See also Figure 3 The mating lug 211 of the mating end 210 is provided with an annular groove 213, and a sealing ring 214 is embedded in the annular groove 213. In the installed state, the sealing ring 214 is compressed and deformed to fill the sealing annular groove 213; that is, under normal conditions, the sealing ring 214 is at least partially exposed outside the annular groove 213, and can deform and seal the mating surface after installation to ensure the sealing effect after the extension tube 200 and the pipeline are connected.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A four-way cross, characterized in that include: The valve body (100) has four extension ends (110), each extension end (110) is provided with a docking channel (120), and the four docking channels (120) extend inward to form a connecting structure. The device includes four extension tubes (200), which are respectively disposed in four docking channels (120). Each extension tube (200) is at least partially inserted into the docking channel (120) to form a docking end (210) and an insertion end (220). The insertion end (220) has a radially extending blocking ring (221). A sealing gasket (222) is adhered to the inner side of the blocking ring (221). The inner ring of the sealing gasket (222) is circumferentially attached to the outer surface of the extension tube (200). In the installed state, the sealing gasket (222) is deformed by the blocking ring (221) and adheres to the inner wall of the docking channel (120) to seal the gap between the extension tube (200) and the valve body (100).

2. A cross according to claim 1, characterised in that: The inner ring of the sealing gasket (222) has an axially extending extension portion (223), and the thickness of the extension portion (223) decreases as it extends axially to form a spike structure on the radial cross section. In the installed state, the spike structure of the extension portion (223) can be inserted into the gap between the extension tube (200) and the valve body (100) and deform to fill the gap.

3. A four-way valve according to claim 2, wherein: The extension tube (200) has a radially extending docking lug (211) on its docking end (210). The docking lug (211) has a screw hole (212) along the thickness direction. The screw holes (212) are provided in multiple sets and are evenly arranged around the docking lug (211).

4. A four-way valve according to claim 3, wherein: The docking lug (211) of the docking end (210) is provided with an annular groove (213), and a sealing ring (214) is embedded in the annular groove (213). In the installed state, the sealing ring (214) is squeezed and deformed and fills the sealing annular groove (213).

5. A fracturing tube set, characterized by: Includes the four-way valve as described in any one of claims 1-4 above.

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