Pressure protection device for oilfield water injection pipeline

Abstract

The utility model discloses a pressure protection device for an oil field water injection pipeline, which relates to the technical field of oil field water injection devices and comprises a mounting pipe, one end of the mounting pipe is connected with a connecting pipe through a connecting mechanism, the mounting pipe is connected with a sampling port, the mounting pipe is connected with an exhaust pipe, and the exhaust pipe is connected with an exhaust pipe. A pressure detection mechanism is mounted at one end, away from the connecting pipe, of the mounting pipe; a filter frame is installed in the connecting pipe, a filter screen is arranged on the filter frame, a rotating plate is rotationally connected to the filter frame, a cleaning brush is installed on the rotating plate, and a spiral blade is connected to the rotating plate through a first connecting rod; when water enters the installation pipe, the spiral blade can be impacted, the spiral blade can drive the cleaning brush to rotate, the cleaning brush can clean the filter screen, manpower, material resources and time cost are greatly saved, the operation efficiency and convenience of the whole device are improved, and therefore the pressure detection effect is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield water injection device technical field, concretely is an oilfield water injection pipeline pressure protection device. BACKGROUND

[0002] In the oilfield water injection process, in order to make up the underground depletion caused after the crude oil production, maintain or improve the oil layer pressure, realize the high yield and stable production of oilfield, and obtain higher recovery rate, must carry out water injection to oilfield. However, the pipeline may face various pressure changes in the water injection process, and these pressure changes may cause safety accidents if they exceed the bearing range of the pipeline. Therefore, it is particularly important to install a pressure protection device.

[0003] In the related art, a sealing piston is pushed to slide by the water pressure inside the pipeline, so that the pressing head extrudes a pressure sensor to detect the water pressure, and a collection board collects pressure data, and a wireless network connection module uploads the data to a client or a server, so that the pressure data is analyzed to determine the pipeline operation, and the sealing piston avoids direct contact between water and the pressure sensor. However, the above-mentioned device still has some shortcomings, such as: the filter plate may be blocked during filtering, which may reduce the filtering effect and even affect the normal operation of the water injection pipeline. After the filter plate is blocked, the staff needs to disassemble, clean and reinstall the filter plate, which takes a long time and may affect the normal production of the oilfield. Therefore, the technical personnel in the art provide an oilfield water injection pipeline pressure protection device to solve the problems in the above background art. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an oilfield water injection pipeline pressure protection device to solve the problems in the above background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An oilfield water injection pipeline pressure protection device comprises:

[0007] A mounting pipe is connected with a connecting pipe at one end through a connecting mechanism, a sampling port is connected to the mounting pipe, an exhaust pipe is connected to the mounting pipe, and a pressure detection mechanism is installed at the end of the mounting pipe away from the connecting pipe.

[0008] A filter frame is installed in the connecting pipe, a filter screen is arranged on the filter frame, a rotating plate is rotatably connected to the filter frame, a cleaning brush is installed on the rotating plate, the cleaning brush is in contact with the filter screen, and a helical blade is connected to the rotating plate through a first connecting rod.

[0009] Preferably, the connecting mechanism comprises a fixing ring, a side plate, a connecting plate, a reset spring and a baffle, the side plate and the connecting plate are connected with the connecting pipe and the mounting pipe respectively, the baffle is fixedly connected with the connecting plate, the reset spring is connected with the fixing ring and the baffle at two ends respectively, and the connecting plate and the side plate are provided with staggered triangular blocks at one end.

[0010] Preferably, one end of the connecting pipe is provided with a clamping ring, one end of the mounting pipe is provided with a clamping groove for clamping the clamping ring, and a first sealing ring is arranged between the connecting pipe and the mounting pipe.

[0011] Preferably, the pressure detection mechanism comprises a pressure sensor, a mounting plate, a piston and a push plate, the pressure sensor is fixedly installed on the mounting plate, the mounting plate is fixedly connected with the mounting pipe through a fixing bolt, the piston and the push plate are connected through a second connecting rod, and the piston is slidingly connected in the mounting pipe.

[0012] Preferably, a limiting ring is arranged in the mounting pipe, the limiting ring is in contact with the piston, and a second sealing ring is arranged between the mounting plate and the mounting pipe.

[0013] Preferably, limiting plates are fixedly arranged on both sides of the connecting plate, and the limiting plates are connected on both sides of the triangular block.

[0014] Preferably, first control valves are arranged on the exhaust pipe and the sampling port, and a second control valve is arranged on the connecting pipe.

[0015] Preferably, a mounting ring is arranged on the connecting pipe, the filter frame is connected with the mounting ring through a first mounting bolt, and the cleaning brush is connected with the rotating plate through a second mounting bolt.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1、The spiral blade is arranged, when water enters the mounting pipe, the spiral blade can be impacted, the spiral blade is impacted by the water flow and rotates, so that the cleaning brush rotates, the cleaning brush can clean the filter screen, the filter screen is prevented from being blocked to affect the filtration use, manual cleaning is not needed frequently, manpower, material resources and time cost are greatly saved, the operation efficiency and convenience of the whole device are improved, and the pressure detection effect is improved obviously.

[0018] 2、The pressure detection mechanism can detect the liquid pressure, data after detection can be uploaded to the client or the server through the wireless network connection module, pressure data is analyzed, and the pipeline operation condition is judged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of an oilfield water injection pipeline pressure protection device in the embodiment of the application;

[0020] Figure 2 It is a sectional view structural schematic view of an oilfield water injection pipeline pressure protection device in the embodiment of the application;

[0021] Figure 3 It is Figure 2 An enlarged view of A in the middle;

[0022] Figure 4 It is Figure 2 An enlarged view of B in the middle.

[0023] In the figure: 1, mounting pipe; 2, connecting pipe; 3, sampling port; 4, exhaust pipe; 5, filter frame; 6, filter screen; 7, rotating plate; 8, cleaning brush; 9, helical blade; 10, fixing ring; 11, side plate; 12, connecting plate; 13, return spring; 14, baffle; 15, triangular block; 16, clamping ring; 17, limiting ring; 18, second sealing ring; 19, limiting plate; 20, first control valve; 21, second control valve; 22, mounting ring; 23, first mounting bolt; 24, second mounting bolt; 25, clamping groove; 26, first sealing ring; 27, pressure sensor; 28, mounting plate; 29, piston; 30, push plate; 31, fixing bolt; 32, first connecting rod; 33, second connecting rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-4 The present application provides a technical solution:

[0026] An oilfield water injection pipeline pressure protection device, comprising:

[0027] The installation pipe 1 is connected with the connecting pipe 2 at one end through a connecting mechanism, the connecting mechanism comprises a fixing ring 10, a side plate 11, a connecting plate 12, a reset spring 13 and a baffle 14, the side plate 11 and the connecting plate 12 are connected with the connecting pipe 2 and the installation pipe 1 respectively, the baffle 14 is fixedly connected with the connecting plate 12, the reset spring 13 is connected with the fixing ring 10 and the baffle 14 at two ends respectively, the connecting plate 12 and the side plate 11 are provided with staggered triangular blocks 15 at one end, the connecting plate 12 is fixedly provided with limiting plates 19 at two sides, the limiting plates 19 are connected at two sides of the triangular blocks 15, the installation pipe 1 is connected with a sampling port 3, the installation pipe 1 is connected with an exhaust pipe 4, the first control valve 20 is installed on the exhaust pipe 4 and the sampling port 3, and the second control valve 21 is installed on the connecting pipe 2;

[0028] When the installation pipe 1 is connected with the connecting pipe 2, the fixing ring 10 is pulled, the triangular blocks 15 at one end of the side plate 11 are connected between the limiting plates 19, the limiting plates 19 can limit the connection of the triangular blocks 15, the connecting plate 12 has toughness, the inclined surfaces of the two triangular blocks 15 are in contact connection, the connecting plate 12 is pushed, the two triangular blocks 15 are staggered and clamped, then the fixing ring 10 is loosened, the reset spring 13 drives the fixing ring 10 to move, the fixing ring 10 is in contact connection with the side plate 11, and the clamping stability between the triangular blocks 15 can be improved;

[0029] When the installation pipe 1 is connected with the connecting pipe 2, the fixing ring 10 is pulled, the triangular blocks 15 at one end of the side plate 11 are connected between the limiting plates 19, the limiting plates 19 can limit the connection of the triangular blocks 15, the connecting plate 12 has toughness, the inclined surfaces of the two triangular blocks 15 are in contact connection, the connecting plate 12 is pushed, the two triangular blocks 15 are staggered and clamped, then the fixing ring 10 is loosened, the reset spring 13 drives the fixing ring 10 to move, the fixing ring 10 is in contact connection with the side plate 11, and the clamping stability between the triangular blocks 15 can be improved;

[0030] Further, the connecting pipe 2 is provided with a clamping ring 16 at one end, the installation pipe 1 is provided with a clamping groove 25 for clamping the clamping ring 16 at one end, and the first sealing ring 26 is arranged between the connecting pipe 2 and the installation pipe 1.

[0031] The pressure detection mechanism is installed at the end, away from the connecting pipe 2, of the installation pipe 1, the pressure detection mechanism comprises a pressure sensor 27, a mounting plate 28, a piston 29 and a push plate 30, the pressure sensor 27 is fixedly installed on the mounting plate 28, the mounting plate 28 is fixedly connected with the installation pipe 1 through a fixing bolt 31, the piston 29 and the push plate 30 are connected through a second connecting rod 33, the piston 29 is slidingly connected in the installation pipe 1, the installation pipe 1 is provided with a limiting ring 17, the limiting ring 17 is in contact connection with the piston 29, and the second sealing ring 18 is arranged between the mounting plate 28 and the installation pipe 1;

[0032] The connecting pipe 2 is connected with the interface of the oil field water injection pipeline, the second control valve 21 is opened, the water in the pipeline enters the installation pipe 1 through the connecting pipe 2, the water in the pipeline pushes the piston 29, the piston 29 moves in the installation pipe 1, the piston 29 extrudes the push plate 30 through the second connecting rod 33, the push plate 30 pushes the pressure sensor 27, the liquid pressure can be detected, the detected data can be uploaded to the client or the server through the wireless network connection module, so that the pressure data is analyzed, and the pipeline operation is judged;

[0033] The fixing bolt 31 is disassembled, the mounting plate 28 is disassembled, so that one end of the installation pipe 1 is disassembled to maintain the pressure sensor 27, the second sealing ring 18 can improve the connection sealing between the mounting plate 28 and the installation pipe 1, and the movement of the piston 29 is limited through the setting of the limiting ring 17.

[0034] The connecting pipe 2 is provided with a filter frame 5, the filter frame 5 is provided with a filter screen 6, the filter frame 5 is rotatably connected with a rotating plate 7, the rotating plate 7 is provided with a cleaning brush 8, the cleaning brush 8 is in contact with the filter screen 6, the rotating plate 7 is connected with a spiral blade 9 through a first connecting rod 32, the connecting pipe 2 is provided with a mounting ring 22, the filter frame 5 is connected with the mounting ring 22 through a first mounting bolt 23, and the cleaning brush 8 is connected with the rotating plate 7 through a second mounting bolt 24.

[0035] When the water in the pipeline enters the connecting pipe 2, the filter screen 6 can filter the water to avoid impurities from blocking the installation pipe 1, the spiral blade 9 can be impacted when the water enters the connecting pipe 2, and the spiral blade 9 can be rotated under the impact force of the water flow. The spiral blade 9 drives the rotating plate 7 to rotate through the first connecting rod 32, the rotating plate 7 drives the cleaning brush 8 to rotate, the cleaning brush 8 can clean the filter screen 6, so that the filter screen 6 is not blocked and the use of the filter is not affected, and manual cleaning of the filter screen 6 is not required frequently, which greatly saves manpower, material resources and time cost, improves the operation efficiency and convenience of the whole device, and significantly improves the pressure detection effect.

[0036] Through the setting of the first mounting bolt 23, the filter frame 5 and the mounting ring 22 are fixedly connected, and the filter frame 5 is convenient to disassemble, and through the setting of the second mounting bolt 24, the cleaning brush 8 is convenient to replace.

[0037] It should be noted that the specific model and specification of the pressure sensor 27 need to be determined according to the actual specification of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure protection device for oilfield water injection pipelines, characterized in that, include: The installation tube (1) has a connecting tube (2) connected to one end via a connecting mechanism. A sampling port (3) is connected to the installation tube (1). An exhaust pipe (4) is connected to the installation tube (1). A pressure detection mechanism is installed at the end of the installation tube (1) away from the connecting tube (2). A filter frame (5) is installed inside the connecting pipe (2). A filter screen (6) is provided on the filter frame (5). A rotating plate (7) is rotatably connected to the filter frame (5). A cleaning brush (8) is installed on the rotating plate (7). The cleaning brush (8) is in contact with the filter screen (6). A spiral blade (9) is connected to the rotating plate (7) through a first connecting rod (32).

2. The oilfield water injection pipeline pressure protection device according to claim 1, characterized in that: The connecting mechanism includes a fixing ring (10), a side plate (11), a connecting plate (12), a return spring (13), and a baffle (14). The side plate (11) and the connecting plate (12) are respectively connected to the connecting pipe (2) and the mounting pipe (1). The baffle (14) is fixedly connected to the connecting plate (12). The two ends of the return spring (13) are respectively connected to the fixing ring (10) and the baffle (14). One end of the connecting plate (12) and the side plate (11) is provided with staggered triangular blocks (15).

3. The oilfield water injection pipeline pressure protection device according to claim 1, characterized in that: One end of the connecting pipe (2) is provided with a locking ring (16), and one end of the mounting pipe (1) is provided with a locking groove (25) for the locking ring (16) to engage. A first sealing ring (26) is provided between the connecting pipe (2) and the mounting pipe (1).

4. The oilfield water injection pipeline pressure protection device according to claim 2, characterized in that: The pressure detection mechanism includes a pressure sensor (27), a mounting plate (28), a piston (29), and a push plate (30). The pressure sensor (27) is fixedly mounted on the mounting plate (28), and the mounting plate (28) is fixedly connected to the mounting tube (1) by fixing bolts (31). The piston (29) is connected to the push plate (30) by a second connecting rod (33), and the piston (29) is slidably connected inside the mounting tube (1).

5. The oilfield water injection pipeline pressure protection device according to claim 4, characterized in that: The mounting tube (1) is provided with a limiting ring (17), which is in contact with the piston (29). A second sealing ring (18) is provided between the mounting plate (28) and the mounting tube (1).

6. The oilfield water injection pipeline pressure protection device according to claim 5, characterized in that: Limiting plates (19) are fixedly provided on both sides of the connecting plate (12), and the limiting plates (19) are connected between the triangular blocks (15).

7. The oilfield water injection pipeline pressure protection device according to claim 1, characterized in that: A first control valve (20) is installed on the exhaust pipe (4) and the sampling port (3), and a second control valve (21) is installed on the connecting pipe (2).

8. The oilfield water injection pipeline pressure protection device according to claim 1, characterized in that: The connecting pipe (2) is provided with an installation ring (22), the filter frame (5) is connected to the installation ring (22) by a first installation bolt (23), and the cleaning brush (8) is connected to the rotating plate (7) by a second installation bolt (24).

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