Anti-theft device for oil extraction wellhead
By designing a detachable warning component and self-locking hook structure in the oil production wellhead, effective anti-theft of the oil production wellhead is achieved, solving the problems of easy rust and poor anti-theft effect of iron chain blocking in the existing technology, and improving the safety of the wellhead Easy to use.
Patent Information
- Application Number
- CN202422627301.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The existing anti-theft facilities at the oil production wellhead are blocked by iron chains, which are prone to rust and troublesome to install. The anti-theft effect is poor and cannot effectively prevent theft of oil wells.
An oil production wellhead anti-theft device is designed, including a wellhead and a manhole cover. The wellhead is equipped with external threaded sections and installation side holes. It has built-in removable warning components, including power supply, indicator light, voice alarm and warning light, which are conductive through elastic V-shaped The sheet and copper connector realize automatic alarm, disconnect the circuit and trigger the alarm device when trying to steal, and increase the difficulty of removing the manhole cover through the self-locking hook.
Effectively deter thefters, promptly remind staff, and improve the difficulty of removing the manhole cover from the wellhead, enhance the anti-theft effect, and avoid the rust of the iron chain and the installation complexity.
Smart Images
Figure CN222189982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wellhead anti-theft, in particular to an oil wellhead anti-theft device. Background Art
[0002] Oil production engineering is the general term for various engineering and technical measures taken on oil reservoirs through production wells and injection wells according to development goals during oil field exploitation; and the oil wellhead is the transportation of the produced oil through the wellhead. In recent years, the theft of oil and gas in the oil industry has seriously troubled the normal work of oil production units, especially the theft of crude oil through the oil wellhead and the destruction of oil production equipment, which directly affected the normal production of the oil field and caused huge losses to the enterprise.
[0003] In order to prevent the facilities in the oil well from being stolen, anti-theft facilities need to be installed at the wellhead. However, most of the existing anti-theft facilities are blocked by iron chains. After a long time, the iron chains are prone to rust, which is very troublesome to install and the anti-theft effect is relatively poor.
[0004] Therefore, it is necessary to provide a new oil wellhead anti-theft device to solve the above-mentioned technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides an oil wellhead anti-theft device.
[0006] The oil wellhead anti-theft device provided by the utility model comprises a wellhead, wherein an external thread section is arranged on the wellhead, and symmetrically distributed installation side holes are opened on both sides of the wellhead below the external thread section;
[0007] A detachable warning component is installed in the wellhead, and the warning component includes a mounting plate, on which a power supply, an indicator light, a voice alarm and a warning light are fixedly installed, an elastic V-shaped conductive sheet is fixedly installed at the wire connection end of the indicator light, and a copper contact sheet is fixedly installed on the elastic V-shaped conductive sheet, and a contact sheet seat arranged opposite to the copper contact sheet is fixedly installed at the center of the mounting plate;
[0008] The oil wellhead anti-theft device also includes a well cover, which is closed on the wellhead and threadedly connected to the wellhead, and a threaded through hole is opened at the center of the well cover, a threaded screw is inserted into the threaded through hole, and a push rod for pressing the copper joint is fixedly installed at the bottom of the screw.
[0009] Preferably, the power supply is electrically connected to the indicator light, the contact holder, the voice alarm and the warning light through a wire.
[0010] Preferably, two symmetrically distributed sleeves are fixedly mounted on the bottom of the mounting plate, and the mounting plate is installed in the wellhead via a fixing member arranged at the wellhead.
[0011] Preferably, the fixing member includes a waist-shaped plate, on which two symmetrically distributed threaded rods are fixedly mounted, and the two threaded rods pass through the mounting side holes opened at the wellhead and the two sleeve tubes at the bottom of the mounting plate, and nuts are installed at the other ends of the two threaded rods.
[0012] Preferably, a clamping assembly is provided at the bottom of the screw rod, and the clamping assembly includes a rotating ring, which is rotatably mounted on the push rod, and a plurality of hinged push rods are mounted on the rotating ring, each of the push rods is hingedly provided with a self-locking hook at the other end, and the connecting end of the self-locking hook is hinged to the inner top wall of the manhole cover.
[0013] Preferably, the nut at the top of the screw rod is provided with a cross groove.
[0014] Preferably, a gasket ring for supporting the mounting plate is fixedly installed in the wellhead.
[0015] Compared with the related art, the oil wellhead anti-theft device provided by the utility model has the following beneficial effects:
[0016] 1. When a thief unscrews the manhole cover or rotates the screw rod, the push rod no longer contacts the copper contact piece. Since the elastic V-shaped conductive piece is an elastic structure, the copper contact piece is disconnected from the contact piece seat. At this time, the indicator light, voice alarm and warning light are all in working state, and the voice alarm and warning light can well deter the thief and remind the staff to check in time;
[0017] 2. When the screw is screwed in so that the push rod at the bottom of the screw pushes the copper contact piece against the contact piece seat, the rotating ring slides down along with the push rod. At the same time, the push rod pushes the self-locking hook to flip outward, driving the hook body of the self-locking hook to engage with the inner wall of the wellhead, thereby increasing the difficulty of removing the manhole cover from the wellhead. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A structural schematic diagram of a preferred embodiment of the oil wellhead anti-theft device provided by the utility model;
[0019] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of the wellhead shown;
[0020] Figure 3 for Figure 1 Schematic diagram of the explosion structure shown;
[0021] Figure 4 for Figure 3 A schematic diagram of the structure of the warning component shown;
[0022] Figure 5 for Figure 4A schematic diagram of the structure of the bottom of the mounting plate in the warning assembly shown;
[0023] Figure 6 for Figure 3 The structural schematic diagram of the screw shown;
[0024] Figure 7 for Figure 2 The schematic diagram of the cross-sectional plan structure of the wellhead when the warning assembly is not installed;
[0025] Figure 8 for Figure 7 The schematic diagram of the cross-sectional plan structure of the wellhead when the warning assembly is installed is shown;
[0026] Fig. 9 A circuit diagram of a warning component circuit when the switch is closed;
[0027] Fig.10 This is a circuit diagram when the circuit switch of the warning component is disconnected.
[0028] Numbers in the figure: 1. Wellhead; 1a. Mounting side hole; 11. External thread section; 12. Gasket; 2. Warning assembly; 21. Mounting plate; 22. Power supply; 23. Indicator light; 231. Contact piece holder; 232. Copper contact piece; 233. Elastic V-shaped conductive piece; 24. Voice alarm; 25. Warning light; 26. Socket; 3. Fixing piece; 31. Waist plate; 32. Threaded rod; 33. Nut; 4. Well cover; 4a. Threaded through hole; 5. Screw; 5a. Cross groove; 51. Push rod; 6. Snap-on assembly; 61. Rotating ring; 62. Push rod; 63. Self-locking hook. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0031] See also Figures 1 to 9 An embodiment of the utility model provides an oil wellhead anti-theft device, which includes a wellhead 1, a warning component 2 and a well cover 4. The wellhead 1 is provided with an external thread section 11, and symmetrically distributed installation side holes 1a are opened on both sides of the wellhead 1 below the external thread section 11.
[0032] In the embodiments of the present invention, please refer to Figures 1 to 8, a detachable warning component 2 is installed in the wellhead 1, and the warning component 2 includes a mounting plate 21, on which a power supply 22, an indicator light 23, a voice alarm 24 and a warning light 25 are fixedly installed, an elastic V-shaped conductive sheet 233 is fixedly installed at the wire connection end of the indicator light 23, and a copper contact sheet 232 is fixedly installed on the elastic V-shaped conductive sheet 233, a contact sheet seat 231 arranged opposite to the copper contact sheet 232 is fixedly installed at the center of the mounting plate 21, and the power supply 22 is electrically connected to the indicator light 23, the contact sheet seat 231, the voice alarm 24 and the warning light 25 through a wire;
[0033] The manhole cover 4 is covered on the wellhead 1 and threadedly connected to the wellhead 1, and a threaded through hole 4a is opened at the center of the manhole cover 4, a threaded screw 5 is inserted into the threaded through hole 4a, and a push rod 51 for pressing the copper connector 232 is fixedly installed at the bottom of the screw 5, and a cross groove 5a is opened at the nut on the top of the screw 5.
[0034] It should be noted that: after the warning assembly 2 is installed into the wellhead 1 by using the fixing member 3, the wellhead cover 4 is covered on the wellhead 1 and screwed with the wellhead 1 thread, and then the screw 5 is screwed in by using a cross screwdriver so that the push rod 51 at the bottom of the screw 5 makes the copper contact piece 232 abut against the contact piece seat 231. At this time, the copper contact piece 232 is electrically connected with the contact piece seat 231 (the circuit diagram is shown in the attached figure). Fig. 9 As shown), at this time, the indicator light 23 is in working state, while the voice alarm 24 and the warning light 25 are not working;
[0035] When a thief unscrews the manhole cover 4 or rotates the screw 5, the push rod 51 no longer contacts the copper contact piece 232. Since the elastic V-shaped conductive piece 233 is an elastic structure, the copper contact piece 232 is disconnected from the contact piece seat 231 (see the circuit diagram attached). Fig.10 As shown), at this time, the indicator light 23, the voice alarm 24 and the warning light 25 are all in working state, and the voice alarm 24 and the warning light 25 can well deter thieves and prompt staff to check in time.
[0036] In the embodiments of the present invention, please refer to Figures 1 to 8 Two symmetrically distributed sleeves 26 are fixedly installed at the bottom of the mounting plate 21, and the mounting plate 21 is installed in the wellhead 1 through a fixing member 3 provided at the wellhead 1, and the fixing member 3 includes a waist-shaped plate 31, and two symmetrically distributed threaded rods 32 are fixedly installed on the waist-shaped plate 31, and the two threaded rods 32 pass through the mounting side holes 1a opened in the wellhead 1 and the two sleeves 26 at the bottom of the mounting plate 21, and nuts 33 are installed at the other ends of the two threaded rods 32, and a gasket 12 for supporting the mounting plate 21 is fixedly installed in the wellhead 1.
[0037] It should be noted that: when installing the warning assembly 2, place the mounting plate 21 from the wellhead 1 onto the gasket 12, and keep the two sleeves 26 corresponding to the mounting side holes 1a on both sides of the wellhead 1, and then pass the two threaded rods 32 on the waist plate 31 in sequence: the mounting side hole 1a on one side of the wellhead 1 → the two sleeves 26 at the bottom of the mounting plate 21 → the mounting side hole 1a on the other side of the wellhead 1, and then use the nuts 33 to fix it;
[0038] When disassembling the warning component 2, it is only necessary to unscrew the nut 33, pull out the threaded rod 32, and then take out the warning component 2. The operation is simple and convenient.
[0039] In the embodiments of the present invention, please refer to Figures 1 to 8 A clamping assembly 6 is provided at the bottom of the screw rod 5, and the clamping assembly 6 includes a rotating ring 61, and the rotating ring 61 is rotatably installed on the push rod 51, and a plurality of hinged push rods 62 are installed on the rotating ring 61, and the other end of each push rod 62 is hinged with a self-locking hook 63, and the connecting end of the self-locking hook 63 is hinged to the inner top wall of the manhole cover 4.
[0040] It should be noted that: when the screw 5 is screwed in so that the pushing rod 51 at the bottom of the screw 5 presses the copper contact piece 232 against the contact piece seat 231, the rotating ring 61 slides down along with the pushing rod 51. At the same time, the pushing rod 51 pushes the self-locking hook 63 to flip outward, driving the hook body of the self-locking hook 63 to engage with the inner wall of the wellhead 1, thereby increasing the difficulty of removing the manhole cover 4 from the wellhead 1.
[0041] The working principle of the oil wellhead anti-theft device provided by the utility model is as follows:
[0042] The warning component 2 is installed into the wellhead 1 by using the fixing member 3. Specifically, when installing the warning component 2, the mounting plate 21 is placed from the wellhead 1 onto the gasket 12, and the two sleeves 26 are kept corresponding to the mounting side holes 1a on both sides of the wellhead 1, and then the two threaded rods 32 on the waist plate 31 are passed through in sequence: the mounting side hole 1a on one side of the wellhead 1 → the two sleeves 26 at the bottom of the mounting plate 21 → the mounting side hole 1a on the other side of the wellhead 1, and then the nut 33 is used to fix it; and when disassembling the warning component 2, it is only necessary to unscrew the nut 33, pull out the threaded rod 32, and then take out the warning component 2, which is simple and convenient to operate;
[0043] After the warning assembly 2 is installed, the manhole cover 4 is covered on the manhole 1 and screwed with the thread of the manhole 1, and then the screw 5 is screwed in with a cross screwdriver so that the push rod 51 at the bottom of the screw 5 makes the copper contact piece 232 contact the contact piece seat 231. At this time, the copper contact piece 232 is electrically connected with the contact piece seat 231 (the circuit diagram is shown in the attached figure). Fig. 9As shown), at this time, the indicator light 23 is in working state, while the voice alarm 24 and the warning light 25 are not working. When the screw rod 5 is screwed in so that the push rod 51 at the bottom of the screw rod 5 pushes the copper contact piece 232 to contact the contact piece seat 231, the rotating ring 61 slides down along with the push rod 51. At the same time, the push rod 51 pushes the self-locking hook 63 to flip outward, driving the hook body of the self-locking hook 63 to engage with the inner wall of the wellhead 1, thereby increasing the difficulty of removing the manhole cover 4 from the wellhead 1;
[0044] When a thief unscrews the manhole cover 4 or rotates the screw 5, the push rod 51 no longer contacts the copper contact piece 232. Since the elastic V-shaped conductive piece 233 is an elastic structure, the copper contact piece 232 is disconnected from the contact piece seat 231 (see the circuit diagram attached). Fig.10 As shown), at this time, the indicator light 23, the voice alarm 24 and the warning light 25 are all in working state, and the voice alarm 24 and the warning light 25 can well deter thieves and prompt staff to check in time.
[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An oil wellhead anti-theft device, comprising a wellhead (1), wherein the wellhead (1) is provided with an external thread section (11), and symmetrically distributed installation side holes (1a) are provided on both sides of the wellhead (1) below the external thread section (11); It is characterized in that A detachable warning component (2) is installed in the wellhead (1), and the warning component (2) comprises a mounting plate (21), on which a power supply (22), an indicator light (23), a voice alarm (24), and a warning light (25) are fixedly installed, a wire connection end of the indicator light (23) is fixedly installed with an elastic V-shaped conductive sheet (233), and a copper contact sheet (232) is fixedly installed on the elastic V-shaped conductive sheet (233), and a contact sheet seat (231) arranged opposite to the copper contact sheet (232) is fixedly installed at the center of the mounting plate (21); The oil wellhead anti-theft device further comprises a wellhead cover (4), the wellhead cover (4) being covered on the wellhead (1) and being threadedly connected to the wellhead (1), and a threaded through hole (4a) being provided at the center of the wellhead cover (4), a threaded screw (5) being inserted into the threaded through hole (4a), and a push rod (51) for pressing the copper joint (232) being fixedly mounted at the bottom of the screw (5).
2. The oil wellhead anti-theft device according to claim 1, characterized in that: The power source (22) is electrically connected to the indicator light (23), the contact plate holder (231), the voice alarm (24), and the warning light (25) via wires.
3. The oil wellhead anti-theft device according to claim 1, characterized in that: Two symmetrically distributed sleeves (26) are fixedly mounted on the bottom of the mounting plate (21), and the mounting plate (21) is mounted in the wellhead (1) via a fixing member (3) provided at the wellhead (1).
4. The oil wellhead anti-theft device according to claim 3 is characterized in that: The fixing member (3) comprises a waist-shaped plate (31), on which two symmetrically distributed threaded rods (32) are fixedly mounted, and the two threaded rods (32) pass through mounting side holes (1a) provided at the wellhead (1) and two sleeve tubes (26) at the bottom of the mounting plate (21), and nuts (33) are mounted at the other ends of the two threaded rods (32).
5. The oil wellhead anti-theft device according to claim 1, characterized in that: A clamping assembly (6) is provided at the bottom of the screw rod (5), and the clamping assembly (6) comprises a rotating ring (61), the rotating ring (61) is rotatably mounted on the push rod (51), and a plurality of hinged push rods (62) are mounted on the rotating ring (61), and the other end of each push rod (62) is hingedly connected to a self-locking hook (63), and the connecting end of the self-locking hook (63) is hingedly connected to the inner top wall of the manhole cover (4).
6. The oil wellhead anti-theft device according to claim 5, characterized in that: The nut at the top of the screw rod (5) is provided with a cross groove (5a).
7. The oil wellhead anti-theft device according to claim 1, characterized in that: A gasket ring (12) for supporting the mounting plate (21) is fixedly installed in the wellhead (1).