Automatic alarm type polish rod anti-falling device

Abstract

An automatic alarm type polish rod anti-falling device relates to the technical field of petroleum equipment and comprises a shell, a composite rubber shock absorber, a rubber pad, a shell base, an upper gland, a tooth block base, a tooth block, a tooth block locking cap and an alarm, the shell is arranged on the shell base, the tooth block locking cap, the tooth block base and the composite rubber shock absorber are sequentially sleeved in the shell from top to bottom, and the alarm is arranged on the shell base. A tooth block is sleeved with the tooth block base, a rubber pad is arranged in the tooth block, the shell is connected with an upper gland through threads, a handle is arranged on the outer wall of the upper gland, and the handle is connected with an alarm through a lead. The automatic alarm type polish rod anti-falling device not only solves the problem of environmental protection, but also can avoid cost and delay of oil well yield caused by well repair, and also can avoid other losses caused by imbalance of an oil pumping unit.

Description

Technical field:

[0001] The invention relates to the technical field of petroleum equipment, in particular to an automatic alarm type bare rod anti-drop device. Background technology:

[0002] During the production process of the pumping well, due to the well depth or the large pump diameter or the rapid stroke, the load on the polished rod is too large, which can easily cause the polished rod to break. The polished rod breaking not only causes environmental pollution at the well site, but also easily causes underground accidents such as oil pipe breaking. The oil pipe and the pumping rod will be bent after breaking, causing great losses to the oil field. Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an automatic alarm type rod-off prevention device, which has a simple structure and strong applicability. It can not only prevent the rod from falling into the well, but also prevent the oil pipe from being broken and falling into the well. An alarm notification can be received about 5 seconds after the rod is broken. It not only solves the environmental protection problem, but also avoids the cost of well repair and the delay of oil well production, and can also avoid other losses caused by the imbalance of the pumping unit.

[0004] In order to solve the problems existing in the background technology, the present invention adopts the following technical scheme: it includes a shell, a composite rubber shock absorber, a rubber pad, a shell base, an upper pressure cover, a tooth block base, a tooth block, a tooth block locking cap and an alarm, the outer wall of the top end of the shell is provided with an external thread one, the bottom of the shell sits on the shell base and is welded to the shell base, the lower part of the shell is sleeved with a composite rubber shock absorber, the bottom of the composite rubber shock absorber sits on the shell base, the top of the composite rubber shock absorber sits with a tooth block base, the upper outer wall of the tooth block base is provided with an external thread two, and the inner cavity of the tooth block base It is conical, and a tooth block is sleeved inside the tooth block base. The tooth block has a conical shape, and the inner wall of the tooth block is stepped. A rubber pad is sleeved inside the tooth block, and the outer wall of the rubber pad is stepped and connected with the inner cavity of the tooth block. A tooth block locking cap is provided on the top of the tooth block, and two internal threads are provided on the inner wall of the tooth block locking cap, and the two internal threads are threadedly connected with the two external threads. An upper pressure cover is provided on the top of the tooth block locking cap, and one internal thread is provided on the inner wall of the upper pressure cover, and the one internal thread is threadedly connected with the one external thread; a handle is symmetrically welded on the outer wall of the upper pressure cover, and a lead wire is wrapped around the handle, and the lead wire is connected to the alarm, and the alarm is installed on the suspension rope.

[0005] A protrusion is provided at the bottom of the inner wall of the shell.

[0006] A cavity is formed between the outer wall of the composite rubber shock absorber and the inner wall of the shell.

[0007] The diameter of the top end port of the inner wall of the tooth block base is d1, and the diameter of the bottom end port of the inner wall of the tooth block base is d2, and d2 is smaller than d1.

[0008] The tooth block is formed by splicing three equal arc-shaped tooth petals, which are conical after splicing. The top diameter of the outer wall after splicing is d3, the bottom diameter of the outer wall is d6, and d6 is smaller than d3. The top diameter of the inner wall after splicing is d4 and the bottom diameter of the inner wall is d5, and d5 is smaller than d4.

[0009] The rubber pad is formed by splicing three equal arc-shaped rubber pads. After splicing, the diameter of the top end of the outer wall is d8, and the diameter of the bottom end of the outer wall is d7, d7 is smaller than d8, the number of arc-shaped rubber pads and arc-shaped tooth petals is equal and they are connected one-to-one, and the outer wall of the arc-shaped rubber pad is adhered to the inner wall of the arc-shaped tooth petal.

[0010] The top and bottom ends of the inner wall of the composite rubber shock absorber are both provided with protrusions 2, which are tightly connected to the polished rod, and a shock-absorbing air bag is formed between the inner wall of the composite rubber shock absorber and the outer wall of the polished rod.

[0011] The center of the whole formed by the shell, the composite rubber shock absorber, the rubber pad, the shell base, the upper pressure cover, the tooth block base, the tooth block and the tooth block locking cap passes through the polished rod.

[0012] The alarm is a waterproof anti-theft alarm that can be remotely connected to a mobile phone outdoors to automatically make calls and strengthen signals outdoors.

[0013] The composite rubber shock absorber is rubber, spring or disc spring.

[0014] The beneficial effects of the present invention are:

[0015] 1. Simple structure, small size and easy operation;

[0016] 2. No damage to the bare rod, with rubber pads for protection;

[0017] 3. After the bare rod breaks, you can receive an alarm prompt immediately to avoid greater losses;

[0018] 4. It avoids the damage of the bare rod to the bare rod by the anti-drop clip;

[0019] 5. During installation, tighten the tooth block locking cap and the tooth block base with a pipe clamp, and the clamping force on the polished rod will be automatically generated immediately. Description of the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the shell structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the composite rubber shock absorber of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the rubber pad of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the housing base of the present invention;

[0025] Figure 6 It is a schematic diagram of the upper gland structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the tooth block base of the present invention;

[0027] Figure 8 It is a schematic diagram of the tooth block structure of the present invention;

[0028] Fig. 9 This is a diagram showing the connection between the tooth block and the rubber pad of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the tooth block locking cap of the present invention;

[0030] Fig.11 It is a top view of the tooth block locking cap of the present invention. Specific implementation method:

[0031] With reference to the figures, the present invention specifically adopts the following implementation mode: it includes a shell 1, a composite rubber shock absorber 2, a rubber pad 3, a shell base 4, an upper pressure cover 5, a tooth block base 6, a tooth block 7, a tooth block locking cap 8 and an alarm 20, the outer wall of the top end of the shell 1 is provided with an external thread 9, the bottom of the shell 1 sits on the shell base 4 and is welded to the shell base 4, the lower part of the shell 1 is sleeved with a composite rubber shock absorber 2, the bottom of the composite rubber shock absorber 2 sits on the shell base 4, the top of the composite rubber shock absorber 2 sits with a tooth block base 6, the upper outer wall of the tooth block base 6 is provided with an external thread 14, the inner cavity of the tooth block base 6 is conical, and the inner sleeve of the tooth block base 6 There is a tooth block 7, the tooth block 7 is conical in shape, the inner wall of the tooth block 7 is stepped, the tooth block 7 is covered with a rubber pad 3, the outer wall of the rubber pad 3 is stepped and connected with the inner cavity of the tooth block 7, the top of the tooth block 7 is provided with a tooth block locking cap 8, the inner wall of the tooth block locking cap 8 is provided with an internal thread 17, the internal thread 17 is threadedly connected with the external thread 14, the top of the tooth block locking cap 8 is provided with an upper pressure cover 5, the inner wall of the upper pressure cover 5 is provided with an internal thread 13, the internal thread 13 is threadedly connected with the external thread 9; the outer wall of the upper pressure cover 5 is symmetrically welded with a handle 18, the handle 8 is wound with a lead 19, the lead 19 is connected with an alarm 20, and the alarm 20 is installed on the suspension rope. The bottom of the inner wall of the shell 1 is provided with a protrusion 10. A cavity 21 is formed between the outer wall of the composite rubber shock absorber 2 and the inner wall of the shell 1. The diameter of the top end port of the inner wall of the tooth block base 6 is d1, and the diameter of the bottom end port of the inner wall of the tooth block base 6 is d2, and d2 is smaller than d1. The tooth block 7 is formed by splicing three equal arc-shaped tooth petals 15, which are conical after splicing. The top end diameter of the outer wall after splicing is d3, and the bottom end diameter of the outer wall is d6, and d6 is smaller than d3. The top end diameter of the inner wall after splicing is d4 and the bottom end diameter of the inner wall is d5, and d5 is smaller than d4. The rubber pad 3 is formed by splicing three equal arc-shaped rubber pads 16. The top end diameter of the outer wall after splicing is d8, and the bottom end diameter of the outer wall is d7, and d7 is smaller than d8. The number of arc-shaped rubber pads 16 and arc-shaped tooth petals 15 is equal and they are connected in a one-to-one matching manner. The outer wall of the arc-shaped rubber pad 16 is adhered to the inner wall of the arc-shaped tooth petal 15. The top and bottom of the inner wall of the composite rubber shock absorber 2 are both provided with protrusions 11, which are tightly connected to the light rod 12, and a shock-absorbing airbag 22 is formed between the inner wall of the composite rubber shock absorber 2 and the outer wall of the light rod 12. The shell 1, the composite rubber shock absorber 2, the rubber pad 3, the shell base 4, the upper pressure cover 5, the tooth block base 6, the tooth block 7 and the tooth block locking cap 8 are composed to form an integral center that passes through the light rod 12. The alarm 20 is an outdoor remote connection mobile phone automatic call outdoor signal strengthening waterproof anti-theft alarm. The composite rubber shock absorber 2 is rubber, spring or disc spring.

[0032] First, weld the shell 1 and the shell base 4 into a whole, the composite rubber shock absorber 2 sits on the shell base 4, and the bottom of the composite rubber shock absorber 2 is stuck in the protrusion 10. The protrusion 10 plays a role of limiting and fixing the composite rubber shock absorber 2 to ensure that a cavity 21 is formed between the composite rubber shock absorber 2 and the inner wall of the shell 1. The upper part of the composite rubber shock absorber 2 is provided with a pressure block base 6. This whole is inserted into the outer wall of the polished rod 12, and the best position is selected. The spliced ​​tooth block 7 and the rubber pad 3 are installed in the tooth block base 6. Through the external thread 14 and the internal thread 17, the tooth block locking cap 8 is screwed, and the pressure block locking cap 8 is lowered to press the tooth block 7. And rubber pad 3, since the tooth block base 6 is conical, d1 is greater than d2, the tooth block 7 and the rubber pad 3 become narrower as they go down, and the tooth block 7 and the rubber pad 3 shrink. When the tooth block 7 and the rubber pad 3 tightly hold the light rod 12, the tooth block locking cap 8 is no longer screwed, and finally the upper pressure cover 5 is screwed through the external thread 9 and the internal thread 13 to fix the upper pressure cover 5 to the housing 1. The protrusions 11 on the upper and lower inner walls of the composite rubber shock absorber 2 are tightly connected to the light rod 12. A pair of handles 18 are provided on the outer wall of the upper pressure cover 5. The handles 18 are symmetrically arranged. The handles 18 are connected to the alarm 20 through the lead 19. The alarm 20 is fixed on the rope hanger, and the installation is completed at this time.

[0033] The center of the whole formed by the shell 1, the composite rubber shock absorber 2, the rubber pad 3, the shell base 4, the upper pressure cover 5, the tooth block base 6, the tooth block 7 and the tooth block locking cap 8 passes through the polished rod 12 and forms a whole with the polished rod 12.

[0034] The tooth block 7 is spliced ​​into a cone through three equal arc-shaped tooth petals 15. First, for easy installation, the tooth block 7 is placed on the tooth block base 6; second, there is a gap between the three arc-shaped tooth petals 15. During the descent process, as the inner cavity of the tooth block base 6 becomes narrower and narrower, the three arc-shaped tooth plates 15 squeeze each other and can firmly hold the polished rod 12. The rubber pad 3 is bonded inside the tooth block 7, and the rubber pad 3 increases the friction between the polished rod 12 and facilitates subsequent work.

[0035] The inner cavity of the tooth block 7 is stepped, and the corresponding outer wall of the rubber pad 3 is stepped, which increases the contact area between the tooth block 7 and the rubber pad 3 and makes the tooth block 7 and the rubber pad 3 adhere better.

[0036] When the oil pump is working, when the light rod 12 breaks off, the light rod 12 and the whole formed by it descend together, which can also be understood as the light rod 12 driving the tooth block 7 downward. At the moment when the shell 1 contacts the blowout preventer box, under the action of the friction between the light rod 12 and the rubber pad 3, the rubber pad 3 has a downward movement trend, and the inclined surface of the rubber pad 3 and the inclined surface of the tooth block automatically generate expansion force (d4 of the tooth block 7 is greater than d5, and the inner cavity of the tooth block 7 becomes narrower and narrower from top to bottom. When the rubber pad 3 descends, the narrow part of the bottom end of the tooth block 7 tightens the rubber pad 3). At the same time, the tooth block 7 and the tooth block base 6 also generate expansion force (d1 of the tooth block base 6 is greater than d2, and the inner cavity of the tooth block base 6 becomes narrower and narrower from top to bottom. When the tooth block 7 descends, the narrow part of the bottom end of the tooth block base 6 tightens the tooth block). Under the action of the two expansion forces, the tooth block 7 quickly holds the light rod 12. Since the protrusions 11 at the upper and lower ends of the inner wall of the composite rubber shock absorber 2 and the polished rod 12 are in a sealed state, the inner wall of the composite rubber shock absorber 2 and the outer wall of the polished rod 12 form a shock-absorbing airbag 22 and a shock-absorbing rubber stop. Not only will the polished rod 12 not fall into the well, but it will also not damage the wellhead, and it can also reduce the downward force of the sucker rod on the oil pump. After the polished rod 12 is broken off, the lead wire 19 wound on the handle 18 is separated from the alarm 20. After the lead wire 19 is separated from the alarm 20, a phone call and text message alarm can be sent to the corresponding staff in about 5 seconds.

[0037] After the bare rod 12 is broken off, during the downward process, the composite rubber shock absorber 2 will also be impacted downward and expand. The cavity 21 is used to allow the composite rubber shock absorber 2 to expand. After expansion, it touches the inner wall of the shell 1 and rebounds to restore its original state.

[0038] Alarm 20 is existing technology and was purchased from Taobao. It is ByRuniot's 2023 new alarm. Each alarm is attached with a QR code. The staff scans the code with their mobile phones and installs the APP. Each alarm corresponds to a well. The staff can quickly know which well has the broken rod 12 through text messages and alarms.

[0039] To sum up, the automatic alarm type light rod anti-drop device has a simple structure, small size and easy operation; it does not harm the light rod and is protected by a rubber pad; an alarm prompt can be received immediately after the light rod breaks off, which can avoid greater losses; it avoids the damage of the light rod by the light rod anti-drop clip; during installation, the tooth block locking cap and the tooth block base can be tightened with a pipe clamp, and the clamping force on the light rod is automatically generated instantly.

Claims

1. An automatic alarm type light rod anti-drop device, characterized in that: The invention comprises a shell (1), a composite rubber shock absorber (2), a rubber pad (3), a shell base (4), an upper pressure cover (5), a tooth block base (6), a tooth block (7), a tooth block locking cap (8) and an alarm (20), wherein the top outer wall of the shell (1) is provided with an external thread (9), the bottom of the shell (1) is seated on the shell base (4) and welded to the shell base (4), the lower part of the shell (1) is sleeved with a composite rubber shock absorber (2), the bottom of the composite rubber shock absorber (2) is seated on the shell base (4), the top of the composite rubber shock absorber (2) is seated with a tooth block base (6), the upper outer wall of the tooth block base (6) is provided with an external thread (14), the inner cavity of the tooth block base (6) is conical, the tooth block base (6) is sleeved with a tooth block (7), the tooth block (7) ) is conical in shape, the inner wall of the tooth block (7) is stepped, a rubber pad (3) is sleeved inside the tooth block (7), the outer wall of the rubber pad (3) is stepped and connected to the inner cavity of the tooth block (7), a tooth block locking cap (8) is provided on the top of the tooth block (7), the inner wall of the tooth block locking cap (8) is provided with two internal threads (17), the two internal threads (17) are threadedly connected with two external threads (14), an upper pressure cover (5) is provided on the top of the tooth block locking cap (8), the inner wall of the upper pressure cover (5) is provided with one internal thread (13), the one internal thread (13) is threadedly connected with one external thread (9); a handle (18) is symmetrically welded on the outer wall of the upper pressure cover (5), a lead wire (19) is wound on the handle (8), the lead wire (19) is connected with an alarm (20), and the alarm (20) is installed on the suspension rope.

2. The automatic alarm type bare rod anti-drop device according to claim 1 is characterized in that: A protrusion (10) is provided at the bottom of the inner wall of the shell (1).

3. The automatic alarm type bare rod anti-drop device according to claim 1 is characterized in that: A cavity (21) is formed between the outer wall of the composite rubber shock absorber (2) and the inner wall of the housing (1).

4. The automatic alarm type bare rod anti-drop device according to claim 1 is characterized in that: The diameter of the top end port of the inner wall of the tooth block base (6) is d1, and the diameter of the bottom end port of the inner wall of the tooth block base (6) is d2, and d2 is smaller than d1.

5. The automatic alarm type bare rod anti-drop device according to claim 1 is characterized in that: The tooth block (7) is formed by splicing three equal arc-shaped tooth petals (15) and is conical after splicing. The diameter of the top end of the outer wall is d3 and the diameter of the bottom end of the outer wall is d6, which is smaller than d3. The diameter of the top end of the inner wall is d4 and the diameter of the bottom end of the inner wall is d5, which is smaller than d4.

6. The automatic alarm type bare rod anti-drop device according to claim 1 or 5, characterized in that: The rubber pad (3) is formed by splicing three equal arc-shaped rubber pads (16). After splicing, the diameter of the top end of the outer wall is d8, and the diameter of the bottom end of the outer wall is d7, d7 is smaller than d8, the number of the arc-shaped rubber pads (16) and the arc-shaped tooth flaps (15) are equal and they are connected in a one-to-one matching manner, and the outer wall of the arc-shaped rubber pad (16) is bonded to the inner wall of the arc-shaped tooth flap (15).

7. The automatic alarm type bare rod anti-drop device according to claim 1 is characterized in that: The top and bottom ends of the inner wall of the composite rubber shock absorber (2) are both provided with protrusions (11), which are tightly connected to the polished rod (12), and a shock-absorbing air bag (22) is formed between the inner wall of the composite rubber shock absorber (2) and the outer wall of the polished rod (12).

8. The automatic alarm type bare rod anti-drop device according to claim 1 is characterized in that: The center of the whole formed by the shell (1), the composite rubber shock absorber (2), the rubber pad (3), the shell base (4), the upper pressure cover (5), the tooth block base (6), the tooth block (7) and the tooth block locking cap (8) passes through the polished rod (12).

9. The automatic alarm type bare rod anti-drop device according to claim 1, characterized in that: The alarm (20) is a waterproof anti-theft alarm that can be remotely connected to a mobile phone outdoors to automatically make calls and strengthen signals outdoors.

10. The automatic alarm type bare rod anti-drop device according to claim 1, characterized in that: The composite rubber shock absorber (2) is made of rubber, a spring or a disc spring.

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