Joined tooth-shaped narrow V-shaped belt for oil pumping unit in oil field

Abstract

The utility model relates to a combined tooth-shaped narrow V-belt for an oil pumping unit in an oil field, which comprises a connecting layer and a plurality of V-belts, the plurality of V-belts are arranged on the bottom surface of the connecting layer, the connecting layer comprises top cloth and a surface adhesive layer, the top cloth covers the upper layer of the surface adhesive layer, and each V-belt comprises a framework layer, a bottom adhesive layer and elastic cloth, the framework layer is arranged between the surface rubber layer and the bottom rubber layer, a layer of buffer rubber is arranged between the framework layer and the surface rubber layer, a layer of buffer rubber is arranged between the framework layer and the bottom rubber layer, the bonding strength and the anti-pull-off strength of the V belt are improved through the arrangement of the buffer rubber, and the V belt has the effect of prolonging the service life of the V belt.

Description

Technical Field

[0001] This application relates to the technical field of V-belts, and in particular to a jointed toothed narrow V-belt for oilfield pumping units. Background Art

[0002] A V-belt is a unique conveyor belt, a mechanical device for transmitting force and transporting goods. The transmission of an oilfield pumping unit is completed by the V-belt transmission.

[0003] However, with the increasing difficulty of oil extraction, the depth of underground crude oil is getting deeper and the viscosity is getting higher. The operating load of the pumping unit is getting larger, and there will be a sudden increase in the impact load during operation. Therefore, the requirement for the impact resistance of the V-belt is getting higher and higher. Most of the existing V-belts for pumping units are not impact-resistant and have low strength. After being used for a period of time, the belt body is prone to splitting, often splitting into two single V-belts, and new V-belts need to be replaced. The overall life of the V-belt is low, and there are obvious deficiencies. Summary of the Utility Model

[0004] In order to improve the service life of the V-belt, this application provides a jointed toothed narrow V-belt for oilfield pumping units.

[0005] The jointed toothed narrow V-belt for oilfield pumping units provided by this application adopts the following technical solutions:

[0006] A jointed toothed narrow V-belt for oilfield pumping units includes a belt body. The belt body includes a connecting layer and a plurality of V-belts. The plurality of V-belts are arranged on the bottom surface of the connecting layer. The connecting layer includes a top cloth and a surface rubber layer. The top cloth covers the upper layer of the surface rubber layer. The V-belt includes a carcass layer, a bottom rubber layer and an elastic cloth. The carcass layer is arranged between the surface rubber layer and the bottom rubber layer. A layer of buffer rubber is provided between the carcass layer and the surface rubber layer and between the carcass layer and the bottom rubber layer.

[0007] By adopting the above technical solutions, the connecting layer connects the plurality of V-belts into a whole, improving the stability and strength of each V-belt. The setting of the buffer rubber improves the bonding strength and anti-pulling strength of the V-belt, greatly reducing the possibility of a single V-belt separating from the connecting layer and reducing the splitting of the V-belt when subjected to an impact load, further improving the service life of the V-belt.

[0008] Optionally, the surface rubber layer and the bottom rubber layer are aramid fiber rubber layers.

[0009] By adopting the above technical solutions, the aramid fiber rubber layer has excellent wear resistance and load resistance, which can protect the surface of the V-belt body, improve the wear resistance and scratch resistance of the V-belt body, and thus improve the service life of the V-belt.

[0010] Optionally, the skeleton layer includes a plurality of core wires arranged uniformly, and the plurality of core wires are all aramid ropes.

[0011] By adopting the above technical solution, the skeleton layer is formed by winding aramid ropes side by side, which improves the tensile strength and tear resistance of the V-belt body, reduces the bending stress generated during the use of the belt body, thereby reducing the phenomenon of cracks appearing inside the belt body, and further increasing the service life of the V-belt.

[0012] Optionally, a plurality of arc-shaped tooth grooves are uniformly formed at the bottom of the V-belt, and the arc-shaped tooth grooves are distributed along the length direction of the V-belt.

[0013] By adopting the above technical solution, the setting of the arc-shaped tooth grooves can not only improve the overall anti-bending performance of the V-belt, but also increase the heat dissipation area of the V-belt, further improving the service life of the V-belt.

[0014] Optionally, the two side surfaces of the belt body perpendicular to the length direction of the V-belt are made of rubber material.

[0015] By adopting the above technical solution, compared with the traditional use of a fabric surface as the working surface, the friction between the rubber and the pulley is higher than that between the fabric and the pulley. Therefore, the transmission capacity is higher, reducing the possibility of the V-belt breaking when facing an instantaneous impact load.

[0016] Optionally, a plurality of corrugations are uniformly distributed on the two side surfaces of the belt body perpendicular to the length direction of the V-belt, and the direction of the corrugations is perpendicular to the length direction of the V-belt.

[0017] By adopting the above technical solution, the setting of the corrugations can increase the friction between the V-belt and the pulley, reducing the occurrence of slipping during the operation of the V-belt. At the same time, with the corrugations protruding, the base surface of the V-belt is only reached when the corrugations are worn flat, greatly extending the service life of the V-belt.

[0018] Optionally, a wear-resistant coating is provided on the outer side surface of the corrugation.

[0019] By adopting the above technical solution, the wear-resistant coating further improves the wear resistance of the V-belt. The wear-resistant coating is in direct contact with the pulley. If abrasion occurs, only the wear-resistant coating needs to be replenished in time, thereby improving the service life of the V-belt.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. By providing a buffer rubber in the embodiment of the present application, the setting of the buffer rubber improves the bonding strength and anti-pull-off strength of the V-belt, greatly reducing the possibility of a single V-belt separating from the connection layer, reducing the situation of the V-belt splitting when suffering an impact load, and further improving the service life of the V-belt;

[0022] 2. In the embodiment of the present application, by providing an arc-shaped tooth groove, the arc-shaped tooth groove can improve the bending resistance of the V-belt when it is subjected to impact loads, and at the same time increase the heat dissipation area during the operation of the V-belt, improve the heat dissipation efficiency between the V-belt and the pulley, and further improve the service life of the V-belt. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present application.

[0024] Figure 2 It is a schematic structural diagram of the connection layer and the V-belt in the embodiment of the present application.

[0025] Description of the reference numerals: 1, belt body; 2, connection layer; 21, top cloth; 22, surface rubber layer; 3, V-belt; 31, carcass layer; 311, core wire; 32, bottom rubber layer; 33, elastic cloth; 4, buffer rubber; 5, arc-shaped tooth groove; 6, rubber layer; 7, corrugation. Detailed Embodiments

[0026] The following will Figure 1-2 further describe the present application in detail with reference to the attached

[0027] The embodiment of the present application discloses a joined-tooth narrow V-belt for an oilfield pumping unit.

[0028] Referring to Figure 1 and Figure 2 , a joined-tooth narrow V-belt for an oilfield pumping unit includes a belt body 1. The belt body 1 includes a connection layer 2 and a plurality of V-belts 3. The plurality of V-belts 3 are connected to the bottom surface of the connection layer 2. The connection layer 2 includes a top cloth 21 and a surface rubber layer 22. The top cloth 21 covers the surface rubber layer 22. The surface rubber layer 22 is an aramid fiber rubber layer with excellent wear resistance and load-bearing performance. The top cloth 21 can protect the surface of the V-belt 3, improve the overall wear resistance and scratch resistance of the belt body 1, and thus improve the overall service life of the belt body 1;

[0029] The plurality of V-belts 3 are arranged below the surface rubber layer 22. The V-belt 3 includes a carcass layer 31 arranged below the surface rubber layer 22. The carcass layer 31 includes a plurality of core wires 311 wound side by side. The core wires 311 are aramid ropes. The arrangement of the carcass layer 31 improves the overall tensile strength and tear resistance of the belt body 1, reduces the bending stress generated in the overall use process of the belt body 1, and thus reduces the phenomenon of cracks appearing inside the overall belt body 1, and further increases the overall service life of the belt body 1;

[0030] A base glue layer 32 is provided below the skeleton layer 31. The base glue layer 32 is an aramid fiber glue layer. A stretch fabric 33 is provided below the base glue layer 32. The stretch fabric 33 covers the lower surface of the base glue layer 32. Buffer glue 4 is connected between the skeleton layer 31 and the surface glue layer 22 and between the skeleton layer 31 and the base glue layer 32. The setting of the buffer glue 4 improves the bonding strength and anti-pulling strength of the V-belt 3, greatly reducing the possibility of a single V-belt 3 separating from the connection layer 2, reducing the situation where the entire belt body 1 splits when subjected to an impact load, and further improving the overall service life of the belt body 1.

[0031] A plurality of arc-shaped tooth grooves 5 are evenly opened on the bottom surface of the V-belt 3. The plurality of arc-shaped tooth grooves 5 are distributed along the length direction of the V-belt 3. The arc-shaped tooth grooves 5 can improve the anti-bending performance of the V-belt 3 when subjected to an impact load, and at the same time increase the heat dissipation area of the entire belt body 1 during the working process, improving the heat dissipation efficiency between the entire belt body 1 and the pulley, and further improving the overall service life of the belt body 1.

[0032] Refer to Figure 1 and Figure 2 On both sides of the V-belt, rubber layers 6 are provided. In this embodiment, the rubber layer 6 is made of chloroprene rubber. The rubber layer 6 is distributed along the length direction of the V-belt 3. The two side surfaces perpendicular to the length direction of the V-belt 3 are the working surfaces where the belt body 1 contacts the pulley. Compared with the traditional use of a fabric surface as the working surface, the friction between the rubber and the pulley is higher than that between the fabric and the pulley. Therefore, the transmission capacity is higher, reducing the possibility of the entire belt body 1 breaking when facing an instantaneous impact load.

[0033] A plurality of corrugations 7 are evenly distributed on the surface of the rubber layer 6. The corrugations 7 protrude on the surface of the rubber layer 6. The setting direction of the corrugations 7 is perpendicular to the length direction of the V-belt 3. A wear-resistant coating is provided on the outer side surface of the corrugations 7. In this embodiment, the wear-resistant coating is polytetrafluoroethylene.

[0034] The setting of the corrugations 7 can increase the friction between the entire belt body 1 and the pulley, reducing the occurrence of slipping during the working process of the entire belt body 1. At the same time, the corrugations 7 protrude. When the corrugations 7 are worn flat, it reaches the base surface of the V-belt 3, greatly extending the overall service life of the belt body 1. The wear-resistant coating further improves the wear resistance of the V-belt 3. The wear-resistant coating is in direct contact with the pulley. If wear occurs, only the wear-resistant coating needs to be replenished in time, thereby improving the overall service life of the belt body 1.

[0035] The implementation principle of a multiple V-belt for an oilfield pumping unit in an embodiment of this application is as follows: A plurality of V-belts 3 form the overall belt body 1 through a connecting layer 2. The carcass layer 31 is formed by winding core wires 311, which increases the tensile resistance of the overall structure of the belt body 1. At the same time, the setting of the buffer rubber 4 improves the bonding strength and anti-pull-off strength of the overall belt body 1, greatly reducing the possibility of a single V-belt 3 separating from the connecting layer 2, reducing the splitting of the overall belt body 1 when subjected to impact loads, and further improving the service life of the overall belt body 1.

[0036] The above are all preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A multiple V-ribbed narrow V-belt for an oilfield pumping unit, comprising a belt body (1), the belt body (1) including a connecting layer (2) and a plurality of V-belts (3), the plurality of V-belts (3) being arranged on the bottom surface of the connecting layer (2), characterized in that, The connection layer (2) includes a top cloth (21) and a surface adhesive layer (22). The top cloth (21) covers the upper layer of the surface adhesive layer (22). The V-belt (3) includes a carcass layer (31), a bottom adhesive layer (32), and an elastic cloth (33). The carcass layer (31) is disposed between the surface adhesive layer (22) and the bottom adhesive layer (32). A layer of buffer rubber (4) is provided between the carcass layer (31) and the surface adhesive layer (22), and between the carcass layer (31) and the bottom adhesive layer (32). The carcass layer (31) includes a plurality of core wires (311) arranged at uniform intervals. All of the plurality of core wires (311) are aramid ropes. Rubber layers (6) are provided on the sides of the V-belt (3). The rubber layers (6) are distributed along the length direction of the V-belt (3). A plurality of corrugations (7) are uniformly distributed on the rubber layers (6). The plurality of corrugations (7) are distributed along the length direction of the V-belt (3). A wear-resistant coating is provided on the outer side surface of the corrugation (7).

2. The joined V-belt with toothed profile for oil field pumping unit according to claim 1, characterized in that, Both the surface adhesive layer (22) and the bottom adhesive layer (32) are aramid fiber adhesive layers.

3. A jointed toothed narrow V-belt for an oilfield pumping unit according to claim 1, characterized in that, A plurality of arc-shaped tooth grooves (5) are uniformly formed at the bottom of the V-belt (3). The arc-shaped tooth grooves (5) are distributed along the length direction of the V-belt (3).

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