High-wear-resistance pumping unit packing

Abstract

The utility model discloses a pumping unit packing with high wear resistance, which relates to the technical field of packing, and comprises a packing body, a positioning ring, a high temperature resistant layer and a wear resistant layer, the outer wall of the positioning ring is provided with a positioning screw groove, the outer wall of the packing body is provided with a plurality of groups of channels, the inner wall of each channel is provided with a positioning screw rod, and the wear resistant layer is arranged on the positioning screw groove. A high-temperature-resistant layer is installed on the outer wall of the positioning ring, a rubber body is arranged on the outer wall of the high-temperature-resistant layer, and a wear-resistant layer is installed on the outer wall of the rubber body. The high-temperature-resistant layer and the wear-resistant layer are fixed together by installing the multi-layer mechanism, then the positioning ring is moved into the packing body, the positioning screws are fixed into the positioning screw grooves through the channels, and the high-temperature-resistant layer and the wear-resistant layer are installed in the packing body, so that the high-temperature-resistant performance and the wear-resistant performance of the packing body are improved; the design is similar to firefighter protective clothing, the outer layer is flame-retardant and wear-resistant (the wear-resistant layer), the inner layer is heat-insulating (the high-temperature-resistant layer), and the two layers have a synergistic guarantee function.

Description

Technical Field

[0001] This utility model relates to the field of packing technology, specifically a high wear-resistant oil pumping unit packing. Background Technology

[0002] A pumping unit is a machine that extracts crude oil from an oil well. High-wear-resistant pumping unit packing usually refers to the sealing material installed between the polished rod of the pumping unit and the packing box at the wellhead. This material is used to prevent the mixture of oil, gas, and water from leaking out of the wellhead during the reciprocating motion of the polished rod. Due to the intense friction between the polished rod and the packing, the packing needs to have high wear resistance to reduce wear and extend the maintenance cycle. The packing is usually made of rubber.

[0003] Patent document CN220667501U discloses a novel packing for an oil pumping unit. It describes a structure comprising a ring body and a groove, the groove being located at the bottom of the ring body and being annular in shape. The packing mechanism also includes a packing mechanism and a support mechanism. The packing mechanism is located outside the ring body and includes a limiting strip, a support ring, a packing body, a limiting groove, and a retaining groove. The support ring is located at the middle section of the outer side of the ring body, and the limiting strip is located on the support ring, with limiting strips on both the top and bottom. The packing body adopts a semi-circular ring structure, and the packing body and the support ring are slidably connected. The retaining groove is located at the slidable connection between the support ring and the packing body. This utility model belongs to the field of oil pumping unit technology, specifically referring to a novel packing for an oil pumping unit.

[0004] However, the aforementioned novel packing for pumping units mainly addresses the issue that the inner ring of the packing is easily compressed during use, leading to cracking or expansion, which makes it difficult to improve the high-temperature resistance and wear resistance of the packing body.

[0005] Therefore, it is necessary to develop a multi-layered structure to improve the high-temperature resistance and wear resistance of the substrate. Utility Model Content

[0006] The purpose of this invention is to provide a high wear-resistant pumping unit packing to solve the technical problem of improving the performance of high wear-resistant pumping unit packing mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high wear-resistant pumping unit packing, comprising: a packing body, wherein the inner wall of the packing body is provided with a multi-layer structure, the multi-layer structure being used to improve the high temperature resistance and wear resistance of the packing body;

[0008] The multi-layer structure includes a positioning ring, a high-temperature resistant layer, and a wear-resistant layer. The positioning ring is located inside the disk body. The outer wall of the positioning ring is provided with a positioning screw groove. The outer wall of the disk body is provided with multiple sets of channels. The inner wall of the channels is provided with positioning screws, and one end of the positioning screws extends into the interior of the positioning screw grooves. The outer wall of the positioning ring is fitted with a high-temperature resistant layer. The outer wall of the high-temperature resistant layer is provided with a colloid. The outer wall of the colloid is fitted with a wear-resistant layer.

[0009] Preferably, the bottom of the substrate is provided with a dustproof mechanism, which is used to block external dust.

[0010] Preferably, the dustproof mechanism includes mounting screw grooves and a dust cover, and mounting screw grooves are provided at the top and bottom of the substrate.

[0011] Preferably, the inner wall of the mounting screw groove is provided with a mounting screw, and the dust cover is located on top of the mounting screw.

[0012] Preferably, the outer wall of the dust cover is fitted with a first Velcro strap.

[0013] Preferably, the outer wall of the first hook and loop fastener is provided with an adsorption layer.

[0014] Preferably, a second Velcro strap is installed at the bottom of the adsorption layer.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model improves the high temperature resistance and wear resistance of the substrate by installing a multi-layer mechanism. First, an adhesive is applied to the outside of the high temperature resistant layer. Then, the wear-resistant layer is brought into contact with the adhesive, thus fixing the high temperature resistant layer and the wear-resistant layer together. Next, the positioning ring is moved into the substrate, and then multiple sets of positioning screws are fixed into the positioning screw grooves through channels, thus installing the high temperature resistant layer and the wear-resistant layer in the substrate, thereby improving the high temperature resistance and wear resistance of the substrate. This design is similar to firefighter protective clothing, with an outer flame-retardant and wear-resistant layer (wear-resistant layer) and an inner heat-insulating layer (high temperature resistant layer), the two working together to protect the function.

[0017] 2. This utility model incorporates a dustproof mechanism to block external dust. When the substrate is not in use, dust often enters and accumulates on the wear-resistant layer, increasing wear on the substrate and the polished rod. Therefore, this needs improvement. Firstly, when the substrate is not in use, one end of the mounting screw is positioned in the mounting screw groove and rotated until the dust cover covers the top and bottom of the substrate. Then, the second Velcro attaches to the first Velcro, thus installing the adsorption layer on the outside of the dust cover. This utilizes the adsorption layer to protect the dust cover. Therefore, when cleaning the dust cover, only the adsorption layer needs to be disassembled and cleaned; there is no need to clean the outside of the dust cover. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front structural diagram of the present invention;

[0020] Figure 3 This is a partial structural diagram of the high-temperature resistant layer and the wear-resistant layer of this utility model;

[0021] Figure 4 This is a schematic diagram of the dust cover part of this utility model.

[0022] In the diagram: 1. Base body; 2. Positioning ring; 3. Positioning screw groove; 4. Channel; 5. Positioning screw; 6. High temperature resistant layer; 7. Colloid; 8. Wear-resistant layer; 9. Mounting screw groove; 10. Mounting screw; 11. Dust cover; 12. First Velcro; 13. Second Velcro; 14. Adhesive layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Please see Figure 1 and Figure 2 A high wear-resistant pumping unit packing includes: a packing body 1, which is made of natural rubber. During installation, the packing body 1 is placed into the packing box one ring at a time. Each ring is pressed tightly by hand or with a tool to ensure a tight fit between the packing rings. The cuts of the packing body 1 should be staggered at a certain angle (generally 90° or 120°) to enhance the sealing effect. After all the packing bodies 1 are installed, the bolts of the packing box cover are tightened, but not too tight. Overtightening will increase the friction between the polished rod and the packing, accelerating the wear of the packing. Overtightening will lead to poor sealing and leakage. Generally, it is advisable to have slight resistance but no jamming when the polished rod moves up and down.

[0027] Please see Figure 2 and Figure 3The inner wall of the substrate 1 has a multi-layered structure to improve its high-temperature resistance and wear resistance. This multi-layered structure includes a positioning ring 2, a high-temperature resistant layer 6, and a wear-resistant layer 8. The positioning ring 2 is located inside the substrate 1, and its outer wall has a positioning screw groove 3. The outer wall of the substrate 1 has multiple channels 4, and the inner wall of each channel 4 has a positioning screw 5, with one end of the screw 5 extending into the positioning screw groove 3. The outer wall of the positioning ring 2 is fitted with a high-temperature resistant layer 6, and the outer wall of the high-temperature resistant layer 6 is fitted with a colloid 7. The outer wall of the colloid 7 is fitted with a wear-resistant layer 8. Natural rubber has a short service life and poor high-temperature and wear resistance, so improvements are needed. First, the material of the substrate 1 is changed to fiberglass, which typically has a service life of over 30 years. The positioning ring 2 is made of graphite. The positioning ring 2, the high-temperature resistant layer 6, and the wear-resistant layer 8 all have the same shape as the substrate 1 and are all hollow cylindrical. The positioning screw groove 3... Matching the positioning screw 5, and with the interior of the channel 4 communicating with the interior of the positioning screw groove 3, multiple sets of channels 4 are provided, with a spacing of 10mm between each set of channels 4. The high-temperature resistant layer 6 is made of ceramic fiber material, which can withstand temperatures above 1200℃. The colloid 7 is a ceramic-based high-temperature adhesive, and the wear-resistant layer 8 is made of aramid fiber, which is 5-6 times stronger than steel wire. First, the colloid 7 is applied to the outside of the high-temperature resistant layer 6, and then the wear-resistant layer 8 is brought into contact with the colloid 7, thus fixing the high-temperature resistant layer 6 and the wear-resistant layer 8 together. Then, the positioning ring 2 is moved into the chassis body 1, and then multiple sets of positioning screws 5 are used to fix them into the positioning screw groove 3 through the channel 4, thus installing the high-temperature resistant layer 6 and the wear-resistant layer 8 in the chassis body 1, thereby improving the high-temperature resistance and wear resistance of the chassis body 1. This design is similar to firefighter protective clothing, with an outer flame-retardant and wear-resistant layer (wear-resistant layer 8) and an inner heat-insulating layer (high-temperature resistant layer 6), which work together to ensure functionality.

[0028] Please see Figure 2 and Figure 4The bottom of the substrate 1 is equipped with a dustproof mechanism to block external dust. The dustproof mechanism includes a mounting screw groove 9 and a dust cover 11. The top and bottom of the substrate 1 are both equipped with mounting screw grooves 9. The inner wall of the mounting screw groove 9 is equipped with a mounting screw 10. The dust cover 11 is located on top of the mounting screw 10. A first Velcro 12 is installed on the outer wall of the dust cover 11. An adsorption layer 14 is provided on the outer wall of the first Velcro 12. A second Velcro 13 is installed at the bottom of the adsorption layer 14. Both the top and bottom of the substrate 1 have a set of mounting screw grooves 9, which match the mounting screw 10. The dust cover 11 is made of ABS plastic. The first Velcro 12 has a rough surface, and the second Velcro 13 has a hook surface. After the two are bonded together, the tensile strength is ≥9 N / cm², and it can be repeatedly disassembled. Cleaning: The adsorption layer 14 is made of polypropylene spunbond nonwoven fabric. When the substrate 1 is not in use, external dust often enters the substrate 1, causing dust to accumulate on the wear-resistant layer 8, which increases the wear of dust impurities on the substrate 1 and the smooth rod. Therefore, this needs to be improved. First, when the substrate 1 is not in use, one end of the mounting screw 10 is located in the mounting screw groove 9 and rotated until the dust cover 11 covers the top and bottom of the substrate 1. Then, the second Velcro 13 is attached to the first Velcro 12, and the adsorption layer 14 is installed on the outside of the dust cover 11. The adsorption layer 14 is used to protect the dust cover 11. When cleaning the dust on the dust cover 11, it is only necessary to disassemble and clean the adsorption layer 14, without cleaning the outside of the dust cover 11.

[0029] Working principle: The existing packing body 1 is made of natural rubber. During installation, the packing body 1 is placed into the packing box one ring at a time, pressing it firmly with hands or tools after each ring to ensure a tight fit between the packing rings. The cuts of the packing body 1 should be staggered at a certain angle (generally 90° or 120°) to enhance the sealing effect. After all the packing bodies 1 are installed, tighten the bolts of the packing box cover, but do not overtighten. Overtightening will increase the friction between the smooth rod and the packing, accelerating packing wear. Overtightening will lead to poor sealing and leakage. Generally, it is advisable to tighten the smooth rod slightly without jamming when it moves up and down. First, apply the adhesive 7 to the outside of the high-temperature resistant layer 6, then bring the wear-resistant layer 8 into contact with the adhesive 7, thus fixing the high-temperature resistant layer 6 and the wear-resistant layer 8 together. Then, move the positioning ring 2 into the packing body 1, and then use multiple sets of positioning screws 5 to fix them into the positioning screw grooves 3 through the channels 4, thus installing the high-temperature resistant layer 6 and the wear-resistant layer 8 onto the packing. In the main body 1, the high temperature resistance and wear resistance of the main body 1 are improved. This design is similar to firefighter protective clothing, with an outer flame-retardant and wear-resistant layer (wear-resistant layer 8) and an inner heat-insulating layer (high temperature resistant layer 6). The two work together to protect the function. When the main body 1 is not in use, external dust often enters the main body 1, causing dust to accumulate on the wear-resistant layer 8, which increases the wear of dust impurities on the main body 1 and the smooth rod. Therefore, this needs to be improved. First, when the main body 1 is not in use, one end of the mounting screw 10 is located in the mounting screw groove 9 and rotated until the dust cover 11 covers the top and bottom of the main body 1. Then, the second Velcro 13 is attached to the first Velcro 12, and the adsorption layer 14 is installed on the outside of the dust cover 11. The adsorption layer 14 is used to protect the dust cover 11. When cleaning the dust on the dust cover 11, it is only necessary to disassemble and clean the adsorption layer 14. There is no need to clean the outside of the dust cover 11.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high wear resistant pumping unit packing, characterized in that, Including: the inner wall of disc base body (1) is equipped with multilayer mechanism, multilayer mechanism is used to improve the high temperature resistance and wear resistance of disc base body (1); Multilayer mechanism includes positioning ring (2), high temperature resistance layer (6) and wear resistance layer (8), the inside of positioning ring (2) is located in disc base body (1), the outer wall of positioning ring (2) is equipped with positioning screw groove (3), the outer wall of disc base body (1) is equipped with multiple groups of channels (4), the inner wall of channel (4) is equipped with positioning screw rod (5), and one end of positioning screw rod (5) extends to the inside of positioning screw groove (3), the outer wall of positioning ring (2) is installed with high temperature resistance layer (6), the outer wall of high temperature resistance layer (6) is equipped with colloid (7), the outer wall of colloid (7) is installed with wear resistance layer (8).

2. A high wear resistant pumping unit packing as claimed in claim 1 characterized in that: The bottom of disc base body (1) is equipped with dustproof mechanism, dustproof mechanism is used to shield dust from the outside world.

3. A high wear resistant pumping unit packing as claimed in claim 2, characterized in that: The dustproof mechanism includes mounting screw groove (9) and dust cover (11), the top and bottom of disc base body (1) are equipped with mounting screw groove (9).

4. A high wear resistant pumping unit packing as claimed in claim 3, characterized in that: The inner wall of mounting screw groove (9) is equipped with mounting screw rod (10), and the dust cover (11) is located at the top of mounting screw rod (10).

5. A high wear resistant pumping unit packing as claimed in claim 4, characterized in that: The outer wall of dust cover (11) is installed with first magic tape (12).

6. A high wear resistant pumping unit packing as claimed in claim 5, characterized in that: The outer wall of first magic tape (12) is equipped with adsorption layer (14).

7. A high wear resistant pumping unit packing as claimed in claim 6, characterized in that: The bottom of adsorption layer (14) is installed with second magic tape (13).

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