Fracturing pump fluid end oil receiving device

Abstract

The utility model discloses a fracturing pump fluid end oil receiving device which comprises an oil receiving groove and an oil scraping mechanism, an inclined face is arranged at the groove bottom of the oil receiving groove, an oil discharge outlet is formed in the downward inclined end of the inclined face, the oil scraping mechanism comprises a chain ring, a scraping plate and a driving piece, and a first support and a second support are arranged at the two ends of the inclined face respectively. The chain ring is rotationally connected to the first support and the second support, the chain ring forms two conveying paths which are different in height and opposite in direction, the top end of the scraper is hinged to the chain ring, the chain ring forms the two conveying paths which are different in height and opposite in direction, and the scraper can automatically ascend along with rotation of the chain ring. According to the plunger oil recovery device, the inclined plane is arranged on the scraper blade, so that the scraper blade can be reset after being separated from the inclined plane, the situation that the scraper blade is reversely pushed to leak oil in the reset process is effectively avoided, the unicity of the moving direction of the scraper blade on the inclined plane is realized, an oil scraping blind area on the inclined plane is avoided, and the recovery effect of plunger oil leakage is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing pumps, in particular to a hydraulic end oil connection device for a fracturing pump. Background Art

[0002] The fracturing pump needs to replace the plunger during long-term operation. When the plunger is replaced, the oil in the pump will leak out, and a recovery device is needed to receive the leaked oil. For example, the authorization announcement number CN215174048U is named a utility model patent for a hydraulic end oil connection device for a fracturing pump and a fracturing pump, which includes a pair of scrapers and an oil receiving trough and an oil box arranged below the plunger of the fracturing pump, two oil discharge ports are arranged at the lowest position at the bottom of the oil receiving trough, and two oil boxes are arranged below the oil discharge ports. The two scrapers are used to push the oil in the oil receiving trough into their respective oil boxes, thereby realizing the reception of plunger leakage.

[0003] However, the two scrapers reciprocate along the length of the oil receiving groove, resulting in a blind area for scraping oil. The oil in the blind area is difficult to be pushed into the oil box by the scrapers, resulting in incomplete recovery of leaked oil, and further making the recovery effect of plunger oil leakage poor. Utility Model Content

[0004] The utility model aims to overcome the above technical deficiencies, and proposes a hydraulic end oil connection device for a fracturing pump to solve the technical problem of poor recovery effect of plunger oil leakage in the prior art.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a hydraulic end oil connection device for a fracturing pump, comprising:

[0007] An oil receiving groove, wherein the bottom of the oil receiving groove is provided with an inclined surface, and an oil discharge port is provided at one end of the inclined surface which is inclined downward;

[0008] An oil scraping mechanism includes a chain ring, a scraper and a driving member, wherein a first bracket and a second bracket are respectively provided at both ends of the inclined surface, the chain ring is rotatably connected to the first bracket and the second bracket, and the chain ring forms two transmission paths with different heights and opposite directions, the top end of the scraper is hinged to the chain ring, and the driving member is used to drive the chain ring to operate and enable the scraper to move in a single direction on the inclined surface.

[0009] In some embodiments, a magnet is fixedly connected to the bottom end of the scraper, and the inclined surface and the scraper are magnetically connected.

[0010] In some embodiments, the magnet is in the shape of a triangular prism.

[0011] In some embodiments, the number of the chain rings and the driving members is a pair, the chain rings correspond to the driving members one by one, the two chain rings and the two driving members are respectively installed on both sides of the oil collecting trough, and the opposite sides of the scraper are respectively hinged to the two chain rings.

[0012] In some embodiments, the top end of the second bracket is located above the top end of the first bracket, and the chain ring is rotatably connected to the top ends of the first bracket and the second bracket.

[0013] In some embodiments, the top end of the first bracket and the top end of the second bracket are both hinged with a transmission wheel, the chain ring is slidably sleeved between the two transmission wheels, and the driving member drives the transmission wheel to rotate and drives the chain ring to rotate.

[0014] In some embodiments, two opposite sides of the scraper are fixedly connected with hinge rods, and the two hinge rods are respectively hinged to the two chain rings.

[0015] In some embodiments, the two transmission paths of the chain loop are the same length as the inclined surface.

[0016] In some embodiments, the bottom end of the oil drain port is fixedly connected to an oil box slot.

[0017] In some embodiments, the end of the oil box slot is fixedly connected to a limiting block.

[0018] Compared with the prior art, the utility model provides a hydraulic end oil connection device for a fracturing pump, which forms two transmission paths with different heights and opposite directions through a chain ring, so that the scraper can automatically rise with the rotation of the chain ring, and then the scraper can break away from the contact with the inclined surface and then reset, effectively avoiding the scraper from pushing the oil leakage in the reverse direction during the resetting process, realizing the single movement direction of the scraper on the inclined surface, thereby avoiding the oil scraping blind spot on the inclined surface, and effectively improving the recovery effect of plunger oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a hydraulic end oil connection device for a fracturing pump provided by an embodiment of the utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of a hydraulic end oil connection device for a fracturing pump provided by an embodiment of the utility model. Figure 2 .

[0021] Explanation of the reference numerals: 1. oil collecting groove; 11. inclined plane; 12. oil drain port; 13. oil box slot; 131. limit block; 2. oil scraping mechanism; 21. chain ring; 211. first bracket; 212. second bracket; 213. transmission wheel; 22. scraper; 221. magnet; 222. articulated rod; 23. driving member. DETAILED DESCRIPTION

[0022] 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.

[0023] In order to solve the technical problem of poor recovery effect of plunger oil leakage, the utility model provides a hydraulic end oil connection device for a fracturing pump, which can improve the recovery effect of plunger oil leakage.

[0024] It should be noted that the hydraulic end oil device of a fracturing pump described in the utility model is used for but not limited to fracturing pumps, etc. For the convenience of explanation, in the utility model, only an example of a hydraulic end oil device of a fracturing pump applied to a fracturing pump is used for explanation. The principle of applying a hydraulic end oil device of a fracturing pump to other types of equipment is essentially the same as the principle applied to a fracturing pump, which will not be repeated here.

[0025] See also Figure 1-Figure 2 ,in Figure 1 This is a structural schematic diagram of a hydraulic end oil connection device for a fracturing pump in an embodiment of the utility model, a hydraulic end oil connection device for a fracturing pump includes an oil receiving tank 1 and an oil scraper mechanism 2, the bottom of the oil receiving tank 1 is provided with an inclined surface 11, an oil discharge port 12 is opened at one end of the inclined surface 11 inclined downward, the oil scraper mechanism 2 includes a chain ring 21, a scraper 22 and a driving member 23, a first bracket 211 and a second bracket 212 are respectively provided at both ends of the inclined surface 11, the chain ring 21 is rotatably connected to the first bracket 211 and the second bracket 212, and the chain ring 21 forms two transmission paths with different heights and opposite directions, the top end of the scraper 22 is hinged to the chain ring 21, and the driving member 23 is used to drive the chain ring 21 to operate and make the scraper 22 move in a single direction on the inclined surface 11.

[0026] In this embodiment, the chain ring 21 forms two transmission paths with different heights and opposite directions, so that the scraper 22 can automatically rise with the rotation of the chain ring 21, and then the scraper 22 can break away from the contact with the inclined surface 11 and then reset, effectively avoiding the scraper 22 pushing the oil leakage in the reverse direction during the resetting process, and realizing the single movement direction of the scraper 22 on the inclined surface 11, thereby avoiding the oil scraping blind spot on the inclined surface 11 and effectively improving the recovery effect of the plunger oil leakage.

[0027] First, during the process of replacing the plunger, part of the leaked oil will flow toward the oil drain port 12 along the inclined surface 11; then, facing part of the oil adhering to the inclined surface 11, the driving member 23 is started, and the chain ring 21 is rotated, so that the scraper 22 moves on the inclined surface 11 toward the oil drain port 12, thereby completing the scraping of the leaked oil on the inclined surface 11; finally, the driving member 23 is started, and the chain ring 21 is rotated, so that the scraper 22 is reset to the higher end of the inclined surface 11.

[0028] In one embodiment, see Figure 1 The bottom end of the scraper 22 is fixedly connected with a magnet 221, and the inclined surface 11 and the scraper 22 are magnetically connected.

[0029] In this embodiment, the function of the magnet 221 is to ensure that the scraper 22 can always be in close contact with the inclined surface 11 during the movement toward the oil discharge port 12, thereby improving the scraping effect of the oil leak on the inclined surface 11 and preventing the scraper 22 from falling off the inclined surface 11 and affecting the scraping effect.

[0030] Furthermore, the magnet 221 can absorb some ferrous or magnetic impurities in the leaking oil to improve the purity of the leaking oil. The scraper 22 will be suspended in the air when the chain ring 21 returns to the higher end of the inclined surface 11, making it convenient for the staff to clean the impurities around the magnet 221.

[0031] In one embodiment, see Figure 1 , the magnet 221 is in the shape of a triangular prism.

[0032] In this embodiment, the tip of the magnet 221 is slidably connected to the inclined surface 11. When the scraper 22 moves toward the oil discharge port 12, it drives the magnet 221 to move on the inclined surface 11. The tip of the magnet 221 can more effectively scrape off the leaked oil on the inclined surface 11.

[0033] In one embodiment, see Figure 1 The number of chain rings 21 and driving members 23 is a pair, and the chain rings 21 and the driving members 23 correspond one to one. The two chain rings 21 and the two driving members 23 are respectively installed on both sides of the oil receiving groove 1, and the opposite sides of the scraper 22 are respectively hinged to the two chain rings 21.

[0034] In this embodiment, two sets of chain rings 21 and driving members 23 are arranged side by side and relatively on both sides of the oil receiving tank 1, and the operation of the scraper 22 is controlled together, which can effectively improve the stability of the scraper 22 during operation. At the same time, the two driving members 23 are synchronously operated through the PLC computer control terminal, which further improves the stability of the scraper 22 during operation.

[0035] It should be noted that, compared with the traditional handle that will receive the leaked oil and affect the receiving effect of the oil receiving tank 1, the oil receiving tank 1 in the utility model has no interference from the handle, thereby improving the effect of leaked oil recovery.

[0036] In one embodiment, see Figure 1 The top of the second bracket 212 is located above the top of the first bracket 211 , and the chain ring 21 is rotatably connected to the tops of the first bracket 211 and the second bracket 212 .

[0037] In this embodiment, in order to enable the scraper 22 to move along the length direction of the inclined surface 11, the chain ring 21 needs to have the same inclination as the inclined surface 11, that is, the inclination of the chain ring 21 is achieved by the first bracket 211 and the second bracket 212 being one high and one low.

[0038] Furthermore, in order to improve the stability of the chain ring 21 , a plurality of support frames are installed between the first support 211 and the second support 212 for supporting the chain ring 21 .

[0039] In one embodiment, see Figure 1 The top of the first bracket 211 and the top of the second bracket 212 are both hinged with a transmission wheel 213, and the chain ring 21 is slidably sleeved between the two transmission wheels 213. The driving member 23 drives the transmission wheel 213 to rotate and drives the chain ring 21 to rotate.

[0040] In this embodiment, the driving member 23 adopts a servo motor to facilitate controlling the scraping efficiency of the scraper 22. The transmission wheel 213 uses a gear, which is hinged to the top of the first bracket 211 or the second bracket 212. The fixed end of the motor is fixedly connected to the first bracket 211 or the second bracket 212, and the movable end of the motor is fixedly connected to the gear. The chain ring 21 is a closed-loop structure. A circle of racks is installed on the inner wall of the chain ring 21. The outer wall of the chain ring 21 is hinged to the scraper 22. The motor drives the gear to rotate, and the gear drives the chain ring 21 to rotate, so that the chain ring 21 realizes the reciprocating movement of the scraper 22.

[0041] It should be noted that due to the presence of the gears, there is a height difference in the chain ring 21 on the reciprocating path, which in turn causes a height difference in the scraper 22 on the reciprocating path. When the scraper 22 moves toward the oil discharge port 12, it is close to the inclined surface 11. When the scraper 22 moves away from the smoke exhaust port, due to the height difference, the scraper 22 will fall off the connection with the inclined surface 11, that is, the scraper 22 is suspended in the air, which effectively prevents the oil in the oil collecting tank 1 from moving away from the oil discharge port 12 when the scraper 22 is reset.

[0042] In one embodiment, see Figure 1 The scraper 22 has hinge rods 222 fixedly connected to opposite sides thereof, and the two hinge rods 222 are hinged to the two chain rings 21 respectively.

[0043] In this embodiment, circular grooves are provided on the opposite surfaces of the chain ring 21, and the two hinged rods 222 are rotatably sleeved in the two circular grooves respectively. On the one hand, the chain ring 21 drives the scraper 22 to move together, and on the other hand, it ensures that the scraper 22 is always in a vertical downward state.

[0044] In one embodiment, see Figure 1 , the two transmission paths of the chain ring 21 are the same length as the inclined surface 11.

[0045] In this embodiment, the chain ring 21 is the same length as the inclined surface 11 , so that the chain ring 21 can drive the scraper 22 to scrape all the leaked oil on the inclined surface 11 to the oil discharge port 12 to avoid leakage.

[0046] It should be noted that the chain ring 21 drives the scraper 22 to perform a reciprocating motion. In addition, considering the length of the connection between the chain ring 21 and the transmission wheel 213 , the actual length of the chain ring 21 is more than twice the length of the inclined surface 11 .

[0047] In one embodiment, see Figure 1 The bottom end of the oil discharge port 12 is fixedly connected with an oil box slot 13.

[0048] In this embodiment, a guiding device is provided in the oil box slot 13, and a sliding device matching the guiding device is provided on the oil box. The connection method between the sliding device and the guiding device is utilized to realize a detachable connection between the oil box slot 13 and the oil box, which is beneficial to completing the installation and disassembly of the oil box in the oil box slot 13, improving the installation and disassembly efficiency of the oil box, and facilitating the completion of the receiving work of the plunger oil leakage.

[0049] Furthermore, in order to facilitate the operator to observe the oil amount in the oil box, the oil box can be designed to be made of transparent plastic.

[0050] Furthermore, in order to ensure the balance of the oil receiving tank 1 , a base is fixedly connected to the other end of the bottom end of the oil receiving tank 1 opposite to the oil box slot 13 .

[0051] In one embodiment, see Figure 1 The end of the oil box slot 13 is fixedly connected to the limiting block 131.

[0052] In this embodiment, the limit block 131 is fixedly installed on the installation path of the oil box. When the oil box and the oil box slot 13 are installed, the limit block 131 abuts against the oil box, which is convenient for the staff to determine the position of the oil box and prevents the oil box from being incorrectly installed below the oil drain port 12 during installation, which is conducive to completing the receiving work of the plunger oil leakage.

[0053] In order to better understand the present invention, the following Figure 1 to Figure 2 The technical solution of the utility model is described in detail:

[0054] First, during the process of replacing the plunger, part of the leaked oil will flow to the oil drain port 12 along the inclined surface 11, and the initial position of the scraper 22 is at the higher end of the inclined surface 11; then, for the remaining oil stuck on the inclined surface 11, the driving member 23 is started, and the chain ring 21 rotates, so that the scraper 22 moves on the inclined surface 11 toward the oil drain port 12, and the magnet 221 ensures that the scraper 22 is closely connected to the inclined surface 11, that is, the oil leakage on the inclined surface 11 is scraped off; finally, as the chain ring 21 continues to move, the scraper 22 passes through the transmission wheel 213 at the top of the first bracket 211, so that the magnet 221 is separated from the inclined surface 11, and the scraper 22 rises and hangs in the air, and moves toward the higher end of the inclined surface 11 until the scraper 22 is reset. The utility model realizes the single movement direction of the scraper 22 on the inclined surface 11, thereby avoiding the oil scraping blind spot on the inclined surface 11 and effectively improving the recovery effect of the plunger oil leakage.

[0055] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A hydraulic end oil connection device for a fracturing pump, characterized in that: include: An oil receiving groove, wherein the bottom of the oil receiving groove is provided with an inclined surface, and an oil discharge port is provided at one end of the inclined surface which is inclined downward; An oil scraping mechanism includes a chain ring, a scraper and a driving member, wherein a first bracket and a second bracket are respectively provided at both ends of the inclined surface, the chain ring is rotatably connected to the first bracket and the second bracket, and the chain ring forms two transmission paths with different heights and opposite directions, the top end of the scraper is hinged to the chain ring, and the driving member is used to drive the chain ring to operate and enable the scraper to move in a single direction on the inclined surface.

2. A hydraulic end oil connection device for a fracturing pump according to claim 1, characterized in that: The bottom end of the scraper is fixedly connected with a magnet, and the inclined surface and the scraper are magnetically connected.

3. A hydraulic end oil connection device for a fracturing pump according to claim 2, characterized in that: The magnet is in the shape of a triangular prism.

4. A hydraulic end oil connection device for a fracturing pump according to claim 1, characterized in that: The number of the chain rings and the driving members is a pair, and the chain rings correspond to the driving members one by one. The two chain rings and the two driving members are respectively installed on both sides of the oil receiving groove, and the opposite sides of the scraper are respectively hinged to the two chain rings.

5. A hydraulic end oil connection device for a fracturing pump according to claim 4, characterized in that: The top end of the second bracket is located above the top end of the first bracket, and the chain ring is rotatably connected to the top ends of the first bracket and the second bracket.

6. A hydraulic end oil connection device for a fracturing pump according to claim 5, characterized in that: The top ends of the first bracket and the second bracket are both hinged with transmission wheels, the chain ring is slidably sleeved between the two transmission wheels, and the driving member drives the transmission wheel to rotate and drives the chain ring to rotate.

7. A hydraulic end oil connection device for a fracturing pump according to claim 4, characterized in that: The two opposite sides of the scraper are fixedly connected with hinge rods, and the two hinge rods are respectively hinged to the two chain rings.

8. The hydraulic end oil connection device of a fracturing pump according to claim 1, characterized in that: The two transmission paths of the chain ring are the same length as the inclined surface.

9. The hydraulic end oil connection device of a fracturing pump according to claim 1, characterized in that: The bottom end of the oil discharge port is fixedly connected with an oil box slot.

10. A hydraulic end oil connection device for a fracturing pump according to claim 9, characterized in that: The end of the oil box slot is fixedly connected to a limiting block.

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