Large-flow side-in ejection crude oil pump for shipping crude oil in reservoir area

Abstract

The utility model provides a large-flow side-in push-out crude oil pump for shipping crude oil in a reservoir area, which comprises a pump body provided with a horizontal inlet and a vertical outlet, two sides of the pump body are connected with a front pump cover and a rear pump cover, and a pump shaft is arranged in the front pump cover, the rear pump cover and the pump body in a penetrating manner. A coupler is arranged at one end of the pump shaft, an impeller is connected to the pump shaft and located in the pump body, the impeller is of a single-stage double-suction closed type, and a mechanical seal is arranged on the sealing cavity. A shell sealing ring and an impeller sealing ring are arranged at the matching position of the pump body and the front portion of the impeller, the matching position of the front pump cover and the impeller, and the matching position of the rear pump cover and the rear portion of the impeller respectively. Long-term use and continuous operation of equipment are guaranteed, and reliable guarantee is provided for a crude oil shipping device in a reservoir area.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil loading in a reservoir area of ​​the petrochemical industry, in particular to a large-flow side-inlet and top-out crude oil pump for loading crude oil in a reservoir area. Background Art

[0002] Crude oil loading in the reservoir area is a way of transporting oil products in and out of ships. A large-flow side-inlet and top-out crude oil pump for crude oil loading in the reservoir area is mainly used to transport crude oil. It is a long-term continuous operation equipment. As the domestic market has put forward higher and higher requirements on loading time, the technical development and application of pumps for crude oil loading equipment in the reservoir area have been accelerated.

[0003] Crude oil pump is a large key equipment for crude oil storage and transportation in the crude oil loading device of the storage area. It is mainly used for crude oil transportation, oil tank emptying, crude oil loading and unloading, etc. Since crude oil pump has the characteristics of large initial investment, long operation cycle, and high power consumption, this equipment plays a vital role in the entire crude oil storage area. Utility Model Content

[0004] The utility model provides a large flow side-inlet and top-out crude oil pump for loading crude oil on ships in a reservoir area, which has the characteristics of stable operation, high working efficiency, good sealing effect, strong anti-wear performance and long service life.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a large-flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area, comprising a pump body provided with a horizontal inlet and a vertical outlet, a front pump cover and a rear pump cover are connected to both sides of the pump body, a pump shaft is penetrated through the front pump cover, the rear pump cover and the interior of the pump body, a coupling is provided at one end of the pump shaft, an impeller is connected to the pump shaft and located in the pump body, the impeller is a single-stage double-suction closed type, and the driving end and non-driving end of the pump shaft are respectively provided with A first bearing body and a second bearing body, a sealing cavity is provided between the pump shaft and the front pump cover and the rear pump cover, a mechanical seal is provided on the sealing cavity, a casing sealing ring and an impeller sealing ring are provided at the matching position between the pump body and the front part of the impeller, and at the matching position between the front pump cover and the impeller, and at the matching position between the rear pump cover and the rear part of the impeller, respectively, a graphite stainless steel winding gasket is provided at the connection between the pump body and the front pump cover and the rear pump cover, and an impeller locking nut is fixedly installed at one end of the impeller and located outside the pump shaft.

[0006] Preferably, the first bearing body is configured as a radial bearing of a deep groove ball bearing, and the second bearing body is configured as a thrust bearing of a pair of angular contact ball bearing structures.

[0007] Preferably, the impeller is mounted on the pump shaft in a sliding manner, and an impeller locking nut and a pillow block are provided between the impeller and the pump shaft.

[0008] Preferably, a full circle flange bracket is respectively provided on the first bearing body and the second bearing body, and a first bearing cover A, a first bearing cover B and a second bearing cover are respectively provided at both ends of the pump shaft, and dustproof plates are respectively installed at the matching positions of the first bearing cover A, the first bearing cover B and the pump shaft.

[0009] Preferably, a casing sealing ring and an impeller sealing ring are provided between the impeller and the pump body.

[0010] Preferably, a stainless steel graphite wound gasket with the same structure is provided between the pump body and the front pump cover and the rear pump cover.

[0011] Preferably, the oil slinger and the oil cup are provided on the first bearing body and the second bearing body.

[0012] Preferably, a first throat bushing and a second throat bushing are respectively provided between the impeller and the front pump cover and the rear pump cover.

[0013] Preferably, the mechanical seal is a container-type mechanical seal, which is formed by a self-flushing pipeline seal, a drain pipeline is connected to the bottom of the pump body, and a gate valve is arranged in series on the drain pipeline.

[0014] Beneficial Effects

[0015] The utility model provides a large-flow side-inlet and outlet crude oil pump for loading crude oil on ships in a reservoir area, which has the following beneficial effects: the device has a compact structure, the impeller is a double-suction impeller, the radial bearing in the first bearing body adopts a deep groove ball bearing, which can withstand heavy loads and impact loads, and has a small friction coefficient, which is suitable for high-speed and stable operation of the pump, the thrust bearing in the second bearing body adopts two angular contact ball bearing structures arranged back to back, the double-suction impeller balances the main axial force, and the thrust bearing bears the residual axial force, thereby enhancing the stability of the pump, and the pump body, the front pump cover and the rear pump cover are respectively provided with a casing sealing ring and an impeller sealing ring at the joints with the impeller, which can play a role in throttling and reducing pressure, and the casing sealing ring and the impeller sealing ring are heat-treated to increase their hardness, and the casing sealing ring and the impeller sealing ring have different surface hardnesses , which can make the pump safer and more stable during operation. The graphite stainless steel wound gasket can effectively prevent leakage from the sealing surface of the pump body and the front pump cover and the rear pump cover, avoiding the leakage risk caused by the failure of the O-ring seal commonly used in the current technology. In order to facilitate the disassembly of the front pump cover and the rear pump cover during maintenance, top screw holes are provided on the front pump cover and the rear pump cover. At the same time, throat bushings are respectively provided between the rotor and the front pump cover and the rear pump cover, which can play a throttling role. In order to seal the entire pump and ensure the sealing performance of the pump, the first bearing body and the second bearing body drive the oil slinger ring to throw oil to realize self-lubrication of the bearing body when the pump shaft rotates, and the oil cup can automatically replenish oil to the first bearing body and the second bearing body according to its own oil level, ensuring the long-term normal operation of the pump.

[0016] The pump body, impeller, front pump cover and rear pump cover are all integrally cast using precision casting technology after structural optimization. The internal dimensions of the flow channel are highly accurate and smooth, which improves the working efficiency of the pump and ensures the performance and usage requirements required by users.

[0017] The device has stable operation, high working efficiency, good sealing effect, strong anti-wear performance and long service life, which ensures the long-term use and continuous operation of the equipment, and also provides reliable guarantee for the crude oil loading device in the reservoir area. It can be widely used in crude oil storage and transportation device projects, bringing convenience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a side view schematic diagram of the utility model.

[0020] In the figure: 1. coupling; 2. pump shaft; 3. dust plate; 4. first bearing gland; 5. radial bearing; 6. first bearing body; 7. first bearing gland B; 8. mechanical seal; 9. front pump cover; 10. pump body; 11. casing sealing ring; 12. impeller; 13. impeller sealing ring; 14. second throat bushing; 15. impeller locking nut; 16. graphite stainless steel winding gasket; 17. second bearing gland; 18. thrust bearing; 19. second bearing body; 20. rear pump cover; 21. drain pipe; 22. O-ring; 23. first throat bushing; 24. oil cup; 25. oil throwing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 The utility model provides a technical solution: a large flow side-inlet and top-out crude oil pump for loading crude oil in a reservoir area, comprising a pump body 10 provided with a horizontal inlet and a vertical outlet, a front pump cover 9 and a rear pump cover 20 are connected to both sides of the pump body 10, a pump shaft 2 is penetrated through the front pump cover 9, the rear pump cover 20 and the interior of the pump body 10, a coupling 1 is provided at one end of the pump shaft 2, an impeller 12 is connected on the pump shaft 2 and located in the pump body 10, the impeller 12 is a single-stage double-suction closed type, and the driving end and the non-driving end of the pump shaft 2 are respectively provided with a first bearing body 6 and a second bearing The pump body 19, the pump shaft 2 and the front pump cover 9 and the rear pump cover 20 are provided with a sealing cavity therebetween, and a mechanical seal 8 is provided on the sealing cavity. The matching parts of the pump body 10 and the front part of the impeller 12, and the matching parts of the front pump cover 9 and the impeller 12, and the rear pump cover 20 and the rear part of the impeller 12 are respectively provided with a casing sealing ring 11 and an impeller sealing ring 13. A graphite stainless steel winding gasket 16 is provided at the connection between the pump body 10 and the front pump cover 9 and the rear pump cover 20, and an impeller locking nut 15 is fixedly installed at one end of the impeller 12 and located outside the pump shaft 2.

[0023] Furthermore, the first bearing body 6 is configured as a radial bearing 5 of a deep groove ball bearing, and the second bearing body 19 is configured as a thrust bearing 18 of a pair of angular contact ball bearing structures.

[0024] Furthermore, the impeller 12 is mounted on the pump shaft 2 in a sliding manner, and an impeller locking nut and a pillow block are provided between the impeller 12 and the pump shaft 2 .

[0025] Furthermore, a full circle flange bracket is respectively provided on the first bearing body 6 and the second bearing body 19, and a first bearing cover A 4, a first bearing cover B 7 and a second bearing cover 17 are respectively provided at both ends of the pump shaft 2, and dustproof plates 3 are respectively installed at the matching positions of the first bearing cover A 4, the first bearing cover B 7 and the pump shaft 2.

[0026] Furthermore, a casing sealing ring 11 and an impeller sealing ring 13 are provided between the impeller 12 and the pump body 10 .

[0027] Furthermore, a stainless steel graphite wound gasket with the same structure is provided between the pump body 10 and the front pump cover 9 and the rear pump cover 20 .

[0028] Furthermore, the oil slinger 25 and the oil cup 24 are provided on the first bearing body 6 and the second bearing body 19 .

[0029] Furthermore, a first throat bushing 23 and a second throat bushing 14 are respectively provided between the impeller 12 and the front pump cover 9 and the rear pump cover 20 .

[0030] Furthermore, the mechanical seal 8 is a container-type mechanical seal, which is formed by a self-flushing pipeline seal. The bottom of the pump body 10 is connected to a drain pipeline 21 , and two gate valves are arranged in series on the drain pipeline 21 .

[0031] Embodiment: The crude oil pump for the crude oil loading device in the reservoir area provided by the utility model is a radially split horizontal single-stage double-suction double-volute centrifugal pump. The driving end of the pump is directly connected to the motor through an elastic diaphragm coupling, wherein the pump and the motor are assembled together on the same joint base. When working, the crude oil tank pipeline of the device is connected to the inlet of the pump through the inlet flange, and the crude oil enters the pump body 10 from the inlet. The motor drives the pump shaft 2 to rotate at a high speed, and the pump shaft 2 drives the impeller 12 to rotate at a high speed, and the crude oil entering the pump body 10 is discharged from the outlet of the pump body 10 after being pressurized, so as to transport the crude oil, empty the oil tank, and load and unload the crude oil, which is convenient to use.

[0032] The impeller is a double-suction impeller, which can balance the main axial force of the pump shaft during operation. The radial bearing in the first bearing body adopts a deep groove ball bearing, which can withstand heavy loads and impact loads, and has a small friction coefficient, which is suitable for high-speed and stable operation of the pump.

[0033] The thrust bearing in the second bearing body adopts two angular contact ball bearings arranged back to back. The double-suction impeller balances the main axial force, and the thrust bearing bears the residual axial force, thereby enhancing the stability of the pump. The pump body, front pump cover and rear pump cover are respectively provided with casing sealing rings and impeller sealing rings at the joints with the impeller, which can play the role of throttling and pressure reduction. In addition, the casing sealing ring and the impeller sealing ring are heat-treated to increase their hardness. The different surface hardness of the casing sealing ring and the impeller sealing ring can make the pump safer and more stable during operation. The graphite stainless steel wound gasket can effectively prevent leakage from the sealing surfaces of the pump body and the front pump cover and the rear pump cover, avoiding the leakage risk caused by the failure of the O-ring seal commonly used in current technology.

[0034] In order to facilitate the disassembly of the front pump cover and the rear pump cover during maintenance, top screw holes are arranged on the front pump cover and the rear pump cover. At the same time, throat bushings are arranged between the rotor and the front pump cover and the rear pump cover respectively, which can play a throttling role. In order to seal the entire pump and ensure the sealing performance of the pump, the first bearing body and the second bearing body drive the oil slinger ring to throw oil to realize self-lubrication of the bearing body when the pump shaft rotates, and the oil cup can automatically replenish oil to the first bearing body and the second bearing body according to its own oil level, ensuring the long-term normal operation of the pump.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large flow side-inlet and top-out crude oil pump for loading crude oil from a reservoir, comprising a pump body (10) provided with a horizontal inlet and a vertical outlet, characterized in that: The pump body (10) is connected to a front pump cover (9) and a rear pump cover (20) on both sides. A pump shaft (2) is provided through the front pump cover (9), the rear pump cover (20) and the interior of the pump body (10). A coupling (1) is provided at one end of the pump shaft (2). An impeller (12) is connected to the pump shaft (2) and located inside the pump body (10). The impeller (12) is a single-stage double-suction closed type. The driving end and the non-driving end of the pump shaft (2) are respectively provided with a first bearing body (6) and a second bearing body (19). The pump shaft (2) is provided with a plurality of couplings (1) and ... There is a sealing cavity between the pump body (10) and the front of the impeller (12), and the front pump cover (9) and the impeller (12) and the rear pump cover (20) and the rear of the impeller (12) are respectively provided with a casing sealing ring (11) and an impeller sealing ring (13). A graphite stainless steel winding gasket (16) is provided at the connection between the pump body (10) and the front pump cover (9) and the rear pump cover (20). An impeller locking nut (15) is fixedly installed at one end of the impeller (12) and located outside the pump shaft (2).

2. A large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1, characterized in that: The first bearing body (6) is configured as a radial bearing (5) of a deep groove ball bearing, and the second bearing body (19) is configured as a thrust bearing (18) of a pair of angular contact ball bearing structures.

3. A large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1, characterized in that: The impeller (12) is mounted on the pump shaft (2) in a sliding manner, and an impeller locking nut and a pillow block are provided between the impeller (12) and the pump shaft (2).

4. A large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1, characterized in that: The first bearing body (6) and the second bearing body (19) are respectively provided with a full circle flange bracket, and the two ends of the pump shaft (2) are respectively provided with a first bearing pressure cover A (4), a first bearing pressure cover B (7) and a second bearing pressure cover (17), and the first bearing pressure cover A (4), the first bearing pressure cover B (7) and the pump shaft (2) are respectively installed with dustproof plates (3) at the matching positions of the first bearing pressure cover A (4), the first bearing pressure cover B (7) and the pump shaft (2).

5. The large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1 is characterized in that: A casing sealing ring (11) and an impeller sealing ring (13) are provided between the impeller (12) and the pump body (10).

6. A large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1, characterized in that: A stainless steel graphite wound gasket with the same structure is arranged between the pump body (10), the front pump cover (9) and the rear pump cover (20).

7. The large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1 is characterized in that: The first bearing body (6) and the second bearing body (19) are provided with the oil slinger (25) and the oil cup (24).

8. The large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1 is characterized in that: A first throat bushing (23) and a second throat bushing (14) are respectively arranged between the impeller (12) and the front pump cover (9) and the rear pump cover (20).

9. The large flow side-inlet and top-out crude oil pump for loading crude oil on a ship in a storage area according to claim 1 is characterized in that: The mechanical seal (8) is a container-type mechanical seal, which is formed by a self-flushing pipeline seal. The bottom of the pump body (10) is connected to a drainage pipeline (21), and two gate valves are arranged in series on the drainage pipeline (21).

Images