Oil-submerged pump and pump pipe assembly for oil-submerged pump

Abstract

The utility model relates to an oil-submerged pump and a pump pipe assembly used for the oil-submerged pump, the pump pipe assembly used for the oil-submerged pump comprises an oil way pipe, the oil way pipe comprises a first oil way pipe and a second oil way pipe, one end of the first oil way pipe extends into the second oil way pipe from the first end of the second oil way pipe, and the other end of the first oil way pipe extends into the second oil way pipe from the second end of the second oil way pipe; the second oil way pipe can stretch and retract in the axial direction of the second oil way pipe. The circuit pipe is arranged outside the oil way pipe and is parallel to the oil way pipe, the circuit pipe comprises a first circuit pipe and a second circuit pipe, and one end of the first circuit pipe extends into the second circuit pipe from the third end of the second circuit pipe and can stretch out and draw back in the axial direction of the second circuit pipe; the adjusting device is arranged on the oil way pipe and / or the circuit pipe and used for adjusting the length of the first oil way pipe stretching out and drawing back in the axial direction of the second oil way pipe and / or the length of the first circuit pipe stretching out and drawing back in the axial direction of the second circuit pipe. The length of the pump pipe assembly can be adjusted easily and easily in a labor-saving mode, and the pump pipe assembly is easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of refueling equipment, and in particular to a submersible pump and a pump pipe assembly for the submersible pump. Background Technology

[0002] In the fuel delivery system of a gas station, the submersible pump, as the core power unit, is typically mounted via a flange on the top riser structure of the storage tank. Generally, the storage tank is buried underground at the gas station, and a manhole is located at the top riser structure. Routine operations requiring manual intervention, such as the installation and maintenance of the submersible pump, must be performed by construction personnel inside the manhole. The submersible pump consists of a pump head, pump tubing, and a submersible motor. When installed on the storage tank, the pump head protrudes into the manhole, the pump tubing extends into the storage tank, and the submersible motor is submerged in fuel. When refueling is needed, the refueling nozzle is raised, a control relay receives a signal, and the corresponding submersible pump is activated, thus delivering fuel from the storage tank to the refueling dispenser.

[0003] Currently, most submersible pumps use an internal circuit conduit coaxially arranged within the fuel line conduit. When the pump tube is a telescopic tube with adjustable length, it needs to be connected using a clamping nut and a holding nut. When the clamping nut and holding nut are loosened, the pump tube can extend or retract to the specified length. Tightening the clamping nut along the threads of the holding nut secures the pump tube. However, due to limitations in the storage tank installation (the riser's bore diameter), the fuel line conduit is typically designed as a 2-inch pipe, resulting in 2-inch pipe threads for the clamping and holding nuts. Tightening these threads requires larger tools and greater torque. Adjusting the pump tube length is time-consuming and labor-intensive, requiring two people simultaneously, significant operating space, and making it difficult for maintenance personnel to remove or replace the clamping nut. In case of malfunction, the entire submersible pump must be returned to the factory for repair. Utility Model Content

[0004] To address the technical problems existing in the prior art, this utility model proposes a pump pipe assembly for a submersible pump, comprising: an oil passage pipe, including a first oil passage pipe and a second oil passage pipe, one end of the first oil passage pipe extending into the second oil passage pipe from a first end of the second oil passage pipe, and capable of axial extension and retraction along the second oil passage pipe; an electrical pipe, disposed outside the oil passage pipe and arranged parallel to the oil passage pipe, including a first electrical pipe and a second electrical pipe, one end of the first electrical pipe extending into the second electrical pipe from a third end of the second electrical pipe, and capable of axial extension and retraction along the second electrical pipe; and an adjustment device disposed on the oil passage pipe and / or the electrical pipe, for adjusting the length of axial extension and retraction of the first oil passage pipe along the second oil passage pipe and / or the length of axial extension and retraction of the first electrical pipe along the second electrical pipe.

[0005] As described above, the pump pipe assembly for a submersible pump includes an adjusting device comprising a first holding member, a second holding member, and a connector. The first holding member is disposed at the end of the second section of the oil passage that accommodates the first section of the oil passage. The second holding member is disposed on the first section of the oil passage. The connector connects the first holding member and the second holding member to fix the distance between the first holding member and the second holding member. When the second holding member is in a locked state, the first section of the oil passage and the second section of the oil passage are locked. When the second holding member is in an unlocked state, the first section of the oil passage can extend and retract axially along the second section of the oil passage.

[0006] As described above, in the pump tube assembly for a submersible pump, the first holding member and / or the second holding member extend at least partially outward to form a circuit tube receiving portion to receive the second section of circuit tube.

[0007] As described above, in the pump pipe assembly for a submersible pump, the first end of the second section of the oil pipe includes a connector for connecting to the first holding member.

[0008] The pump tube assembly for a submersible pump as described above includes a threaded connection.

[0009] As described above, in the pump pipe assembly for a submersible pump, the first clamping member includes: a first clamp, a second clamp, and a first fastener. The first clamp and the second clamp are clamped to the first end of the second oil passage pipe, and the first fastener secures the first clamp and the second clamp.

[0010] As described above, in the pump pipe assembly for a submersible pump, the second clamping member includes a third clamp, a fourth clamp, and a second fastener. The third clamp and the fourth clamp are clamped onto the first oil passage pipe, and the second fastener secures the third clamp and the fourth clamp.

[0011] As described above, in the pump tubing assembly for a submersible pump, the connector is connected to the first fastener and the second fastener.

[0012] As described above, in the pump tube assembly for a submersible pump, the circuit tube receiving portion includes a recess extending outward from the first clamp and / or the third clamp, and the second circuit tube is received in the recess.

[0013] According to another aspect of this application, a submersible pump is proposed, comprising: a pump tube assembly for a submersible pump as described above.

[0014] The pump pipe assembly of this application arranges the circuit pipe and oil pipe in parallel and at intervals, and can realize the adjustment of the pump pipe length. The adjustment operation is simple, easy and labor-saving, and the later maintenance difficulty is low. It can also free up flow space for the oil pipe, which helps to reduce the operating power of the submersible pump. Under the same power consumption, the submersible pump can provide more oil to the fuel dispenser. Attached Figure Description

[0015] The preferred embodiments of this utility model will now be described in further detail with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of a submersible pump structure according to an embodiment of this application;

[0017] Figure 2 An exploded view of a submersible pump according to an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of a pump tube assembly structure according to an embodiment of this application;

[0019] Figure 4 A schematic diagram of an adjustment device according to an embodiment of this application; and

[0020] Figure 5 This is an exploded view of an adjustment device according to an embodiment of this application. Detailed Implementation

[0021] The principles and spirit of this application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided to make the principles and spirit of this application clearer and more thorough, enabling those skilled in the art to better understand and implement the principles and spirit of this application. The exemplary embodiments provided herein are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application.

[0022] In the following detailed description, reference can be made to the accompanying drawings, which form part of this application and illustrate specific embodiments of the present application. In the drawings, similar reference numerals describe substantially similar components in different figures. Specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to implement the technical solutions of the present application. It should be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to the embodiments of the present application. Furthermore, similar terms including "first," "second," and "third" in this application are used only to distinguish one entity (or operation) from another, and are not intended to require or imply any order or association between these entities (or operations).

[0023] This application proposes a novel pump pipe assembly. By arranging the electrical conduit and oil conduit in parallel and designing a completely new pump pipe adjustment device, the pump pipe can be adjusted using only a few sets of screws or similar fasteners. Operation is simple, effortless, and can be completed with a lightweight ordinary wrench. Assembly is convenient, saving labor costs, and subsequent maintenance is relatively easy, allowing for on-site maintenance. Furthermore, it reduces the frictional resistance of the oil flow, which helps reduce the operating power of the submersible pump, enabling the pump to output more oil with the same power consumption.

[0024] The technical solutions of this application are further illustrated below through specific embodiments. Those skilled in the art should understand that, based on the teachings of the following embodiments, other alternative solutions capable of achieving the same or similar functions are possible. These alternative solutions are also within the protection scope of this application.

[0025] Figure 1 This is a schematic diagram of a submersible pump structure according to an embodiment of this application. Figure 2 This is an exploded view of a submersible pump according to an embodiment of this application.

[0026] As shown in the figure, the submersible pump 100 includes a submersible motor 110, a pump pipe assembly 120, and a pump head 130. The submersible motor 110 can be installed in the oil storage tank, and the pump head 130 is installed on a riser structure at the top opening of the oil storage tank. The pump pipe assembly 120 connects the submersible motor 110 and the pump head 130. When refueling is required, after the submersible motor is powered on, it performs work on the oil, thereby pressurizing the oil and delivering it through the pump pipe and pump head into the refueling pipeline. The pump head 130 receives power and supplies it to the submersible motor through the pump pipe assembly, while simultaneously delivering the pressurized oil output by the submersible motor to the refueling machine. One end of the pump pipe assembly is connected to the pump head, and the other end is connected to the submersible motor, allowing the power supplied to the pump head to be connected to the submersible motor, and the pressurized oil output by the submersible motor to be delivered to the pump head.

[0027] The detailed structure of each part of the submersible pump will be described in detail below. As those skilled in the art will understand, this application does not improve the submersible motor, which can be any submersible motor of any structure in the art, and will not be described further here.

[0028] Figure 3 This is a schematic diagram of a pump tube assembly structure according to an embodiment of this application.

[0029] As shown in the figure, the pump pipe assembly 300 includes a pump pipe and a motor connector 330. The motor connector 330 is connected to one end of the pump pipe and can connect the pump pipe to the submersible motor, providing power to the submersible motor and outputting the oil delivered by the submersible motor.

[0030] In some embodiments, the pump pipe may include an oil passage pipe 310 and an electrical passage pipe 320. The electrical passage pipe 320 is disposed outside the oil passage pipe 310 and arranged parallel to it, thus ensuring that there are no parts within the oil passage pipe that encroach on the flow area, resulting in low frictional resistance to oil flow. This helps reduce the operating power of the submersible pump, allowing it to deliver more oil to the fuel dispenser with the same power consumption. For example, using a 2-inch pump pipe, compared to existing technologies, the flow area of ​​the oil passage pipe in this application can be increased by 18% to 39%. Furthermore, the electrical passage pipe's external location facilitates easy inspection. When problems are found with the electrical passage pipe or its cables, the electrical passage pipe can be easily and directly disassembled to troubleshoot, making inspection and subsequent maintenance convenient and flexible.

[0031] In some embodiments, the oil pipe 310 and the electrical pipe 320 are straight pipes, which may be made of seamless steel pipe or aluminum profile pipe, and the material may be Q235 or 6061 grade, etc. In some embodiments, both ends of the oil pipe 310 and the electrical pipe 320 are provided with connecting threads, which can be used to connect to the motor connector and the pump head. In some embodiments, the size of the oil pipe 310 may be 2 inches or other smaller sizes; the size of the electrical pipe 320 may not exceed 0.85 inches.

[0032] In some embodiments, the oil pipe 310 and the electrical pipe 320 can also be adjustable pump pipes, whose lengths can be adjusted to allow the submersible pump to be used in oil storage tanks of different sizes, increasing the applicability of the submersible pump. In some embodiments, the oil pipe 310 may include a first section of oil pipe 311 and a second section of oil pipe 312. One end of the first section of oil pipe 311 extends into the second section of oil pipe 312 from one end of the second section of oil pipe 312, and can extend and retract along the axial direction of the second section of oil pipe 312, thereby adjusting the length of the oil pipe; the electrical pipe 320 may include a first section of electrical pipe 321 and a second section of electrical pipe 322, one end of the first section of electrical pipe 321 extends into the second section of electrical pipe 322 from one end of the second section of electrical pipe 322, and can extend and retract along the axial direction of the second section of electrical pipe 322, thereby adjusting the length of the electrical pipe.

[0033] In some embodiments, the pump pipe assembly may further include an adjusting device 340, which may be disposed on the oil pipe 310 and / or the electrical pipe 320, and can adjust the length of the oil pipe and the electrical pipe. In some embodiments, the adjusting device 340 may include a first holding member, a second holding member, and a connector. The first holding member may be disposed at the end of the second oil pipe 312 that accommodates the first oil pipe 311, the second holding member is disposed on the first oil pipe 311, and the connector is connected between the first and second holding members to fix the distance between the first and second holding members. The connector can constrain the position and distance between the first and second holding members. When the second holding member is in a locked state, the first and second oil pipes are locked; when the second holding member is in an unlocked state, the first oil pipe can extend and retract axially along the second oil pipe. In some embodiments, the first holding member may also be disposed at the end of the second segment of the circuit tube 322 that accommodates the first segment of the circuit tube 321, and the second holding member may be disposed on the first segment of the circuit tube 321. In some embodiments, the first holding member and / or the second holding member extend at least partially outward to form a circuit tube receiving portion for accommodating the second segment of the circuit tube, which can prevent the circuit tube from shifting and allow the circuit tube to extend and retract with the oil pipe.

[0034] Combination Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of an adjustment device according to an embodiment of the present application. Figure 5 This is an exploded view of an adjustment device according to an embodiment of this application.

[0035] According to one embodiment of this application, the first holding member may include: a first clamp 341, a second clamp 342, and a first fastener 343. The first clamp 341 and the second clamp 342 can be clamped to one end of the second section of the oil pipe, and the first fastener 343 fastens the first clamp and the second clamp. The second holding member may include: a third clamp 344, a fourth clamp 345, and a second fastener 346. The third clamp 344 and the fourth clamp 345 can be clamped to the first section of the oil pipe, and the second fastener 346 fastens the third clamp 344 and the fourth clamp 345. The connecting member may be a first connecting piece 347 and a second connecting piece 348, which are connected between the first fastener and the second fastener. When the third clamp 344 and the fourth clamp 345 are clamped to the first section of the oil pipe, the first section of the oil pipe and the second section of the oil pipe are locked and cannot extend or retract. When the third clamp 344 and the fourth clamp 345 are not tightly fastened to the first section of the oil passage, the first section of the oil passage can extend and retract axially along the second section of the oil passage. In some embodiments, the first and second fasteners can be screws, such as screws with an M6 or M8 specification.

[0036] In some embodiments, when the first clamp 341 and the second clamp 342 can be clamped to one end of the second section of the oil pipe, and the third clamp 344 and the fourth clamp 345 can be clamped to the first section of the oil pipe, a certain gap is included between the first clamp and the second clamp, and between the third clamp and the fourth clamp, to ensure that they are clamped to the oil pipe. In some embodiments, the first connecting piece 347 and the second connecting piece 348 are disposed in the gap between the first clamp and the second clamp, and between the third clamp and the fourth clamp, and do not contact the first clamp, the second clamp, or the third clamp and the fourth clamp, to prevent failure to clamp the oil pipe.

[0037] In some embodiments, the end of the second oil passage pipe connected to the regulating device may further include a connecting portion for connecting with the first clamp 341 and the second clamp 342. In some embodiments, the connecting portion may include threads, thereby increasing the friction between the second oil passage pipe and the regulating device and increasing the connection strength. Correspondingly, the inner surfaces of the first clamp 341 and / or the second clamp 342 may also include threads.

[0038] In some embodiments, the circuit tube receiving portion may include a recess 349 extending outward from the first clamp 341 and / or the third clamp 344, and the second section of the circuit tube may be accommodated in the recess 349 to prevent the circuit tube from shifting during the extension and retraction process.

[0039] The adjusting device of this application requires only a few sets of fasteners to secure the two clamping parts into a locked state. The fastening operation is simple, easy, and labor-saving. The adjusting device, with its outwardly extending recess, allows other pipelines, such as the conduit for a submersible motor, to pass through, thus creating flow space inside the oil pipe. Furthermore, the adjusting device of this application can be easily assembled and disassembled on the pump pipe, and in case of component damage, it can be replaced on-site at the gas station, making its use and maintenance flexible.

[0040] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A pump pipe assembly for a submersible pump, characterized in that, include: The oil pipe includes a first section of oil pipe and a second section of oil pipe. One end of the first section of oil pipe extends into the second section of oil pipe from the first end of the second section of oil pipe and can extend and retract along the axial direction of the second section of oil pipe. The circuit tube is disposed outside the oil circuit tube and is arranged parallel to the oil circuit tube. It includes a first circuit tube and a second circuit tube. One end of the first circuit tube extends into the second circuit tube from the third end of the second circuit tube and can extend and retract along the axial direction of the second circuit tube. The system comprises a first holding member, a second holding member, and a connecting member. The first holding member is disposed at the end of the second section of the oil pipe that accommodates the first section of the oil pipe. The second holding member is disposed on the first section of the oil pipe. The connecting member connects the first holding member and the second holding member to fix the distance between the first holding member and the second holding member. When the second holding member is in a locked state, the first section of the oil pipe and the second section of the oil pipe are locked. When the second holding member is in an unlocked state, the first section of the oil pipe can extend and retract axially along the second section of the oil pipe.

2. The pump tubing assembly for a submersible pump according to claim 1, characterized in that, The first holding member and / or the second holding member extend at least partially outward to form a circuit tube receiving portion to receive the second circuit tube segment.

3. The pump tubing assembly for a submersible pump according to claim 1, characterized in that, The first end of the second section of the oil pipe includes a connecting part for connecting to the first holding member.

4. The pump tubing assembly for a submersible pump according to claim 3, characterized in that, The connection includes threads.

5. The pump tubing assembly for a submersible pump according to claim 2, characterized in that, The first holding member includes: a first clamp, a second clamp, and a first fastener. The first clamp and the second clamp are clamped to the first end of the second section of the oil pipe, and the first fastener secures the first clamp and the second clamp.

6. The pump tubing assembly for a submersible pump according to claim 5, characterized in that, The second holding member includes a third clamp, a fourth clamp, and a second fastener. The third clamp and the fourth clamp are clamped onto the first section of the oil pipe, and the second fastener secures the third clamp and the fourth clamp.

7. The pump tubing assembly for a submersible pump according to claim 6, characterized in that, The connector is connected to the first fastener and the second fastener.

8. The pump tubing assembly for a submersible pump according to claim 7, characterized in that, The circuit tube receiving portion includes a recess extending outward from the first clamp and / or the third clamp, and the second section of the circuit tube is received in the recess.

9. A submersible pump, characterized in that, include: The pump tubing assembly for a submersible pump as described in any one of claims 1-8.

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