Integral reluctance motor high pressure plunger pump

Abstract

This invention relates to the field of plunger pump technology, specifically to an integrated reluctance motor high-pressure plunger pump, comprising a main pumping section and a booster section. The main pumping section is connected forward to an interface component and rearward to the booster section. The booster section has a pump inlet and a pump outlet. The main pumping section includes a main housing assembly, a rotor assembly, and a stator assembly. The stator assembly is disposed around and fixed to the inner wall of the main housing assembly, and the rotor assembly is located in the inner ring of the stator assembly and connected to the booster section. This invention uses a pump-type reluctance motor for drive. The pump-type reluctance motor itself can perform the function of pumping fluid, and at the same time, the torque transmitted by its shaft can drive the plunger pump to output high-pressure fluid, realizing secondary pressurization of the fluid. The overall structure is compact, easy to install, has low noise, and low overall cost. The pump-type reluctance motor is immersed in the fluid to achieve self-cooling, resulting in low overall temperature rise and long service life.

Description

Technical Field

[0001] This invention relates to the field of plunger pump technology, and more specifically to an integrated reluctance motor high-pressure plunger pump. Background Technology

[0002] With the booming development of the industrial control industry, the application fields of motors are constantly expanding. At the same time, in order to adapt to the needs of different working conditions, the structure of motors is also gradually developing towards lightweight, integrated and modular directions, in order to output higher power and achieve more functions in a smaller space.

[0003] Most common pumps and motors adopt a split-type structure design, meaning that the motor drives the pump body to operate, causing the internal impeller to rotate and perform work to extract and pump fluid. This traditional drive structure and method has the following drawbacks:

[0004] 1) There is a significant energy loss during the transmission process;

[0005] 2) Both the motor and the pump occupy their own space, resulting in a large overall size.

[0006] There are also cases on the market where the pump and motor are designed as a single unit, but the overall structure is complex and has a series of problems such as difficulty in heat dissipation and short service life. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated reluctance motor high-pressure plunger pump to solve the above-mentioned technical problems.

[0008] The technical problem solved by this invention can be achieved by the following technical solutions:

[0009] An integrated reluctance motor high-pressure plunger pump includes a main pumping section and a booster section. The main pumping section is connected to an interface piece in the front, which facilitates connection to an external fluid source. The external fluid source includes a supply device or pipeline for supplying fluid. The main pumping section is connected to the booster section in the rear, which facilitates secondary pressurization to achieve a stable pumping effect.

[0010] The booster unit has a pump inlet and a pump outlet. The pump inlet facilitates the entry of fluid used for secondary boosting, and the pump outlet serves as the total fluid outlet of the reluctance motor high-pressure plunger pump.

[0011] The main pumping unit includes a main housing assembly, a rotor assembly, and a stator assembly. The stator assembly is disposed around and fixed on the inner wall of the main housing assembly, and the rotor assembly is located in the inner ring of the stator assembly and connected to the booster unit.

[0012] This invention provides pumping power through the main pumping unit and secondary pressurization power through the pressurization unit, thereby achieving stable fluid transport. The overall structure is an integrated design, which, compared with traditional split-structure pumping equipment, allows for better control of equipment size, lower power loss, better heat dissipation, and longer service life.

[0013] The main housing assembly has a guide plate inside, which is connected to and fixed to the front end of the main housing assembly.

[0014] This invention utilizes a guide plate to direct the flow of fluid entering the main pumping section (from the interface or the front end of the main pumping section). This allows the fluid to flow orderly into the pumping chamber between the stator and rotor assemblies, preventing localized turbulence and thus avoiding flow rate reduction and energy loss. The guide plate's surface features guide grooves to direct the fluid flow. When the guide plate is positioned, the guide grooves are aligned with the area between the stator and rotor assemblies behind it (this area can be considered the pumping chamber), allowing the fluid guided by the guide plate to flow into it and participate in pumping. Additionally, it also protects the bearing structures at both ends of the rotor assembly.

[0015] The main housing assembly includes a first outer shell and a second outer shell. The first outer shell is connected forward to the second outer shell and backward to the pressurization unit (specifically connected to the outer shell of the pressurization unit, i.e., connected to the pump housing mentioned below).

[0016] The interface component is connected to the front end of the second housing.

[0017] The second outer shell has a hollow conical structure with fastener through holes on its edge, which facilitates fixing the second outer shell and the first outer shell together with fasteners;

[0018] The outer wall of the first housing is provided with fastener holes to facilitate the screwing in of fasteners.

[0019] By setting the second outer shell to a conical structure, the present invention not only protects the guide plate, but also guides the fluid flowing into the inner cavity of the main pumping section through the interface, so that it flows evenly to the guide plate, and then flows into the pumping chamber constructed by the stator assembly and the rotor assembly after being further evenly distributed by the guide plate.

[0020] The main housing assembly includes a main housing end cap, which is located between the first outer shell and the second outer shell;

[0021] The front end face of the main housing end cap is provided with a positioning post, and the guide plate is provided with a positioning hole corresponding to the positioning post. When the guide plate is set at the front end of the main housing assembly, the positioning post is inserted into the positioning hole to realize the installation and fixation of the guide plate.

[0022] The pressurization unit employs a swashplate piston pump. When using a swashplate piston pump as the pressurization unit in this invention, since the swashplate piston pump is a general-purpose device, its specific structure will not be described in detail.

[0023] The stator assembly includes a stator silicon steel sheet group, a front stator end plate, and a rear stator end plate. The front stator end plate and the rear stator end plate are respectively disposed at the front end and the rear end of the stator silicon steel sheet group, so as to provide insulation, limiting and fixing functions for the stator silicon steel sheet group at both ends.

[0024] The stator silicon steel sheet assembly includes stator teeth and a stator yoke. The stator teeth are provided with winding coils and are disposed on the stator yoke.

[0025] The rotor assembly includes a rotor silicon steel sheet assembly and a rotor shaft. The rotor silicon steel sheet assembly includes a rotor yoke and rotor teeth. The rotor yoke is hollow and has an annular outer wall. The rotor shaft passes through the hollow part of the rotor yoke. The rotor teeth are evenly arranged around the annular outer wall of the rotor yoke, and adjacent rotor teeth are spaced at equal intervals.

[0026] The rotor shaft is provided with bearings at its front and rear ends, and the bearings are fixed to the main housing assembly.

[0027] In this invention, the rotor teeth serve as the impeller of the main pumping section. When rotating, they generate a pumping action to pump the fluid flowing into them backward. The gap formed between the rotor teeth and the stator assembly is shaped into a pumping chamber.

[0028] The rotor assembly includes a rotor tooth holder, on which are provided insert teeth for easy insertion into the gap between adjacent rotor teeth, the insert teeth having an inclined surface.

[0029] This invention uses inclined teeth that fit into the toothed frame between the rotor teeth to fill the gaps. The size of the gaps can be adjusted, and the angle of the inclined surfaces can be adjusted to accommodate rotor assembly structures with different gap sizes. This allows for adjustment of the fluid flow direction during pumping to achieve better overall pumping performance.

[0030] Beneficial effects: Due to the adoption of the above technical solution, this invention uses a pump-type reluctance motor for driving. The pump-type reluctance motor itself can perform the function of pumping fluid, and at the same time, the torque transmitted by its shaft can drive the plunger pump to output high-pressure fluid, realizing secondary pressurization of the fluid; the overall structure is compact, easy to install, with low noise, and low overall cost; the pump-type reluctance motor is immersed in the fluid to achieve self-cooling, with low overall temperature rise and long service life. In summary, this invention has the following advantages:

[0031] 1) It adopts an integrated structure, which is compact, easy to install, and has a small overall size;

[0032] 2) It adopts a direct drive structure, and the motor output torque is directly used to do work, resulting in less energy loss;

[0033] 3) It adopts a lightweight structure, which is simple and has a low overall cost;

[0034] 4) It adopts a non-permanent magnet structure, is resistant to high temperatures, and has a long service life;

[0035] 5) It adopts a streamlined structure, provides overall sound insulation, and has low operating noise. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 for Figure 1 Exploded view;

[0038] Figure 3 This is an exploded view of the stator assembly and rotor assembly of the present invention;

[0039] Figure 4 This is an exploded view of the pressurization section of the present invention;

[0040] Figure 5 This is an assembly view of the deflector side of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the main housing end cap of the present invention;

[0042] Figure 7 This is a schematic diagram of the assembly of the rotor silicon steel sheet assembly and the rotor tooth frame of the present invention;

[0043] Figure 8 for Figure 7 Disassembly view;

[0044] Figure 9 This is a schematic diagram of the stator assembly of the present invention;

[0045] Figure 10 This is a schematic diagram of the front end face of the guide plate of the present invention;

[0046] Figure 11 This is a schematic diagram of the rear end face of the guide plate of the present invention;

[0047] Figure 12 This is a schematic diagram of the stator assembly and rotor assembly forming a first gap according to the present invention;

[0048] Figure 13 This is a schematic diagram of the stator assembly and rotor assembly forming a second gap according to the present invention. Detailed Implementation

[0049] To make the technical means, inventive features, achieved objectives, and effects of this invention readily understandable, the invention is further described below in conjunction with specific illustrations. It should be noted that the terms "first," "second," "third," "fourth," etc. (if present) in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" or "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a product or device comprising a series of components or units is not necessarily limited to those components or units explicitly listed, but may include other components or units not explicitly listed or inherent to such products or devices.

[0050] Reference Figure 1 , Figure 2 The integrated reluctance motor high-pressure plunger pump includes a main pumping section 100 and a booster section 200. The main pumping section 100 is connected to an interface 3 in the front, which facilitates the connection to an external fluid source (not shown in the figure) through the interface 3. The external fluid source includes a supply device or pipeline for supplying fluid.

[0051] The main pumping unit 100 is connected to the booster unit 200 at the rear, which facilitates secondary pressurization through the booster unit 200 to achieve a stable pumping effect.

[0052] The booster unit 200 has a pump inlet 2001 and a pump outlet 2002. The pump inlet 2001 is used as the inlet for the secondary boosted fluid, and the pump outlet 2002 is the total fluid outlet of the reluctance motor high-pressure plunger pump.

[0053] The main pumping unit 100 includes a main housing assembly 101, a rotor assembly 102, and a stator assembly 103. The stator assembly 103 is disposed around and fixed to the inner wall of the main housing assembly 101, and the rotor assembly 102 is located in the inner ring of the stator assembly 103 and connected to the booster unit 200.

[0054] The stator assembly of the present invention is configured as follows: Figure 2 , Figure 3 , Figure 9 As shown, the stator assembly 103 includes a stator silicon steel sheet group 1031, a front stator end plate 10321, and a rear stator end plate 10322. The front stator end plate 10321 and the rear stator end plate 10322 are respectively disposed at the front end and the rear end of the stator silicon steel sheet group 1031. The two plates clamp the stator silicon steel sheet group 1031 and fix it, which facilitates the insulation, limiting and fixing functions of the stator silicon steel sheet group 1031 at both ends.

[0055] like Figure 9 As shown, the stator silicon steel sheet assembly 1031 includes stator teeth 10311 and stator yoke 10312. The stator teeth 10311 are provided with winding coils 10313. The stator teeth 10311 are disposed on the stator yoke 10312, located on the annular inner wall of the stator yoke 10312, and are evenly distributed. Figure 9 In the structure shown, the stator yoke 10312 is a hollow straight cylinder with an annular cross-section. Multiple protrusions are arranged around its inner wall to form stator teeth 10311, which facilitates the winding of the coil into a winding.

[0056] In addition, the outer wall of the stator yoke 10312 is provided with a plurality of slots 1031201 for easy bolt insertion. After the bolts connect the first outer shell 1011 and the second outer shell 1012 of the main housing assembly 101, the stator yoke 10312 is secured to the bolts through the slots 1031201 thereon, thereby fixing the stator assembly.

[0057] It should be noted that the number of slots on the outer wall of the stator yoke is not less than the number of bolts used to fix the first and second housings, and the slot positions satisfy the following condition: after the bolts connect and fix the first and second housings, any bolt must be embedded in one of its slots. In some embodiments, the slots are evenly distributed around the outer wall of the stator yoke.

[0058] Figure 3 In the structure shown, both the front and rear stator end plates are provided with outward-facing insert teeth, which facilitates insertion into the main housing assembly during assembly (for example, the insert teeth of the front stator end plate extend forward, allowing it to be inserted into the corresponding slot in the main housing end cover during assembly, while the rear stator end plate extends backward, allowing it to be inserted into the slot in the partition plate built into the inner cavity of the first housing). The two stator end plates are also provided with slots corresponding to the grooves on the stator yoke, which facilitates the embedding of bolts used to connect the first and second housings into the slots, thereby reinforcing the structural connection.

[0059] The rotor assembly of the present invention is configured as follows: Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, the rotor assembly 102 includes a rotor silicon steel sheet group 1021 and a rotor shaft 1022. The rotor silicon steel sheet group 1021 includes a rotor yoke 10211 and rotor teeth 10212. The rotor yoke 10211 is hollow and has an annular outer wall. The rotor shaft 1022 passes through the hollow part of the rotor yoke 10211. The rotor teeth 10212 are evenly arranged around the annular outer wall of the rotor yoke 10211, and the adjacent rotor teeth 10212 are spaced at equal distances.

[0060] The rotor shaft 1022 has bearings at its front and rear ends, and the bearings are fixed to the main housing assembly. Figure 3The structure shown includes a front bearing 10241 located at the front end of the rotor shaft and a rear bearing 10242 located at the rear end of the rotor shaft. The front bearing 10241 is equipped with a bearing end cover 10251, and the rear bearing 10242 is equipped with a bearing end cover 10252.

[0061] It should be noted that the rotor shaft and the rotor silicon steel sheet assembly are connected by a spline structure. That is to say, the outer wall of the rotor shaft is provided with a raised key or a recessed keyway, while the inner wall of the hollow structure of the corresponding rotor yoke is provided with a keyway or a key. The rotor shaft passes through the rotor yoke to achieve the connection and linkage between the two.

[0062] In this invention, the rotor teeth serve as the impeller of the main pumping section. When rotating, they create a pumping action, pushing the fluid flowing into them backward. The gap between the rotor teeth and the stator assembly forms a pumping chamber. For example... Figure 12 , Figure 13 The structure shown illustrates the positional change of the rotor assembly relative to the stator assembly as it rotates, such as when any rotor tooth rotates to a position opposite the stator tooth. Figure 12 As shown, a first gap A is formed. When any rotor tooth moves out of its relative position with the stator tooth, as... Figure 13 As shown, the recessed structure between adjacent rotor teeth forms a second gap B with the stator teeth. It can be observed that the cavity volume corresponding to the second gap B gradually increases or decreases as the rotor assembly rotates. Figure 13 The height of the second gap B in the structure shown is the maximum height of the second gap (height here refers to the vertical height in the orientation system of the structure shown, also known as the gap width, or simply "width"; this explanation will be used when discussing gap dimensions later). At this time, the tooth surface of the stator teeth is directly opposite the bottom surface of the recessed structure between adjacent rotor teeth. As the rotor assembly rotates, the size of the cavity corresponding to the gap between the rotor teeth and stator teeth gradually changes (from large to small or from small to large), and the size of the cavity corresponding to the gap changes alternately, thereby continuously compressing and releasing the space within the gap, realizing the extraction and pumping of fluid within it. Then, through the secondary pressurization effect of the pressurization unit, the flow rate and pressure of the fluid are further increased.

[0063] In this invention, the maximum height (width) of the second gap B is not less than 20 times the height (width) of the first gap A. Here, the gap height or width refers to the distance between the tooth surface of the stator teeth and the tooth surface of the rotor teeth, or the bottom surface of the recessed structure between adjacent rotor teeth, in the illustrated structure. Figure 12 The middle section is marked with opposing arrows. Figure 13 The middle part is marked with a reverse arrow.

[0064] To achieve the structural design of rotor assemblies of different specifications and sizes, making the gap between adjacent rotor teeth adjustable, thereby adjusting the gap corresponding to the cavity and thus adjusting the pumping performance, the present invention can be configured as follows: Figure 7 , Figure 8 As shown, the rotor assembly 102 includes a rotor tooth holder 1023, on which are provided insert teeth 10231 for easy insertion into the gap between adjacent rotor teeth. The insert teeth 10231 have an inclined surface. In the illustrated structure, the rotor tooth holder is a ring structure, with multiple insert teeth 10231 protruding along the edge on one side of the ring end face, and the spacing between adjacent insert teeth 10231 satisfies the following condition: after the rotor tooth holder is assembled, a rotor tooth can be inserted between adjacent insert teeth 10231.

[0065] This invention uses a rotor tooth slot frame, which fills the gaps between adjacent rotor teeth by inserting its teeth into the rotor silicon steel sheet assembly. When the teeth are inserted into the gaps between adjacent rotor teeth, the bottom surface of the recessed structure formed between the adjacent rotor teeth is transformed into an inclined surface by the inclined surface of the teeth (this inclined surface is the inclined surface of the teeth). When the fluid is pumped, it forms a directional flow tendency through the inclined surface.

[0066] It should be noted that the inserts on the rotor tooth holder are used to fill the gaps between adjacent rotor teeth, thus improving flow guidance. They can be designed with different shapes and sizes to correspond to the gaps between adjacent rotor teeth, depending on the application requirements. They can also be designed as separate or integral structures depending on the manufacturing process. The structure illustrated in this invention is a separate structure. An integral structure means that the rotor silicon steel sheet assembly and the rotor tooth holder are manufactured as a single unit during rotor assembly manufacturing. In this case, only the bottom surface of the recessed structure formed between adjacent rotor teeth needs to be manufactured as an inclined surface, eliminating the need to manufacture the annular frame of the tooth holder. Compared to the integral structure, the separate design of the rotor tooth holder and rotor silicon steel sheet assembly allows for dimensional control of the inclined angle of the inclined surface and the length of the inserts, thus providing more flexible adjustment to the requirements of different fluid transport processes or to accommodate rotor silicon steel sheet assemblies of different specifications and sizes.

[0067] In this invention, the insert teeth can be configured as wedge-shaped teeth, such as... Figure 8 , Figure 9 As shown in the structure, it can be observed that the side of the tooth 10231 is narrow at the front and wide at the back, and its cross-sectional shape is approximately triangular, so that its outward-facing surface (relative to the side facing the gap between adjacent rotor teeth) is inclined.

[0068] To ensure uniform dispersion of the fluid flowing into the inner cavity of the main pumping section and prevent localized turbulence that could affect pumping performance and extend equipment lifespan, this invention can be structurally configured as follows: Figure 2 , Figure 5 , Figure 10 , Figure 11 As shown, a guide plate 4 is provided inside the main housing assembly 101. The guide plate 4 is connected to the front end of the main housing assembly 101 and fixed thereon.

[0069] Specifically, such as Figure 2 , Figure 3 As shown, the rotor assembly 102 is mounted on the main housing assembly 101 via bearing structures at both ends. A guide plate 4 is provided on the front side of the front end of the rotor assembly 102. The rear end of the rotor assembly 102 is connected to the rotating structure of the booster unit 200 (for example, when the booster unit 200 mentioned later adopts a swashplate plunger pump, the rear end of the rotor assembly 102 is connected to the pump input shaft to obtain the secondary boosting effect provided by the plunger pump).

[0070] In some of these embodiments, such as Figure 10 , Figure 11 As shown, the guide plate is configured as follows: it has an overall conical structure, and multiple guide grooves 401 are evenly arranged around the outer wall of the conical surface. In the structure shown, four guide grooves 401 are evenly arranged on the outer wall of the conical surface.

[0071] In some preferred embodiments, the guide plate is configured as a cone structure, with guide grooves evenly distributed on its conical surface. Each guide groove extends from the apex to the bottom of the cone.

[0072] By setting up guide plates to direct the fluid flowing into the inner cavity of the main pumping section (from the interface component or the front end of the main pumping section), the fluid flows orderly into the pumping chamber between the stator assembly and the rotor assembly, avoiding the formation of turbulence in local areas and preventing flow rate slowdown and energy loss. Figure 5 , Figure 10 In the structure shown, the guide groove 401 of the guide plate 4 is aligned with the position between the stator assembly and the rotor assembly located behind it, so that the fluid guided by the guide plate flows into it to participate in pumping.

[0073] In addition, it can also protect the bearing structures at both ends of the rotor assembly.

[0074] The present invention provides more reasonable protection for the rotor assembly, stator assembly, and guide vanes by arranging the main housing assembly according to the following structure: Figure 2 As shown, the main housing assembly 101 includes a first housing 1011 and a second housing 1012. The first housing 1011 is connected forward to the second housing 1012 and backward to the booster unit 200 (specifically connected to the housing of the booster unit, i.e., connected to the pump housing mentioned below).

[0075] Interface component 3 connects to the front end of the second housing 1012. In the illustrated structure, the front end of the second housing 1012 is formed with an opening. The outer wall of this opening can be provided with external threads, which, when combined with the internal threads provided on the interface component, enable a quick threaded connection between the two. The opening at the opening is a through-hole structure.

[0076] The present invention can be further configured with a second outer shell structure as follows: to match the shape of the guide plate, the second outer shell 1012 can be configured as a hollow conical structure with fastener through holes on its edge, facilitating the fixing of the second outer shell 1012 and the first outer shell 1011 together with fasteners; the outer wall of the first outer shell 1011 is provided with fastener holes for easy screwing in of fasteners. By configuring the second outer shell as a conical structure, not only is the guide plate protected, but it can also guide the fluid flowing into the inner cavity of the main pumping section through the interface, making it flow evenly to the guide plate, and then further evenly distributed by the guide plate before flowing into the pumping chamber constructed by the stator assembly and the rotor assembly.

[0077] Specifically, the fastener holes of the second housing 1012 are generally through holes, and the fasteners are generally bolts. After the gasket and sealing ring are inserted, the bolts pass through the fastener holes and are screwed into the fastener holes of the first housing 1011 to lock them in place. The fastener holes on the outer wall of the first housing 1011 are provided with internal threads, which cooperate with the external threads of the bolts to tightly fix the first housing 1011 and the second housing 1012 together.

[0078] In addition, the first outer shell 1011 can be configured as a hollow cylindrical structure, which is connected forward to the second outer shell 1012, and the outer shell of the pressurization unit 200 is connected to the rear end of the first outer shell 1011.

[0079] To better facilitate the installation of the air deflector, the present invention can be configured as follows: (e.g.) Figure 2 , Figure 5 , Figure 6 As shown, the main housing assembly 101 includes a main housing end cap 1013, which is located between the first outer shell 1011 and the second outer shell 1012;

[0080] Figure 6 In the structure shown, the front end face of the main housing end cover 1013 is provided with a positioning post 10131, and the guide plate 4 is provided with a positioning hole 402 corresponding to the positioning post 10131. When the guide plate 4 is set at the front end of the main housing assembly 101, the positioning post 10131 is inserted into the positioning hole 402 to realize the installation and fixation of the guide plate 4.

[0081] It should be noted that when setting the main housing end cover, a mounting groove can be provided on its rear end face to facilitate the embedding of the bearing housing, allowing the bearing housing to be embedded therein (or the bearing housing structure can be directly formed on the rear end face of the main housing end cover, i.e., the bearing housing is formed by casting during the main housing end cover forming process), and then the bearing is fixed to construct the bearing structure at the front end of the rotor assembly. The bearing structure at the rear end of the rotor assembly is achieved by the bearing housing and bearing being built into the first housing. For example, a partition structure can be set in the first housing, with a hole opened at the center of the partition to form the bearing housing, and then the bearing at the rear end of the rotor assembly can be embedded. This part of the structure can also be regarded as an integrally formed rear end cover structure at the rear end of the first housing (here, the rear end cover structure is relative to the main housing end cover which serves as the front end cover), on which the bearing housing and bearing located at the rear end of the rotor assembly are placed.

[0082] Fastener holes are provided on the rear end structure (or rear end cover structure) of the first housing to facilitate the connection of the first housing and the housing of the pressurization unit located thereafter by means of fasteners (such as bolts).

[0083] Additionally, when installing the end caps of the main housing, such as Figure 6 As shown, a through hole 10132 is provided on the end cover 1013 of the main housing, which penetrates its front and rear surfaces. The through hole 10132 and the guide groove 401 of the guide plate 4 correspond one-to-one, so that the fluid can flow into the pumping chamber formed by the gap between the rotor assembly 102 and the stator assembly 103.

[0084] It should be noted that, without setting the end cap of the main housing, the guide plate can also be installed by setting a partition on the inner wall of the front part of the first housing. In this case, positioning stakes are set on the partition to fix the guide plate, and holes such as bearing seats and fluid inflow channels are set on the partition.

[0085] The pressurization section of this invention employs a swashplate piston pump. In some embodiments, such as... Figure 4 As shown, the booster unit 200 includes a pump housing 201, a pump input shaft 202, a pump swashplate 203, a pump chamber component 204, and a pump end cover 205. The pump input shaft 202 and the pump swashplate 203 are both disposed inside the pump housing 201, and the pump chamber component 204 is connected forward to the pump housing 201.

[0086] The pump chamber 204 has a plunger rod 206 inside, which is connected forward to the pump input shaft 202 via the pump swashplate 203. The pump input shaft 202 is connected forward to the rotor assembly 102.

[0087] The pump chamber component 204 is rearwardly connected to and sealed by the pump end cover 205.

[0088] The outer wall of the pump chamber component 204 is provided with a pump inlet 2001 and a pump outlet 2002, which are connected to the inner cavity of the pump chamber component 204.

[0089] To stabilize the operation of the pump input shaft, the pump input shaft 202 can be connected to the pump swashplate 203 via the pump bearing 207. After the front of the pump housing 201 is equipped with a partition, a bearing seat is set at its center to fix the bearing. After the bearing is installed, a bearing fixing plate 208 is set on the rear side, so that it is located between the partition and the pump swashplate, and is used to fix the bearing in the bearing seat of the partition from the rear side.

[0090] When the present invention uses a swashplate piston pump as the booster unit, since the swashplate piston pump is a general-purpose device, its specific structure will not be described in further detail.

[0091] It should be noted that, to achieve the connection between the rotor assembly and the booster section, the present invention can be configured as follows: (e.g.) Figure 2 As shown, the rotor assembly 102 is connected to the booster unit 200 via a coupling 5.

[0092] Specifically, such as Figure 2 , Figure 4 As shown, coupling 5 connects the rotor shaft 1022 and the pump input shaft 202 together. After the entire machine is assembled, coupling 5 is generally located at the rear of the main housing assembly 101, behind the rear bearing of the rotor shaft 1022.

[0093] In summary, this invention integrates the pump and motor into a single unit. The main pumping section of the reluctance motor provides pumping power. Leveraging the salient pole structure of the reluctance motor's rotor, the rotor serves as the pump impeller, and the stator as the pump cavity. A booster unit provides secondary boosting power, enabling stable fluid transport. The integrated design, compared to traditional split-structure pumping equipment, results in better volume control, lower power loss, better heat dissipation, and a longer lifespan.

[0094] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An integrated reluctance motor high-pressure plunger pump, characterized in that, The system includes a main pumping section and a booster section. The main pumping section is connected forward to an interface for connecting to an external fluid source. The main pumping section is connected rearward to the booster section for secondary pressurization. The booster section has a pump inlet and a pump outlet. The pump inlet serves as the entry point for the secondary pressurized fluid, and the pump outlet serves as the overall fluid outlet for the reluctance motor high-pressure plunger pump. The main pumping section includes a main housing assembly, a rotor assembly, and a stator assembly. The stator assembly is disposed around and fixed to the inner wall of the main housing assembly, and the rotor assembly is located on the inner ring of the stator assembly and connected to the booster section. The stator assembly includes a stator silicon steel sheet group, a front stator end plate, and a rear stator end plate, wherein the front stator end plate and the rear stator end plate are respectively disposed at the front end and the rear end of the stator silicon steel sheet group; the stator silicon steel sheet group includes stator teeth and a stator yoke, wherein the stator teeth are provided with winding coils, and the stator teeth are disposed on the stator yoke; The rotor assembly includes a rotor silicon steel sheet assembly, which includes a rotor yoke and rotor teeth. The rotor teeth serve as the impeller of the main pumping section, and the gap formed between the rotor teeth and the stator assembly is shaped into a pumping chamber, which works in conjunction with the booster section to provide secondary boosting power. The booster section includes a pump housing and a pump input shaft, with the pump input shaft located inside the pump housing. The rotor assembly is connected to the pump input shaft via a coupling. The main housing assembly has a guide plate inside, which is connected to and fixed to the front end of the main housing assembly; the main housing assembly includes a first outer shell and a second outer shell, with the first outer shell connected forward to the second outer shell; the second outer shell has a hollow conical structure; the guide plate is set as a conical structure as a whole, with guide grooves evenly opened on its conical surface; any guide groove extends from the top to the bottom of the cone on the conical surface; The rotor assembly includes a rotor tooth holder, which is a ring structure. Multiple insert teeth are protruded along the edge on one side of the ring end face of the rotor tooth holder. A rotor tooth can be inserted between adjacent insert teeth. The side surface of the insert teeth facing the gap between adjacent rotor teeth is inclined. The rotor tooth holder and the rotor silicon steel sheet assembly are designed separately.

2. The integrated reluctance motor high-pressure plunger pump according to claim 1, characterized in that, The first housing is connected to the pressurization unit at the rear; the interface component is connected to the front end of the second housing.

3. The integrated reluctance motor high-pressure plunger pump according to claim 2, characterized in that, The edge of the second housing is provided with fastener through holes; the outer wall of the first housing is provided with fastener holes to facilitate the screwing in of fasteners.

4. The integrated reluctance motor high-pressure plunger pump according to claim 2 or 3, characterized in that, The main housing assembly includes a main housing end cap located between the first outer shell and the second outer shell; the front end face of the main housing end cap is provided with a positioning post, and the guide plate is provided with a positioning hole corresponding to the positioning post; when the guide plate is disposed at the front end of the main housing assembly, the positioning post is inserted into the positioning hole.

5. The integrated reluctance motor high-pressure plunger pump according to claim 1, characterized in that, The pressurization section uses a swashplate piston pump.

6. The integrated reluctance motor high-pressure plunger pump according to claim 1, characterized in that, The rotor assembly further includes a rotor shaft. The rotor yoke is hollow and has an annular outer wall. The rotor shaft passes through the hollow part of the rotor yoke. The rotor teeth are evenly arranged around the annular outer wall of the rotor yoke, and the adjacent rotor teeth are spaced at equal distances. The front and rear ends of the rotor shaft are respectively provided with bearings, and the bearings are fixed to the main housing assembly.

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