Annular diaphragm supercharger

Abstract

The utility model discloses an annular diaphragm supercharger, and relates to the technical field of superchargers, the annular diaphragm supercharger comprises a driving end and a fluid end, the fluid end comprises a supercharging cylinder body, and a plurality of cavities are arranged in the supercharging cylinder body; the driving end is provided with a crankshaft connecting rod crosshead assembly, and the fluid end is provided with an annular diaphragm assembly. The annular diaphragm assembly comprises an inner cylinder body, an annular groove is formed in the outer diameter of the inner cylinder body, flanges are arranged at the two ends of an annular diaphragm for axial installation and fixation, and an outer cylinder body is arranged on the annular diaphragm. An inlet one-way valve is arranged at the bottom of the cavity; a diaphragm cylinder body sealing packing assembly is arranged at one end of the inner cylinder body and comprises a hydraulic plunger type cylinder sleeve and a hydraulic plunger, the hydraulic plunger is connected with a driving plunger assembly, a compensation one-way valve is arranged on the hydraulic plunger, and a diaphragm self-adaptive overflow valve is assembled at the position of the outer cylinder body. The small-diameter annular diaphragm is used for the annular diaphragm supercharger, and the problems that a traditional diaphragm supercharger is difficult to arrange, and axial fastening is not facilitated due to the large load on a limiting plate are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of superchargers, in particular to an annular diaphragm supercharger. Background Art

[0002] Traditional hydraulically driven diaphragm boosters invariably utilize a circular diaphragm, which is clamped around two restraining plates to form a cylinder. The hydraulically driven reciprocating motion of the diaphragm compresses or conveys the medium. This structure essentially involves a plunger transmitting hydraulic power to the diaphragm. The larger the diameter of the diaphragm, the greater the hydraulic load on the restraining plates. This significant hydraulic load has become a design obstacle for the unit. Furthermore, as the diameter of existing circular diaphragms increases, the diameter of the restraining plates surrounding the diaphragm booster increases accordingly. Furthermore, the high pressure increases the thickness of the restraining plates, necessitating high-strength bolts for axial fastening, which limits the unit's structural layout.

[0003] When the diaphragm chamber of a traditional hydraulically driven diaphragm booster is in operation, the oil needs to overflow and be replenished. The excess oil from the diaphragm chamber overflows into the bottom oil tank, and then is pumped out from the oil tank and injected into the diaphragm chamber. The high-pressure oil overflows into the normal-pressure oil tank, and is then pressurized by an external pump and injected into the diaphragm chamber, resulting in a waste of hydraulic power and not conducive to energy saving.

[0004] To this end, we propose an annular diaphragm booster. Summary of the Invention

[0005] The object of the present invention is to provide an annular diaphragm booster to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an annular diaphragm supercharger, comprising a driving end and a hydraulic end, wherein the hydraulic end cylinder body is provided with multiple cavities, a crankshaft connecting rod crosshead assembly is installed at the driving end, and an annular diaphragm assembly is installed at the hydraulic end; the annular diaphragm assembly comprises an inner cylinder body, the outer side of the inner cylinder body is wrapped with an annular diaphragm, an outer cylinder body is provided on the outer side of the annular diaphragm, and a cylinder head is installed at the front end of the outer cylinder body, an inlet one-way valve for fluid inflow is provided at the bottom of the cavity, and an outlet one-way valve for fluid discharge is provided at the top of the cavity; one end of the inner cylinder body is connected to a diaphragm cylinder body sealing packing assembly, the diaphragm cylinder body sealing packing assembly comprises a hydraulic plunger cylinder sleeve and a hydraulic plunger, and the hydraulic plunger is connected to the driving plunger assembly, a compensation one-way valve is connected to the hydraulic plunger, a diaphragm adaptive overflow valve is assembled at the cavity, and one end of the diaphragm adaptive overflow valve is connected to the compensation one-way valve.

[0007] Preferably, a sealing stuffing box is installed at one end of the hydraulic plunger cylinder sleeve, and the sealing stuffing box is filled with sealing stuffing.

[0008] Preferably, a diaphragm sealing ring is provided on the outer side of the annular diaphragm, and a hydraulic side diaphragm sealing ring is provided on the inner side of the annular diaphragm, and an annular diaphragm fastening one-way valve is installed between every two hydraulic side diaphragm sealing rings.

[0009] Preferably, an oil filling valve for replenishing the oil in the inner cylinder is installed outside the sealing stuffing box.

[0010] Preferably, a relief valve diaphragm is provided in the diaphragm adaptive relief valve, an oil channel is provided between the bottom of the diaphragm adaptive relief valve and the annular diaphragm, an energy storage diaphragm is provided in the diaphragm adaptive relief valve, and a diaphragm valve core is provided in the center of the energy storage diaphragm, one side of the diaphragm adaptive relief valve is connected to a return pipe connected to the hydraulic plunger cylinder sleeve, and a return check valve is installed on the return pipe.

[0011] Preferably, the outside of the hydraulic plunger cylinder sleeve is wrapped with a cylinder sleeve sealing ring.

[0012] Preferably, an adjusting hand wheel is installed on the top of the diaphragm adaptive relief valve.

[0013] Preferably, the front end of the hydraulic plunger is a convex cylinder, and the diameter D of the convex cylinder is larger than the diameter d of the middle section of the hydraulic plunger. The compensation one-way valve is assembled inside the convex cylinder, and a through hole communicating with the overflow channel is opened on the outside of the convex cylinder.

[0014] Preferably, the crankshaft-connecting rod crosshead assembly includes a crankcase, a crankshaft is installed inside the crankcase, and a plurality of connecting rods are connected to the crankshaft, the connecting rods are connected to the crosshead, a driving plunger assembly is connected between the crosshead and the hydraulic plunger, and one end of the crosshead is filled with a crankcase filler assembly.

[0015] Preferably, the driving plunger assembly includes a driving plunger connected to the crosshead, a half-moon positioning ring is provided at the front end of the driving plunger, the half-moon positioning ring is connected to the driving plunger through a connecting nut, and the hydraulic plunger is inserted into the driving plunger.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention achieves fluid pressurization by designing the diaphragm into an annular structure, hydraulically driving the deformation of the annular diaphragm, and forming a variable volume between the inner and outer cylinders and the diaphragm. The small-diameter annular diaphragm replaces the large-diameter circular diaphragm, and the integrated cylinder body does not require axial fasteners, thus optimizing the unit design. This solves the problem that the circular diaphragm and cylinder diameter of traditional diaphragm superchargers, as well as the large load on the limiting plate, are not conducive to the cylinder structure layout and the axial fastening of the limiting plate.

[0018] In order to compensate for the overflow of oil in the diaphragm cavity, the cylinder oil compensation system of the present invention uses the overflow valve body to store energy and buffer the hydraulic pressure through the built-in micro-annular diaphragm; the integrated structure of the hydraulic plunger and the compensation system does not require an external compensation pump, and the compensation oil is injected into the diaphragm cavity when the hydraulic plunger returns, avoiding overflow waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a partial cross-section structure of a single cavity of the present invention;

[0020] FIG2 is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] FIG3 is a schematic diagram of the cross-sectional structure of the driving end of the present invention;

[0022] FIG4 is a schematic diagram of the cross-sectional structure of the hydraulic end of the present invention;

[0023] FIG5 is a schematic structural diagram of the hydraulic overflow replenishment part of the present invention;

[0024] FIG6 is a schematic diagram of the structure of the outer cylinder after partial sectioning of the present invention;

[0025] FIG7 is a schematic diagram of the hydraulic plunger structure of the present invention;

[0026] FIG8 is a schematic diagram of the annular diaphragm structure of the present invention.

[0027] In the figure: 10 - drive end; 20 - fluid end; 110 - crankshaft connecting rod crosshead assembly; 120 - crankcase packing assembly; 130 - drive plunger assembly; 210 - diaphragm cylinder seal packing assembly; 220 - diaphragm adaptive relief valve; 230 - outlet check valve; 240 - annular diaphragm assembly; 250 - inlet check valve; 111 - crosshead; 112 - crankcase; 113 - connecting rod; 114 - crankshaft; 131 - drive plunger; 132 - connecting nut; 133 - half-moon locating ring; 211 - cylinder liner seal; 212 - return check valve ;213-sealing packing;214-sealing stuffing box;215-hydraulic plunger cylinder sleeve;216-compensating one-way valve;217-hydraulic plunger;217a-hydraulic plunger details;218-oil charging valve;221-overflow valve diaphragm;222-diaphragm valve core;223-energy storage diaphragm;224-adjusting handwheel;241-annular diaphragm;241a-details of both ends of the annular diaphragm;242-inner cylinder body;243-diaphragm sealing ring;244-hydraulic side diaphragm sealing ring;245-outer cylinder body;246-cylinder head;247-annular diaphragm fastening one-way valve. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1 - Figure 8, the present invention provides a technical solution: an annular diaphragm booster includes a booster cylinder, the shell design of the booster cylinder includes but is not limited to the shape shown in the figure, by providing multiple chambers in the booster body, three chambers are shown in the figure, and the required number of chambers can be adjusted according to usage requirements, wherein a single chamber can be regarded as a separate diaphragm booster unit, or multiple chambers can be used together, thereby achieving the effect of using multiple diaphragm booster units at the same time.

[0030] Reference Attachment Figure 1 and attached Figure 2 It can be seen that one end of the boost cylinder is the driving end 10, in which a crankshaft-connecting rod crosshead assembly 110 is installed, and in which an annular diaphragm assembly 240 is installed. The crankshaft-connecting rod crosshead assembly 110 includes a crankcase 112, in which a crankshaft 114 is installed. The ends of the crankshaft 114 are connected through power output components such as a motor, so that the crankshaft 114 rotates inside the crankcase 112, and a plurality of connecting rods 113 are connected to the crankshaft 114, which are connected to the crosshead 111. A driving plunger assembly 130 is connected between the crosshead 111 and the hydraulic plunger 217, and one end of the crosshead 111 is filled with a crankcase filler assembly 120. The driving plunger assembly 130 includes a driving plunger 131 connected to the crosshead 111. A half-moon positioning ring 133 is provided at the front end of the driving plunger 131. The half-moon positioning ring 133 is connected to the driving plunger 131 through a connecting nut 132. The hydraulic plunger 217 is inserted into the driving plunger 131. When the external power mechanism drives the crankshaft 114 to rotate, the hydraulic plunger 217 can be made to reciprocate, thereby realizing a hydraulic boosting effect in the boosting cylinder.

[0031] The annular diaphragm assembly 240 includes an inner cylinder body 242. An annular groove is provided on the outer diameter of the inner cylinder body 242. A plurality of holes are formed on the outer surface of the inner cylinder body 242. The outer part of the inner cylinder body 242 is wrapped with an annular diaphragm 241. The annular diaphragm 241 is composed of single or multiple layers of materials. Flanges are provided at both ends for axial installation and fixation. An outer cylinder body 245 is provided outside the annular diaphragm 241, and a cylinder head 246 is installed at the front end of the outer cylinder body 245. An inlet check valve 250 for fluid inflow is provided at the bottom of the cavity, and an outlet check valve 230 for fluid discharge is provided at the top of the cavity; One end of the inner cylinder body 242 is provided with a diaphragm cylinder sealing packing assembly 210. The diaphragm cylinder sealing packing assembly 210 includes a hydraulic plunger cylinder sleeve 215 and a hydraulic plunger 217. The hydraulic plunger 217 is connected to the driving plunger assembly 130. A compensation check valve 216 is installed inside the hydraulic plunger 217. A diaphragm self-adaptive overflow valve 220 is assembled at the outer cylinder body 245, and one end of the diaphragm self-adaptive overflow valve 220 is communicated with the compensation check valve 216.

[0032] Reference appendix Figure 7 As shown, the front end of the hydraulic plunger 217 is a convex cylinder, and the diameter D of the convex cylinder is greater than the diameter d of the middle section of the hydraulic plunger 217. The compensation check valve 216 is assembled inside the convex cylinder, and through holes communicating with the overflow channel are provided on the outside of the convex cylinder. Reference appendix Figure 4 As shown in the detailed drawing of the hydraulic plunger 217a, d < D. Oil is sucked during the boosting stroke, and oil is injected into the diaphragm cavity during the return stroke.

[0033] A sealing packing box 214 is installed at one end of the hydraulic plunger cylinder sleeve 215, and the sealing packing box 214 is filled with a sealing packing 213.

[0034] A diaphragm sealing ring 243 is provided outside the annular diaphragm 241, and a hydraulic side diaphragm sealing ring 244 is provided inside the annular diaphragm 241. An annular diaphragm fastening check valve 247 is installed between every two hydraulic side diaphragm sealing rings 244. An oil filling valve 218 for replenishing oil to the inner cylinder body 242 is installed outside the sealing packing box 214.

[0035] An overflow valve diaphragm 221 is provided inside the diaphragm self-adaptive overflow valve 220. An oil passage is provided between the bottom of the diaphragm self-adaptive overflow valve 220 and the annular diaphragm 241. A energy storage diaphragm 223 is provided inside the diaphragm self-adaptive overflow valve 220, and a diaphragm valve core 222 is provided in the center of the energy storage diaphragm 223. One side of the diaphragm self-adaptive overflow valve 220 is communicated with a return pipeline communicated with the hydraulic plunger cylinder sleeve 215, and a return check valve 212 is installed on the return pipeline. The outside of the hydraulic plunger cylinder sleeve 215 is wrapped with a cylinder sleeve sealing ring 211. An adjusting handwheel 224 is installed at the top of the diaphragm self-adaptive overflow valve 220.

[0036] When using the equipment of this solution, first, the oil is filled into the inner cavity of the inner cylinder 242 through the oil filling valve 218, and the fluid to be pressurized flows in from the inlet check valve 250. Under the driving action of the power equipment, the crankshaft 114 drives the multiple hydraulic plungers 217 to move, pushing the hydraulic oil inside the hydraulic plunger cylinder sleeve 215 into the inner cylinder 242. Since the inner cylinder 242 has an oil hole, the hydraulic oil pushes the annular diaphragm 241 wrapped around the outside of the inner cylinder 242 to deform, and the diaphragm sealing ring 243 on the outside of the annular diaphragm 241 prevents the pressurized fluid from entering the annular diaphragm. The membrane 241 overflows from the gap with the outer cylinder body 245, and a hydraulic side diaphragm sealing ring 244 is provided on the inner side of the annular diaphragm 241 to prevent the hydraulic oil from overflowing from the cylinder cover 246. An annular diaphragm fastening check valve 247 is installed between every two hydraulic side diaphragm sealing rings 244. The oil pressure radially locks the annular diaphragm 241 to limit the axial displacement of the annular diaphragm 241. The hydraulic drive annular diaphragm 241 is deformed, and the inner and outer cylinder bodies and the diaphragm form a variable volume. When the fluid passes through the variable volume, the fluid can be pressurized, and then the pressurized fluid is discharged through the outlet check valve 230.

[0037] In order to protect the annular diaphragm 241 from being damaged by the high pressure difference, when the oil pressure in the inner cylinder 242 exceeds a certain value of the pressurized fluid pressure, the relief valve diaphragm 221 moves upward under the action of the pressure difference, driving the valve core to open, and the hydraulic oil flows out from the adjacent Figure 5 The hydraulic oil flows into the middle overflow channel and is partially buffered in the energy storage diaphragm 223 cavity. The hydraulic oil overflowed when the hydraulic plunger 217 returns is injected into the diaphragm cylinder from the compensation one-way valve 216 at the front end of the hydraulic plunger 217. The compensation one-way valve 216 is a one-way flow, that is, the oil can be injected into the diaphragm cylinder through the compensation one-way valve 216, but cannot be discharged from the compensation one-way valve 216. The hydraulic oil flowing into the energy storage diaphragm 223 stores the back pressure of the overflow circuit, ensuring that there is no cavity in the overflow circuit. At the same time, since the return pipe is designed with a return one-way valve 212, the returned oil is prevented from flowing back to the inside of the overflow valve diaphragm 221. In this way, self-excited compensation and overflow of the hydraulic oil inside the annular diaphragm 241 can be achieved, which is more advanced than the existing circular diaphragm booster oil compensation system design.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An annular diaphragm booster, comprising a driving end (10) and a hydraulic end (20), wherein the hydraulic end comprises a boosting cylinder, and is characterized in that: The supercharger cylinder is provided with multiple cavities; The driving end (10) is mounted with a crankshaft connecting rod crosshead assembly (110), and the hydraulic end (20) is mounted with an annular diaphragm assembly (240); The annular diaphragm assembly (240) includes an inner cylinder (242), an annular groove is provided on the outer diameter of the inner cylinder (242), and an annular diaphragm (241) is wrapped on the outside. The annular diaphragm (241) is composed of a single layer or multiple layers of material, and flanges are provided at both ends for axial installation and fixation. At the same time, the two ends are radially tightened by the hydraulic pressure between two hydraulic side diaphragm sealing rings (244). A diaphragm rupture leakage detection port is provided at the end of the multi-layer annular diaphragm. An outer cylinder (245) is provided on the outside of the annular diaphragm (241), and a cylinder cover (246) is installed at the front end of the outer cylinder (245). An inlet check valve (250) for fluid inflow is provided at the bottom of the cavity, and an outlet check valve (230) for fluid discharge is provided at the top of the cavity. A diaphragm cylinder sealing packing assembly (210) is provided at one end of the inner cylinder body (242), wherein the diaphragm cylinder sealing packing assembly (210) comprises a hydraulic plunger cylinder sleeve (215) and a hydraulic plunger (217), and the hydraulic plunger (217) is connected to the driving plunger assembly (130), and a compensation check valve (216) is connected to the hydraulic plunger (217). A diaphragm adaptive overflow valve (220) is assembled at the outer cylinder body (245), and one end of the diaphragm adaptive overflow valve (220) is connected to the compensation check valve (216).

2. The annular diaphragm booster according to claim 1, characterized in that: A sealing stuffing box (214) is installed at one end of the hydraulic plunger cylinder sleeve (215), and the sealing stuffing box (214) is filled with sealing stuffing (213).

3. The annular diaphragm booster according to claim 1, characterized in that: Diaphragm sealing rings (243) are provided at both ends of the outer side of the annular diaphragm (241), and hydraulic side diaphragm sealing rings (244) are provided at both ends of the inner side of the annular diaphragm (241). An annular diaphragm fastening one-way valve (247) is installed between each two hydraulic side diaphragm sealing rings (244).

4. The annular diaphragm booster according to claim 2, characterized in that: An oil filling valve (218) for replenishing oil in the inner cylinder (242) is installed on the outside of the sealing stuffing box (214).

5. The annular diaphragm booster according to claim 1, characterized in that: A relief valve diaphragm (221) is provided in the diaphragm adaptive relief valve (220), an oil channel is provided between the bottom of the diaphragm adaptive relief valve (220) and the annular diaphragm (241), an energy storage diaphragm (223) is provided on one side of the diaphragm adaptive relief valve (220), and a diaphragm valve core (222) is provided in the center of the energy storage diaphragm (223), and a return pipe communicating with the hydraulic plunger cylinder sleeve (215) is connected to the other side of the diaphragm adaptive relief valve (220), and a return check valve (212) is installed on the return pipe.

6. The annular diaphragm booster according to claim 5, characterized in that: The hydraulic plunger cylinder sleeve (215) is externally wrapped with a cylinder sleeve sealing ring (211).

7. The annular diaphragm booster according to claim 5, characterized in that: An adjusting hand wheel (224) is installed on the top of the diaphragm adaptive overflow valve (220).

8. The annular diaphragm booster according to claim 5, characterized in that: The front end of the hydraulic plunger (217) is a convex cylinder, and the diameter D of the convex cylinder is larger than the diameter d of the middle section of the hydraulic plunger (217). The compensation one-way valve (216) is assembled inside the convex cylinder, and a through hole communicating with the overflow channel is provided on the outside of the convex cylinder.

9. The annular diaphragm booster according to claim 1, characterized in that: The crankshaft-connecting rod crosshead assembly (110) comprises a crankcase (112), a crankshaft (114) is installed inside the crankcase (112), and a plurality of connecting rods (113) are connected to the crankshaft (114), the connecting rods (113) are connected to the crosshead (111), a driving plunger assembly (130) is connected between the crosshead (111) and the hydraulic plunger (217), and one end of the crosshead (111) is filled with a crankcase filler assembly (120).

10. The annular diaphragm booster according to claim 9, characterized in that: The driving plunger assembly (130) includes a driving plunger (131) connected to a crosshead (111), a half-moon positioning ring (133) is provided at the front end of the driving plunger (131), the half-moon positioning ring (133) is connected to the driving plunger (131) via a connecting nut (132), and the hydraulic plunger (217) is inserted into the driving plunger (131).

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