阅读说明：本技术 一种单头双作用气液增压泵 (Single-head double-acting gas-liquid booster pump ) 是由 李志� 高瞻 白书宜 于 2019-09-03 设计创作，主要内容包括：本发明公开了一种单头双作用气液增压泵,包括液压高压部与气驱动部,其中液压高压部包括法兰压盖、前端盖、进油单向阀、小缸筒、小活塞、小活塞单向阀、方法兰、过渡法兰导向端盖；气驱动部包括气驱前端盖、气驱后端盖、大缸筒、大活塞、前先导阀、后先导阀、气动滑阀,大小活塞通过两端固定于活塞中心部分的活塞杆连接,气动滑阀位于气驱前端盖上部。本发明通过气动滑阀及前后先导阀的设置使得在活塞双向运动过程中都会有液压油输出,实现成本低,解决了传统单头单作用气液增压泵无法实现连续工作而效率低,双头双作用气液增压泵相对成本高的问题。(The invention discloses a single-head double-acting gas-liquid booster pump which comprises a hydraulic high-pressure part and a gas driving part, wherein the hydraulic high-pressure part comprises a flange gland, a front end cover, an oil inlet check valve, a small cylinder barrel, a small piston check valve, a square flange and a transition flange guide end cover; the pneumatic driving part comprises a pneumatic driving front end cover, a pneumatic driving rear end cover, a large cylinder barrel, a large piston, a front pilot valve, a rear pilot valve and a pneumatic slide valve, wherein the large piston and the small piston are connected through a piston rod of which two ends are fixed at the center part of the piston, and the pneumatic slide valve is positioned on the upper part of the pneumatic driving front end cover. According to the invention, through the arrangement of the pneumatic slide valve and the front and rear pilot valves, hydraulic oil is output in the process of bidirectional movement of the piston, the realization cost is low, and the problems that the traditional single-head single-action gas-liquid booster pump cannot realize continuous work, the efficiency is low, and the double-head double-action gas-liquid booster pump is relatively high in cost are solved.)

1. A single-head double-acting gas-liquid booster pump is characterized by comprising a hydraulic high-pressure part and a gas driving part,

the hydraulic high-pressure part comprises a flange gland, a front end cover, an oil inlet check valve, a small cylinder barrel, a small piston check valve, a square flange and a transition flange guide end cover, and the gas driving part comprises a gas-driven front end cover, a gas-driven rear end cover, a large cylinder barrel, a large piston, a front pilot valve, a rear pilot valve and a pneumatic slide valve;

the pneumatic slide valve is characterized in that a through hole is formed in the center of the gas drive front end cover, the transition flange guide end cover passes through the through hole and is connected with the gas drive front end cover through a screw, the hydraulic high-pressure small piston is located in the small cylinder, the gas drive large piston is located in the large cylinder, the small piston is connected with the large piston through a piston rod, two ends of the piston rod are fixed to the center of the piston, the transition flange guide end cover is provided with a center through hole, the piston rod penetrates through the center through hole and moves left and right, and the pneumatic slide valve is located on the upper portion of the gas drive front end.

2. The single-head double-acting gas-liquid booster pump as claimed in claim 1, wherein the front end cover is located on the left side of the small cylinder, the flange gland is located on the periphery of the front end cover, the transition flange guide end cover is located on the right side of the small cylinder, the small front end cover is provided with an oil inlet and is communicated with the oil inlet check valve, the small piston is provided with a plurality of oil through holes, the small piston check valve is located on the oil through holes, the transition flange guide end cover is provided with an oil outlet, and the oil outlet is communicated with an air cavity formed by the small piston and the transition flange guide end cover.

3. The single-head double-acting gas-liquid booster pump as claimed in claim 2, wherein the pneumatic slide valve comprises a valve body, a valve sleeve, a valve core, an end cover, a silencer, a gas inlet P, three gas outlets a, B, T; the valve sleeve wraps the valve core, the valve body is located on the periphery of the valve sleeve, the air inlet P is located on one side of the valve body, the end cover is sealed on the other side of the valve body, the air outlet A and the air outlet B are located below the same side of the valve body, the air outlet T is located above the valve body, and the silencer is installed on the air outlet T.

4. The single-head double-acting gas-liquid booster pump as claimed in claim 3, wherein the gas-driven front end cover is located on one side of the large cylinder close to the small cylinder, and the front pilot valve is located at the end of the inner side of the gas-driven front end cover; the gas-driven rear end cover is positioned on one side, far away from the small cylinder barrel, of the large cylinder barrel, the upper portion of the gas-driven rear end cover is provided with a gas path block, the rear pilot valve is positioned at the end portion of the inner side of the gas-driven rear end cover, the gas-driven front end cover, the large cylinder barrel, the large piston and the gas-driven rear end cover are connected through four screws, gas inlets are formed in the gas-driven front end cover and the gas-driven rear end cover, the gas-driven front end cover gas inlet is connected with a gas path of a gas outlet B of the pneumatic slide valve, the gas-driven rear end cover gas inlet is connected with a gas path of a gas outlet A of the pneumatic slide valve, the front pilot valve is positioned on a gas path connecting the gas-driven front end cover gas inlet with.

Technical Field

The invention relates to a gas-liquid booster pump, in particular to a single-head double-acting gas-liquid booster pump.

Background

The gas-liquid booster pump is a novel power conversion machine, is mainly applied to a gas-liquid conversion power station, mainly adopts a gas-oil conversion method, is driven by compressed air of 1-7bar, and converts low-pressure oil into high-pressure oil through the compressed air so as to provide high output. The gas-liquid conversion power station combines the pneumatic principle and the hydraulic principle, has the advantages of high transmission speed, high pressure output, low working noise, high cost performance and the like, and is an updated product of modern pressure equipment.

The existing gas-liquid booster pump is mostly a single-head single-action booster pump or a double-head double-action booster pump, the single-head single-action booster pump is only provided with a high-pressure boosting cavity at one side of a gas drive cylinder, high-pressure hydraulic oil is output only when a piston rod moves to one side, and oil cannot be supplied when oil is absorbed, so that the flow of the booster pump is relatively small; when the double-head double-acting booster pump moves at two sides of the piston rod, one side absorbs oil and the other side outputs high-pressure oil, a continuous oil source can be provided, however, the length of an air driving cylinder is increased, the size is large, and the use cost is high.

Disclosure of Invention

Technical problem to be solved by the invention

The invention provides a novel single-head double-acting gas-liquid booster pump, which aims to solve the problems that the conventional single-head single-acting gas-liquid booster pump cannot realize lower continuous working efficiency and the double-head double-acting gas-liquid booster pump has high relative cost and improve the cost performance of a gas-liquid conversion power station.

Technical scheme

In order to solve the technical problems, the invention adopts the following technical scheme:

a single-head double-acting gas-liquid booster pump comprises a hydraulic high-pressure part and a gas driving part, wherein the hydraulic high-pressure part comprises a flange gland, a front end cover, an oil inlet check valve, a small cylinder barrel, a small piston check valve, a square flange and a transition flange guide end cover; the gas drive portion includes the gas drive front end housing, the gas drives the rear end housing, big cylinder, big piston, preceding pilot valve, the rear pilot valve, pneumatic slide valve, gas drive front end housing central point puts and is equipped with the through-hole, transition flange direction end housing passes through this through-hole and passes through the screw connection with the gas drive front end housing, the little piston of hydraulic pressure high pressure portion is located little cylinder, the big piston of gas drive portion is located big cylinder, little piston is connected through the piston rod that both ends are fixed in piston central part with big piston, transition flange direction end housing is equipped with central through-hole, the piston rod passes this central through-hole and controls the removal, pneumatic slide valve is located gas drive front end housing upper portion.

Furthermore, the front end cover is located the small cylinder left side, the flange gland is located the front end cover outside, transition flange direction end cover is located the small cylinder right side, be equipped with the oil inlet on the small front end cover and with oil feed check valve UNICOM, be equipped with a plurality of oil through holes on the little piston, little piston check valve is located the oil through hole, is equipped with the oil-out on the transition flange direction end cover, the oil-out with by the air chamber UNICOM that little piston and transition flange direction end cover formed.

Furthermore, the pneumatic slide valve comprises a valve body, a valve sleeve, a valve core, an end cover, a silencer, an air inlet P, three air outlets A, B and T; the valve body is positioned on the periphery of the valve sleeve, the valve sleeve wraps the valve core, the air inlet P is positioned on one side of the valve body, the end cover is sealed on the other side of the valve body, the air outlet A and the air outlet B are positioned below the same side of the valve body, the air outlet T is positioned above the valve body, and the silencer is arranged on the air outlet T.

Furthermore, the gas drive front end cover is positioned on one side of the large cylinder close to the small cylinder, and the front pilot valve is positioned at the end part of the inner side of the gas drive front end cover; the gas drives rear end cap and is located big cylinder and keep away from little cylinder one side, its upper portion installs the gas circuit piece, the back pilot valve is located the gas and drives rear end cap medial extremity, the gas drives the front end cap, big cylinder, big piston, the gas drives the rear end cap and passes through four screw connections, be equipped with the air inlet on gas drive front end cap and the gas drives the rear end cap, gas drives front end cap air inlet and is connected with pneumatic slide valve gas outlet B gas circuit, gas drives rear end cap air inlet and is connected with pneumatic slide valve gas outlet A gas circuit, the front pilot valve is located the gas circuit that gas driven front end cap air inlet and pneumatic slide valve gas outlet B are connected, the back pilot valve is located the gas circuit that gas driven rear end.

Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

the single-head double-acting gas-liquid booster pump has the characteristics of small structure volume of the single-head single-acting gas-liquid booster pump, capability of realizing continuous work and high efficiency of the double-head double-acting gas-liquid booster pump, hydraulic oil output in the process of bidirectional movement of the piston and low realization cost;

the invention has simple structure and is easy to realize, popularize and use.

Drawings

FIG. 1 is a side sectional view of the present invention;

FIG. 2 is an external view of the present invention;

FIG. 3 is a schematic view of the pneumatic slide valve of the present invention;

FIG. 4 and FIG. 5 are schematic diagrams illustrating the working of the pneumatic slide valve and the gas-liquid booster pump;

the reference numbers in the figures illustrate: 1-flange gland; 2-front end cover; 3-oil inlet one-way valve; 4-a small cylinder barrel; 5-small piston; 6-small piston check valve; 7-square flange; 8-a transition flange guide end cover; 9-gas drive front end cover; 10-a large cylinder barrel; 11-large piston; 12-a front pilot valve; 13-a rear pilot valve; 14-gas drive rear end cap; 15-fixing angle plates; 16-gas path block; 17-a piston rod; 18-a pneumatic slide valve; 19-an oil outlet; 20-a through hole; 21-small piston left chamber (rodless chamber); 22-small piston right chamber (rod chamber); 23-large piston left chamber (rod chamber); 24-large piston right chamber (rodless chamber); 25-pneumatic slide valve left chamber; 26-pneumatic slide valve right chamber; 27-pneumatic controlled channel a; 28-pneumatic control channel B; 181-a silencer; 182-a valve body; 183-valve housing; 184-a valve core; 185-end cap; 186-air inlet P; 187-Outlet A; 188-gas outlet B; 189-air outlet T.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

As shown in fig. 1, the single-head double-acting gas-liquid booster pump is composed of a left hydraulic high-pressure part and a right gas driving part, wherein the hydraulic high-pressure part comprises a flange gland 1, a front end cover 2, an oil inlet check valve 3, a small cylinder barrel 4, a small piston 5, a small piston check valve 6, a square flange 7 and a transition flange guide end cover 8; wherein front end housing 2 is located 4 left sides of little cylinder, flange gland 1 is located 2 peripheries of front end housing, transition flange direction end cover 8 is located 4 right sides of little cylinder, be equipped with the oil inlet on the little front end housing 2 and with 3 UNICOMs of oil feed check valve, little piston 5 is located little cylinder 4 and can remove in little cylinder, be equipped with the logical oilhole on little piston 5, little piston check valve 6 is located the logical oilhole, be equipped with oil-out 19 on the transition flange direction end cover 8, the oil-out communicates with the air chamber (little piston right chamber 22) that little piston and transition flange direction end cover 8 formed.

The air driving part comprises an air driving front end cover 9, an air driving rear end cover 14, a large cylinder 10, a large piston 11, a front pilot valve 12, a rear pilot valve 13 and a pneumatic slide valve 18; the large piston 11 is positioned in the large cylinder 10, the gas-driven front end cover 9 is positioned on one side of the large cylinder 10 close to the small cylinder 4, the pneumatic slide valve 18 is positioned on the upper part of the gas-driven front end cover, and the front pilot valve 12 is positioned at the end part of the inner side of the gas-driven front end cover 9; the gas drive rear end cover 14 is positioned on one side of the large cylinder barrel, which is far away from the small cylinder barrel, the upper part of the gas drive rear end cover is provided with a gas path block 16, and the rear pilot valve 13 is positioned at the end part of the inner side of the gas drive rear end cover 14. The center of the gas drive front end cover 9 is provided with a through hole 20, the transition flange guide end cover 8 passes through the through hole and is connected with the gas drive front end cover 9 through a screw, and the transition flange guide end cover 8 separates gas from a hydraulic medium.

The small piston 5 and the large piston 11 are connected through a piston rod 17 with two ends fixed at the central part of the piston, a transition flange guide end cover 8 is provided with a central through hole, the piston rod passes through the central through hole and moves left and right, O-shaped ring static seals are arranged between the small piston 5 and the large piston 11 and the piston rod 17 respectively, the large piston and the small piston are fastened through two nuts, a one-way seal and a guide belt are arranged on a groove of the outer diameter of the small piston, and a two-way seal is arranged on a groove of the outer diameter of the large piston. The small piston divides the small cylinder into a small piston left cavity (rodless cavity) 21 and a small piston right cavity (rod cavity) 22, and the large piston divides the large cylinder into a large piston left cavity (rod cavity) 23 and a large piston right cavity (rodless cavity) 24.

As shown in fig. 2, the gas-liquid booster pump is formed by connecting a small cylinder barrel 4 on the left side with a large cylinder barrel 10 on the right side, a flange front cover 1 and a front end cover 2 are positioned on the left side of the small cylinder barrel 4, a square flange 7 is arranged on the outer side of a hydraulic high-pressure part, the front end of the large cylinder barrel is a gas-driven front end cover 9, the rear side of the large cylinder barrel is a gas-driven rear end cover 14, a gas path block 16 is positioned on the upper part of the gas-driven rear end cover and used for sealing a gas path, a fixed angle plate 15 is positioned below the gas-driven front end cover and the.

As shown in fig. 3, the pneumatic slide valve includes a valve body 182, a valve sleeve 183, a valve core 184, an end cover 185, a silencer 181, an air inlet P186, an air outlet a187, an air outlet B188, and an air outlet T189; the valve body 182 is located at the periphery of the valve sleeve 183, the valve sleeve 183 wraps the valve core 184, the air inlet P186 is located at one side of the valve body, the end cover 185 is sealed at the other side of the valve body 182, the air outlet a187 and the air outlet B188 are located below one side of the valve body 182, the air outlet T189 is located above the valve body, and the silencer 181 is installed on the air outlet T189. The pneumatic slide valve 18 is a pneumatic two-position four-way valve, and the spool divides the interior cavity of the slide valve into a left chamber 25 and a right chamber 26. When the pneumatic slide valve works, driving gas and source gas alternately enter the left side and the right side of the large piston 11, and the front pilot valve and the rear pilot valve are used for controlling the entrance and the discharge of compressed air in the left cavity and the right cavity of the pneumatic slide valve 18, so that the reversing of the pneumatic slide valve 18 is realized, and the reciprocating motion of the large piston 11 is controlled. The large piston can be opened when contacting the front and rear pilot valves, and the valve is reset by a spring when the large piston leaves the front and rear pilot valves.

When the booster pump works, a very low pressure is applied to the large piston 11 to form a pulling force or a pushing force to drive the small piston 5 through the piston rod 17, when the small piston 5 moves rightwards, the oil inlet check valve 3 is opened to suck hydraulic oil, the small piston check valve 6 is closed, the small piston 5 compresses a small piston right cavity (rod cavity) 22 to generate a high pressure, and a hydraulic medium is led to an execution element through the oil outlet 19; further to the position shown in FIG. 4, the compressed air supply enters pneumatic control passage A27 through air inlet P186 and compressed air enters pneumatic slide valve left chamber 25; the big piston 11 touches the rear pilot valve 13 and touches the rod to open the pilot valve opening, the air in the pneumatic slide valve right cavity 26 is led to the atmosphere through the pneumatic control channel B28, at the moment, compressed air is in the pneumatic slide valve left cavity 25, the right cavity 26 is directly led to the atmosphere, the pressure on the left side of the pneumatic control valve core is greater than the right side, the valve core moves rightwards to stop at the position shown in figure 4, at the moment, the air inlet P186 is communicated with the air inlet A187 channel, the air inlet A187 channel is communicated with the big piston right cavity (rodless cavity) 24, air source compressed air enters the big piston right cavity 24 to enable the big piston to move leftwards, and the air in the big piston left cavity (rod cavity) 23 is discharged into the atmosphere through the air outlet B188 and.

When the small piston 5 moves leftwards, the oil inlet one-way valve 3 is closed, oil absorption is stopped, the small piston one-way valve 6 is opened, the rod cavity 22 of the small piston is communicated with the rodless cavity 21 of the small piston, the piston rod 17 enters the hydraulic high-pressure part, the volume of the cavity of the rod cavity 22 of the small piston is reduced to form high pressure, and a hydraulic medium is led to an execution element through the oil outlet 19; further, when the large piston 11 moves to the left to the position shown in fig. 5, the large piston 11 contacts the front pilot valve 12 to touch the rod, the front pilot valve is opened, at the moment, the air source compressed air is communicated to the air control channel a27 through the air inlet P186, the air control channel a is communicated with the air control channel B28 through the opened front pilot valve 12, the compressed air enters the pneumatic slide valve right cavity 26 through the air control channel B28 (at the moment, the rear pilot valve 13 is closed), at the moment, the air source compressed air respectively acts on the left side and the right side of the slide valve core, because the area of the left side of the valve core is smaller than the acting area of the right side of the valve core, the force applied to the right side of the valve core is larger than that applied to the left side, at the moment, the valve core moves leftwards, then stopping at the position shown in fig. 5, at this time, the air source compressed air enters the left cavity (rod cavity) 23 of the big piston through the air inlet P186 channel and the air outlet B188 channel, so that the big piston 11 moves towards the right side, and the air in the right cavity (rodless cavity) 24 of the big piston is exhausted into the atmosphere through the air outlet a187 channel and the air outlet T189; therefore, the reciprocating motion of the large piston 11 is controlled by the front and rear feeler lever type pilot valves and the pneumatic slide valve 18, the large piston 11 drives the small piston 05 to realize continuous motion through the piston rod 17, and high-pressure oil is output from oil outlets in the left and right reciprocating motion process of the large piston.

When the load of the actuating element generates pressure, the booster pump operates in a decelerating mode and generates certain resistance to large and small pistons in the booster pump, and when the resistance borne by the pistons is balanced with the air driving force, the pistons keep static, and the booster pump stops automatically; when the resistance of the piston is reduced or the air driving pressure is increased, the booster pump can automatically start to operate until the pressure is balanced again and then automatically stop.

Therefore, the left and right reciprocating motion of the piston is realized through the cooperation of the front and rear pilot valves and the pneumatic slide valve, and the oil outlets are all provided with high-pressure oil output in the process, so that the efficiency is ensured, and the realization cost is greatly reduced.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.