阅读说明：本技术 一种平行作业泵组及使用方法 (Parallel operation pump set and use method ) 是由 杨高瞻 王宏斌 杨凡 朱辛宝 艾晓琴 张立君 赵贝贝 徐亮 贺玉军 王海东 于 2020-11-19 设计创作，主要内容包括：本发明涉及一种平行作业泵组及使用方法,属于液压技术领域。本发明的技术方案是：将多台作业泵的输入口与油箱连接,然后把所有作业泵的输出口连通在一起作为整体输出端口,多作业泵平行作业共同工作时,流量为每个作业泵流量的叠加。本发明的有益效果是：通过采用平行作业泵组共同工作,流量为每个泵流量的叠加,泵的流量是由所在系统的负载和工作条件所决定,泵组能够保证在低于泵额定转速的条件下,依旧能够高效运行,不但使得液压系统的工作效率和工作速率明显提升,还降低了整个系统的成本,在很大程度上降低能量消耗,增强能量利用率。(The invention relates to a parallel operation pump set and a using method thereof, belonging to the technical field of hydraulic pressure. The technical scheme of the invention is as follows: the input ports of a plurality of operation pumps are connected with the oil tank, then the output ports of all the operation pumps are communicated together to be used as an integral output port, and when the operation of the plurality of operation pumps is carried out in parallel and works together, the flow rate is the superposition of the flow rate of each operation pump. The invention has the beneficial effects that: the parallel operation pump set works together, the flow is the superposition of the flow of each pump, the flow of each pump is determined by the load and the working condition of the system where the pump is located, and the pump set can still run efficiently under the condition of being lower than the rated rotating speed of the pump, so that the working efficiency and the working speed of a hydraulic system are obviously improved, the cost of the whole system is reduced, the energy consumption is reduced to a great extent, and the energy utilization rate is enhanced.)

1. A method for using a parallel operation pump group is characterized by comprising the following steps: the input ports of a plurality of operation pumps are connected with the oil tank, then the output ports of all the operation pumps are communicated together to be used as an integral output port, and when the operation of the plurality of operation pumps is carried out in parallel and works together, the flow rate is the superposition of the flow rate of each operation pump.

2. A parallel operation pump package which is characterized in that: the device comprises a common oil tank (25), a plurality of parallel pump operation pump groups, a common pipeline, an energy accumulator group (26), a common integral motor base (6), a common pump group rack (18) and a distribution box (19), wherein each operation pump group in the plurality of parallel pump operation pump groups comprises a butterfly valve (2), a rubber shock-absorbing joint (3), a motor (7), a coupler (8), a bell-shaped cover (9), a hydraulic pump (10), an integrated block (11), an overflow oil return pipe (12), an overflow valve (13), a pressure oil pipe (17), a ball valve (14), an oil suction pipe (27) and a high-pressure hose; the common pipeline comprises a common input oil suction pipe (1), a common pump oil return pipe (4), a common pump cooling oil pipe (5), a common output pressure pipe (15), a common overflow oil return pipe (16) and a common oil return pipe (24); the motor (7) is arranged on a common integral motor base (6), a hydraulic pump (10) and the motor (7) are connected together through a coupling (8) and a bell-shaped cover (9), the hydraulic pump (10) is connected with a common input oil suction pipe (1) through an oil suction pipe (27), a rubber shock-proof joint (3) and a butterfly valve (2), the common input oil suction pipe (1) is connected with a common oil tank (25), the hydraulic pump (10) is connected with a manifold block (11) through a high-pressure hose, an overflow valve (13) is arranged on the manifold block (11), the manifold block (11) is connected with a common overflow oil return pipe (16) through an overflow oil return pipe (12), the common overflow oil return pipe (16) is connected with the common oil tank (25), the manifold block (11) is connected with a common output pressure pipe (15) through a pressure oil pipe (17) and a ball valve (14), the common output pressure pipe (15) is connected with an energy accumulator set (26) and extends to a control element, the return oil of the hydraulic system flows back to the common oil tank (25) through the common pump return oil pipe (4), the return oil of the hydraulic pump (10) per se flows back to the common oil tank (25) through the common pump return oil pipe (4) through a high-pressure hose, and the hydraulic oil from the cooling system is communicated into the hydraulic pump (10) through the common pump cooling oil pipe (5) and the high-pressure hose.

3. A parallel operation pump group according to claim 2, characterized in that: the plurality of parallel operation pump groups comprise four operation pump groups, namely a first pump group (20), a second pump group (21), a third pump group (22) and a fourth pump group (23), and the configuration and the system piping of the four operation pump groups are completely the same.

Technical Field

The invention relates to a parallel operation pump set and a using method thereof, belonging to the technical field of hydraulic equipment.

Background

The hydraulic pump is used as a power element of the whole system and is widely applied to the fields of metallurgical machinery, engineering machinery and the like. Along with the popularization and rapid development of hydraulic technology, hydraulic equipment is more and more widely used, the performance requirements on a pump are increasingly improved, and a large-flow hydraulic pump is required in various large-flow hydraulic systems. In order to solve the problem of insufficient flow of the hydraulic pump, people adopt a method of adding a hydraulic system, so that on one hand, the cost investment is increased, on the other hand, the hydraulic system is too numerous and dispersed to be beneficial to management, and the workload of maintenance and repair of hydraulic equipment is increased. Sometimes, the space is limited, and more hydraulic stations are inconvenient to add.

Disclosure of Invention

The invention aims to provide a parallel operation pump set, which works together by adopting the parallel operation pump set, the flow rate is the superposition of the flow rate of each pump, the flow rate of the pump is determined by the load and the working condition of the system, the pump set can be ensured to still run efficiently under the condition of lower than the rated rotating speed of the pump, the working efficiency and the working speed of a hydraulic system are obviously improved, the cost of the whole system is reduced, the energy consumption is reduced to a great extent, the energy utilization rate is enhanced, important contribution is made to further realizing the energy-saving target of the hydraulic system, and the problems in the background technology are effectively solved.

The technical scheme of the invention is as follows: a method for using a parallel operation pump group comprises the following steps: the input ports of a plurality of operation pumps are connected with the oil tank, then the output ports of all the operation pumps are communicated together to be used as an integral output port, and when the operation of the plurality of operation pumps is carried out in parallel and works together, the flow rate is the superposition of the flow rate of each operation pump.

A parallel operation pump group comprises a common oil tank, a plurality of parallel pump operation pump groups, a common pipeline, an energy accumulator group, a common integral motor base, a common pump group frame and a distribution box, wherein each operation pump group in the plurality of parallel operation pump groups comprises a butterfly valve, a rubber shock-proof joint, a motor, a coupling, a bell-shaped cover, a hydraulic pump, an integrated block, an overflow oil return pipe, an overflow valve, a pressure oil pipe, a ball valve, an oil suction pipe and a high-pressure hose; the common pipeline comprises a common input oil suction pipe, a common pump oil return pipe, a common pump cooling oil pipe, a common output pressure pipe, a common overflow oil return pipe and a common oil return pipe; the motor is arranged on the base of the public integrated motor, the hydraulic pump and the motor are connected together through the coupling and the bell-shaped cover, the hydraulic pump passes through the oil suction pipe, the rubber shock-absorbing joint and the butterfly valve are connected with a public input oil suction pipe, the public input oil suction pipe is connected with a public oil tank, the hydraulic pump is connected with an integrated block through a high-pressure hose, an overflow valve is installed on the integrated block, the integrated block is connected with a public overflow oil return pipe through the overflow oil return pipe, the public overflow oil return pipe is connected with the public oil tank, the integrated block is connected with a public output pressure pipe through a pressure oil pipe and a ball valve, the public output pressure pipe is connected with an energy accumulator group and extends to a control element and an execution element of a hydraulic system, return oil of the hydraulic system flows back to the public oil tank through the public pump oil return pipe, return oil of the hydraulic pump per se flows back to the public oil tank through the public pump oil return pipe through the high-pressure.

The plurality of parallel operation pump groups comprise four operation pump groups, namely a first pump group, a second pump group, a third pump group and a fourth pump group, and the configuration and the system piping of the four operation pump groups are completely the same.

The invention has the beneficial effects that: the parallel operation pump sets work together, the flow is the superposition of the flow of each pump, the flow of the pumps is determined by the load and the working condition of the system where the pumps are located, the pump sets can be guaranteed to still run efficiently under the condition that the pump is lower than the rated rotating speed of the pumps, the working efficiency and the working speed of the hydraulic system are obviously improved, the cost of the whole system is reduced, the energy consumption is reduced to a great extent, the energy utilization rate is enhanced, and important contribution is made to further achieving the energy-saving goal of the hydraulic system.

Drawings

FIG. 1 is a plan view of a pump stack for parallel pump operation according to the present invention;

FIG. 2 is a view of the pump assembly of the present invention in the direction of "C";

FIG. 3 is a view of the pump assembly A-A of the parallel pump operation of the present invention;

figure 4 is a top view of the pump group according to the invention;

in the figure: the system comprises a public input oil suction pipe 1, a butterfly valve 2, a rubber shock-absorbing joint 3, a public pump oil return pipe 4, a public pump cooling oil pipe 5, a public integrated motor base 6, a motor 7, a coupling 8, a bell-shaped cover 9, a hydraulic pump 10, an integrated block 11, an overflow oil return pipe 12, an overflow valve 13, a ball valve 14, a public output pressure oil pipe 15, a public overflow oil return pipe 16, a pressure oil pipe 17, a public pump set frame 18, a distribution box 19, a first pump set 20, a second pump set 21, a third pump set 22, a fourth pump set 23, a public oil return pipe 24, a public oil tank 25, an energy accumulator set 26 and an oil suction pipe 27.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the drawings of the embodiments, and it is obvious that the described embodiments are a small part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

A method for using a parallel operation pump group comprises the following steps: the input ports of a plurality of operation pumps are connected with the oil tank, then the output ports of all the operation pumps are communicated together to be used as an integral output port, and when the operation of the plurality of operation pumps is carried out in parallel and works together, the flow rate is the superposition of the flow rate of each operation pump.

A parallel operation pump group comprises a common oil tank 25, a plurality of parallel pump operation pump groups, a common pipeline, an energy accumulator group 26, a common integral motor base 6, a common pump group frame 18 and a distribution box 19, wherein each operation pump group in the plurality of parallel operation pump groups comprises a butterfly valve 2, a rubber shock-absorbing joint 3, a motor 7, a coupling 8, a bell-shaped cover 9, a hydraulic pump 10, an integrated block 11, an overflow oil return pipe 12, an overflow valve 13, a pressure oil pipe 17, a ball valve 14, an oil suction pipe 27 and a high-pressure hose; the common pipeline comprises a common input oil suction pipe 1, a common pump oil return pipe 4, a common pump cooling oil pipe 5, a common output pressure pipe 15, a common overflow oil return pipe 16 and a common oil return pipe 24; the motor 7 is arranged on a common integral motor base 6, a hydraulic pump 10 and the motor 7 are connected together through a coupling 8 and a bell jar 9, the hydraulic pump 10 is connected with a common input oil suction pipe 1 through an oil suction pipe 27, a rubber shock-absorbing joint 3 and a butterfly valve 2, the common input oil suction pipe 1 is connected with a common oil tank 25, the hydraulic pump 10 is connected with an integrated block 11 through a high-pressure hose, an overflow valve 13 is arranged on the integrated block 11, the integrated block 11 is connected with a common overflow oil return pipe 16 through an overflow oil return pipe 12, the common overflow oil pipe 16 is connected with the common oil tank 25, the integrated block 11 is connected with a common output pressure pipe 15 through a pressure oil pipe 17 and a ball valve 14, the common output pressure pipe 15 is connected with an energy accumulator group 26 and extends to a control element and an execution element of a hydraulic system, return oil of the hydraulic system flows back to the common oil tank 25 through a common pump oil return pipe, hydraulic oil from the cooling system is led by a common pump cooling oil line 5 via a high pressure hose to a hydraulic pump 10.

The plurality of parallel operation pump groups comprise four operation pump groups, namely a first pump group 20, a second pump group 21, a third pump group 22 and a fourth pump group 23, and the configuration and the system piping of the four operation pump groups are completely the same.

In practical application, a post operator starts four pump sets or a plurality of pump sets according to the use condition and the field production condition of the hydraulic pump sets, the working process of the invention is illustrated by taking the starting of the four pump sets as an example,

1. the start-up procedure of four pump stacks is illustrated with the start-up of pump stack No. three 22: before starting the third pump set 22, the butterfly valve 2 is opened to enable hydraulic oil to enter the hydraulic pump 10 from the oil tank 25, the common input oil suction pipe 1, the suction butterfly valve 2, the rubber shock absorption joint 3 and the oil suction pipe 27, meanwhile, the adjusting handle of the overflow valve 13 arranged on the integrated block 11 is loosened to the maximum in the anticlockwise direction, and meanwhile, whether valves connected with the common pump cooling oil pipe 5 and the common pump return oil pipe 4 of the hydraulic pump 10 are in correct opening positions or not is checked and confirmed. While closing the ball valve 14 which communicates the pressure line 17 with the common output pressure line 15. Then the motor 7 is started, the motor 7 rotates to drive the hydraulic pump 10 to work, output pressure oil enters the manifold block 11 from the high-pressure hose, the pressure oil overflows from the overflow valve 13, the handle of the overflow valve 13 is adjusted clockwise, the hydraulic pump 10 is adjusted to work pressure, meanwhile, the ball valve 14 is opened, the pressure oil pumped by the hydraulic pump 10 enters the accumulator group 26 from the pressure oil pipe 17 through the common output pressure pipe 15, and the pressure oil extends to be connected with a control element and an execution element of a hydraulic system. The return oil of the hydraulic system is returned to the oil tank 25 by a common return pipe 24.

2. The first pump unit 20, the second pump unit 21 and the fourth pump unit 23 are started as well as the third pump unit.

3. The accumulator bank 26 is connected in parallel to the common output pressure pipe 15 of the four pump banks, eliminating pressure pulsation between the individual pumps, maintaining constant pressure of the system and supplementing leakage.