阅读说明：本技术 一种实现能量循环的乳化液泵及泵站测试系统与方法 (Emulsion pump and pump station testing system and method for realizing energy circulation ) 是由 朱同明 金江 宋岩 贾炎 梁万吉 袁晓明 杨文杰 郭洪军 王飞 王义猛 李海锋 于 2020-05-27 设计创作，主要内容包括：本发明涉及乳化液泵及泵站的测试技术领域；乳化液泵及泵站的性能和可靠性的好坏直接影响着液压支架的工作性能和使用效果,现有的乳化液泵及泵站测试系统主要采用溢流加载方式,测试成本高,发热量大,不节能环保,本发明提供一种实现能量循环的乳化液泵及泵站测试系统与方法,乳化液泵测试系统中若干乳化液泵组采用并联连接方式均与能量循环系统、压力测试系统连接,通过测功机实现能循环利用,所转换的电能经过第二电抗器和第二逆变器传输至第一逆变器后,再次进入乳化液泵测试系统,实现乳化液泵组测试过程中的能量循环利用,在测试过程中低耗高效,更加科学合理,有利于乳化液泵产业的发展。(The invention relates to the technical field of emulsion pump and pump station testing; the performance and reliability of the emulsion pump and the pump station directly influence the working performance and the use effect of the hydraulic support, the existing emulsion pump and pump station test system mainly adopts an overflow loading mode, has high test cost, large heat productivity, is not energy-saving and environment-friendly, the invention provides an emulsion pump and pump station test system and a method for realizing energy circulation, a plurality of emulsion pump sets in the emulsion pump test system are connected with an energy circulation system and a pressure test system in a parallel connection mode, the dynamometer realizes the cyclic utilization of energy, the converted electric energy is transmitted to the first inverter through the second reactor and the second inverter, then enters the emulsion pump testing system again to realize the energy recycling in the testing process of the emulsion pump set, the method has low consumption and high efficiency in the test process, is more scientific and reasonable, and is beneficial to the development of the emulsion pump industry.)

1. The utility model provides a realize energy endless emulsion pump and pump station test system, includes emulsion pump test system, pressure test system and energy circulation system, its characterized in that: the emulsion pump testing system comprises a plurality of emulsion pump sets, the emulsion pump sets are connected in parallel and are connected with the energy circulating system and the pressure testing system, each emulsion pump set comprises a tested emulsion pump (15) and an emulsion pump driving motor (13), and the emulsion pump driving motor (13) is connected with the tested emulsion pump (15) through a second coupler (14); the pressure testing system comprises a variable emulsion motor (10) and a dynamometer (12) which is used as a system load and a generator at the same time, the variable emulsion motor (10) is connected with a tested emulsion pump (15) through a second one-way valve (6), a flowmeter (9) and a pressure gauge (8) for measuring the flow and the pressure of the hydraulic system are arranged between the second one-way valve (6) and the variable emulsion motor (10), and the dynamometer (12) is connected with the variable emulsion motor (10) through a first coupler (11);

the energy circulation system is respectively connected with the dynamometer (12) and the emulsion pump driving motor (13) through a second reactor (22) and a sine wave filter (23), the second reactor (22) is connected with a second inverter (16), the sine wave filter (23) is connected with a first inverter (21), and the first inverter (21) and the second inverter (16) are both connected with the direct current connecting end of the rectifier (17); the power grid (19) is connected with the alternating current connection end of the rectifier (17) through the transformer (18) and the first reactor (1).

2. The emulsification pump and pump station testing system for realizing energy circulation according to claim 1, wherein: the outlet of the variable emulsion motor (10) is connected with the emulsion tank (3) through a first one-way valve (5).

3. The emulsification pump and pump station testing system for realizing energy circulation according to claim 1 or 2, wherein: and a cooler (7) is arranged between the variable emulsion motor (10) and the first one-way valve (5).

4. The emulsification pump and pump station testing system for realizing energy circulation according to claim 1, wherein: and switches (20) are additionally arranged between the second reactor (22) and the second inverter (16) and between the sine wave filter (23) and the first inverter (21).

5. The emulsification pump and pump station testing system for realizing energy circulation according to claim 1, wherein: the rectifier (17) is connected to a power grid (19) via a first reactor (1) and a transformer (18).

6. The system for testing the emulsification pump and the pump station for realizing the energy circulation according to the claim 1 or 5, which is characterized in that: and a switch (20) for controlling the starting of a circuit system is additionally arranged between the transformer (18) and the first reactor (1).

7. The system for testing the emulsification pump and the pump station for realizing the energy circulation according to any one of claims 1 to 6, wherein: the number of the emulsion pump sets is not less than two.

8. An emulsion pump and a pump station testing method for realizing energy circulation are characterized in that: the energy circulation system is connected pressure test system and emulsion pump test system, realizes energy cyclic utilization through dynamometer (12), and the electric energy of conversion transmits to first inverter (21) through second reactor (22) and second inverter (16), gets into emulsion pump test system once more, specifically includes the following steps:

step 1, closing a switch (20), and after power is taken through a power grid (19), transmitting alternating current to a transformer (18) and a first reactor (1) through a high-voltage cable to a rectifier (17) for AC/DC conversion;

step 2, the converted direct current is introduced into a first inverter (21) to carry out DC/AC conversion, the direct current passes through a sine wave filter (23) and then drives an emulsion pump driving motor (13), a second coupler (14) is used for driving a detected emulsion pump (15), high-pressure liquid is discharged through a high-pressure liquid discharge port of the emulsion pump (15), the high-pressure liquid discharge port is connected with a second one-way valve (6) for preventing backflow through a rubber pipe, a flow meter (9) measures the flow of a hydraulic system, and a pressure gauge (8) measures the pressure of the hydraulic system;

and 3, driving the emulsion variable motor (10) to rotate by high-pressure liquid discharged from the high-pressure liquid discharge port, driving the dynamometer (12) to rotate by the first coupler (11), using the dynamometer (12) as a load to convert kinetic energy into electric energy, transmitting the converted electric energy to the first inverter (21) through the second reactor (22) and the second inverter (16), and then enabling the electric energy to enter the emulsion pump set testing system again through the sine wave filter (23) to realize energy recycling.

Technical Field

The invention relates to the technical field of testing of emulsion pumps and pump stations, in particular to an emulsion pump and pump station testing system and method for realizing energy circulation.

Background

The emulsion pump and the emulsion pump station are power sources of a coal mine fully-mechanized mining working face and are used for conveying high-pressure emulsion to a fully-mechanized mining working face hydraulic support or a high-grade common mining working face single hydraulic support and the like, and the performance and reliability of the emulsion pump and the emulsion pump station directly influence the working performance and the using effect of the hydraulic support and play an important role in the whole coal mine production; the existing emulsion pump and pump station test system mainly adopts an overflow loading mode, has high test cost, large heat productivity and is not energy-saving and environment-friendly, so that an advanced test system is urgently needed to detect the comprehensive performance of the emulsion pump and the pump station.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an emulsion pump and a pump station testing system for realizing energy circulation.

In order to achieve the purpose, the invention provides the following technical scheme:

an emulsion pump and pump station test system for realizing energy circulation comprises an emulsion pump test system, a pressure test system and an energy circulation system, wherein the emulsion pump test system comprises a plurality of emulsion pump groups which are connected in parallel and are connected with the energy circulation system and the pressure test system; the pressure testing system comprises a variable emulsion motor and a dynamometer which is used as a system load and a generator at the same time, the variable emulsion motor is connected with a tested emulsion pump through a second one-way valve, a flowmeter and a pressure gauge for measuring the flow and the pressure of the hydraulic system are arranged between the second one-way valve and the variable emulsion motor, and the dynamometer is connected with the variable emulsion motor through a first coupler; the energy circulation system is respectively connected with the dynamometer and the emulsion pump driving motor through a second reactor and a sine wave filter, the second reactor is connected with a second inverter, the sine wave filter is connected with a first inverter, and the first inverter and the second inverter are both connected with the direct current connecting end of the rectifier; and the power grid is connected with the alternating current electric connection end of the rectifier through the transformer and the first reactor.

Further, the outlet of the variable emulsion motor is connected with the emulsion tank through a first one-way valve.

Further, a cooler is arranged between the variable emulsion motor and the first one-way valve.

Further, switches are additionally arranged between the second reactor and the second inverter and between the sine wave filter and the first inverter.

Further, the rectifier is connected with the power grid through the first reactor and the transformer.

Further, a switch for controlling the circuit system to be started is additionally arranged between the transformer and the first reactor.

Further, the number of the emulsion pump sets is not less than two.

The utility model provides an emulsion pump and pump station test method of realizing energy circulation, energy circulation system connects pressure test system and emulsion pump test system, realizes energy cyclic utilization through the dynamometer machine, and the electric energy of conversion passes through second reactor and second inverter transmission to first inverter, gets into emulsion pump test system once more, specifically includes the following step:

step 1, closing a switch, and after power is taken through a power grid, transmitting alternating current to a transformer and a first reactor through a high-voltage cable and transmitting the alternating current to a rectifier for AC/DC conversion;

step 2, the converted direct current is conducted into a first inverter to carry out DC/AC conversion, the direct current passes through a sine wave filter and then drives an emulsion pump driving motor, a second coupling is used for driving the emulsion pump to be detected, high-pressure liquid is discharged through a high-pressure liquid discharge port of the emulsion pump, the high-pressure liquid discharge port is connected with a second one-way valve for preventing backflow through a rubber pipe, a flow meter measures the flow of a hydraulic system, and a pressure gauge measures the pressure of the hydraulic system;

and 3, driving the emulsion variable motor to rotate by high-pressure liquid discharged from the high-pressure liquid discharge port, driving the dynamometer to rotate by the first coupler, converting kinetic energy into electric energy by taking the dynamometer as a load, transmitting the converted electric energy to the first inverter through the second reactor and the second inverter, and then re-entering the emulsion pump set testing system through the sine wave filter to realize energy recycling.

In conclusion, the invention has the following beneficial effects:

the invention of the test system can complete the test by continuously changing the dynamometer to change the system pressure, replaces the original loading mode of the emulsion pump test system, and provides a set of advanced test method for the current high-flow and high-power emulsion pump and pump station; the invention is suitable for the tests of emulsion pumps and pump stations with different models and different powers, has high automation degree, can realize on-line monitoring and remote control, has simple structure, convenient operation, safety and reliability, and can meet the tests of emulsion pumps and pump stations with different pressures, different flows and different voltage levels; the invention has the advantages of low consumption, high efficiency, more scientific and reasonable performance in the test process, great promotion effect on the research of the emulsion pump with high load and large flow, and contribution to the healthy and rapid development of the emulsion pump industry.

Drawings

Fig. 1 is a schematic diagram of the present invention.

FIG. 2 is a schematic diagram of an emulsion pump station testing system of the present invention.

In the figure: 1-a first reactor, 2-a first emulsion pump group, 3-an emulsion tank, 4-a liquid absorption filter, 5-a first one-way valve, 6-a second one-way valve, 7-a cooler, 8-a pressure gauge, 9-a flow meter, 10-a variable emulsion motor, 11-a first coupler, 12-a dynamometer, 13-an emulsion pump driving motor, 14-a second coupler, 15-a tested emulsion pump, 16-a second inverter, 17-a rectifier, 18-a transformer, 19-a power grid, 20-a switch, 21-a first inverter, 22-a second reactor, 23-a sine wave filter, 24-a second emulsion pump group, 25-a third emulsion pump group and 26-an emulsion pump group.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the invention discloses an emulsion pump and pump station test system for realizing energy circulation, which comprises an emulsion pump test system, a pressure test system and an energy circulation system, wherein the emulsion pump test system comprises a plurality of emulsion pump groups, the plurality of emulsion pump groups are all connected with the energy circulation system and the pressure test system, the number of the emulsion pump groups is not less than two, each emulsion pump group comprises a tested emulsion pump 15 and an emulsion pump driving motor 13, and the emulsion pump driving motor 13 is connected with the tested emulsion pump 15 through a second coupler 14; the pressure testing system comprises a dynamometer 12 and a variable emulsion motor 10, wherein the dynamometer 12 is used as a system load and a generator, the dynamometer 12 selects CGJ93FV-660, the variable emulsion motor 10 is connected with a tested emulsion pump 15 through a second one-way valve 6, a flowmeter 9 and a pressure gauge 8 for measuring the flow and the pressure of a hydraulic system are arranged between the second one-way valve 6 and the variable emulsion motor 10, the outlet of the variable emulsion motor 10 is connected with an emulsion tank 3 through a first one-way valve 5, and a cooler 7 is arranged between the variable emulsion motor 10 and the first one-way valve 5; the dynamometer 12 is connected with the variable emulsion motor 10 through a first coupler 11; the energy circulation system is respectively connected with the dynamometer 12 and the emulsion pump driving motor 13 through a second reactor 22 and a sine wave filter 23, the second reactor 22 is connected with a second inverter 16, the sine wave filter 23 is connected with a first inverter 21, and switches 20 are additionally arranged between the second reactor 22 and the second inverter 16 and between the sine wave filter 23 and the first inverter 21; the first inverter 21 and the second inverter 16 are both connected with a direct current connecting end of the rectifier 17, energy recycling is achieved between the first inverter 21 and the second inverter 16 through a direct current bus energy closed loop, an alternating current connecting end of the rectifier 17 is connected with a power grid 19 through a first reactor 1 and a transformer 18, a switch 20 for controlling a circuit system to be opened is additionally arranged between the transformer 18 and the first reactor 1, and all three switches are kept in a closed connection state in the test process.

In the embodiment shown in fig. 2, the emulsion pump testing system uses three emulsion pump sets, that is, a first emulsion pump set 2, a second emulsion pump set 24 and a third emulsion pump set 25, which together form an emulsion pump station 26, the three emulsion pump sets are connected with the pressure testing system through a second check valve 6 in a parallel connection manner, the three emulsion pump sets are connected with an energy circulation system, the connection can realize simultaneous testing of a plurality of emulsion pumps to be tested, and energy complementation is realized between different emulsion pump sets through the pressure testing system and the energy circulation system.

The invention also discloses an emulsion pump and a pump station testing method for realizing energy circulation, wherein an energy circulation system is connected with a pressure testing system and an emulsion pump testing system, energy is recycled through a dynamometer 12, the converted electric energy is transmitted to a first inverter 21 through a second reactor 22 and a second inverter 16 and enters the emulsion pump testing system again, and the method specifically comprises the following steps:

step 1, closing a switch 20, taking electricity through a power grid 19, transmitting the electricity to a transformer 18 through a high-voltage cable, transmitting alternating current to a rectifier 17 through a first reactor 1 to perform AC/DC conversion, wherein the switch 20 is used for controlling a circuit system to be turned on and off, the switch connected between the transformer and the first reactor 1 controls the whole test system to be turned on or turned off, and in the test process, all three switches are kept in a closed communication state; the transformer 18 is connected with the power grid 19 to take power, so that energy loss in the emulsion pump and pump station testing system is compensated.

And 2, the direct current converted by the rectifier 17 is introduced into a first inverter 21, the direct current is subjected to DC/AC conversion by the first inverter 21, the whole system adopts an AC-DC-AC frequency conversion structure, the cost is low, the performance is stable, the direct current passes through a sine wave filter 23 and then drives an emulsion pump driving motor 13, a second coupling 14 is used for driving a detected emulsion pump 15, a liquid suction port of the detected emulsion pump 15 sucks the emulsion in an emulsion tank 3 through a liquid suction filter 4, high-pressure liquid is discharged through a high-pressure liquid discharge port of the emulsion pump 15, the high-pressure liquid discharge port is connected with a second one-way valve 6 for preventing backflow through a rubber pipe, and a pressure gauge 8 and a flow meter 9 are used for respectively measuring the pressure and the flow of a hydraulic system, namely the high-pressure.

And 3, driving the emulsion variable motor 10 to rotate by high-pressure liquid at the high-pressure liquid outlet, driving the dynamometer 12 to rotate by the first coupler 11, converting kinetic energy into electric energy by taking the dynamometer 12 as a load, transmitting the converted electric energy to the first inverter 21 through the second reactor 22 and the second inverter 16, and then enabling the electric energy to enter the emulsion pump set testing system again through the sine wave filter 23 to realize energy recycling.

The dynamometer 12 is used for loading the emulsion pump 15 to be tested, and in the testing process, when the pressure of the emulsion pump 15 to be tested needs to be increased, namely the pressure of the emulsion pump set testing system needs to be increased, the torque of the dynamometer 12 is increased to provide a load, and at the moment, the dynamometer 12 generates electricity and supplies power to the energy circulation system; meanwhile, the displacement of the variable emulsion pump motor 10 is reduced, the rotating speed is reduced, the pressure of the variable emulsion pump motor 10 is increased, the outlet pressure of the emulsion pump 15 to be tested is increased, the working pressure of the testing system is increased, and the testing data of the emulsion pump station 26 are observed and recorded through the pressure gauge 8 and the flowmeter 9. And continuously adjusting the torque of the dynamometer 12 according to the continuous change of the loading torque of the dynamometer 12 and the continuous change of the pressure testing system, so as to continuously adjust the pressure at the outlet of the emulsion pump 15, achieve the purpose of testing the emulsion pump 15 to be tested, and complete the forming test and the performance test.

After an emulsion pump driving motor 13 in an emulsion pump set 2 is powered and started through a power grid 19, a tested emulsion pump 15 is driven to rotate, high-pressure liquid is provided to drive a variable emulsion motor 10 to rotate, a dynamometer 12 is driven to rotate through a first coupler 11 to generate electricity, the dynamometer 12 utilizes an inverter and a reactor to feed back electric energy to the emulsion pump driving motor 13, the power grid 19 compensates energy loss for an emulsion pump set testing system, energy recycling in the emulsion pump set testing process is realized, low energy consumption and high efficiency are realized in the testing process, the method is more scientific and reasonable, and the development of the emulsion pump industry is facilitated.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.