CN215633689U

CN215633689U - Double high-low pressure pump test bed

Info

Publication number: CN215633689U
Application number: CN202122155946.3U
Authority: CN
Inventors: 赵焕军; 常宝龄
Original assignee: Wuhu Pfister Electrohydraulic Technology Co ltd
Current assignee: Wuhu Pfister Electrohydraulic Technology Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-01-25
Anticipated expiration: 2031-09-08

Abstract

The utility model provides a double-high-low pressure pump test bed which comprises two groups of high-low pressure pump sets, wherein each group of high-low pressure pump sets comprises a high-pressure pump and a low-pressure pump, oil passages formed by the two groups of low-pressure pumps are respectively connected with oil outlets, the two groups of low-pressure pumps form two communicated converging oil passages, and the two communicated converging oil passages are respectively communicated with the oil outlets and a filter oil tank. According to the double-high-low pressure pump test bed provided by the utility model, two groups of high-low pressure pumps are arranged for testing, the two groups of low pressure pumps can be used independently or can be selected to be converged to form a new test range, each group of high-low pressure pumps corresponds to one oil port, so that the number of the oil ports is increased, the test function is increased, and the installed power is reduced.

Description

Double high-low pressure pump test bed

Technical Field

The utility model mainly relates to the technical field of hydraulic pressure, in particular to a double high-low pressure pump test bed.

Background

After the hydraulic element is assembled, a pressure resistance test, a performance test, a leakage test, a pressure calibration and the like are required. Testing is typically performed using a test stand. The existing experiment table is generally only provided with one group of high-low pressure pumps for testing, and the testing range is small.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model provides a double-high-low pressure pump test bed, which is used for solving the technical problems that the existing test bed in the background technology only has one group of high-low pressure pumps for testing and the testing range is smaller.

2. Technical content

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a two high-low pressure pump test benches, includes two sets of high-low pressure pump package, and every group high-low pressure pump package all includes a high-pressure pump and a low-pressure pump, and is two sets of the oil duct that the low-pressure pump formed connects the oil-out respectively, and is two sets of the low-pressure pump forms two intercommunication confluence oil ducts, and two intercommunication confluence oil ducts communicate oil-out and filter oil case respectively.

Furthermore, an oil return filter is connected to an oil inlet of the filtering oil tank and can be communicated with the oil tank and the two high-pressure pumps, and the oil return filter ensures the cleanliness of the oil tank and the cleanness of oil at each test oil outlet.

Furthermore, a safety valve is arranged in an oil passage between the two high-pressure pumps and the oil outlet for draining to a drainage port.

Furthermore, a safety valve and a reversing valve are arranged in an oil passage between the two high-pressure pumps and the oil outlet for draining to a drainage port.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

according to the double-high-low pressure pump test bed provided by the utility model, two groups of high-low pressure pumps are arranged for testing, the two groups of low pressure pumps can be used independently or can be selected to be converged to form a new test range, each group of high-low pressure pumps corresponds to one oil port, so that the number of the oil ports is increased, the test function is increased, and the installed power is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic hydraulic diagram of the test stand of the present invention.

Detailed Description

Reference will now be made in detail to various exemplary embodiments of the utility model, the detailed description should not be construed as limiting the utility model but as a more detailed description of certain aspects, features and embodiments of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.

Referring to fig. 1, a double high-low pressure pump test bed comprises an oil tank 1.1, wherein the oil tank 1.1 is respectively connected with an oil filter tank 1.2 and a low pressure pump 3.1 and a low pressure pump 3.2 in two groups of pump groups, the oil filter tank 1.2 is respectively communicated with a high pressure pump 4.1 and a high pressure pump 4.2 in the two groups of pump groups, the two low pressure pumps can select gear pumps with a pressure grade of 60Bar, one high pressure pump 4.2 can select gear pumps with a pressure grade of 280Bar, and the other high pressure pump 4.1 can use a radial pump with a pressure grade of 550 Bar; an integrated valve block is also arranged to realize the distribution and pressure protection of an oil way;

wherein the low-pressure pump 3.1 is communicated with a three-way manual reversing valve 5.1 through a pipeline, and the other two outlets of the manual reversing valve 5.1 are respectively connected with a test port P2 and an oil return filter 6;

the other low-pressure pump 3.2 is also communicated with a three-way manual reversing valve 5.2 through a pipeline, the other two outlets of the manual reversing valve 5.2 are respectively connected with a testing port P3 and flow into an oil return filter 6 in a confluence manner with the other low-pressure pump 3.1, a confluence oil passage a is formed at the position, and the oil return filter 6 is connected with an oil filter tank 1.2; wherein, another confluence oil passage b is communicated in the passage of the low pressure pump 3.1 flowing to the test port P2, and the confluence oil passage realizes the confluence of the two low pressure pumps and flows to a test port P3, thus forming a new flow range 120 LPM.

The two groups of high-pressure pumps are provided with safety oil ducts in oil ducts flowing to a working oil port, the two safety oil ducts are realized by using normally open electromagnetic directional valves 7.1 and 7.2 and safety valves 8.1 and 8.2, when the electromagnetic directional valve 7.1 does not work, the high-pressure pump 4.1 oil duct is decompressed and flows to a decompression port T1, similarly, the high-pressure pump 4.2 oil duct is decompressed and flows to a decompression port T2, the safety oil ducts are communicated in the two groups of low-pressure pump test oil ducts, the safety oil ducts are realized by a straight-flow overflow valve 9, the straight-flow overflow valve 9 enables the low-pressure oil duct to decompress and flow to an oil return filter 6 and then flow to a filter oil tank 1.2, and when the filter oil tank 1.2 is overfilled, the oil return can be circulated to the oil tank 1.1.

Specifically, in FIG. 1, the integrated valve block is arranged on a test bench, wherein the G port is a process port (G1-G10) which is arranged for convenience of inspection; the P port is a testing port (P1-P4), the M port is a pressure measuring port (M1-M4), the test bed is connected with the upper portion and the lower portion of the table board through a channel, oil ports such as P1 ', M1' in the figure are communicated with an oil pump for oil outlet and a pressure gauge from the lower portion of the test bed integrated valve block, and oil ports on the upper portion of the test bed integrated valve block are testing oil outlets (P1, M1, P2 and the like), so that overflow of hydraulic oil can be reduced; the T ports (T1, T2) are drainage ports and are used for safe drainage.

In summary, according to the double-high-low pressure pump test bed provided by the utility model, two groups of high-low pressure pumps are arranged for testing, the two groups of low pressure pumps can be used independently or can be selected to be converged to form a new test range, each group of high-low pressure pumps corresponds to one oil port, so that the number of the oil ports is increased, the test function is increased, and the installed power is reduced.

The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.

Claims

1. Two high-low pressure pump test benches, its characterized in that: the oil-saving filter comprises two groups of high-pressure and low-pressure pump sets, wherein each group of high-pressure and low-pressure pump set comprises a high-pressure pump and a low-pressure pump, oil passages formed by the two groups of high-pressure and low-pressure pump sets are respectively connected with oil outlets, and the two groups of high-pressure and low-pressure pump sets are respectively connected with two communicating confluence oil passages formed between the low-pressure pumps, and the two communicating confluence oil passages are respectively communicated with the oil outlets and a filter oil tank.

2. The double high-low pressure pump test bed according to claim 1, wherein an oil return filter is connected to an oil inlet of the filter oil tank, and the filter oil tank can be communicated with the oil tank and the two high-pressure pumps.

3. The dual high and low pressure pump test stand of claim 1, wherein a safety valve and a reversing valve are further arranged in an oil passage between the two high pressure pumps and the oil outlet for draining to a drainage port.