CN111413205A - A dual medium pressure test system and method - Google Patents

Abstract

The invention provides a dual-medium pressure test system and method. After the gas flows out of the gas storage, it first passes through a first branch, and then is divided into a second branch and a third branch. The second branch leads to the workpiece to be tested, and the third branch The three branches lead to the high-pressure water storage tank; the liquid flows out from the high-pressure water storage tank through the fourth branch, and the second branch and the fourth branch are combined into a fifth branch to reach the tested workpiece; the second electric valve is in the second branch. On the branch road, the third electric valve is on the third branch road, the fourth electrical valve is on the fourth branch road, and the first pressure detection unit is arranged outside the pipeline of the fifth branch road; the air pressure control module is set to compare the first pressure detection unit The air pressure detected by the unit and the preset first preset pressure control the on-off of the second electric valve; the hydraulic control module is set to compare the hydraulic pressure detected by the first pressure detection unit with the preset second preset pressure, and control the second electric valve. The three electric valve and the fourth electric valve are on and off. The system is highly integrated, reducing disassembly time and labor costs.

Description

A dual medium pressure test system and method

technical field

The invention relates to the field of test control of the pressure bearing capacity of a workpiece, in particular to a dual-medium pressure test system and method.

Background technique

In order to check whether the pressure bearing capacity of a special workpiece or equipment meets the design requirements, it is necessary to carry out both hydraulic and pneumatic tests on the workpiece or equipment.

At present, the common practice of hydraulic test is to use water as the medium and use a pneumatic booster pump to perform manual booster operation; for air pressure test, high-pressure nitrogen or air is usually decompressed and output to the target pressure for booster operation.

Since the pneumatic booster pump needs to be manually operated, there is a risk of overpressure during the hydraulic test; the above two systems operate independently and have a single function. In order to perform the hydraulic and pneumatic dual-medium pressure test, the same workpiece needs to be disassembled frequently, which affects the work efficiency at the same time. Increased risk of interface damage.

In view of this, it is urgent to design a dual-medium pressure test system and method that avoids frequent disassembly of the interface and can increase work efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a dual-medium pressure test system and method.

The invention provides a dual-medium pressure test system, comprising: a gas storage, a high-pressure water storage, a first pressure detection unit, a control unit, a second electric valve, a third electric valve and a fourth electric valve; After the storage flows out, it first passes through the first branch, and then is divided into a second branch and a third branch, the second branch leads to the workpiece to be tested, and the third branch leads to the high-pressure water storage tank; The liquid flows into the high-pressure water storage tank from the water inlet pipe, and the water outlet pipe flows out through the fourth branch, and the second branch and the fourth branch are combined into a fifth branch to reach the tested workpiece; the first branch Two electric valves are arranged on the second branch, the third electric valve is arranged on the third branch, the fourth electric valve is arranged on the fourth branch, and the first pressure detection unit is arranged Outside the pipeline of the fifth branch; the control unit includes: an air pressure control module configured to compare the air pressure detected by the first pressure detection unit with a preset first preset pressure, when the air pressure is less than When the first preset pressure is used, the second electric valve is opened, and when the air pressure reaches the first preset pressure, the second electric valve is closed; the hydraulic control module is configured to compare the The hydraulic pressure detected by the first pressure detection unit is the same as the preset second preset pressure, and when the hydraulic pressure is less than the second preset pressure, the third electric valve and the fourth electric valve are opened, and the third electric valve and the fourth electric valve are opened. When the hydraulic pressure reaches the second preset pressure, the fourth electric valve is closed.

According to an aspect of the present invention, the dual-medium pressure test system further includes: a fifth electric valve disposed on the outlet pipe of the tested workpiece; the control unit further includes: an air pressure maintaining module, configured to After the test workpiece reaches the set time of pressure holding under the first preset pressure value, the fifth electric valve is opened to release the pressure until the air pressure of the first pressure detection unit is zero, and the air pressure test process is completed; The hydraulic pressure maintaining module is set to open the fifth electric valve to release the pressure after the tested workpiece reaches the second preset pressure value for the set time, until the pressure of the first pressure detection unit is reached. The hydraulic pressure is zero, and the hydraulic test process is completed.

According to an aspect of the present invention, the dual-medium pressure test system further includes: an external air source, a gas booster pump, a second pressure detection unit and a first electric valve, the second pressure detection unit is disposed in the first branch On the outside of the pipeline, the first electric valve is arranged between the external air source and the gas booster pump, and the outlet of the first electric valve is used to communicate with the medium gas inlet of the gas booster pump ; the control unit further comprises: an inflation module, which sets the third preset pressure value of the gas storage, and collects the third pressure value of the second pressure detection unit, if the third pressure value is lower than the third preset pressure If the third pressure value reaches the third preset pressure value, the first electric valve is closed.

According to an aspect of the present invention, the dual-medium pressure test system further includes: a liquid level detection unit disposed outside the liquid storage portion of the high-pressure water storage unit; the control unit further includes: a water-filling module, disposed in the high-pressure water storage unit The preset liquid level value of the water tank is collected, and the real-time liquid level value of the liquid level detection unit is collected. If the real-time liquid level value is lower than the preset liquid level value, the water inlet pipe of the high-pressure water storage tank is opened; When the level value reaches the preset liquid level value, the water inlet pipe of the high-pressure water storage device is closed to complete the water filling process of the high-pressure water storage device.

According to one aspect of the present invention, the control unit further includes: an alarm module, which sets the low-level threshold and the high-level threshold of the high-pressure water storage device, and collects the real-time liquid level value of the liquid level detection unit. If the real-time liquid level value reaches When the low threshold or high threshold is reached, an alarm signal is issued.

According to an aspect of the present invention, the dual-medium pressure test system further includes: a third pressure detection unit, disposed outside the gas storage part of the high-pressure water storage unit; the control unit further includes: a pressure-measuring module, configured to set the high-pressure The fourth preset pressure value of the water storage device, collect the fourth pressure value of the third pressure detection unit, if the fourth pressure value is lower than the fourth preset pressure value, open the third electric valve; When the fourth pressure value reaches the fourth preset pressure value, the third electric valve is closed.

In another aspect, the present invention provides a dual-medium pressure test method, the dual-medium pressure test device includes a gas storage, a high-pressure water storage, a first pressure detection unit, a control unit, a second electric valve, a third electric valve and a fourth electric valve An electric valve, the control method includes: after the gas flows out of the gas storage, it first passes through a first branch, and then is divided into a second branch and a third branch, and the second branch leads to the workpiece to be tested, so The third branch leads to the high-pressure water storage tank; the liquid flows into the high-pressure water storage tank from the water inlet pipe, and the water outlet pipe flows out through the fourth branch circuit, and the second branch circuit and the fourth branch circuit are combined into a The fifth branch reaches the tested workpiece; the second electric valve is set on the second branch, the third electric valve is set on the third branch, and the fourth electric valve is set on the On the fourth branch, set the first pressure detection unit outside the pipeline of the fifth branch; compare the air pressure detected by the first pressure detection unit with a preset first preset pressure, and the air pressure When the pressure is lower than the first preset pressure, open the second electric valve, and when the air pressure reaches the first preset pressure, close the second electric valve; compare the detection of the first pressure detection unit The hydraulic pressure is equal to the preset second preset pressure, and when the hydraulic pressure is less than the second preset pressure, the third electric valve and the fourth electric valve are opened, and when the hydraulic pressure reaches the second preset pressure, the third electric valve and the fourth electric valve are opened. When the second preset pressure is reached, the fourth electric valve is closed.

According to an aspect of the present invention, the dual-medium pressure test device includes a fifth electric valve, which is arranged on the outlet pipe of the workpiece to be tested, and the control method further includes: setting the workpiece to be tested at a first preset When the pressure is maintained at the set time under the pressure value, the fifth electric valve is opened to release the pressure until the air pressure of the first pressure detection unit is zero, and the air pressure test process is completed; set the workpiece to be tested in the second For the time set for maintaining the pressure under the preset pressure value, the fifth electric valve is opened to release the pressure until the hydraulic pressure of the first pressure detection unit is zero, and the hydraulic test process is completed.

According to an aspect of the present invention, the dual-medium pressure test device includes an external air source, a gas booster pump, a second pressure detection unit and a first electric valve, and the control method further includes: setting the second pressure detection unit On the outside of the pipeline of the first branch, the first electric valve is arranged between the external gas source and the gas booster pump, and the outlet of the first electric valve is used to communicate with the gas booster. The medium gas inlet of the pressure pump is connected; the third preset pressure value of the gas storage is set, and the third pressure value of the second pressure detection unit is collected. If the third pressure value is lower than the third preset pressure value, the The first electric valve is opened; if the third pressure value reaches a third preset pressure value, the first electric valve is closed.

According to an aspect of the present invention, the dual-medium pressure test device includes a liquid level detection unit, which is arranged outside the liquid storage part of the high-pressure water storage tank, and characterized in that, the control method further includes: setting the high-pressure storage tank The preset liquid level value of the water tank is collected, and the real-time liquid level value of the liquid level detection unit is collected. If the real-time liquid level value is lower than the preset liquid level value, the water inlet pipe of the high-pressure water storage tank is opened; When the level value reaches the preset liquid level value, the water inlet pipe of the high-pressure water storage device is closed to complete the water filling process of the high-pressure water storage device.

According to an invention of the present invention, the dual-medium pressure test method further includes: setting a low-level threshold value and a high-level threshold value of the high-pressure water reservoir, and collecting the real-time liquid level value of the liquid level detection unit, if the real-time liquid level value reaches the low-level threshold value Or when the threshold is high, an alarm signal is issued.

According to an invention of the present invention, the dual-medium pressure test device includes a third pressure detection unit disposed outside the gas storage portion of the high-pressure water storage device, and the control method further includes: setting a pressure detection unit of the high-pressure water storage device a fourth preset pressure value, collect the fourth pressure value of the third pressure detection unit, if the fourth pressure value is lower than the fourth preset pressure value, open the third electric valve; if the fourth pressure value reaches the fourth preset pressure value, the third electric valve is closed.

The control unit in the control system of the dual-medium pressure test device provided by the present invention includes an air pressure control module and a hydraulic pressure control module. When the workpiece 500 to be tested is subjected to the air pressure test, the first pressure detection unit 601 detects the pressure in the fifth branch pipeline in real time. air pressure to control the on-off of the second electric valve 702; when the tested workpiece 500 is subjected to the hydraulic test, the first pressure detection unit 601 detects the hydraulic pressure in the fifth branch pipeline in real time, and controls the third electric valve 703 and the fourth electric valve On-off of valve 704. The control system of the dual-medium pressure test device can realize the free switching of liquid and gas as the pressing medium, improve the integration of the system, reduce the disassembly time and labor cost, and improve the work efficiency.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the scope of the invention as claimed.

Description of drawings

The accompanying drawings, which are part of the specification of the invention, illustrate exemplary embodiments of the invention and, together with the description of the specification, serve to explain the principles of the invention.

1 is a schematic diagram of a dual-medium pressure test system according to an embodiment of the present invention;

2 is a schematic diagram of a dual-medium pressure test system according to an embodiment of the present invention;

3 is a schematic diagram of a control unit in a dual-medium pressure test system according to an embodiment of the present invention.

Description of reference numbers:

100-External air source, 200-Gas booster pump, 300-Gas storage, 400-High-pressure water reservoir, 500-Tested workpiece, 601-First pressure detection unit, 602-Second pressure detection unit, 603-No. Three pressure detection units, 604 - liquid level detection unit, 701 - first electric valve, 702 - second electric valve, 703 - third electric valve, 704 - fourth electric valve, 705 - fifth electric valve.

Detailed ways

The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention, are used to exemplify the principles of the present invention, and are not configured to limit the present invention. Additionally, the machine components in the figures are not necessarily drawn to scale. For example, the dimensions of some of the structural elements or regions in the figures may be exaggerated for other structural elements or regions to facilitate an understanding of embodiments of the present invention.

Orientation words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ground connection; either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

Furthermore, the terms "comprising," "comprising," "having," or any other variation thereof are intended to encompass a non-exclusive inclusion, whereby a structure or component that includes a list of elements includes not only those elements, but also includes not explicitly listed or inherent belong to structural parts, other mechanical parts on components. Without further limitation, an element defined by the phrase "comprising" does not preclude the presence of additional identical elements in the article or device comprising the element.

Spatial relational terms such as "below," "below," "below," "lower," "above," "above," "higher," etc. are used to facilitate description to explain an element relative to a The orientation of the two elements means that these terms are intended to encompass different orientations of the device in addition to orientations other than those shown in the figures. In addition, for example, "one element is on/under the other" can mean that two elements are in direct contact with each other, or that there are other elements between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be regarded as limiting. Similar terms refer to similar elements throughout the description.

It will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention.

FIG. 1 is a schematic diagram of a dual-medium pressure test device according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a dual-medium pressure test system according to an embodiment of the present invention, and FIG. 3 is a control diagram of the dual-medium pressure test system according to an embodiment of the present invention. Schematic diagram of the unit.

As shown in FIG. 1, a dual-medium pressure test device includes: a gas booster pump 200, a gas storage 300 and a high-pressure water storage 400; an external gas source 100 pressurizes the gas through the gas booster pump 200 and transmits the gas to the gas storage 300; after the gas flows out of the gas storage 300, it first passes through the first branch, and then is divided into a second branch and a third branch. The second branch leads to the tested workpiece 500, and the third branch leads to the high-pressure water storage device. 400 ; the liquid flows from the water inlet pipe into the high-pressure water storage device 400 , the water outlet pipe flows out through the fourth branch, and the second branch and the fourth branch are combined into a fifth branch to reach the tested workpiece 500 .

Specifically, the gas booster pump 200 adopts a pneumatic reciprocating pump, and the pipelines between the external gas source 100, the gas booster pump 200, the gas storage 300, and the high-pressure water storage 400 are all connected by stainless steel pipes, and a dual-medium pressure test is added. For the durability of the device, hoses are used for the pipelines between the high pressure water reservoir 400 and the tested workpiece 500 and the water inlet pipe of the high pressure water reservoir 400 and the water outlet pipe of the tested workpiece 500 to facilitate the flow of liquid. The external gas source 100 is pressurized by the gas booster pump 200 and then transferred to the gas storage 300, and the gas storage 300 is used as the only pressure source for dual-medium pressing. The external gas source 100 adopts any gas source such as an external helium cylinder, an external nitrogen cylinder or an external compressed air, and the liquid in the high-pressure water storage device 400 can be pure water or ultrapure water.

In the present invention, after the gas flows out of the gas storage 300, it first passes through the first branch, and then is divided into a second branch and a third branch. The second branch leads to the workpiece 500 to be tested, and the third branch leads to the high-pressure storage Water dispenser 400. The liquid flows into the high-pressure water accumulator 400 from the water inlet pipe, and is pressurized to the high-pressure water accumulator 400 through the gas accumulator 300, so that the liquid flowing out of the water outlet pipe of the high-pressure water accumulator 400 passes through the fourth branch, the second branch and the fourth branch Merge into the fifth branch to reach the tested workpiece 500 . During the air pressure test, the gas in the gas storage 300 goes directly from the second branch to the workpiece to be tested. During the hydraulic test, the gas in the gas storage 300 exerts pressure on the liquid in the high-pressure water storage 400, and the liquid flows from the fourth branch to the tested workpiece. artifact. The integrated dual-medium pressure test device solves the premise of dual-medium pressure test, the same workpiece can reduce frequent disassembly of the interface, and avoid the risk of equipment damage, and use high-pressure gas as the pressure source to reduce the risk of pressure control lag .

The high-pressure water storage device 400 is divided into two parts, the first part is located at the upper part of the high-pressure water storage device 400 for storing gas, and the second part is located at the lower part of the high-pressure water storage device 400 and is used for storing liquid. The high-pressure water accumulator 400 reserves space for the first part of the air to be directly connected to the gas accumulator 300. When the water pressure test is performed, the gas accumulator 300 pressurizes the gas in the first part, so that the liquid of the high-pressure water accumulator 400 is pressurized and transported to the gas accumulator 300. 500 workpieces to be tested.

As shown in FIG. 2 and FIG. 3 , the present invention provides a dual-medium pressure test system, which may include the above-mentioned dual-medium pressure test device, wherein the dual-medium pressure test device includes: a gas storage 300, a high-pressure water storage 400, a first The pressure detection unit 601, the control unit, the second electric valve 702, the third electric valve 703 and the fourth electric valve 704; the second electric valve 702 is arranged on the second branch, the third electric valve 703 is arranged on the third branch, The fourth electric valve 704 is arranged on the fourth branch, and the first pressure detection unit 601 is arranged on the outside of the pipeline of the fifth branch; the control unit includes: an air pressure control module, which is configured to compare the air pressure detected by the first pressure detection unit 601 with the air pressure detected by the first pressure detection unit 601. The preset first preset pressure, when the air pressure is less than the first preset pressure, open the second electric valve 702, and when the air pressure reaches the first preset pressure, close the second electric valve 702; the hydraulic control module is set In order to compare the hydraulic pressure detected by the first pressure detection unit 601 with the preset second preset pressure, and when the hydraulic pressure is less than the second preset pressure, the third electric valve 703 and the fourth electric valve 704 are opened, and when the hydraulic pressure reaches the second preset pressure, the third electric valve 703 and the fourth electric valve 704 are opened. When the pressure is preset, the fourth electric valve 704 is closed.

Specifically, since the control unit in the dual-medium pressure test system includes an air pressure control module and a hydraulic control module, when the workpiece 500 is tested for air pressure, the air pressure in the fifth branch pipeline is detected in real time by the first pressure detection unit 601, Control the on-off of the second electric valve 702; when the tested workpiece 500 is subjected to the hydraulic test, the first pressure detection unit 601 detects the hydraulic pressure in the fifth branch pipeline in real time, and controls the third electric valve 703 and the fourth electric valve 704 on and off. Through the dual-medium pressure test system, the free switching of liquid and gas as the pressing medium can be realized, the integration of the system is improved, the disassembly time and labor cost are reduced, and the work efficiency is improved. At the same time, since the pressure detection unit and the electric valve are arranged to cooperate with the automatic control of the control unit, errors caused by human factors can be reduced.

It can be seen that the dual-medium pressure test system can automatically realize the pneumatic and hydraulic tests of the tested workpiece by equipping a control unit (which can be a computer or a logic controller, etc.), thereby greatly improving the pneumatic and hydraulic testing of the tested workpiece. integration and convenience.

According to one aspect of the present invention, the dual-medium pressure test system further includes: a fifth electric valve 705 arranged on the outlet pipe of the tested workpiece 500; the control unit further includes: an air pressure maintaining module, which is arranged so that the tested workpiece 500 is located at the outlet pipe of the tested workpiece 500; For the time set for the pressure holding under the first preset pressure value, the fifth electric valve 705 is opened to release the pressure until the air pressure of the first pressure detection unit 601 is zero, and the air pressure test process is completed; the hydraulic pressure holding module is set to be When the test workpiece 500 maintains the pressure at the second preset pressure value for the set time, the fifth electric valve 705 is opened to release the pressure until the hydraulic pressure of the first pressure detection unit 601 is zero, and the hydraulic test process is completed.

In the present invention, the control unit further includes an air pressure maintaining module corresponding to the air pressure control module, and for the hydraulic pressure maintaining module corresponding to the hydraulic control module, the workpiece 500 to be tested needs to be under the first preset pressure value and the second preset pressure value The pressure holding time is set according to the test requirements of the workpiece 500 to be tested. After maintaining the pressure for a certain period of time, the control unit opens the fifth electric valve 705 to release the pressure of the workpiece 500 under test, until the air pressure or hydraulic pressure of the first pressure detection unit 601 is zero, then the air pressure test or hydraulic pressure test process ends. The operation cost of the control system of the dual-medium pressure test device is low, the working state can be monitored and controlled in time to be stable, and the maintenance is convenient. The whole process of pressure maintenance and pressure relief is operated by the control system, which can ensure personal safety.

According to an aspect of the present invention, the dual-medium pressure test system further includes: a second pressure detection unit 602 and a first electric valve 701, the second pressure detection unit 602 is arranged outside the pipeline of the first branch, and the first electric valve 701 is arranged Between the external gas source 100 and the gas booster pump 200, and the outlet of the first electric valve 701 is used to communicate with the medium gas inlet of the gas booster pump 200; Three preset pressure values, collect the third pressure value of the second pressure detection unit 602, if the third pressure value is lower than the third preset pressure value, open the first electric valve 701; if the third pressure value reaches the third preset pressure value When the pressure value is set, the first electric valve 701 is closed.

Wherein, the inflation module in the control unit can compare the third pressure value of the second pressure detection unit 602 with the third preset pressure value, and control the on-off of the first electric valve 701 according to the comparison result, thereby completing the gas storage 300 inflation process. The gas filling module can automatically complete the gas filling process of the gas storage 300, so that the gas storage 300 can always store the gas kept at the third pressure value, and ensure the normal performance of the air pressure or water pressure test of the dual medium pressure test device.

According to an aspect of the present invention, the dual-medium pressure test system further includes: a liquid level detection unit 604 disposed outside the liquid storage portion of the high-pressure water accumulator 400 ; the control unit further includes: a water filling module, provided with a Preset the liquid level value, collect the real-time liquid level value of the liquid level detection unit 604, if the real-time liquid level value is lower than the preset liquid level value, open the water inlet pipe of the high-pressure water accumulator 400; if the real-time liquid level value reaches the preset liquid level value If the liquid level value is reached, the water inlet pipe of the high-pressure water storage device 400 is closed to complete the water filling process of the high-pressure water storage device 400 .

The water filling module in the control unit can compare the real-time liquid level value of the liquid level detection unit 604 with the preset liquid level value, and control the on-off of the water inlet pipe of the high-pressure water accumulator 400 according to the comparison result, thereby completing the high-pressure storage The water filling process of the water device 400 . The water filling module can automatically complete the water filling process of the high pressure water accumulator 400 , so that the high pressure water accumulator 400 can always store the liquid at the preset liquid level, so as to ensure the normal performance of the water pressure test of the dual medium pressure test device.

According to one aspect of the present invention, the control unit further includes: an alarm module, which sets the low-level threshold and the high-level threshold of the high-pressure water accumulator 400, collects the real-time liquid level value of the liquid-level detection unit 604, and if the real-time liquid level value reaches the low-level threshold or the high-level threshold When the threshold is reached, an alarm signal is issued. The alarm module is set in the high-pressure water storage tank 400 to prevent the hydraulic test from being too much or too little. When the real-time liquid level value reaches the low-level threshold or the high-level threshold, an alarm signal will be issued to facilitate the staff to check the high-pressure water storage in time. The liquid level of the device 400.

According to an aspect of the present invention, the dual-medium pressure test system further includes: a third pressure detection unit 603 disposed outside the gas storage part of the high-pressure water storage device 400; the fourth preset pressure value, collect the fourth pressure value of the third pressure detection unit 603, if the fourth pressure value is lower than the fourth preset pressure value, open the third electric valve 703; When the preset pressure value is four, the third electric valve 703 is closed. Specifically, in order to make the hydraulic test process smoother for the setting of the third pressure detection unit 603 and the pressure measurement module, it is necessary to ensure that the air pressure of the gas stored in the high-pressure water accumulator 400 is under the fourth preset pressure value, by controlling the third electric valve 703 ensures the stability of its air pressure.

As shown in FIG. 2 , according to an aspect of the present invention, the dual-medium pressure test device further includes: a first manual valve connected between the external gas source 100 and the gas booster pump 200 , and the outlet of the first manual valve is connected to the gas The driving gas inlet of the booster pump 200; the second manual valve, connected between the gas booster pump 200 and the gas storage 300; the third manual valve and the first pressure reducing valve 801, arranged on the first branch; the fourth The manual valve is arranged on the outer side of the first subsection; the fifth manual valve is arranged at the water inlet of the high-pressure water storage device 400 . The above manual valves are arranged to facilitate manual adjustment of gas transmission and liquid transmission, and to ensure that the circulation of dual media can be manually adjusted during the dual-medium pressure test.

According to an aspect of the present invention, the dual-medium pressure test device further includes: a first safety valve, arranged between the gas booster pump 200 and the gas storage 300, and used to communicate with the gas storage 300; a second safety valve, arranged at The second branch; the third safety valve, which is arranged outside the first part of the stored gas of the high-pressure water storage device 400 . The first safety valve, the second safety valve and the third safety valve can protect the pipeline between the gas booster pump 200 and the gas storage 300, the pipeline of the second branch and the normal operation of the high-pressure water storage 100 equipment. When the pressure in the equipment exceeds the pressure value set by the safety valve, the pressure relief is automatically opened to ensure the safety of the entire dual-medium pressure test process, prevent accidents and reduce losses.

To sum up, the control system of the dual-medium pressure test device can realize the free switching of liquid and gas as the pressing medium, which improves the integration of the system, reduces the disassembly time and labor cost, and improves the work efficiency. At the same time, since the pressure detection unit and the electric valve are arranged to cooperate with the automatic control of the control unit, errors caused by human factors can be reduced. Among them, the inflation process, the water filling process, the air pressure test process, the air pressure holding process, the hydraulic test process and the hydraulic pressure holding process can be automatically controlled to ensure personal safety.

On the other hand, the present invention provides a dual-medium pressure test method, the dual-medium pressure test device includes a gas storage 300, a high-pressure water storage 400, a first pressure detection unit 601, a control unit, a second electric valve 702, a third electric valve valve 703 and fourth electric valve 704 . The control method includes: after the gas flows out of the gas storage 300, it first passes through a first branch, and then is divided into a second branch and a third branch, the second branch leads to the tested workpiece 500, and the third branch leads to the high-pressure storage. Water device 400; the liquid flows into the high-pressure water storage device 400 from the water inlet pipe, the water outlet pipe flows out through the fourth branch, the second branch and the fourth branch are combined into a fifth branch to reach the tested workpiece 500; a second electric valve is provided 702 on the second branch, set the third electric valve 703 on the third branch, set the fourth electrical valve 704 on the fourth branch, set the first pressure detection unit 601 on the outside of the pipeline of the fifth branch; compare the first The air pressure detected by the pressure detection unit 601 and the preset first preset pressure, when the air pressure is less than the first preset pressure, open the second electric valve 702, and when the air pressure reaches the first preset pressure, close the second electric valve 702: Compare the hydraulic pressure detected by the first pressure detection unit 601 with a preset second preset pressure, and when the hydraulic pressure is less than the second preset pressure, open the third electric valve 703 and the fourth electric valve 704, and when the hydraulic pressure reaches the first When the second preset pressure is reached, the fourth electric valve 704 is closed.

According to one aspect of the present invention, the dual-medium pressure test device includes a fifth electric valve 705 disposed on the outlet pipe of the workpiece 500 to be tested. The control method further includes: setting the time for the test workpiece 500 to maintain the pressure at the first preset pressure value, opening the fifth electric valve 705 to release the pressure, until the air pressure of the first pressure detection unit 601 is zero, and completing the air pressure test Process: set the time for the tested workpiece 500 to maintain pressure at the second preset pressure value, open the fifth electric valve 705 to release pressure, until the hydraulic pressure of the first pressure detection unit 601 is zero, and complete the hydraulic test process.

According to one aspect of the present invention, the dual-medium pressure test device includes an external gas source 100 , a gas booster pump 200 , a second pressure detection unit 602 and a first electric valve 701 . The control method further includes: arranging the second pressure detection unit 602 on the outside of the pipeline of the first branch, arranging the first electric valve 701 between the external air source 100 and the gas booster pump 200, and the outlet of the first electric valve 701 is used for Connect with the medium gas inlet of the gas booster pump 200; set the third preset pressure value of the gas storage 300, and collect the third pressure value of the second pressure detection unit 602, if the third pressure value is lower than the third preset pressure If the third pressure value reaches the third preset pressure value, the first electric valve 701 is closed.

According to an aspect of the present invention, the dual-medium pressure test device includes a liquid level detection unit 604 disposed outside the liquid storage portion of the high-pressure water reservoir 400 . The control method further includes: setting a preset liquid level value of the high-pressure water accumulator 400, collecting the real-time liquid level value of the liquid level detection unit 604, and turning on the high-pressure water accumulator 400 if the real-time liquid level value is lower than the preset liquid level value If the real-time liquid level value reaches the preset liquid level value, the water inlet pipe of the high-pressure water storage device 400 is closed to complete the water filling process of the high-pressure water storage device 400 .

According to an invention of the present invention, the control method for the dual-medium pressure test device further includes: setting a low-level threshold and a high-level threshold of the high-pressure water storage device 400, and collecting the real-time liquid level value of the liquid level detection unit 604, if the real-time liquid level value reaches the low-level threshold value Or when the threshold is high, an alarm signal is issued.

According to an invention of the present invention, the dual-medium pressure test device includes a third pressure detection unit 603 , which is disposed outside the gas storage portion of the high-pressure water accumulator 400 . The control method further includes: setting a fourth preset pressure value of the high-pressure water storage device 400, collecting a fourth pressure value of the third pressure detection unit 603, and turning on the third pressure value if the fourth pressure value is lower than the fourth preset pressure value Electric valve 703; if the fourth pressure value reaches the fourth preset pressure value, close the third electric valve 703.

It should be noted that the specific implementation of the dual-medium pressure test method of the embodiment of the present invention is similar to the specific implementation of the dual-medium pressure test system of the embodiment of the present invention. For details, please refer to the description of the control system. In order to reduce redundancy, I won't go into details.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. within.

Claims (12)

1. A dual media pressure test system, comprising:

a gas storage (300), a high pressure water reservoir (400), a first pressure detection unit (601), a control unit, a second electric valve (702), a third electric valve (703) and a fourth electric valve (704);

the gas flows out of the gas storage (300), then passes through the first branch and then is divided into a second branch and a third branch, the second branch leads to a workpiece (500) to be tested, and the third branch leads to the high-pressure water storage device (400);

liquid flows into the high-pressure water storage device (400) from a water inlet pipe, and flows out from a water outlet pipe to pass through a fourth branch, and the second branch and the fourth branch are combined into a fifth branch to reach the tested workpiece (500);

the second electrically operated valve (702) is arranged on the second branch, the third electrically operated valve (703) is arranged on the third branch, the fourth electrically operated valve (704) is arranged on the fourth branch, and the first pressure detection unit (601) is arranged outside the pipeline of the fifth branch;

the control unit includes:

an air pressure control module configured to compare an air pressure detected by the first pressure detection unit (601) with a preset first preset pressure, open the second electrically operated valve (702) when the air pressure is smaller than the first preset pressure, and close the second electrically operated valve (702) when the air pressure reaches the first preset pressure;

a hydraulic control module configured to compare the hydraulic pressure detected by the first pressure detection unit (601) with a preset second preset pressure, open the third electric valve (703) and the fourth electric valve (704) when the hydraulic pressure is less than the second preset pressure, and close the fourth electric valve (704) when the hydraulic pressure reaches the second preset pressure.

2. The dual media pressure test system of claim 1, further comprising:

a fifth electric valve (705) arranged on an outlet pipeline of the tested workpiece (500);

the control unit further includes:

the air pressure maintaining module is set to open the fifth electric valve (705) for pressure relief after the tested workpiece (500) reaches a first preset pressure value for a set time, until the air pressure of the first pressure detection unit (601) is zero, and the air pressure test process is completed;

and the hydraulic pressure maintaining module is set to open the fifth electric valve (705) for pressure relief after the tested workpiece (500) reaches a second preset pressure value for pressure maintaining set time until the hydraulic pressure of the first pressure detection unit (601) is zero, so that the hydraulic pressure test process is completed.

3. The dual media pressure test system of claim 1, further comprising:

the gas booster pump comprises an external gas source (100), a gas booster pump (200), a second pressure detection unit (602) and a first electric valve (701), wherein the second pressure detection unit (602) is arranged on the outer side of a pipeline of the first branch, the first electric valve (701) is arranged between the external gas source (100) and the gas booster pump (200), and the outlet of the first electric valve (701) is used for being communicated with a medium gas inlet of the gas booster pump (200);

the control unit further includes:

the inflation module is used for setting a third preset pressure value of the gas storage (300), acquiring a third pressure value of the second pressure detection unit (602), and if the third pressure value is lower than the third preset pressure value, opening the first electric valve (701); and if the third pressure value reaches a third preset pressure value, closing the first electric valve (701).

4. The dual media pressure test system of claim 1, further comprising:

a liquid level detection unit (604) disposed outside a liquid storage portion of the high pressure water reservoir (400);

the control unit further includes:

the water filling module is used for setting a preset liquid level value of the high-pressure water storage device (400), acquiring a real-time liquid level value of the liquid level detection unit (604), and starting a water inlet pipe of the high-pressure water storage device (400) if the real-time liquid level value is lower than the preset liquid level value; and if the real-time level value reaches the preset level value, closing the water inlet pipe of the high-pressure water storage device (400) to finish the water filling process of the high-pressure water storage device (400).

5. The dual media pressure test system of claim 4, wherein the control unit further comprises:

and the alarm module is used for setting a low-level threshold value and a high-level threshold value of the high-pressure water storage device (400), acquiring a real-time level value of the liquid level detection unit (604), and sending an alarm signal if the real-time level value reaches the low-level threshold value or the high-level threshold value.

6. The dual media pressure test system of claim 4, further comprising:

a third pressure detecting unit (603) disposed outside a gas storing portion of the high pressure reservoir (400);

the control unit further includes:

the pressure measuring module is used for setting a fourth preset pressure value of the high-pressure water storage device (400), acquiring a fourth pressure value of the third pressure detection unit (603), and if the fourth pressure value is lower than the fourth preset pressure value, opening the third electric valve (703); and if the fourth pressure value reaches a fourth preset pressure value, closing the third electric valve (703).

7. A dual medium pressure test method, wherein the dual medium pressure test device comprises a gas storage (300), a high pressure water reservoir (400), a first pressure detection unit (601), a control unit, a second electric valve (702), a third electric valve (703) and a fourth electric valve (704), characterized in that the test method comprises:

the gas flows out of the gas storage (300), then passes through the first branch and then is divided into a second branch and a third branch, the second branch leads to a workpiece (500) to be tested, and the third branch leads to the high-pressure water storage device (400);

liquid flows into the high-pressure water storage device (400) from a water inlet pipe, and flows out from a water outlet pipe to pass through a fourth branch, and the second branch and the fourth branch are combined into a fifth branch to reach the tested workpiece (500);

-providing the second electrically operated valve (702) in the second branch, -providing the third electrically operated valve (703) in the third branch, -providing the fourth electrically operated valve (704) in the fourth branch, -providing the first pressure detection means (601) outside the duct of the fifth branch;

comparing the air pressure detected by the first pressure detection unit (601) with a preset first preset pressure, opening the second electric valve (702) when the air pressure is smaller than the first preset pressure, and closing the second electric valve (702) when the air pressure reaches the first preset pressure;

comparing the hydraulic pressure detected by the first pressure detection unit (601) with a preset second preset pressure, opening the third electric valve (703) and the fourth electric valve (704) when the hydraulic pressure is less than the second preset pressure, and closing the fourth electric valve (704) when the hydraulic pressure reaches the second preset pressure.

8. The dual media pressure test method of claim 7, the dual media pressure test apparatus comprising a fifth electrically operated valve (705) disposed on an outlet conduit of the workpiece (500) under test, wherein the control method further comprises:

after the tested workpiece (500) is maintained for a set time under the condition that the pressure reaches a first preset pressure value, the fifth electric valve (705) is opened to release the pressure until the air pressure of the first pressure detection unit (601) is zero, and the air pressure test process is completed;

and after the tested workpiece (500) is maintained for a set time under the condition of reaching a second preset pressure value, opening the fifth electric valve (705) for pressure relief until the hydraulic pressure of the first pressure detection unit (601) is zero, and finishing the hydraulic pressure test process.

9. The dual media pressure test method of claim 7, wherein the dual media pressure test apparatus comprises an external gas source (100), a gas booster pump (200), a second pressure detection unit (602) and a first electric valve (701), and the control method further comprises:

arranging the second pressure detection unit (602) outside the pipeline of the first branch, arranging the first electric valve (701) between the external gas source (100) and the gas booster pump (200), and enabling an outlet of the first electric valve (701) to be communicated with a medium gas inlet of the gas booster pump (200);

setting a third preset pressure value of the gas storage (300), collecting the third pressure value of the second pressure detection unit (602), and if the third pressure value is lower than the third preset pressure value, opening the first electric valve (701); and if the third pressure value reaches a third preset pressure value, closing the first electric valve (701).

10. The dual medium pressure test method as set forth in claim 7, said dual medium pressure test device comprising a liquid level sensing unit (604) disposed outside a liquid storing portion of said high pressure water reservoir (400), wherein said control method further comprises:

setting a preset level value of the high-pressure water storage device (400), acquiring a real-time level value of the liquid level detection unit (604), and opening a water inlet pipe of the high-pressure water storage device (400) if the real-time level value is lower than the preset level value; and if the real-time level value reaches the preset level value, closing the water inlet pipe of the high-pressure water storage device (400) to finish the water filling process of the high-pressure water storage device (400).

11. The dual media pressure test method of claim 10, further comprising:

setting a low level threshold value and a high level threshold value of the high pressure water storage device (400), acquiring a real-time level value of the liquid level detection unit (604), and sending an alarm signal if the real-time level value reaches the low level threshold value or the high level threshold value.

12. The double medium pressure test method as claimed in claim 10, the double medium pressure test apparatus comprising a third pressure detecting unit (603) provided outside a gas storing part of the high pressure reservoir (400), wherein the control method further comprises:

setting a fourth preset pressure value of the high-pressure water reservoir (400), acquiring a fourth pressure value of the third pressure detection unit (603), and if the fourth pressure value is lower than the fourth preset pressure value, opening the third electric valve (703); and if the fourth pressure value reaches a fourth preset pressure value, closing the third electric valve (703).

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