KR20110008818A - Diaphragm endurance testing machine for hydrogen compressor - Google Patents

Abstract

PURPOSE: A device for testing the durability of a diaphragm for a compressor is provided to enable a compressor to stably operate through effective maintenance since the replacing cycle of the diaphragm can be recognized in advance through a durability test. CONSTITUTION: A device for testing the durability of a diaphragm for a compressor comprises a chamber(20), a hydraulic section(60), a pneumatic section(80), a controller(100) and a data processing unit(110). The chamber comprises top and bottom plates(22, 23), which form a cavity(21). The chamber disconnects the top and bottom plates. The chamber enables the replacing of the diaphragm, which is compressed in the cavity between the top and bottom plates. The hydraulic section is connected to the bottom plate. The pneumatic section is connected to the top plate. The controller enables hydraulic fluid and gas alternately to enter/exit the cavity. The data processing unit comprises a program to receive and to process required information from a sensor on a designated one of the chamber, the hydraulic section and the pneumatic section and processes a signal, which is input from the sensor.

Description

Diaphragm durability tester for compressors {DIAPHRAGM ENDURANCE TESTING MACHINE FOR HYDROGEN COMPRESSOR}

The present invention relates to a diaphragm durability experiment apparatus for a compressor, and more specifically, to the design and manufacture of a diaphragm-type compressor mainly using a metal diaphragm of the diaphragm (metal diaphragm) according to various conditions The present invention relates to a diaphragm durability test apparatus for a compressor for testing physical properties such as deformation characteristics and durability.

In general, the diaphragm compressor is a device that compresses the gas when the diaphragm rises or falls when the gas introduced into the compressor reaches a certain volume. This diaphragm compressor can produce a stable gas because the airtightness is static, and can supply 100% oil-free compressed air because the gas is separated and operated, and in the case of a hydraulic type using a metal plate as a diaphragm, Due to its advantages, it is widely used in various fields such as chemical, petrochemical and applied chemistry.

Proposed technologies related to such diaphragm compressors include Republic of Korea Patent Publication No. 10-0506601, "Diaphragm Compressor", Publication No. 10-2007-0037104 "Compressor Valve Device" and Registered Patent Publication No. 10-0844596, "Diaphragm Compressor", and the like.

On the other hand, metal diaphragms in diaphragm compressors are one of the key components of the compressor. At this time, since the metal diaphragm reciprocates at a high speed in a high temperature and high pressure chamber, there is a high risk of breakage, and damage of the compressor and a large maintenance time are required in case of breakage.

However, until now, such a design of the metal diaphragm has been followed by the design conditions of the existing compressor or by the designer's experience, so the life expectancy according to the operating environment of the metal diaphragm could not be predicted. That is, it is necessary to measure the deformation form and the life of the diaphragm according to the conditions of use, the material of the diaphragm, the design value of the cavity, etc. in the development of a new diaphragm compressor, but such a technique is not provided.

Therefore, the present invention has been proposed in recognition of such problems up to now, so that it is possible to determine the operating environment and deformation characteristics of the metal diaphragm and to measure the life thereof. Diaphragm durability test for a new type of compressor that increases the lifespan and operating efficiency of the diaphragm compressor through the optimal design, and enables the operation of the compressor to be stable through the maintenance and maintenance of the diaphragm replacement cycle in advance. It is an object to provide a device.

According to a feature of the present invention for achieving the above object, the present invention includes upper and lower plates 22 and 23 forming a cavity 21, and the upper and lower plates 22 and 23 are separated to form the upper and lower plates ( 22 and 23, the chamber 20 to enable the exchange of the diaphragm 40 is compressed in the cavity 21 in the vertical direction; The diaphragm 40 in the cavity 21 is compressed upward by being connected to the lower plate 23 so that the hydraulic oil is compressed into the cavity 21 through the lower plate 23. Hydraulic unit 60 for; The diaphragm 40 in the cavity 21 is compressed downward by being connected to the upper plate 22 to allow the compressed gas to flow into the cavity 21 through the upper plate 22. Pneumatic part 80 for; A control unit (100) for controlling the hydraulic unit (60) and the pneumatic unit (80) to control the oil and gas to be alternately introduced into the cavity (21); A program for receiving and processing necessary information from a sensor installed in a designated portion of the chamber 20, the hydraulic part 60 and the pneumatic part 80 is mounted, and the data for data processing the signal input from the sensor It includes a processor 110.

In the diaphragm durability experiment apparatus for a compressor according to the present invention as described above, the sensor is provided with a strain gauge (50, strain gauge) attached to the upper surface 42 of the diaphragm 40, the data processing unit 110 When the diaphragm 40 is compressed in the vertical direction by receiving the signal of the strain gauge 50, the deformation characteristic of the diaphragm 40 may be processed.

In the diaphragm durability test apparatus for a compressor according to the present invention, the upper plate 22 of the chamber 20 has a position where the strain gauge 50 is installed on the inner surface 27 forming the cavity 21. The outer side of the upper plate 22 from the sensor groove 28 has a sensor groove 28 formed to correspond, and the wire 52 extending from the strain gauge 50 to the data processing unit 110 is inserted. It may have a wiring groove 29 is formed to extend.

In the diaphragm durability test apparatus for a compressor according to the present invention, the pneumatic part 80 is a gas tank 82 in which compressed gas is accommodated, and gas is supplied from the gas tank 82 to the upper plate 22. The first and second regulators 84 and 86 sequentially installed on the gas supply line 83 connected to flow, and the gas discharged from the upper plate 22 are supplied to the first and second regulators. A gas discharge line 87 connected between the 84 and 86 to flow to the gas supply line 83, and a gas is installed on the gas discharge line 87 to allow gas to flow in the direction of the gas supply line 82. It may be provided with a check valve 88 to limit.

According to the compressor diaphragm durability test apparatus according to the present invention, while changing the diaphragm in the chamber configured to replace the diaphragm while changing the operating environment of the diaphragm through the control of the pneumatic part and the hydraulic part Since the deformation characteristics of the diaphragm can be grasped, it is possible to increase the lifespan and operating efficiency of the diaphragm compressor through the optimum design according to the change of the diaphragm material and the structure of the cavity. In addition, since the diaphragm replacement cycle can be known in advance through the durability test, the compressor can be stably operated through effective maintenance.

1 is a view for explaining the diaphragm durability experiment apparatus for a compressor according to the technical idea of the present invention.

Referring to FIG. 1, the diaphragm durability test apparatus 10 for a compressor according to the present invention applies a diaphragm by applying various conditions in the design and manufacture of a diaphragm compressor using a metal diaphragm. ) Can be tested for durability.

The compressor diaphragm durability test apparatus 10 includes a chamber 20, a hydraulic part 60, a pneumatic part 80, a control part 100, and a data processing part 110.

At this time, the chamber 20 includes upper and lower plates 22 and 23 forming the cavity 21, and separates the upper and lower plates 22 and 23 in the cavity 21 between the upper and lower plates 22 and 23. It is possible to replace the diaphragm 40 is compressed in the vertical direction. The chamber 20 separates the upper and lower plates 22 and 23, so that the diaphragm 40 can be replaced. The upper and lower plates 22 and 23 are joined to each other to form a cavity 21 compressed in the vertical direction of the diaphragm 40, and the upper plate 22 is connected to the pneumatic part 80 so as to allow gas to enter and exit. In addition, the lower plate 24 is connected to the hydraulic unit 60 is configured to be able to enter and exit the hydraulic oil, this configuration can be set according to the conditions that the designer wants to experiment. Of course, the configuration in which the diaphragm 40 is positioned between the upper and lower plates 22 and 23, and the hydraulic oil and gas are sealed to be secured through the application of bolt fastening structures, O-rings and gaskets widely used in this field, and the like. Since it is easily applicable, a detailed description thereof will be omitted.

The hydraulic part 60 is connected to the lower plate 23 so that the hydraulic oil is compressed into the cavity 21 through the lower plate 23 so that the diaphragm 40 in the cavity 21 is compressed upward. do. Such a hydraulic unit 60 may be easily configured by applying a motor 62, a cam unit 64 and a piston 66 applied for supply of hydraulic oil in a general compressor. In the present invention, the pneumatic part 80 is connected to the upper plate 22 so that the compressed gas flows into the cavity 21 through the upper plate 22, so that the diaphragm 40 in the cavity 21 moves downward. To be compressed. The pneumatic part 80 applied to the present invention uses a compressed gas stored in the gas tank 82. The gas tank 82 may be connected to the upper plate 22 through the gas supply line 83, and the first regulator 84 may be installed on the gas supply line 83 to adjust the gas pressure. The hydraulic unit 60 and the pneumatic unit 80 is applied to the supply and discharge line for supplying and discharging the hydraulic oil and gas that is usually applied in the pneumatic equipment, various valves for controlling the flow of the hydraulic oil and gas It can be applied.

The controller 100 controls the hydraulic unit 60 and the pneumatic unit 80 to control the hydraulic oil and the gas to alternately enter and exit the cavity 21. Such a control unit 100 may be applied to various methods such as a computer, a PLC control generally applied in the automation field. In addition, the control unit 100 will be configured to be connected to various sensors, automatic control valves for the control of hydraulic oil and gas, such as a technique that is variously presented and applied in this field.

The data processing unit 110 is equipped with a program for receiving and processing necessary information from a sensor installed in a designated portion of the chamber 20, the hydraulic unit 60 and the pneumatic unit 80, the data input signal from the sensor Process. Such a data processing unit 110 can be configured by applying a normal computer. The data processor 110 receives a signal from various types of sensors installed in the diaphragm 40, the gas supply and discharge lines, the hydraulic oil supply and discharge lines, the chamber 20 into which the hydraulic oil and the gas flow, and the like. These are formed into desired data through a program executed in advance. For example, in the preferred embodiment of the present invention, the hydraulic oil and gas pressure change (see FIG. 10), the strain change according to the pressure change (see FIG. 11), and gas injection through the diaphragm durability test apparatus for the compressor according to the present invention. In this case, it can be confirmed that data on strain change amount (see FIG. 12) per diaphragm 40 point and strain change amount (see FIG. 13) for diaphragm 40 point during gas injection are obtained.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 2 to 13, and like reference numerals designate like elements in FIGS. 1 to 13. On the other hand, in each figure, with respect to the general diaphragm-type compressor associated with the diaphragm durability test apparatus for the compressor according to the present invention shown in the drawings and detailed description of the configuration and operation and effects thereof can be easily understood from the related art in this field. Are shown briefly or omitted and centered on the relevant parts of the invention.

Figure 2 is a photographic view of the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention, Figure 3 is a photograph showing an enlarged portion of the chamber installed in Figure 2, Figure 4 is a preferred embodiment of the present invention In the diaphragm durability experiment apparatus for a compressor according to the photograph showing the upper plate 22 of the chamber in the inner direction, Figure 5 is a diaphragm durability experiment apparatus for compressor according to a preferred embodiment of the present invention on the upper surface of the diaphragm Figure 6 is a view for explaining the form attached to the strain gauge, Figure 6 is a diagram for explaining the relationship between the chamber, hydraulic unit, pneumatic unit, control unit and data processing unit in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention Figure 7 is a diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention 8 is a view for explaining the relationship between the hydraulic unit, the strain gauge and the data processing unit, and FIG. 8 is a view for explaining the gas supply relationship between the chamber and the pneumatic unit in the diaphragm durability test apparatus for the compressor according to the preferred embodiment of the present invention.

2 and 6, the diaphragm durability test apparatus 10 for a compressor according to a preferred embodiment of the present invention includes a chamber 20, a hydraulic part 60, a pneumatic part 80, and a control part 100. And a data processing unit 110. Here, the chamber 20, the hydraulic part 60, and the pneumatic part 80 are provided on the frame 12 which consists of a unitary body.

1 and 2, with reference to FIGS. 3 and 6, the chamber 20 is disposed between the upper and lower plates 22 and 23 forming the cavity 21 and the upper and lower plates 22 and 23. It has a diaphragm 40 which is coupled to and compressed up and down in the cavity 21. The chamber 20 separates the upper and lower plates 22 and 23, so that the diaphragm 40 can be replaced. At this time, the diaphragm durability test apparatus 10 for the compressor according to the present embodiment is a form in which the auxiliary chamber 20 'is installed to allow the diaphragm 40' (see FIG. 7) having a relatively small size to be tested. Is showing. Of course, such an auxiliary chamber (20 ') has the same configuration as the chamber 20 is configured according to the present invention, a detailed description thereof will be omitted.

3, 6 and 8, the upper cover plate 24 is installed on the upper plate 22 of the chamber 20. The upper cover plate 24 is provided with a suction check valve 32 and a discharge check valve 34 to which the gas supply line 83 and the gas discharge line 87 of the pneumatic part 80 are connected, and the temperature of the gas. A temperature sensor (not shown) for measuring the pressure is installed, and a hole for inserting a pressure sensor (not shown) capable of measuring the gas pressure in the cavity 21 into the upper plate 22 is formed. In addition, a lower cover plate 25 corresponding to the upper cover plate 24 is installed below the lower plate 23, and the lower side of the lower cover plate 24 receives hydraulic oil from the hydraulic unit 60 and the cavity. The manifold block 26 which forms the hydraulic path which flows into the 21 is provided. The manifold block 26 is provided with a temperature sensor 54, a pressure sensor 56, and the like.

In the diaphragm durability test apparatus 10 for a compressor according to the present embodiment, a strain gauge 50 is attached to an upper surface 42 of the diaphragm 40, and the signal of the strain gauge 50 is a data processor. It is transmitted to the 110 so as to handle the deformation characteristics of the diaphragm 40 when the diaphragm 40 is compressed in the vertical direction. In particular, the diaphragm durability test apparatus 10 for a compressor according to the present embodiment is specifically designed to prevent damage to the strain gauge 50 and to stably obtain the compression of the diaphragm 40, the upper plate 22 ), So that the deformation characteristics of the diaphragm 40 can be confirmed. That is, as shown in Figure 4, in the present embodiment, the upper plate 22 can be attached to the cavity (strain gauge 50) to measure the strain of the diaphragm 40 during compression of the diaphragm 40 ( The sensor groove 28 is formed on the inner surface 27 forming the 21 to correspond to the position where the strain gauge 50 is installed. The wiring groove 29 is formed by extending from the sensor groove 28 to the outside of the upper plate 22 so that the wiring 52 extending from the strain gauge 50 to the data processor 110 is inserted.

By such a sensor groove 28 and a wiring groove 29, as shown in FIG. 5, the strain gauge 50 attached to the upper surface 42 of the diaphragm 40, and the wiring extending therefrom. 52 prevents the strain gauge 50 from breaking even when the diaphragm 40 is compressed, and provides stable compression of the diaphragm 40.

Meanwhile, as shown in FIGS. 2 and 6, in the diaphragm durability test apparatus 10 for a compressor according to the present embodiment, the hydraulic part 60 is connected to the lower plate 23 and the cavity through the lower plate 23. By allowing hydraulic oil to be compressed and introduced into 21, the diaphragm 40 in the cavity 21 is compressed upward. Such a hydraulic unit 60 is configured by applying a motor 62, a cam unit 64 and a piston 66 that is applied for the supply of hydraulic oil in a general compressor. In this embodiment, in order to measure the camshaft angle of the cam unit 64, a rotary encoder 69 (360 samples / rev) is provided on the camshaft. This encoder 69 is used to counter the number of times the diaphragm 40 is compressed in the vertical direction and to sense the rotational speed of the motor.

When the hydraulic unit 60 receives power from the control unit 100 and the motor 62 (15 horsepower in this embodiment) is driven, the driving force of the motor 62 is the pulley 65 installed in the cam unit 64. ), The piston 66 is reciprocated by the rotation of the cam (not shown) of the cam unit 64 to compress the hydraulic oil into the cavity 21 of the chamber 20, the pressure of the hydraulic oil As the diaphragm 40 in 21 is in close contact with the upper plate 22, the gas sucked through the suction check valve 32 on the upper side of the cavity 21 is compressed. In this embodiment, the hydraulic oil used in the hydraulic unit 60 used AW-32 which is used in actual compressor operation.

3 and 8, in this embodiment, the pneumatic part 80 is connected to the upper plate 22 so that the compressed gas is introduced into the cavity 21 through the upper plate 22. The diaphragm 40 in the cavity 21 is compressed downward. The pneumatic part 80 applied to this embodiment uses the compressed gas stored in the gas tank 82. The gas tank 82 is connected to the upper plate 22 through the gas supply line 83, and the first regulator 84 is installed on the gas supply line 83 to adjust the gas pressure. In particular, in the present embodiment, the pneumatic part 80 is on a gas tank 82 in which the compressed gas is accommodated, and on the gas supply line 83 connected to flow the gas from the gas tank 82 to the upper plate 22. Gas discharged from the first and second regulators 84 and 86 and the upper plate 22 sequentially installed to the gas supply line 83 between the first and second regulators 84 and 86. And a check valve 88 installed on the gas discharge line 87 to restrict the gas to flow in the direction of the gas supply line 82. At this time, the second regulator 86 'is installed on the gas supply line 83' in the auxiliary chamber 20 'installed according to the present embodiment.

Through the pneumatic part 80 having such a configuration, the compressor diaphragm durability test apparatus 10 according to the present embodiment has an effect of reusing gas. That is, as described above, when the pressure of the gas compressed in the cavity 21 becomes higher than the set pressure of the discharge check valve 34 by the operation of the hydraulic unit 60, the gas in the cavity 21 is a gas discharge line Discharged through 87 and recycled back to gas supply line 83 to allow the device to run without consuming gas. In the present embodiment, the gas used in the pneumatic part 80 used compressed nitrogen instead of hydrogen used in the hydrogen compressor because of the risk of handling and explosion.

In this embodiment, the gas from the gas tank 82 is supplied to the chamber 80 and the auxiliary chamber 80 'at 6 bar and 14 bar, respectively, via the first regulator 84. The supplied gas is compressed and discharged in the chamber 80 and the auxiliary chamber 80 ', and the discharged gas passes through the check valve 88 and returns to the gas supply lines 83 and 83' to circulate. . Therefore, the diaphragm durability test apparatus 10 for a compressor according to the present embodiment can test the durability of the diaphragm without gas consumption.

2 and 6, the control unit 100 controls the hydraulic unit 60 and the pneumatic unit 80 to control the hydraulic oil and gas to alternately enter and exit the cavity 21. The control unit 100 is manufactured in the form of a control box by applying the PLC control. The power of the hydraulic unit 60, the pneumatic unit 80, and various sensors are supplied through the control unit 100. In addition, the control unit 100 is provided with indicators for indicating the hydraulic pressure and gas pressure of the hydraulic unit 60 and the pneumatic unit 80, the temperature, the speed (rpm) of the motor, the operating time and the number of rotations of the motor.

As shown in FIGS. 2, 6, and 7, the data processing unit 110 receives and processes necessary information from a sensor installed in a designated portion of the chamber 20, the hydraulic unit 60, and the pneumatic unit 80. A program is mounted to perform data processing on a signal input from a sensor. In the present embodiment, the data processing unit 110 includes a notebook computer 112 and a data logger 114. The data processing unit 110 includes a gas temperature sensor and a gas pressure sensor installed in the chamber 20, a temperature sensor 54 measuring a temperature of hydraulic pressure, a pressure sensor 56 measuring a hydraulic pressure, and a diaphragm 40. The signal from the strain gauge 50 and the encoder 69 installed in the data logger 114 is processed, and it is received by the notebook computer 112 to process the required data. That is, the data logger 114 acquires the pressure, temperature, and strain signals synchronized with the encoder signal by using the "A" signal among the encoder 69 signals as the external sample signal and the "Z" signal as the start signal. The input signal is transmitted to the notebook computer 112 with the noise removed through the hardware filter.

9 is an image diagram showing an example of a screen of the data processing unit in the diaphragm durability experimental apparatus for a compressor according to a preferred embodiment of the present invention.

9, the notebook computer 112 of the data processor 110 controls the data logger 114 in the diaphragm durability test apparatus 10 for a compressor according to the present embodiment. Therefore, the notebook computer 112 is provided with a program that allows the user to configure the contents according to the experimental conditions, such as graphs and condition inputs required for the durability test of the diaphragm. The screen shown in FIG. 9 consists of a graph and a condition input column for displaying the measured strain, pressure, and temperature in real time.

10 is a graph showing an example of the pressure change of the hydraulic oil and gas obtained in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention.

As shown in FIG. 10, the diaphragm durability test apparatus 10 for a compressor according to the present embodiment may know hydraulic oil and gas pressure changes. That is, as shown in the graph, as the motor speed Rpm increases, the magnitude of the oil and gas pressure change decreases, and the time at which the pressure is maximized is gradually delayed.

11 is a graph showing an example of the amount of strain change according to the pressure change obtained in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention.

Referring to Figure 11, the diaphragm durability test apparatus 10 for a compressor according to the present embodiment can know the strain change according to the pressure change. That is, as shown in the graph, when the gas is injected, the strain is also changed according to the pressure change of the hydraulic oil, it can be seen that the change of the strain appears later than the change of the hydraulic oil. As a result, when the pressure in the cavity 21 is maximized, the discharge check valve 34 may be viewed immediately before opening. In this case, since the gas remains in the compressed state in the cavity 21, the diaphragm 40 is deformed at maximum. After the gas is discharged through the discharge check valve 34, the diaphragm 40 may reach the upper end of the cavity 21.

12 is a graph showing an example of strain variation for each point of the diaphragm without injecting gas obtained in a diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention.

As described above, FIG. 12 is a graph showing the sum of absolute maximum and minimum strain values according to the rotational speed of the motor at each point in the radial direction when no gas is injected, and shows the magnitude of the strain change at each point. This shows that 15 points are the largest in the center, and 11 and 4 points are the largest. In addition, the strain rate decreases as the motor speed increases in the center, and the strain rate decreases as the motor speed increases in the 15 points showing the maximum deformation.

FIG. 13 is a graph showing an example of strain variation for each point of a diaphragm in a state in which gas obtained in a diaphragm durability test apparatus for a compressor according to an exemplary embodiment of the present invention is injected.

FIG. 13 is a graph showing the sum of absolute maximum and minimum strain values according to the number of motor revolutions at each point in the radial direction when gas is injected, and shows the magnitude of the strain change at each point. From this, it can be seen that the 15 points are the largest from the center, and the change is the greatest in the order of the 14 and 11 points, and the strain at the 15 points is three times or more than other points. In addition, since the change in the strain rate according to the motor rotation is slightly reduced but not obvious, the deformation of the 15 point is the largest, and therefore, the diaphragm breakage near the 15 point may be expected to occur first.

Thus, the diaphragm durability experiment apparatus for a compressor according to the preferred embodiment of the present invention can grasp the deformation characteristics of the diaphragm while changing the operating environment of the diaphragm through the control of the pneumatic part and the hydraulic part.

As described above, the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention has been shown in accordance with the above description and drawings, but this is only an example and is within the scope not departing from the technical idea of the present invention. It will be appreciated by those skilled in the art that various changes and modifications are possible.

1 is a view for explaining a diaphragm durability experiment apparatus for a compressor according to the technical idea of the present invention;

2 is a photographic view of a diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

3 is a photograph showing an enlarged view of a part where a chamber is installed in FIG. 2;

Figure 4 is a photographic view showing the upper plate 22 of the chamber in the inner direction in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

5 is a view for explaining a form in which a strain gauge is attached to the upper surface of the diaphragm in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

6 is a view for explaining the relationship between the chamber, the hydraulic part, the pneumatic part, the control unit and the data processing unit in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

7 is a view for explaining the relationship between the hydraulic unit and the strain gauge and the data processing unit in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

8 is a view for explaining the gas supply relationship between the chamber and the pneumatic part in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

9 is an image view showing an example of a screen of the data processing unit in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

10 is a graph showing an example of pressure change of hydraulic oil and gas obtained in a diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

11 is a graph showing an example of the amount of strain change according to the pressure change obtained in the diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

12 is a graph showing an example of strain change amount for each point of a diaphragm without injecting gas obtained in a diaphragm durability test apparatus for a compressor according to a preferred embodiment of the present invention;

FIG. 13 is a graph showing an example of strain variation for each point of a diaphragm in a state in which gas obtained in a diaphragm durability test apparatus for a compressor according to an exemplary embodiment of the present invention is injected.

Explanation of symbols on the main parts of the drawings

10: (Compressor Diaphragm Durability) Experiment Device

20: chamber 21: cavity

22: upper plate 23: lower plate

27: (upper plate) inner surface 28: sensor groove

29: wiring groove 40: diaphragm

42: (diaphragm) upper surface 50: strain gauge

52: (strain gauge) wiring 60: hydraulic part

80: pneumatic part 82: gas tank

83: gas supply line 84: the first regulator

86: second regulator 87: gas discharge line

88: check valve 100: control unit

110: data processing unit

Claims (4)

The upper and lower plates 22 and 23 forming the cavity 21 are separated, and the upper and lower plates 22 and 23 are separated, and the upper and lower plates 22 and 23 are compressed in the cavity 21 in the vertical direction between the upper and lower plates 22 and 23. A chamber 20 to enable exchange of the diaphragm 40 to be made; The diaphragm 40 in the cavity 21 is compressed upward by being connected to the lower plate 23 so that the hydraulic oil is compressed into the cavity 21 through the lower plate 23. Hydraulic unit 60 for; The diaphragm 40 in the cavity 21 is compressed downward by being connected to the upper plate 22 so that the compressed gas is introduced into the cavity 21 through the upper plate 22. Pneumatic part for 80 and; A control unit (100) for controlling the hydraulic unit (60) and the pneumatic unit (80) to control the oil and gas to be alternately introduced into the cavity (21); A program for receiving and processing necessary information from a sensor installed in a designated portion of the chamber 20, the hydraulic part 60 and the pneumatic part 80 is mounted, and the data for data processing the signal input from the sensor Compressor diaphragm durability test apparatus comprising a processing unit (110). The method of claim 1, The sensor has a strain gauge 50 attached to the upper surface 42 of the diaphragm 40, and the data processor 110 receives the signal of the strain gauge 50 to receive the diaphragm. Compressor diaphragm durability experimental device, characterized in that for processing the deformation characteristics of the diaphragm 40 when 40 is compressed in the vertical direction. The method of claim 2, The upper plate 22 of the chamber 20 has a sensor groove 28 formed on the inner surface 27 forming the cavity 21 to correspond to the position where the strain gauge 50 is installed, and the strain And a wiring groove 29 extending from the sensor groove 28 to the outside of the upper plate 22 so that the wiring 52 extending from the gauge 50 to the data processing unit 110 is inserted therein. Compressor diaphragm durability test device. 4. The method according to any one of claims 1 to 3, The pneumatic part 80 is a gas tank 82, the compressed gas is received, First and second regulators 84 and 86 installed sequentially on the gas supply line 83 connected to flow gas from the gas tank 82 to the upper plate 22; A gas discharge line 87 connected to allow the gas discharged from the upper plate 22 to flow between the first and second regulators 84 and 86 to the gas supply line 83; Compressor diaphragm durability test apparatus, characterized in that provided on the gas discharge line (87) is provided with a check valve (88) for restricting the gas flow in the direction of the gas supply line (82).

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