Isolation type gas-liquid converter

Abstract

The utility model provides an isolation type gas-liquid converter which comprises a gas-liquid converter body, the gas-liquid converter body comprises a shell, an air pressure cavity, a hydraulic pushing channel and a gas inlet channel, a gas inlet is formed in the top of the side edge of the shell, the gas inlet is communicated with the interior of the gas inlet channel, and a gas outlet is formed in the top of the side edge of the shell. A plurality of air pressure cavities are formed in the shell, the air pressure cavities are separated through partition plates, a pressure dividing assembly is installed in the middle of each partition plate, one end of each air pressure cavity is connected with a conversion channel, and the multiple air pressure cavities and hydraulic pushing channels are formed in the isolation type air-liquid converter. According to the pressure relief valve, the stage type conversion process can be achieved, the higher pressure conversion upper limit is provided, higher conversion precision can be achieved when conversion is conducted with low pressure, the pressure relief channel can be opened through resetting of the pressure bearing plate when gas in the air pressure cavity needs to be released, and the pressure relief efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid conversion, in particular to an isolated gas-liquid converter. Background Art

[0002] The gas-liquid converter is a conversion device that can convert a gas pressure signal into a liquid pressure signal output, which includes an isolated type and a contact type. According to the isolated gas-liquid converter described in the Chinese patent document CN202022643937.4, the disclosed technical solution uses a rubber oil bag as a storage cylinder and diaphragm for the hydraulic oil. The compressed gas enters the cylinder cavity from the air inlet to squeeze the rubber oil bag so that the hydraulic oil is squeezed out from the oil outlet under pressure, thereby achieving the purpose of converting the air pressure signal into a hydraulic signal output. It has a simple structure, reliable operation, and no parts wear, and can be applied to a gas-liquid automatic control system combining pneumatic and hydraulic.

[0003] According to the technical solution disclosed by the manufacturer, the isolated gas-liquid converter in the prior art realizes the conversion process only through a single gas chamber and a liquid chamber. Therefore, the maximum pressure that can be tolerated will be limited by many factors such as the volume of the two chambers, the size and elasticity of the internal diaphragm, etc., resulting in an increase in the cost of the converter that can withstand higher pressures. Moreover, since only a single pressure conversion channel is used, the control accuracy will be reduced. On the other hand, when the internal gas pressure needs to be released after use, the gas will leak out from the air inlet channel, so the pressure relief efficiency is low. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an isolated gas-liquid converter to solve the problems raised in the above-mentioned background technology. The utility model is provided with multiple air pressure cavities and hydraulic push channels, which realizes a staged conversion process, further increases the upper limit of the tolerable pressure, and has a faster speed when releasing pressure.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: an isolated gas-liquid converter, including a gas-liquid converter body, the gas-liquid converter body including an outer shell, an air pressure cavity, a hydraulic push channel and an air intake channel, an air inlet is provided at the top of the side of the outer shell, the air inlet is connected with the interior of the air intake channel, a plurality of air pressure cavities are provided inside the outer shell, and each air pressure cavity is separated by a partition, a pressure dividing assembly is installed in the middle of the partition, one end of each of the air pressure cavities is connected to a conversion channel, and the end of each conversion channel is connected to an independent hydraulic push channel.

[0006] Furthermore, a partition is installed at one end of the interior of the air pressure cavity, an inner convex ring is provided on the inner wall of the conversion channel, a piston rod is inserted in the middle of the inner convex ring, one end of the piston rod is connected to the inner side of the diaphragm, and a piston plate is installed at the other end of the piston rod.

[0007] Furthermore, the piston plate is embedded in the hydraulic push channel, and the side of the piston plate fits the inner wall of the hydraulic push channel. The end of the piston rod inserted into the air pressure cavity is provided with an arc plate structure.

[0008] Furthermore, there are multiple air pressure cavities, and the inner wall of the air pressure cavity at the bottom is connected to the interior of the air intake channel through a connecting pipe. A first spring is provided on the surface of the piston rod, and the two ends of the first spring are fixedly connected to the inner convex ring and the surface of the piston rod respectively.

[0009] Furthermore, a through hole is opened in the middle of the partition, and the pressure dividing assembly is installed inside the through hole. The pressure dividing assembly includes a top plate and a lifting plate, the lifting plate is embedded in the inner side of the through hole, and the bottom of the top plate is fixed to the partition by a rod.

[0010] Furthermore, the diameter of the lifting plate is the same as the diameter of the inner wall of the through hole, and a second spring is installed between the top plate and the lifting plate.

[0011] Furthermore, a pressure plate is provided on one side of the air inlet channel, a sealing column is connected to the rear end of the pressure plate, a closed channel is provided on the inner wall of the air pressure cavity, a pressure relief channel is provided at the end of the closed channel, and a pressure relief port is provided at the top of the pressure relief channel.

[0012] Furthermore, a third spring is connected to the rear end of the pressure plate, the number of the sealing columns and the closed channels are the same, and each sealing column is embedded in the corresponding closed channel.

[0013] Beneficial effects of the utility model:

[0014] The isolated gas-liquid converter is internally provided with a plurality of air pressure cavities and hydraulic push channels. When the pressure of the gas delivered to the bottommost air pressure cavity reaches the upper limit, the pressure dividing component on the top can be automatically triggered to enable the use of the air pressure cavity on the top layer. Thus, a staged conversion process can be realized, thereby providing a higher pressure conversion upper limit, and higher conversion accuracy can be achieved when converting at a lower pressure.

[0015] The isolated gas-liquid converter is in contact with the piston rod through a diaphragm inside each air pressure cavity, so the gas pressure can act on a larger range, and the rigid rod combined with the diaphragm structure can achieve a faster conversion transmission speed, thereby improving the conversion efficiency.

[0016] The isolated gas-liquid converter can block the pressure relief channel by means of a pressure-bearing plate inside the air inlet channel when air pressure is generated, thereby avoiding affecting subsequent pressure transmission. When the gas inside the air pressure cavity needs to be released after use, the pressure relief channel can be opened by resetting the pressure-bearing plate, thereby accelerating the release of gas pressure and improving the efficiency of pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the appearance of an isolated gas-liquid converter of the utility model;

[0018] Figure 2 It is a side sectional view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the voltage dividing component part of the utility model;

[0020] Figure 4 It is a partial cross-sectional view of the pressure relief port of the utility model;

[0021] In the figure: 1. outer shell; 2. air inlet; 3. connecting pipe; 4. conversion channel; 5. hydraulic push channel; 6. air pressure cavity; 7. partition; 8. pressure dividing assembly; 9. diaphragm; 10. piston rod; 11. inner convex ring; 12. first spring; 13. piston plate; 14. air inlet channel; 15. pressure relief port; 16. pressure bearing plate; 17. through hole; 18. top plate; 19. second spring; 20. lifting plate; 21. pressure relief channel; 22. sealing column; 23. third spring; 24. closed channel. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figures 1 to 4The utility model provides a technical solution: an isolated gas-liquid converter, including a gas-liquid converter body, the gas-liquid converter body including a shell 1, a gas pressure cavity 6, a hydraulic push channel 5 and an air inlet channel 14, the top of the side of the shell 1 is provided with an air inlet 2, the air inlet 2 is connected with the inside of the air inlet channel 14, the inside of the shell 1 is provided with a plurality of gas pressure cavities 6, and each gas pressure cavity 6 is separated by a partition 7, a pressure dividing component 8 is installed in the middle of the partition 7, each of the gas pressure cavities 6 One end of the conversion channel 4 is connected to the conversion channel 4, and the end of each conversion channel 4 is connected to an independent hydraulic push channel 5. The isolated gas-liquid converter inputs the gas pressure into the interior of the intake channel 14 through the air inlet 2 on one side, and moves down along the intake channel 14, and finally transports it to the interior of the air pressure cavity 6 with the help of the connecting pipe 3, and drives the piston rod 10 inside the conversion channel 4 in the air pressure cavity 6, and provides thrust to the liquid inside the hydraulic push channel 5 with the help of the piston rod 10 and the piston plate 13, thereby realizing the conversion process of air pressure and hydraulic pressure.

[0024] In this embodiment, a partition plate 7 is installed at one end of the interior of the air pressure cavity 6, an inner convex ring 11 is provided on the inner wall of the conversion channel 4, a piston rod 10 is inserted in the middle of the inner convex ring 11, one end of the piston rod 10 is connected to the inner side of the diaphragm 9, and a piston plate 13 is installed at the other end of the piston rod 10, the piston plate 13 is embedded in the interior of the hydraulic push channel 5, and the side of the piston plate 13 is in contact with the inner wall of the hydraulic push channel 5, and an arc plate structure is provided at one end of the piston rod 10 inserted into the air pressure cavity 6, the air pressure cavity 6 is provided with multiple, and the inner wall of the air pressure cavity 6 at the bottom is connected to the interior of the air intake channel 14 through a connecting pipe 3, and a first spring 12 is provided on the surface of the piston rod 10, and the two ends of the first spring 12 are respectively connected to the inner The convex ring 11 and the piston rod 10 are fixedly connected on the surface, and the inside of each air pressure cavity 6 contacts the piston rod 10 through the diaphragm 9. Therefore, the gas pressure can act on a larger range, and the rigid rod and the diaphragm 9 structure can achieve a faster conversion transmission speed, thereby improving the conversion efficiency. Specifically, when the gas pressure is injected into the air pressure cavity 6, the pressure inside the air pressure cavity 6 will increase, directly acting on one side of the diaphragm 9, and then the pressure will be transmitted to the piston rod 10 with the help of the diaphragm 9. The movement of the piston rod 10 drives the piston plate 13 at the other end to move, thereby realizing the pushing process of the liquid inside the hydraulic push channel 5 at the other end. After the conversion is completed, the piston rod 10 will be reset by the internal first spring 12, thereby driving the diaphragm 9 to reset to the initial position.

[0025] In this embodiment, a through hole 17 is opened in the middle of the partition 7, and the pressure dividing assembly 8 is installed inside the through hole 17. The pressure dividing assembly 8 includes a top plate 18 and a lifting plate 20. The lifting plate 20 is embedded in the inner side of the through hole 17. The bottom of the top plate 18 is fixed to the partition 7 by a rod. The diameter of the lifting plate 20 is the same as the inner wall diameter of the through hole 17. A second spring 19 is installed between the top plate 18 and the lifting plate 20. A plurality of air pressure cavities 6 and hydraulic push channels 5 are arranged inside. When the gas pressure delivered to the bottom air pressure cavity 6 reaches the upper limit, the top pressure dividing assembly 8 can be automatically triggered to enable the top air pressure cavity 6 to be used, thereby realizing a staged conversion process. process, thereby providing a higher upper limit of pressure conversion, and can have higher conversion accuracy when converting at a lower pressure. Specifically, since the connecting pipe 3 is only connected to the bottommost air pressure cavity 6, when the pressure of the bottommost air pressure cavity 6 reaches the maximum, the piston rod 10 moves to the farthest end, and the pressure inside the air pressure cavity 6 also reaches the upper limit. Therefore, the pressure dividing assembly 8 between the bottommost air pressure cavity 6 and the middle-layer air pressure cavity 6 is subjected to pressure, causing the lifting plate 20 to move upward until it moves out of the top of the partition 7. Therefore, the internal pressure of the bottommost air pressure cavity 6 enters the middle-layer air pressure cavity 6 along the opened through hole 17. At this time, the middle-layer air pressure cavity 6 can provide an additional pressure upper limit.

[0026] In this embodiment, a pressure-bearing plate 16 is provided on one side of the air inlet channel 14, and a sealing column 22 is connected to the rear end of the pressure-bearing plate 16. A closed channel 24 is provided on the inner wall of the air pressure cavity 6, and a pressure relief channel 21 is provided at the end of the closed channel 24. A pressure relief port 15 is provided at the top of the pressure relief channel 21. A third spring 23 is connected to the rear end of the pressure-bearing plate 16. The number of sealing columns 22 and the number of closed channels 24 are the same, and each sealing column 22 is embedded in the corresponding closed channel 24. The pressure relief channel 21 can be blocked by the pressure-bearing plate 16 when air pressure is generated inside the air inlet channel 14, thereby avoiding affecting the subsequent pressure transmission. After use, the pressure relief channel 21 inside the air pressure cavity 6 needs to be When the gas leaks, the pressure relief channel 21 can be opened by resetting the pressure plate 16, thereby accelerating the release of gas pressure and improving the efficiency of pressure relief. Specifically, when gas pressure is generated, it will directly act on the pressure plate 16, and each closed channel 24 will be blocked by the sealing column 22. At this time, the air pressure inside each air pressure cavity 6 cannot be discharged from the closed channel 24 and the pressure relief channel 21. After the conversion is completed, no additional air pressure is generated inside the air intake channel 14. The pressure plate 16 can be translated under the synchronous action of the internal pressure of the air pressure cavity 6 and the third spring 23, and the sealing column 22 releases the obstruction to the pressure relief channel 21 and the closed channel 24. At this time, the pressure inside each air pressure cavity 6 can be discharged from the closed channel 24.

[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An isolated gas-liquid converter, comprising a gas-liquid converter body, characterized in that: The gas-liquid converter body comprises a shell (1), a pneumatic cavity (6), a hydraulic push channel (5) and an air inlet channel (14); an air inlet (2) is arranged at the top of the side of the shell (1); the air inlet (2) is connected to the inside of the air inlet channel (14); a plurality of pneumatic cavities (6) are arranged inside the shell (1); each of the pneumatic cavities (6) is separated by a partition (7); a pressure dividing assembly (8) is installed in the middle of the partition (7); one end of each of the pneumatic cavities (6) is connected to a conversion channel (4), and the end of each conversion channel (4) is connected to an independent hydraulic push channel (5).

2. The isolated gas-liquid converter according to claim 1, characterized in that: A partition plate (7) is installed at one end of the interior of the air pressure cavity (6), an inner convex ring (11) is provided on the inner wall of the conversion channel (4), a piston rod (10) is inserted in the middle of the inner convex ring (11), one end of the piston rod (10) is connected to the inner side of the diaphragm (9), and a piston plate (13) is installed at the other end of the piston rod (10).

3. The isolated gas-liquid converter according to claim 2, characterized in that: The piston plate (13) is embedded in the hydraulic push channel (5), and the side of the piston plate (13) is in contact with the inner wall of the hydraulic push channel (5). The end of the piston rod (10) inserted into the air pressure cavity (6) is provided with an arc plate structure.

4. The isolated gas-liquid converter according to claim 3, characterized in that: A plurality of air pressure cavities (6) are provided, and the inner wall of the air pressure cavity (6) at the bottom is connected to the interior of the air intake passage (14) via a connecting pipe (3). A first spring (12) is provided on the surface of the piston rod (10), and the two ends of the first spring (12) are fixedly connected to the inner convex ring (11) and the surface of the piston rod (10), respectively.

5. The isolated gas-liquid converter according to claim 2, characterized in that: A through hole (17) is provided in the middle of the partition (7), and the pressure dividing assembly (8) is installed inside the through hole (17). The pressure dividing assembly (8) comprises a top plate (18) and a lifting plate (20), and the lifting plate (20) is embedded inside the through hole (17). The bottom of the top plate (18) is fixed to the partition (7) via a rod.

6. The isolated gas-liquid converter according to claim 5, characterized in that: The diameter of the lifting plate (20) is the same as the diameter of the inner wall of the through hole (17), and a second spring (19) is installed between the top plate (18) and the lifting plate (20).

7. The isolated gas-liquid converter according to claim 2, characterized in that: A pressure plate (16) is provided on one side of the air inlet channel (14), a sealing column (22) is connected to the rear end of the pressure plate (16), a closed channel (24) is provided on the inner wall of the air pressure cavity (6), a pressure relief channel (21) is provided at the end of the closed channel (24), and a pressure relief port (15) is provided at the top of the pressure relief channel (21).

8. The isolated gas-liquid converter according to claim 7, characterized in that: The rear end of the pressure plate (16) is connected to a third spring (23), the number of the sealing columns (22) and the number of the closed channels (24) are the same, and each sealing column (22) is embedded in the corresponding closed channel (24).

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