Pressure variable-volume pressure stabilizer

Abstract

The utility model relates to the technical field of pressure control machinery, in particular to a pressure variable-volume pressure stabilizing device which comprises a flange, a vacuum tank and a pressure stabilizing tank, the flange divides the pressure variable-volume pressure stabilizing device into the vacuum tank and the pressure stabilizing tank, a piston A is assembled in the vacuum tank, and a piston B is assembled in the pressure stabilizing tank; a mounting hole site is formed in the middle of the flange, the connecting rod penetrates through the eccentric hole site of the flange, one end of the connecting rod is connected with the piston A, and one end of the connecting rod is connected with the piston B. The technical problems that in the prior art, the volume is fixed, so that the pressure control range is large, no stable pressure value exists, the adjusting speed is low, and self pressure relief and pressure supplement cannot be achieved are solved. And the effects of automatically relieving and supplementing the pressure of the equipment and quickly maintaining the stable working pressure of the equipment are achieved.

Description

Technical Field

[0001] The utility model relates to the field of pressure control machinery, in particular to a pressure variable capacitance stabilizing device. Background Art

[0002] In practical applications, the existing pressure stabilization method relies on exhaust valves to release pressure and air pumps to replenish pressure. The volume is fixed, resulting in a large pressure control range, no stable pressure value, slow adjustment speed, and inability to rely on self-pressure relief. In view of the shortcomings of the above existing pressure stabilization methods, the utility model provides a pressure variable capacitance pressure stabilization device. Utility Model Content

[0003] The purpose of the utility model is to provide a pressure variable capacitance voltage stabilizing device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A pressure variable capacitance pressure stabilizing device comprises a flange, a vacuum tank body and a pressure stabilizing tank body; the flange divides the pressure variable capacitance pressure stabilizing device into the vacuum tank body and the pressure stabilizing tank body, a piston A is installed in the vacuum tank body, and a piston B is installed in the pressure stabilizing tank body; a mounting hole is provided at an eccentric position of the flange, a connecting rod passes through the eccentric hole of the flange, one end of the connecting rod is connected to the piston A, and the other end of the connecting rod is connected to the piston B;

[0006] Preferably, the flange is a flat cylindrical structure, a vacuum channel is provided at one end inside the flange, and an atmospheric channel is provided at the other end inside the flange; a vacuum induction switch is provided on the vacuum channel, one end of the vacuum channel is communicated with the vacuum cavity of the vacuum tank body, the other end of the vacuum channel is connected to the vacuum pump, one end of the atmospheric channel is communicated with the atmospheric cavity B of the voltage-stabilizing tank body, and the other end of the atmospheric channel is communicated with the outside atmosphere;

[0007] Preferably, the piston A is located in the vacuum tank body, and the vacuum tank body is divided into a vacuum chamber and an atmospheric chamber A by the piston A. The vacuum chamber is communicated with the vacuum channel inside the flange, and the atmospheric chamber A is communicated with the external atmosphere through the atmospheric port on the vacuum tank body;

[0008] Preferably, the piston B is located in the pressure-stabilizing tank body, and the pressure-stabilizing tank body is divided into a pressure-stabilizing gas chamber and an atmospheric chamber B by the piston B. The pressure-stabilizing gas chamber is provided with a compressed gas interface, a pressure-stabilizing interface, a pressure relief valve, a stroke sensing switch on, and a stroke sensing switch off;

[0009] Preferably, the connecting rod is a cylindrical smooth rod, and both ends of the connecting rod are mounted on the eccentric holes of piston A and piston B. A mutual inductor is mounted on piston B, and the mutual inductor, the stroke sensing switch on, and the stroke sensing switch off form a stroke sensing switch group;

[0010] Preferably, the vacuum tank body is a cylindrical tank body with a smooth inner wall, one end of the vacuum tank body is hemispherical, an atmospheric vent is provided on the hemispherical body, and the other end is fixed to one side of the flange with bolts, and a sealing ring is provided at the junction of the vacuum tank body and the flange;

[0011] Preferably, the pressure stabilizing tank body is a cylindrical tank body with a smooth inner wall, one end of the pressure stabilizing tank body is hemispherical, and the other end is bolted to the other side of the flange;

[0012] Preferably, the center of the circle of piston A, the center of the circle of piston B and the center of the circle of the flange are on a straight line, and the straight line is parallel to the axis line of the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The constant atmospheric pressure acting on piston A is used to react on the gas in the pressure-stabilizing gas chamber. By changing the volume of the pressure-stabilizing gas chamber, that is, increasing the volume to relieve pressure, reducing the volume to replenish pressure, the pressure of the gas in the equipment gas chamber can be kept stable.

[0015] 2. The centers of piston A, piston B and flange are on a straight line, and the axis of the connecting rod is parallel to the straight line, with a spacing of 1 to 2 mm, to ensure that piston A and piston B can only move axially in this device and cannot rotate in this device. Ensure that the induction switch group is not misplaced and can work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a motion state diagram of the device in the utility model when the air chamber capacity is small;

[0018] Figure 3 This is a motion state diagram of the equipment in the utility model when the air chamber capacity is normal;

[0019] Figure 4 This is a motion state diagram when the air chamber capacity of the device in the utility model is too large.

[0020] In the figure: 1 atmospheric port, 2 vacuum tank body, 3 atmospheric chamber A, 4 piston A, 5 vacuum chamber, 6 vacuum sensing switch, 7 vacuum channel, 8 atmospheric channel, 9 flange, 10 atmospheric chamber B, 11 connecting rod, 12 piston B, 13 mutual inductor, 14 voltage-stabilizing tank body, 15 stroke sensing switch on, 16 compressed gas interface, 17 pressure relief valve, 18 voltage-stabilizing gas chamber, 19 voltage-stabilizing interface, 20 bolts, 21 stroke sensing switch off. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0025] refer to Figure 1 As shown, the utility model provides a pressure variable capacitance pressure stabilizing device, comprising a flange 9, a vacuum tank body 2 and a pressure stabilizing tank body 14; the flange 9 divides the pressure variable capacitance pressure stabilizing device into the vacuum tank body 2 and the pressure stabilizing tank body 14, the vacuum tank body 2 is equipped with a piston A4, and the pressure stabilizing tank body 14 is equipped with a piston B12; a mounting hole is provided at an eccentric position of the flange 9, a connecting rod 11 passes through the eccentric hole of the flange 9, one end of the connecting rod 11 is connected to the piston A, and the other end of the connecting rod 11 is connected to the piston B.

[0026] A vacuum channel 7 is provided at one end of the flange 9, and an atmospheric channel 8 is provided at the other end of the flange 9; a vacuum sensing switch 6 is provided on the vacuum channel 7, one end of the vacuum channel 7 is communicated with the vacuum chamber 5 of the vacuum tank body 2, and the other end of the vacuum channel 7 is connected to the vacuum pump, one end of the atmospheric channel 8 is communicated with the atmospheric chamber B10 of the voltage-stabilizing tank body 14, and the other end of the atmospheric channel 8 is communicated with the outside atmosphere.

[0027] The piston A4 divides the vacuum tank body 2 into an atmospheric chamber A3 and a vacuum chamber 5, and a sealing ring is installed on the piston A4; the piston B12 divides the pressure-stabilizing tank body 14 into an atmospheric chamber B10 and a pressure-stabilizing gas chamber 18, and a sealing ring is also installed on the piston B12; the connecting rod 11 is a cylindrical polished rod, and the connecting rod 11 passes through the circular mounting hole in the middle of the flange, one end of the connecting rod 11 is located in the vacuum tank body 2, and the other end is located in the pressure-stabilizing tank body 14, the piston A4 and the piston B12 are flat cylindrical shapes, and there are sealing ring mounting grooves around them, and sealing rings are installed in the mounting grooves; the piston A4 and the piston B12 are provided with mounting holes at eccentric positions, which are located in the vacuum tank body 2 and the pressure-stabilizing tank body 14 respectively, and the two ends of the connecting rod 11 are installed on the eccentric holes of the piston A4 and the piston B12, and the piston B12 is installed with a mutual inductor 13, which forms a travel sensing switch group with the travel sensing switch open 15 and the travel sensing switch close 21.

[0028] The flange 9 is a flat cylindrical structure. A connecting rod sealing ring is installed in the off-center mounting hole of the flange 9. There are bolt holes on its outer edge and mounting holes at the off-center position. There is a vacuum channel 7 and an atmospheric channel 8 inside the flange 9. One end of the vacuum channel 7 is connected to the vacuum chamber 5 of the vacuum tank body 2, and the other end is connected to the vacuum pump through a high-pressure air pipe. One end of the atmospheric channel 8 is connected to the atmospheric chamber B10 of the pressure-stabilizing tank body 14, and the other end is connected to the outside atmosphere. The vacuum tank body 2 is a cylindrical tank body with a smooth inner wall, one end is hemispherical, and there is an atmospheric port 1 on the hemispherical shape. There is a sealing ring at the junction with the flange 9 at the other end.

[0029] The vacuum tank body 2 is fixed to one side of the flange 9 by bolts 20, dividing the piston A4 into a vacuum chamber 5 and an atmospheric chamber A3. The vacuum chamber 5 is communicated with the vacuum channel 7 in the flange 9, and the atmospheric chamber A3 is communicated with the external atmosphere through the atmospheric port 1 on the vacuum tank body 2.

[0030] The pressure-stabilizing tank body 14 is a cylindrical tank body with a smooth inner wall, one end of which is hemispherically closed, and the other end is fixed to the other side of the flange 9 by bolts 20. The pressure-stabilizing tank body 14 is divided into a pressure-stabilizing gas chamber 18 and an atmospheric chamber B10 by a piston B12. The pressure-stabilizing gas chamber 18 is provided with a compressed gas interface 16, a pressure-stabilizing interface 19, a pressure relief valve 17, a stroke sensing switch open 15, and a stroke sensing switch close 21.

[0031] The centers of the pistons A, B, and the flange are on a straight line. The axis of the connecting rod is parallel to this line, with a spacing of 1 to 2 millimeters. Its function is to ensure that pistons A and B can only move axially in this device and cannot rotate in this device. Ensure that the induction switch group is not misaligned and can work properly.

[0032] For piston A4 in the vacuum tank 2, the top circular area of one of its faces is denoted as S1, and for piston B12 in the pressure stabilizing tank 14, the top area of one of its faces is denoted as S2. In actual operation, when S1 > S2, the stable pressure value in the pressure stabilizing gas chamber is large; when S1 < S2, the stable pressure value in the pressure stabilizing gas chamber is small. Different stable pressure values can be obtained through the change of the piston area. Each pressure variable volume pressure stabilizing device has only one stable pressure value. According to the size of the gas volume change and the stable pressure value to be achieved when the air chamber of the pressure stabilizing equipment works, a matching device is selected.

[0033] At the beginning of operation, pistons A4 and B12 are in Figure 2 position. The atmosphere vent 1 on the vacuum tank 2 and the atmosphere passage 8 in the flange 9 are always in an open state and communicate with the outside atmosphere;

[0034] First step, the pressure stabilizing interface 19 is connected to the equipment that needs pressure stabilization through a gas pipe. The vacuum passage 8 on the flange 9 is connected to a vacuum pump, and the compressed gas interface 16 is connected to an air pump;

[0035] Second step, connect the vacuum induction switch 6 to the power supply line of the vacuum pump, and connect the travel induction switch on and the travel induction switch off to the power supply line of the air pump;

[0036] Third step, power on the electrical equipment. The vacuum induction switch 6 turns on the power supply of the vacuum pump, and the vacuum pump works to evacuate the vacuum chamber 5. When the vacuum is reached, the vacuum induction switch 6 automatically disconnects the power supply and the vacuum pump stops working;

[0037] At this time, piston B in the pressure stabilizing tank 14 is at the position of the travel induction switch on 15, that is, Figure 2 position. The travel induction switch on 15 senses the mutual inductor 13 on piston B12 and turns on the power supply of the air pump. The air pump works and pumps air into the pressure stabilizing gas chamber 18. When a certain pressure, that is, the stable pressure value, is reached and continues to pump air, the pressure starts to push pistons A4, B12, and the connecting rod 11 to move simultaneously. The volume of the vacuum chamber 5 becomes larger, and the volume of the pressure stabilizing gas chamber 18 becomes larger. But when piston B12 moves to the position of the travel induction switch off 21 (which is the middle position of the total travel of the piston component), that is, Figure 3 position, the travel induction switch off 21 senses the mutual inductor 13 on piston B12, and the travel induction switch off 21 turns off the power supply of the air pump. The air pump stops working, and piston B12 stays at Figure 3At the position shown, the device enters the working state at this time, and the pressure in the pressure stabilizing gas chamber 18 reaches the gas pressure required in the gas chamber of the pressure stabilizing equipment;

[0038] Step 4, referring to Figure 3 , there are two forces acting on the fixed body of piston A4, piston B12 and connecting rod 11. One is the atmospheric pressure acting on piston A4 in the vacuum tank body 2, denoted as F1, and the other is the pressure of the compressed gas acting on piston B12 in the pressure stabilizing tank body 14, denoted as F2. At this time, F1 = F2, and piston A4 and piston B12 remain stationary at the position marked by Figure 3 . Since the atmospheric pressure remains unchanged and the area of piston A4 in the vacuum tank body 2 remains unchanged, the force F1 remains constant all the time. That is, the pressure acting on the gas in the pressure stabilizing gas chamber 18 through piston A4, piston B12 and connecting rod 11 remains unchanged and is a constant force, so that the pressure stabilizing gas chamber 18 has a stable pressure value. When the gas volume or pressure in the equipment gas chamber increases, the gas will enter the pressure stabilizing gas chamber 18. At this time, the force F2 will increase, that is, F1 < F2, and piston A4, piston B12 and connecting rod 11 will move accordingly, and the volume of the pressure stabilizing gas chamber 18 will increase until F1 = F2 and then stop. At this time, it plays a role of increasing the volume and stabilizing the pressure for the equipment gas chamber. When the gas volume and pressure in the equipment gas chamber both decrease, the gas in the pressure stabilizing gas chamber 18 will enter the gas chamber of this equipment, that is, F1 > F2, and piston A4, piston B12 and connecting rod 11 will also move accordingly, and the volume of the pressure stabilizing gas chamber 18 will decrease until F1 = F2 and then stop, playing a role of discharging the volume and stabilizing the pressure for the gas in the equipment gas chamber;

[0039] It can be seen from the working process that the force F1 is a constant force acting on the gas in the pressure stabilizing gas chamber 18, making the pressure stabilizing gas chamber 18 have a stable pressure value, ensuring the stability of the gas pressure in the pressure stabilizing gas chamber 18. Piston A4 and piston B12 can move when the air pressure in the pressure stabilizing gas chamber 18 changes, and can relieve pressure and supplement pressure by changing the volume, with the advantages of fast pressure stabilizing speed, no gas leakage and less working frequency of the air pump.

[0040] In addition, there are the following situations in actual work:

[0041] The first situation is that when the vacuum degree of the vacuum chamber 5 does not meet the requirements, the vacuum induction switch 6 automatically turns on the power supply of the vacuum pump to evacuate the vacuum chamber 5. When the requirements are met, the power supply is automatically disconnected and the vacuum pumping stops;

[0042] The second situation is that when the capacity of the equipment gas chamber increases relatively large and exceeds the capacity range of this device, piston A4 and piston B12 are in the position of Figure 4 , the air pressure in the pressure stabilizing gas chamber 18 rises, and the pressure relief valve 17 on the pressure stabilizing tank body 14 discharges air outward to maintain the stability of its volume and pressure;

[0043] In the third case, when the air chamber capacity of the equipment is reduced greatly and exceeds the limit of its own replenishment capacity, piston A4 and piston B12 will Figure 2 At the marked position, the travel sensing switch 15 will sense the mutual inductor 13 on the piston B12 and connect the power of the air pump, and the air pump will increase the capacity and pressure of the pressure-stabilizing gas chamber 18. When the piston B12 moves to the travel sensing switch 21, that is, Figure 3 When the air pump reaches the desired position, turn off the power supply of the air pump and the air pump stops working to maintain its capacity and pressure stable.

[0044] The device can be used on a reactor to provide a precise and constant working pressure for the reactor, and can also be used on a shock-absorbing airbag to quickly absorb and supplement the pressure changes in the airbag caused by vibration, thereby minimizing vibration.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure variable capacitance voltage stabilizing device, characterized in that: The invention comprises a flange (9), a vacuum tank body (2) and a pressure-stabilizing tank body (14); the flange (9) divides the pressure-variable-capacitance-stabilizing device into the vacuum tank body (2) and the pressure-stabilizing tank body (14); a piston A (4) is installed in the vacuum tank body (2), and a piston B (12) is installed in the pressure-stabilizing tank body (14); a mounting hole is provided at an eccentric position of the flange (9); a connecting rod (11) passes through the eccentric hole of the flange (9); one end of the connecting rod (11) is connected to the piston A (4), and the other end of the connecting rod (11) is connected to the piston B (12).

2. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The flange (9) is a flat cylindrical structure. A vacuum channel (7) is provided at one end of the flange (9), and an atmospheric channel (8) is provided at the other end of the flange (9). A vacuum sensing switch (6) is provided on the vacuum channel (7). One end of the vacuum channel (7) is communicated with a vacuum chamber (5) of a vacuum tank body (2), and the other end of the vacuum channel (7) is connected to a vacuum pump. One end of the atmospheric channel (8) is communicated with an atmospheric chamber B (10) of a pressure-stabilizing tank body (14), and the other end of the atmospheric channel (8) is communicated with the outside atmosphere.

3. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The piston A (4) is located in the vacuum tank body (2). The vacuum tank body (2) is divided into a vacuum chamber (5) and an atmospheric chamber A (3) by the piston A (4). The vacuum chamber (5) is communicated with a vacuum channel (7) inside the flange (9). The atmospheric chamber A (3) is communicated with the external atmosphere through an atmospheric port (1) on the vacuum tank body (2).

4. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The piston B (12) is located in the pressure-stabilizing tank body (14). The pressure-stabilizing tank body (14) is divided into a pressure-stabilizing gas chamber (18) and an atmospheric chamber B (10) by the piston B (12). The pressure-stabilizing gas chamber (18) is provided with a compressed gas interface (16), a pressure-stabilizing interface (19), a pressure relief valve (17), a stroke sensing switch on (15), and a stroke sensing switch off (21).

5. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The piston A (4) and the piston B (12) are in the shape of flat cylinders. The piston A (4) and the piston B (12) are surrounded by sealing ring installation grooves, and sealing rings are installed in the sealing ring installation grooves. The piston A (4) and the piston B (12) have installation holes at eccentric positions.

6. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The connecting rod (11) is a cylindrical smooth rod. Both ends of the connecting rod (11) are mounted on eccentric holes of the piston A (4) and the piston B (12). A mutual inductor (13) is mounted on the piston B (12). The mutual inductor (13) and the stroke sensing switch on (15) and the stroke sensing switch off (21) form a stroke sensing switch group.

7. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The vacuum tank body (2) is a cylindrical tank body with a smooth inner wall. One end of the vacuum tank body (2) is hemispherical with an air vent (1) on the hemispherical shape. The other end is fixed to one side of the flange (9) by bolts (20). A sealing ring is provided at the junction of the vacuum tank body (2) and the flange (9).

8. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The pressure stabilizing tank body (14) is a cylindrical tank body with a smooth inner wall. One end of the pressure stabilizing tank body (14) is hemispherical, and the other end is fixed to the other side of the flange (9) by bolts (20).

9. The pressure variable capacitance voltage stabilizing device according to claim 1, characterized in that: The centers of the piston A (4), the piston B (12) and the flange (9) are on a straight line, and the straight line is parallel to the axis of the connecting rod (11).

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