Piston cylinder device capable of being used under atmosphere condition

Abstract

The utility model discloses a piston cylinder device capable of being used under an atmosphere condition, which comprises a base, a piston cylinder and a piston cylinder, a containing cavity is formed in the base, a piston is connected in the containing cavity in a sealing and sliding mode, a sealed hydraulic cavity is defined by the piston and the containing cavity, and the hydraulic cavity is communicated with a hydraulic station so as to drive the piston to move in the axial direction of the hydraulic cavity; the pressure transmission piece is coaxially arranged on the top surface of the piston and extends upwards to the outside of the accommodating cavity; the top plate is positioned above the pressure transmission piece and is fixedly connected with the base; the containing cavity is formed in the base and matched with the piston to form the sealed hydraulic cavity, the piston is jacked upwards through the pressure of a hydraulic station, so that pressure is applied to a sample, the height of the device can be reduced, the proportion of the device is reduced on the whole, and the device can be arranged in a small space.

Description

Technical Field

[0001] This utility model belongs to the field of press technology, specifically a piston cylinder device that can be used under atmospheric conditions. Background Technology

[0002] Piston-cylinder devices are also known as piston-cylinder presses or piston-cylinder high-pressure equipment.

[0003] As a high-pressure device, the piston-cylinder assembly often requires a large enclosure to house the cylinder due to the need to create an extreme experimental environment. Its drawbacks are:

[0004] Structural redundancy: The separate design of the lower cylinder and the lower plate requires the provision of mechanical buffer space, which leads to an increase in the height of the equipment.

[0005] The relevant documents disclose a piston-cylinder type ultra-high temperature and high pressure device and its usage method, including an upper base plate, a lower base plate, and an upper oil cylinder, a lower oil cylinder, an upper piston, a lower piston, a transformer, a pressure sensor, heating elements, an upper piston seat, and a pressure chamber for holding samples, etc., disposed between the upper base plate and the lower base plate; the upper base plate and the lower base plate are both horizontally arranged and connected by multiple tie rods.

[0006] This type of high-temperature and high-pressure device is large in size and difficult to use in environments with limited space. Utility Model Content

[0007] The purpose of this invention is to provide a piston cylinder device that can be used under atmospheric conditions to solve at least one of the above-mentioned technical problems.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A piston-cylinder device applicable under atmospheric conditions, comprising:

[0010] The base has a receiving cavity inside, and a piston is slidably connected in a sealed manner inside the receiving cavity. The piston and the receiving cavity together form a sealed hydraulic cavity, and the hydraulic cavity is connected to a hydraulic station to drive the piston to move along its axial direction.

[0011] A pressure transmission component is coaxially disposed on the top surface of the piston and extends upward to the outside of the receiving cavity;

[0012] The top plate is located above the pressure transmission component and is fixedly connected to the base.

[0013] This invention features a receiving cavity on the base, which, together with a piston, forms a sealed hydraulic chamber. When the hydraulic chamber is connected to a hydraulic station, the hydraulic station pumps hydraulic oil into the chamber, using the pressure to push the piston upwards, thereby applying pressure to the sample. The force of the piston on the base is evenly transmitted to the base through the hydraulic oil. Compared to existing high-temperature and high-pressure devices, this invention eliminates the need for a hydraulic cylinder mounted on the base, saving the buffer space between the cylinder and the base in existing technologies. This reduces the height of the device, thereby reducing its overall size and allowing it to be installed in a smaller space.

[0014] This invention uses a pressure-transmitting component to transfer pressure from the piston to the sample, and a top plate to hold the sample in place, so that the piston pressure can be applied to the sample.

[0015] Furthermore, the receiving cavity is a circular slot vertically opened on the top surface of the base, and the piston is coaxially arranged with the circular slot to facilitate the opening of the receiving slot.

[0016] Furthermore, the pressure transmitting component includes a first piston rod, which is coaxially arranged with the piston. The top surface of the piston presses against the bottom end of the first piston rod, and the piston is located in the receiving cavity. The first piston rod is used to transmit the pressure of the piston to the sample.

[0017] Furthermore, the pressure transmission component also includes a first pressure plate, which is coaxially disposed at the top end of the first piston rod and is used to place the sample.

[0018] Furthermore, the pressure transmission component also includes a second piston rod, which is coaxially fixed to the top surface of the piston, with its top end abutting against the bottom end of the first piston rod. The second piston rod is used to transmit the pressure of the piston to the first piston rod. Since the first piston rod is connected to the pressure plate, it is generally made to be relatively thin. If the first piston rod is in direct contact with the piston, the length of the first piston rod will be too long. The second piston rod is used to reduce the length of the first piston rod. Making the second piston rod relatively thicker can make the force of the piston be transmitted to the first piston rod more stably.

[0019] Furthermore, a positioning ring is provided at the top of the receiving cavity, and the first piston rod is coaxially arranged with the positioning ring and slidably connected. The positioning ring is used to limit the movement trajectory of the first piston rod.

[0020] Furthermore, a limiting part is provided on the upper part of the receiving cavity. The limiting part is located above the piston and is used to limit the movement range of the piston.

[0021] Furthermore, the top plate is fixed to the base by several tie rods, the top end of the tie rods passes through the top plate and is fixed to the top plate, and the bottom end of the tie rods passes through the base and is fixed to the base.

[0022] Furthermore, the bottom surface of the top plate is provided with a hydraulic cylinder, the hydraulic cylinder is provided with a downwardly extending third piston rod, and the bottom end of the third piston rod is provided with a second pressure plate. The hydraulic cylinder can apply pressure to the sample from above, and the third piston rod and the second pressure plate are used to transmit the force of the hydraulic cylinder to the sample.

[0023] Furthermore, a transformer is provided at the bottom end of the third piston rod, and the second pressure plate is located at the bottom end of the transformer. An electric heating wire is provided inside the second pressure plate, and the electric heating wire is electrically connected to the transformer. The force of the third piston rod is transmitted to the second pressure plate through the transformer. The transformer is also connected to the electric heating wire, which works in conjunction with the electric heating wire to heat the second pressure plate, thereby heating the sample and providing a high-temperature environment.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] (1) This utility model sets up a receiving cavity on the base, which, together with the piston, forms a sealed hydraulic cavity. When the hydraulic cavity is connected to the hydraulic station, the hydraulic station can pump hydraulic oil into the hydraulic cavity, and the pressure of the hydraulic station can be used to push the piston upward, thereby applying pressure to the sample. The force of the piston on the base is evenly transmitted to the base through the hydraulic oil. Compared with the existing high temperature and high pressure device, this utility model can eliminate the oil cylinder installed on the base, save the buffer space reserved between the oil cylinder and the base in the prior art, reduce the height of the device, thereby reducing the overall proportion of the device, and allowing the device to be set in a smaller space.

[0026] (2) This utility model replaces the function of the base plate and oil cylinder in the prior art by setting a base to cooperate with the piston. It can eliminate the connection structure between the base plate and the oil cylinder in the prior art, which is equivalent to integrating the base plate and the oil cylinder in the prior art. This can reduce the weight of the device and make the device suitable for more environments, such as setting the device in environments where the weight of the device is required. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a piston cylinder device that can be used under atmospheric conditions in this embodiment;

[0028] In the diagram: 1. Base; 101. Receiving cavity; 102. Hydraulic cavity; 2. Piston; 3. Pressure transmission component; 301. First piston rod; 302. First pressure plate; 303. Second piston rod; 4. Top plate; 5. Positioning ring; 6. Limiting part; 7. Pull rod; 8. Oil cylinder; 9. Third piston rod; 10. Second pressure plate; 11. Transformer. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] like Figure 1 As shown, this embodiment provides a piston cylinder device that can be used under atmospheric conditions, comprising:

[0031] The base 1 has a receiving cavity 101 inside, and a piston 2 is slidably connected in a sealed manner inside the receiving cavity 101. The piston 2 and the receiving cavity 101 together form a sealed hydraulic cavity 102. The hydraulic cavity 102 is connected to a hydraulic station to drive the piston 2 to move along its axial direction.

[0032] The pressure transmission component 3 is coaxially disposed on the top surface of the piston 2 and extends upward to the outside of the receiving cavity 101;

[0033] The top plate 4 is located above the pressure transmission component 3 and is fixedly connected to the base 1.

[0034] This invention features a receiving cavity 101 on the base 1, which, together with the piston 2, forms a sealed hydraulic cavity 102. When the hydraulic cavity 102 is connected to a hydraulic station, hydraulic oil can be pumped into the hydraulic cavity 102 using the hydraulic station. The pressure from the hydraulic station pushes the piston 2 upward, thereby applying pressure to the sample. The force of the piston 2 on the base 1 is evenly transmitted to the base 1 through the hydraulic oil. Compared with existing high-temperature and high-pressure devices, this invention eliminates the need for the oil cylinder mounted on the base 1, saving the buffer space reserved between the oil cylinder and the base 1 in the prior art. This reduces the height of the device, thereby reducing its overall size and allowing it to be placed in a smaller space. For example, it can be placed inside a glove box, allowing the device to be used under atmospheric conditions. The glove box provides a sealed space that can be filled with various gases to meet various special needs. Therefore, the glove box can provide atmospheric conditions, which refer to the conditions of a certain gas atmosphere.

[0035] The hydraulic station drives piston 2 to move along its axial direction, meaning that the hydraulic station can drive piston 2 to move upward.

[0036] Specifically, the receiving cavity 101 is a circular slot vertically opened on the top surface of the base 1, and the piston 2 is coaxially arranged with the circular slot.

[0037] In this embodiment, the base 1 can be a circular base 1, and the circular slot opened from the upper surface of the base 1 is a blind hole. The base 1, the receiving cavity 101 and the piston 2 are coaxially arranged and the axis is vertically arranged. The hydraulic station is connected to the hydraulic cavity 102 through the hydraulic pipeline. Specifically, the bottom surface of the hydraulic cavity 102 is provided with a vertical oil supply hole, which penetrates the base 1. The hydraulic pipeline is connected to the oil supply hole so that the hydraulic cavity 102 is connected to the hydraulic station.

[0038] In this embodiment, the base 1 may also consist of a circular base plate and a cylindrical mounting column. The mounting column is coaxially disposed on the top surface of the base plate and is integrally formed with the base plate. A circular slot is opened on the top surface of the mounting column to form a receiving cavity 101. The base 1 of this device, together with the piston 2, can achieve the effect of the base plate filling cylinder in the prior art. Therefore, the base 1 and piston 2 of this device can effectively reduce the weight of the device compared with the prior art.

[0039] Furthermore, a limiting part 6 is provided on the upper part of the receiving cavity 101. The limiting part 6 is located above the piston 2. In this embodiment, the limiting part 6 can be a limiting ring. The inner diameter of the limiting ring is smaller than the diameter of the piston 2, so that the limiting part 6 can block the piston 2 and prevent the piston 2 from continuing to move upward. The inner diameter of the limiting ring can also gradually increase from top to bottom, so that the inner diameter of the bottom end of the limiting ring is consistent with the inner diameter of the receiving cavity 101. This can save material for making the limiting ring. The receiving cavity 101 can be divided into an upper section and a lower section. The inner diameter of the upper section is larger than the inner diameter of the lower section for the installation of the limiting ring. The piston 2 is located in the lower section.

[0040] Specifically, the pressure transmission component 3 includes a first piston rod 301, which is coaxially arranged with the piston 2, and the top surface of the piston 2 presses against the bottom end of the first piston rod 301.

[0041] Specifically, the pressure transmitting component 3 further includes a first pressure plate 302, which is coaxially disposed at the top end of the first piston rod 301. A through hole is provided in the middle of the first pressure plate 302, and the top end of the first piston rod 301 extends into this through hole. This through hole is also used to place a sample.

[0042] Specifically, the pressure transmission component 3 further includes a second piston rod 303, which is coaxially fixed to the top surface of the piston 2, and its top end abuts against the bottom end of the first piston rod 301.

[0043] Furthermore, a positioning ring 5 is provided at the top of the receiving cavity 101. The first piston rod 301 is coaxially arranged with the positioning ring 5 and slidably connected. The positioning ring 5 can be fixed to the inner wall of the limiting ring by welding. The first piston rod 301 is inserted into the positioning ring 5 and is restricted by the positioning ring 5, and can only move radially along the first piston rod 301.

[0044] Specifically, the top plate 4 is fixed to the base 1 by several tie rods 7. The top end of the tie rod 7 passes through the top plate 4 and is fixed to the top plate 4, and the bottom end of the tie rod 7 passes through the base 1 and is fixed to the base 1. In this embodiment, the top end of the tie rod 7 is fixed to the top plate 4 by a nut, and the bottom end of the tie rod 7 is fixed to the base 1 by a nut.

[0045] Furthermore, the bottom surface of the top plate 4 is provided with a hydraulic cylinder 8, the hydraulic cylinder 8 is provided with a downwardly extending third piston rod 9, the bottom end of the third piston rod 9 is provided with a second pressure plate 10, and the hydraulic cylinder 8 is fixed to the bottom surface of the top plate 4, which can be fixed by welding or by bolts.

[0046] Furthermore, a transformer 11 is provided at the bottom end of the third piston rod 9, and the second pressure plate 10 is provided at the bottom end of the transformer 11. An electric heating wire is provided inside the second pressure plate 10, and the electric heating wire is electrically connected to the transformer 11.

[0047] It should be noted that although the present invention has been disclosed above with specific embodiments, the above embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A piston-cylinder arrangement usable in atmospheric conditions, characterized in that The utility model relates to a hydraulic pressure station, which comprises a base, a piston, a pressure transmission part and a top plate. The base is internally formed with a containing cavity, the piston is sealingly and slidingly connected in the containing cavity, the piston and the containing cavity jointly form a sealed hydraulic cavity, and the hydraulic cavity is communicated with a hydraulic pressure station to drive the piston to move along the axial direction. The pressure transmission part is coaxially arranged on the top surface of the piston and extends upward to outside of the containing cavity. The top plate is arranged above the pressure transmission part and is fixedly connected with the base.

2. A piston-cylinder arrangement usable in atmospheric conditions as claimed in claim 1, characterized in that The containing cavity is a circular slot vertically arranged on the top surface of the base.

3. An atmospheric piston cylinder apparatus as claimed in claim 1, wherein, The pressure transmission part comprises a first piston rod, the first piston rod is coaxially arranged with the piston, and the top surface of the piston is pressed against the bottom end of the first piston rod.

4. An atmospheric piston cylinder apparatus as claimed in claim 3, wherein, The pressure transmission part further comprises a first pressure disc, the first pressure disc is coaxially arranged on the top end of the first piston rod.

5. An atmospheric piston cylinder apparatus as claimed in claim 3, wherein, The pressure transmission part further comprises a second piston rod, the second piston rod is coaxially fixed on the top surface of the piston, and the top end of the second piston rod is abutted with the bottom end of the first piston rod.

6. An atmospheric piston cylinder apparatus as claimed in claim 3, wherein, The containing cavity is provided with a positioning ring at the top end, the first piston rod is coaxially arranged with the positioning ring and is slidingly connected.

7. An atmospheric piston cylinder apparatus as claimed in claim 1, wherein, The containing cavity is provided with a limiting part at the upper portion, and the limiting part is arranged above the piston.

8. An atmospheric piston cylinder apparatus as claimed in claim 1, wherein, The top plate is fixed with the base through a plurality of pull rods, the top end of the pull rod is arranged through the top plate and is fixed with the top plate, and the bottom end of the pull rod is arranged through the base and is fixed with the base.

9. An atmospheric piston cylinder apparatus as claimed in claim 1, wherein, The bottom surface of the top plate is provided with an oil cylinder, the oil cylinder is provided with a third piston rod extending downward, and the bottom end of the third piston rod is provided with a second pressure disc.

10. A piston-cylinder arrangement usable in atmospheric conditions according to claim 9, characterized in that The bottom end of the third piston rod is provided with a transformer, the second pressure disc is arranged at the bottom end of the transformer, the second pressure disc is internally provided with an electric heating wire, and the electric heating wire is electrically connected with the transformer.

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