Low-temperature medium driving mechanism

Abstract

The utility model discloses a low-temperature medium driving mechanism, and belongs to the technical field of low-temperature operation of mechanical equipment. The system mainly comprises a low-temperature oil tank; the normal-temperature double-outlet-rod hydraulic cylinder is connected to the low-temperature oil tank through a pipeline, and the normal-temperature double-outlet-rod hydraulic cylinder is provided with two groups of output shafts which are oppositely arranged; the low-temperature chamber comprises a first low-temperature chamber located on the left side of the normal-temperature double-outlet-rod hydraulic cylinder and a second low-temperature chamber located on the right side of the normal-temperature double-outlet-rod hydraulic cylinder; and the control valve group is arranged on the other side of the low-temperature chamber, and the control valve group is provided with a first one-way valve group which is connected to the first low-temperature chamber through a pipeline and a second one-way valve group which is connected to the second low-temperature chamber through a pipeline. According to the low-temperature medium driving mechanism, the low-temperature medium driving cost is reduced, equipment such as a low-temperature pump in contact with the low-temperature medium is prevented from being damaged, and the risk of equipment damage is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of low-temperature operation of mechanical equipment, and specifically to a low-temperature medium driving mechanism. Background Art

[0002] A cryogenic medium drive mechanism is a mechanical device or apparatus designed for use in cryogenic environments. It typically utilizes cryogenic gases or liquids as an energy source to drive other mechanical systems. These mechanisms are widely used in fields such as cryogenic physics, superconducting technology, aerospace, and specialized industrial processes.

[0003] In some experiments and application systems, it is often necessary to drive low-temperature media with a temperature of less than -50°C. Traditional solutions use cryogenic pumps and extrusion methods to drive them.

[0004] However, due to the high cost of driving cryogenic pumps and the fact that the properties of some materials will change at low temperatures, it is easy for equipment such as cryogenic pumps that have come into contact with cryogenic media to be damaged, increasing the risk of equipment damage. Therefore, it is necessary to provide a cryogenic medium driving mechanism to solve the above problems.

[0005] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Summary of the Invention

[0006] Based on the above-mentioned problems existing in the prior art, the problem to be solved by this application is: to provide a cryogenic medium driving mechanism, which reduces the cost of driving the cryogenic medium, prevents damage to equipment such as cryogenic pumps that have been in contact with the cryogenic medium, and reduces the risk of equipment damage.

[0007] The technical solution adopted by the present application to solve the technical problem is: a low-temperature medium driving mechanism, comprising:

[0008] A low-temperature oil tank, which is used to store low-temperature medium;

[0009] A normal temperature double-rod hydraulic cylinder, the pipeline of which is connected to the low temperature oil tank, and the normal temperature double-rod hydraulic cylinder has two sets of oppositely arranged output shafts;

[0010] A low-temperature chamber, comprising a first low-temperature chamber located on the left side of the normal-temperature double-rod hydraulic cylinder and a second low-temperature chamber located on the right side of the normal-temperature double-rod hydraulic cylinder;

[0011] A control valve group is provided on the other side of the low-temperature chamber. The control valve group comprises a first one-way valve group connected to the first low-temperature chamber by a pipeline, and a second one-way valve group connected to the second low-temperature chamber by a pipeline. The first one-way valve group comprises:

[0012] A sealed cavity is installed on one side of the first low-temperature chamber, the upper end pipeline of the sealed cavity is connected to an outlet one-way valve, the lower end pipeline of the sealed cavity is connected to an inlet one-way valve, the inlet one-way valve and the outlet one-way valve are arranged opposite to each other, and the inlet one-way valve is connected to the low-temperature oil tank by a pipeline.

[0013] Furthermore, the upper end of the normal temperature double-rod hydraulic cylinder is electrically connected to an electromagnetic reversing valve.

[0014] Furthermore, a normal temperature drive pump is provided on one side of the normal temperature double-rod hydraulic cylinder, and a motor is provided on one side of the normal temperature drive pump. The output shaft of the motor is fixedly installed between the shaft of the normal temperature drive pump, and the motor is used to drive the normal temperature drive pump to operate. The normal temperature drive pump is electrically connected to the normal temperature double-rod hydraulic cylinder.

[0015] Furthermore, the first low-temperature chamber has a cavity, and a push plate is slidably connected to the inside of the cavity. The push plate and the cavity are set to low-temperature materials. A push rod is fixedly installed at the other end of the push plate, and the push rod is fixed to the output shaft of the normal temperature double-rod hydraulic cylinder by bolts.

[0016] Furthermore, the other end of the one-way valve is connected to a discharge pipe.

[0017] The beneficial effects of the present application are as follows: the present application provides a low-temperature medium driving mechanism, which realizes driving the low-temperature medium through normal-temperature pneumatic parts through the reciprocating continuous drive of the normal-temperature double-rod hydraulic cylinder, thereby reducing the cost of driving the low-temperature medium, and preventing damage to equipment such as low-temperature pumps that have been in contact with the low-temperature medium, thereby reducing the risk of equipment damage.

[0018] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0020] Figure 1 This is an overall schematic diagram of a low-temperature medium driving mechanism in this application;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle;

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Normal temperature drive pump; 2. Motor; 3. Solenoid reversing valve; 4. Control valve group; 41. First one-way valve group; 411. Sealed chamber; 412. Outlet one-way valve; 413. Inlet one-way valve; 42. Second one-way valve group; 43. Discharge pipe; 5. First low-temperature chamber; 51. Cavity; 52. Push rod; 53. Push plate; 6. Second low-temperature chamber; 7. Normal temperature double-rod hydraulic cylinder; 8. Low-temperature oil tank. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0026] like Figure 1 As shown, the present application provides a low-temperature medium driving mechanism, including a low-temperature oil tank 8, which is used to store low-temperature medium. In order to facilitate the driving of the medium in the low-temperature oil tank 8, a normal-temperature double-rod hydraulic cylinder 7 is connected to the pipeline on the low-temperature oil tank 8. The normal-temperature double-rod hydraulic cylinder 7 has two sets of oppositely arranged output shafts;

[0027] At the same time, a normal temperature drive pump 1 is provided on one side of the normal temperature double-rod hydraulic cylinder 7, and a motor 2 is provided on one side of the normal temperature drive pump 1. The output shaft of the motor 2 is fixedly installed between the shaft of the normal temperature drive pump 1. The motor 2 is used to drive the normal temperature drive pump 1 to operate. It should be noted that the normal temperature drive pump 1 is electrically connected to the normal temperature double-rod hydraulic cylinder 7. Therefore, starting the normal temperature drive pump 1 can drive the two sets of output shafts of the normal temperature double-rod hydraulic cylinder 7 to move left and right;

[0028] In addition, the upper end of the normal temperature double-rod hydraulic cylinder 7 is electrically connected to the electromagnetic reversing valve 3, so that the output direction of the two groups of output shafts in the normal temperature double-rod hydraulic cylinder 7 can be controlled by the electromagnetic reversing valve 3.

[0029] like Figure 1-Figure 2As shown, a low-temperature chamber is provided on each side of the normal temperature double-rod hydraulic cylinder 7, and the low-temperature chamber includes a first low-temperature chamber 5 located on the left side of the normal temperature double-rod hydraulic cylinder 7, and a second low-temperature chamber 6 located on the right side of the normal temperature double-rod hydraulic cylinder 7. At the same time, the first low-temperature chamber 5 and the second low-temperature chamber 6 are each provided with an air port above one end close to each other, and the two groups of air ports are connected by a pipe. The air pressure balance of the first low-temperature chamber 5 and the second low-temperature chamber 6 is ensured by the air port and the pipe. The structural components of the first low-temperature chamber 5 and the second low-temperature chamber 6 are the same. For the convenience of understanding, the following description will be carried out by taking the first low-temperature chamber 5 as an example. Specifically:

[0030] The first low-temperature chamber 5 has a cavity 51, and a push plate 53 is slidably connected to the inside of the cavity 51. The push plate 53 and the cavity 51 are both made of low-temperature materials. A push rod 52 is fixedly installed on the other end of the push plate 53. The push rod 52 is fixed to the output shaft of the normal temperature double-rod hydraulic cylinder 7 by bolts, and an air outlet (not marked in the figure) is provided at the end of the cavity 51 away from the push rod 52. Therefore, when the normal temperature double-rod hydraulic cylinder 7 is active, the push rod 52 can be pushed to push the gas in the cavity 51 outward or to suck the external gas inward.

[0031] In order to better control the flow of the medium in the low-temperature oil tank 8, a control valve group 4 is provided on the side of the low-temperature chamber away from the normal-temperature double-rod hydraulic cylinder 7. The control valve group 4 includes a first one-way valve group 41 connected to the air outlet of the first low-temperature chamber 5 by a pipeline, and a second one-way valve group 42 connected to the air outlet of the second low-temperature chamber 6 by a pipeline. In this application, the structural components of the first one-way valve group 41 and the second one-way valve group 42 are the same. For the sake of ease of understanding, the following description will be made by taking the first one-way valve group 41 as an example. Specifically:

[0032] The first one-way valve group 41 has a sealed cavity 411, one side of which is fixedly mounted on the air outlet on the cavity body 51, and the upper end pipe of the sealed cavity 411 is connected to the outlet one-way valve 412, and the lower end pipe of the sealed cavity 411 is connected to the inlet one-way valve 413, the inlet one-way valve 413 and the outlet one-way valve 412 are arranged opposite to each other, and the inlet one-way valve 413 is connected to the low-temperature oil tank 8 by a pipe, and the other end pipe of the outlet one-way valve 412 is connected to the discharge pipe 43, and the medium is driven to the desired position through the discharge pipe 43.

[0033] In summary: when the system is running, the normal temperature drive pump 1 is started, first driving the normal temperature double-rod hydraulic cylinder 7 to move rightward, and the normal temperature double-rod hydraulic cylinder 7 drives the push rod 52 and the push plate 53 to make the first low temperature chamber 5 perform oil suction action, and the medium in the low temperature oil tank 8 is sucked into the sealed chamber 411 and the cavity 51 through the inlet check valve 413 of the first check valve group 41;

[0034] At the same time, the normal temperature double-rod hydraulic cylinder 7 pushes the second low temperature chamber 6 to make oil action, and discharges the medium into the discharge pipe 43 through the outlet check valve 412 of the second check valve group 42. Therefore, at this time, the medium in the low temperature oil tank 8 is sucked in through the first check valve group 41 and discharged through the second check valve group 42, and is driven to the desired direction;

[0035] When the normal temperature double-rod hydraulic cylinder 7 moves to the right to the end of the stroke, the electromagnetic reversing valve 3 is driven to turn, so that the normal temperature double-rod hydraulic cylinder 7 moves to the left. Similarly, at this time, the normal temperature double-rod hydraulic cylinder 7 drives the first low-temperature chamber 5 to perform oil-extraction action, and the normal temperature double-rod hydraulic cylinder 7 drives the second low-temperature chamber 6 to perform oil-suction action. Therefore, at this time, the medium in the low-temperature oil tank 8 absorbs oil through the second one-way valve group 42 and discharges oil through the first one-way valve group 41, and is driven to the required direction. Therefore, through the reciprocating continuous drive of the normal temperature double-rod hydraulic cylinder 7, the low-temperature medium is driven by the normal temperature gas parts, thereby reducing the cost of driving the low-temperature medium, and preventing damage to equipment such as the low-temperature pump that has been contacted by the low-temperature medium, thereby reducing the risk of equipment damage.

[0036] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A low-temperature medium driving mechanism, characterized in that: include: A low-temperature oil tank (8), the low-temperature oil tank (8) is used to store a low-temperature medium; A normal temperature double-rod hydraulic cylinder (7), the normal temperature double-rod hydraulic cylinder (7) having a pipeline connected to the low temperature oil tank (8), and the normal temperature double-rod hydraulic cylinder (7) having two sets of output shafts arranged oppositely; A low-temperature chamber, comprising a first low-temperature chamber (5) located on the left side of the normal-temperature double-rod hydraulic cylinder (7), and a second low-temperature chamber (6) located on the right side of the normal-temperature double-rod hydraulic cylinder (7); A control valve group (4) is provided on the other side of the low-temperature chamber. The control valve group (4) comprises a first one-way valve group (41) connected to the first low-temperature chamber (5) by a pipeline, and a second one-way valve group (42) connected to the second low-temperature chamber (6) by a pipeline. The first one-way valve group (41) comprises: A sealed cavity (411) is installed on one side of the first low-temperature chamber (5); an upper end pipeline of the sealed cavity (411) is connected to an outlet one-way valve (412); a lower end pipeline of the sealed cavity (411) is connected to an inlet one-way valve (413); the inlet one-way valve (413) and the outlet one-way valve (412) are arranged relative to each other; and a pipeline is connected between the inlet one-way valve (413) and the low-temperature oil tank (8).

2. A low-temperature medium driving mechanism according to claim 1, characterized in that: The upper end of the normal temperature double-rod hydraulic cylinder (7) is electrically connected to an electromagnetic reversing valve (3).

3. The low-temperature medium driving mechanism according to claim 1, characterized in that: A normal temperature drive pump (1) is provided on one side of the normal temperature double-rod hydraulic cylinder (7), and a motor (2) is provided on one side of the normal temperature drive pump (1). The output shaft of the motor (2) is fixedly installed with the shaft of the normal temperature drive pump (1), and the motor (2) is used to drive the normal temperature drive pump (1) to operate. The normal temperature drive pump (1) and the normal temperature double-rod hydraulic cylinder (7) are electrically connected.

4. The low-temperature medium driving mechanism according to claim 1, characterized in that: The first low-temperature chamber (5) has a cavity (51), and a push plate (53) is slidably connected to the interior of the cavity (51). The push plate (53) and the cavity (51) are made of a low-temperature material. A push rod (52) is fixedly installed at the other end of the push plate (53), and the push rod (52) is fixed to the output shaft of the normal-temperature double-rod hydraulic cylinder (7) by bolts.

5. The low-temperature medium driving mechanism according to claim 1, characterized in that: The other end of the one-way valve (412) is connected to a discharge pipe (43).

Images