Gas chamber piston torsion measuring device

Abstract

The utility model discloses a gas chamber piston torsion measuring device, which belongs to the technical field of gas chambers and comprises a measuring shell, an inner connecting rod is rotatably connected to the middle of the bottom end of the measuring shell through a bearing, and the top end of the inner connecting rod extends into the measuring shell and is connected with an encoder through a coupler. A torsion limiting mechanism is assembled between the position, located in the measuring shell and below the encoder, of the inner connecting rod and the measuring shell, the bottom end of the inner connecting rod extends to the position below the measuring shell and is sleeved with an outer sleeving rod, a movable limiting mechanism is assembled between the inner connecting rod and the outer sleeving rod, and a measuring shell cover is arranged at the top end of the measuring shell; according to the gas chamber piston torsion measuring structure, the encoder is located at the top end of the gas chamber, the measuring shell cover and the measuring shell are connected through the fastening screw, the encoder can be maintained or overhauled only by disassembling the fixing screw during maintenance or overhaul, convenience and rapidness are achieved, time and labor are saved, and the practical performance of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas cabinets, and in particular relates to a gas cabinet piston torsion measuring device. Background Art

[0002] A gas tank refers to a steel container for storing industrial and domestic gas, including wet gas tanks and dry gas tanks. The dry gas tank is a piston structure sealed with thin oil or a soft film. During its operation, the piston moves frequently, so it is easy to twist. If it is not discovered and handled in time, it may cause overpressure of gas in the gas tank. In severe cases, it may even cause tearing of the soft film, leading to gas leakage, causing significant economic losses and safety hazards. Therefore, the torsion measurement of the gas tank piston is particularly important.

[0003] Chinese Patent No. 201820791765.5 discloses a device for measuring the torsion of a gas tank piston based on machine vision. A machine vision component VIA and a machine vision component VIB are respectively arranged in the middle and side of the top of the gas tank piston, and a laser emission component LSA and a laser emission component LSB are respectively arranged in the middle and side of the top of the gas tank. A computer is arranged outside the gas tank. When the device measures the torsion of the gas tank piston, laser light is projected to the machine vision component VIA and the machine vision component VIB through the laser emission component LSA and the laser emission component LSB as calibration light. The machine vision component VIA and the machine vision component VIB collect images of laser light spots on a laser target disk in real time, and transmit them to a computer outside the gas tank through an explosion-proof cable. The machine vision measurement software for torsion of the gas tank piston specially compiled in the computer fits and analyzes the image, obtains the real-time torsion of the gas tank piston during operation, generates a configuration screen of the online measurement system for torsion of the gas tank piston, displays the torsion in real time, and starts a controller and an alarm connected to the computer according to the process parameter requirements to control and sound and light alarm.

[0004] The inventors of the present application discovered that the machine vision components VIA and VIB in the above-mentioned existing gas tank piston torsion measurement device based on machine vision are arranged on the gas tank piston. When a failure occurs after long-term use, the staff need to enter the gas tank for maintenance, which is time-consuming and labor-intensive, and reduces the practical performance of the device. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a gas tank piston torsion measuring device, which has the characteristics of convenient and quick maintenance or overhaul, saving time and labor, and improving the practical performance of the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas tank piston torsion measuring device, comprising: a measuring shell, an inner connecting rod is rotatably connected to the middle of the bottom end of the measuring shell through a bearing, the top end of the inner connecting rod extends into the measuring shell and is connected to an encoder through a coupling, a torsion limiting mechanism is installed on the inner connecting rod located inside the measuring shell and below the encoder and the measuring shell, the bottom end of the inner connecting rod extends to the bottom of the measuring shell and is sleeved with an outer connecting rod, a movable limiting mechanism is installed between the inner connecting rod and the outer connecting rod, a measuring shell cover is arranged on the top of the measuring shell, the measuring shell cover is connected to the measuring shell by four fastening screws arranged at equal intervals along the circumferential direction, and the encoder is electrically connected to the gas tank control system.

[0007] Furthermore, the torsion limiting mechanism includes a gear fixedly sleeved on the inner connecting rod and located inside the measuring housing and below the encoder, a rack arranged in the measuring housing and meshing with the gear, and two fixed rods symmetrically fixed to the inner wall of the measuring housing along the center axis of the rack, and a movable mechanism is assembled between the rack and the measuring housing.

[0008] Furthermore, the movable mechanism includes a movable groove opened at the bottom end of the measuring shell and two movable blocks symmetrically fixed to the bottom end of the rack. A movable rod is fixed inside the movable groove, and the two movable blocks are movably connected to the movable rod by means of an open hole sleeve.

[0009] Furthermore, the movable limiting mechanism includes two movable limiting grooves symmetrically opened on the inner connecting rod extending to the rod below the measuring shell and two movable limiting blocks symmetrically fixed to the inner wall of the outer connecting rod, and the two movable limiting blocks extend into the two movable limiting grooves for movably connection.

[0010] Furthermore, it also includes: a gas cabinet, a piston is arranged inside the gas cabinet, a measuring shell is fixedly connected to the top of the gas cabinet, the distance between the rack and the fixed rod is the maximum torsion threshold point set for the piston, that is, when the rack abuts against the fixed rod and can no longer move, the piston is twisted to the maximum torsion setting value, the inner connecting rod penetrates the gas cabinet and extends to the inside of the gas cabinet and is located above the piston, the inner connecting rod is connected to the gas cabinet penetration section through a bearing, and the bottom end of the outer connecting rod is fixedly connected to the top of the piston.

[0011] Furthermore, a shock-absorbing damper is connected between the top of the movable limiting block and the top of the movable limiting groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The gas tank piston torsion measurement structure of the utility model device, that is, the encoder is located at the top of the gas tank, and the measuring shell cover and the measuring shell are connected by fastening screws. When maintaining or overhauling, only the fixing screws need to be removed to maintain or overhaul the encoder, which is convenient and fast, saves time and effort, and improves the practical performance of the device.

[0014] 2. A shock-absorbing damper is arranged between the inner connecting rod and the outer connecting rod of the utility model, which can absorb and consume the vibration energy transmitted from the piston to the outer connecting rod and then from the outer connecting rod to the inner connecting rod, thereby avoiding the problem of reduced encoder measurement accuracy caused by the vibration energy being transmitted from the inner connecting rod to the encoder, thereby ensuring the measurement accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a cross-sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the installation of the utility model;

[0019] In the figure: 1. measuring shell; 2. measuring shell cover; 3. fastening screws; 4. inner connecting rod; 5. outer connecting rod; 6. movable rod; 7. movable block; 8. movable groove; 9. rack; 10. fixed rod; 11. encoder; 12. gear; 13. shock absorber; 14. movable limit groove; 15. movable limit block; 16. piston; 17. gas cabinet. DETAILED DESCRIPTION

[0020] 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.

[0021] Embodiment 1

[0022] See also Figure 1-4The utility model provides the following technical solutions: a gas tank piston torsion measuring device, comprising: a measuring shell 1, an inner connecting rod 4 is rotatably connected to the middle of the bottom end of the measuring shell 1 through a bearing, the top end of the inner connecting rod 4 extends into the measuring shell 1 and is connected to an encoder 11 through a coupling, a torsion limiting mechanism is arranged on the inner connecting rod 4 between the measuring shell 1 and below the encoder 11 and the measuring shell 1, the bottom end of the inner connecting rod 4 extends to the bottom of the measuring shell 1 and is sleeved with an outer connecting rod 5, a movable limiting mechanism is arranged between the inner connecting rod 4 and the outer connecting rod 5, a measuring shell cover 2 is arranged at the top of the measuring shell 1, the measuring shell cover 2 is connected to the measuring shell 1 by four fastening screws 3 arranged at equal intervals along the circumferential direction, and the encoder 11 is electrically connected to the gas tank control system.

[0023] See attached Figure 1-4 When the gas tank piston torsion measuring device is working, if the gas tank piston 16 is twisted, the gas tank piston 16 drives the outer connecting rod 5 to twist in the same direction, and the outer connecting rod 5 drives the inner connecting rod 4 to twist in the same direction through the movable limiting mechanism, and the inner connecting rod 4 drives the encoder 11 and the torsion limiting mechanism to twist in the same direction. The encoder 11 of the same-direction twisting monitors the torsion angle of the inner connecting rod 4 in real time, that is, monitors the torsion angle of the gas tank piston 16 in real time, and transmits the data to the gas tank control system. The gas tank control system displays the torsion angle value of the gas tank piston 16 to achieve the torsion measurement of the gas tank piston 16. At the same time, the torsion limiting mechanism of the same-direction twisting cannot continue to twist after rotating to a certain extent, that is, the inner connecting rod 4 cannot continue to twist, that is, the gas tank piston 16 cannot twist. At this time, the torsion angle of the gas tank piston 16 is within the set range, which can avoid the problem of gas leakage in the gas tank caused by excessive torsion angle of the gas tank piston 16, thereby improving the safety of use;

[0024] Meanwhile, the encoder 11 and other torsion measurement structures are inside the measurement housing 1. By removing the four fastening screws 3 and taking off the measurement housing cover 2, the maintenance or repair of the torsion measurement structure can be carried out, which is convenient, fast, time-saving and labor-saving.

[0025] Specifically, the torsion limiting mechanism includes a gear 12 fixedly sleeved on the inner connecting rod 4, located inside the measuring housing 1 and below the encoder 11, a rack 9 arranged in the measuring housing 1 and meshing with the gear 12, and two fixed rods 10 symmetrically fixed to the inner wall of the measuring housing 1 along the central axis of the rack 9, and a movable mechanism is assembled between the rack 9 and the measuring housing 1.

[0026] See attached Figure 2The torsion limiting mechanism drives the gear 12 to rotate in the same direction through the twisted inner connecting rod 4. During the torsion of the gear 12, the rack 9 is driven to move until the rack 9 moves to abut against the moving side fixed rod 10, and the rack 9 can no longer move, that is, the gear 12 can no longer rotate, that is, the inner connecting rod 4 and the outer connecting rod 5 can no longer rotate, that is, the gas tank piston 16 can no longer rotate, which can ensure that the gas tank piston 16 is twisted within the set range.

[0027] Specifically, the movable mechanism includes a movable groove 8 opened at the bottom end of the measuring shell 1 and two movable blocks 7 symmetrically fixed to the bottom end of the rack 9. A movable rod 6 is fixed inside the movable groove 8, and the two movable blocks 7 are movably connected to the movable rod 6 by means of open hole sleeve connection.

[0028] See attached Figure 2 The movable mechanism realizes the movable function of the rack 9 by moving two movable blocks 7 on the movable rod 6.

[0029] Specifically, the movable limiting mechanism includes two movable limiting grooves 14 symmetrically opened on the inner connecting rod 4 extending to the rod below the measuring shell 1 and two movable limiting blocks 15 symmetrically fixed on the inner wall of the outer connecting rod 5. The two movable limiting blocks 15 extend into the two movable limiting grooves 14 for movably connection.

[0030] See attached Figure 3 The movable limiting mechanism realizes the limiting movement between the outer connecting rod 5 and the inner connecting rod 4 by extending two movable limiting blocks 15 into two movable limiting grooves 14, which neither affects the movable function between the outer connecting rod 5 and the inner connecting rod 4, nor affects the torsion driving function between the outer connecting rod 5 and the inner connecting rod 4.

[0031] Specifically, it also includes: a gas cabinet 17, a piston 16 is arranged inside the gas cabinet 17, the measuring shell 1 is fixedly connected to the top of the gas cabinet 17, the distance between the rack 9 and the fixed rod 10 is the maximum torsion threshold point set for the piston 16, that is, when the rack 9 abuts against the fixed rod 10 and cannot move any further, the piston 16 is twisted to the maximum torsion setting value, the inner connecting rod 4 penetrates the gas cabinet 17 and extends to the inside of the gas cabinet 17 and is located above the piston 16, the inner connecting rod 4 is connected to the through section of the gas cabinet 17 through a bearing, and the bottom end of the outer connecting rod 5 is fixedly connected to the top of the piston 16.

[0032] See attached Figure 4 The installation between the structures can realize the function of measuring the torsion of the measuring piston 16.

[0033] Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that:

[0035] Specifically, a shock absorbing damper 13 is connected between the top of the movable limiting block 15 and the top of the movable limiting groove 14 .

[0036] See attached Figure 3 The shock absorbing damper 13 can absorb and consume the vibration energy transmitted from the piston 16 to the outer connecting rod 5 and then from the outer connecting rod 5 to the inner connecting rod 4, and can avoid the problem that the vibration energy is transmitted from the inner connecting rod 4 to the encoder 11 and the measurement accuracy of the encoder 11 is reduced, thereby ensuring the measurement accuracy of the device.

[0037] The encoder 11 in the utility model is a conventional instrument, and its working principle, size and model are irrelevant to the function of the present application, so no further description is given. The control method of the utility model is controlled by a gas tank control system, and the control circuit of the gas tank control system can be realized by simple programming by technicians in this field, and the provision of power is also common knowledge in this field. In addition, the utility model is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the utility model.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Gas tank piston torsion measuring device, characterized in that: include: A measuring shell (1), wherein an inner connecting rod (4) is rotatably connected to the middle of the bottom end of the measuring shell (1) via a bearing, the top end of the inner connecting rod (4) extends into the measuring shell (1) and is connected to an encoder (11) via a coupling, a torsion limiting mechanism is arranged on the inner connecting rod (4) located inside the measuring shell (1) and below the encoder (11) and between the measuring shell (1), the bottom end of the inner connecting rod (4) extends below the measuring shell (1) and is sleeved with an outer connecting rod (5), a movable limiting mechanism is arranged between the inner connecting rod (4) and the outer connecting rod (5), a measuring shell cover (2) is arranged at the top end of the measuring shell (1), the measuring shell cover (2) and the measuring shell (1) are connected via four fastening screws (3) arranged at equal intervals along the circumferential direction, and the encoder (11) is electrically connected to a gas tank control system.

2. The gas tank piston torsion measuring device according to claim 1, characterized in that: The torsion limiting mechanism comprises a gear (12) fixedly sleeved on an inner connecting rod (4) and located inside a measuring housing (1) and below an encoder (11), a rack (9) arranged inside the measuring housing (1) and meshingly connected to the gear (12), and two fixed rods (10) symmetrically fixed to the inner wall of the measuring housing (1) along the central axis of the rack (9), and a movable mechanism is assembled between the rack (9) and the measuring housing (1).

3. The gas tank piston torsion measuring device according to claim 2, characterized in that: The movable mechanism comprises a movable groove (8) provided at the bottom end of the measuring housing (1) and two movable blocks (7) symmetrically fixed to the bottom end of the rack (9); a movable rod (6) is fixed inside the movable groove (8); and the two movable blocks (7) are movably connected to the movable rod (6) by means of an open hole sleeve connection.

4. The gas tank piston torsion measuring device according to claim 1, characterized in that: The movable limiting mechanism comprises two movable limiting grooves (14) symmetrically arranged on the inner connecting rod (4) and extending to the rod below the measuring housing (1), and two movable limiting blocks (15) symmetrically fixed to the inner wall of the outer connecting rod (5); the two movable limiting blocks (15) extend into the two movable limiting grooves (14) and are movably connected.

5. The gas tank piston torsion measuring device according to claim 2, characterized in that: Also includes: A gas cabinet (17) is provided with a piston (16) inside the gas cabinet (17), a measuring housing (1) is fixedly connected to the top of the gas cabinet (17), a spacing between a rack (9) and a fixed rod (10) is a maximum torsion threshold point set for the piston (16), that is, when the rack (9) abuts against the fixed rod (10) and cannot move any further, the piston (16) is twisted to the maximum torsion setting value, an inner connecting rod (4) penetrates the gas cabinet (17) and extends into the gas cabinet (17) and is located above the piston (16), the inner connecting rod (4) is connected to the through section of the gas cabinet (17) through a bearing, and the bottom end of the outer connecting rod (5) is fixedly connected to the top of the piston (16).

6. The gas tank piston torsion measuring device according to claim 4, characterized in that: A shock absorbing damper (13) is connected between the top end of the movable limiting block (15) and the top end of the movable limiting groove (14).

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