Perlite filling vibration method for low-temperature storage tank and adopted vibration device

Abstract

The invention relates to a low-temperature storage tank perlite filling vibration method and an adopted vibration device, which are characterized in that an operator holds an external control display terminal to stand outside an annular space of a storage tank and above the top of rock wool, and a vibration main body in an annular cavity is suspended above a track ring beam of the low-temperature storage tank; in the perlite filling operation process, the filling condition in the filling ring cavity is shot in real time through the camera device, a control instruction is input through the handheld operation display terminal, and the vibration device is controlled to fill the filled perlite in real time through the vibration rod. According to the device, the operation safety is improved, and vibration can be achieved while filling is conducted.

Description

Technical Field

[0001] The invention belongs to the technical field of cold-insulation construction of low-temperature storage tanks, and in particular relates to a perlite filling vibration method for low-temperature storage tanks and a vibration device used therein. Background Art

[0002] During the perlite cold insulation construction of low-temperature storage tanks, perlite is required to be filled in the annular cavity between the inner tank wall and the concrete outer tank for insulation. The perlite needs to be vibrated forcibly every 3 to 4 meters of expanded perlite to ensure the density of the perlite and prevent the contraction and expansion of the inner tank of the low-temperature storage tank from causing excessive settlement of the perlite and causing cold leakage.

[0003] The current method is that the expanded perlite enters the annular space of the storage tank through the gas-solid conveying system (gas and expanded perlite mixed conveying system) along the perlite conveying pipeline and the perlite filling port. Due to the limited annular space of the storage tank, the dust is serious during the expanded perlite filling process. After the expanded perlite is filled to a height of 3 to 4 meters, the filling of the expanded perlite needs to be stopped, and personnel enter the upper position of the annular space to operate the vibrator for vibration. In the whole process: first, the perlite filling needs to be stopped for vibration, which wastes the time of each layer of vibration; second, the vibration process is an edge operation, which is very prone to safety accidents. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a perlite filling vibration method for a low-temperature storage tank, which can improve the safety of the operation and realize filling and vibration at the same time, and a vibration device used therein.

[0005] One of the above objects of the present invention is achieved by the following technical solution:

[0006] A vibration device used in a perlite filling vibration method for a cryogenic storage tank, comprising a vibration main body in an annular cavity and an external control and display terminal; the vibration main body in the annular cavity comprises a walking mechanism, a lifting mechanism, a vibration reduction mechanism, a vibration mechanism, an electric control cabinet, a camera device, and a battery pack; the walking mechanism comprises two front and rear walking wheel groups with fixed spacing, the two walking wheel groups are wheel group structures driven by a motor, and the two walking wheel groups are mounted on the ring beam of a cryogenic storage tank track; the lifting mechanism is connected to the bottom of the two walking wheel groups, and adopts a retractable wire rope lifting structure, and the end piece of the lifting mechanism is a hoisting platform that can move up and down; the vibration reduction mechanism is composed of multiple groups of vibration reduction components, the upper ends of the multiple groups of vibration reduction components are vertically fixedly connected to the hoisting platform, and the lower ends of the multiple groups of vibration reduction components are vertically fixedly connected to the upper part of the vibration mechanism; the vibration mechanism adopts a multi-rod vibration mechanism;

[0007] A control system is installed in the electric control cabinet, and the control system communicates with an external control display terminal by wireless means; the electric control cabinet is installed under a set of follower wheels, and the follower wheels are movably installed on the ring beam of the low-temperature storage tank track and connected to a set of running wheels located at the rear through a connecting piece;

[0008] The camera device is installed at the upper end outside the electric control cabinet, and is used to shoot the operating status of the perlite automatic vibration device of the low-temperature storage tank, and communicate with the external control display terminal by wireless means;

[0009] The battery pack is integrated into the electric control cabinet or installed under another set of follower wheel groups, which are installed on the ring beam of the low-temperature storage tank track and connected to a set of follower wheel groups located in the front through a connecting piece;

[0010] The operation display terminal outside the annular cavity is used to display the operating status of the vibration device in the annular space of the storage tank and input control instructions.

[0011] Moreover, the lifting mechanism includes a hoist, a first wire reel, two limit switches, a wire rope, two fixed pulleys, and a gravity sensor; the hoist is installed below a set of traveling wheel groups, one end of the wire rope passes through the hoist and is fixedly connected to the first wire reel, the wire rope is wound around the front and rear fixed pulleys, the other end of the wire rope is fixedly connected to the other set of traveling wheel groups, and a gravity sensor is installed on the wire rope near the bottom of the other set of traveling wheel groups; the two limit switches are respectively installed on the wire rope near the two ends; the two fixed pulleys are installed on the same lifting platform located below through their respective wheel seats.

[0012] Moreover, the vibration reduction assembly comprises a vibration reduction sleeve, a vibration reduction pull rod and a compression spring pressed between the vibration reduction sleeve and the vibration reduction pull rod.

[0013] Moreover, the vibration mechanism includes a vibration motor, a vibration rod, a vibration mounting plate, a second rope reel, a wire arrangement device, and a power supply cable; both ends of the vibration mounting plate are fixedly connected to the lower end of the vibration reduction assembly, the vibration motor is fixedly mounted on the upper end of the vibration mounting plate, and a row of vibration rods are fixedly mounted vertically downward on the vibration mounting plate. One end of the power supply cable is fixed on the second rope reel after passing through the wire arrangement device, and the other end of the power supply cable forms a power supply connection with the vibration motor.

[0014] The second objective of the present invention is achieved by the following technical solutions:

[0015] A perlite filling vibration method for a cryogenic storage tank adopts the above-mentioned vibration device, and the method is characterized in that: an operator holds an external control display terminal and stands above the top of the rock wool outside the annular space of the storage tank, and the vibration body in the annular cavity is suspended above the ring beam of the cryogenic storage tank track; during the perlite filling operation, the filling status in the filling annular cavity is photographed in real time by a camera device, and control instructions are input through the handheld operation display terminal to control the vibration device to fill the filled perlite in real time through the vibration rod.

[0016] The advantages and positive effects of the present invention are:

[0017] The present invention installs a camera device above the electric control cabinet in the annular space to be filled, and sets an external control display terminal. The external control display terminal communicates with the camera device and the control system by wireless means, so that the operator can obtain the operating status of the vibration device in the annular space of the storage tank and input control instructions in time through the control display terminal outside the annular space to be filled, and control the working state of the vibration device. Compared with the existing method in which the operator needs to enter the annular space to perform the operation, the operation near the edge is avoided, and the safety of the operation is improved. In addition, the influence of dust during the filling operation is avoided, and the filling and vibration can be realized, which greatly improves the efficiency of the filling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a cryogenic storage tank involved in the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the perlite filling vibration device for a low-temperature storage tank of the present invention;

[0020] Figure 3 It is a schematic diagram comparing the standing position of an operator when using an existing vibration device to perform operations and the standing position of an operator when using the vibration device of the present invention to perform operations. DETAILED DESCRIPTION

[0021] The structure of the present invention is further described below with reference to the accompanying drawings and by way of examples. It should be noted that the present examples are descriptive rather than restrictive.

[0022] A vibration device used in the automatic vibration method of perlite in a cryogenic storage tank, see Figure 2 and Figure 3 , mainly including the vibration body in the ring cavity and the external control and display terminal.

[0023] The vibrating body in the annular cavity includes a walking mechanism, a lifting mechanism 7 , a vibration reduction mechanism 8 , a vibration mechanism 9 , an electric control cabinet 6 , a camera device 3 , and a battery pack 5 .

[0024] The traveling mechanism comprises two front and rear traveling wheel groups 2, the two traveling wheel groups are wheel group structures driven by motors, the two traveling wheel groups are mounted on the low-temperature storage tank track ring beam 1, and move on the ring beam with a set fixed indirection.

[0025] The lifting mechanism is connected to the bottom of two sets of running wheel groups, and adopts a retractable wire rope lifting structure, which mainly includes a hoist 7.1, a first wire reel 7.2, two limiters 7.7, a wire rope 7.3, two fixed pulleys 7.5, and a gravity sensor 7.6. The hoist is installed below a set of running wheel groups. One end of the wire rope passes through the hoist and is fixedly connected to the first wire reel. The wire rope is wound around the front and rear fixed pulleys. The other end of the wire rope is fixedly connected to another set of running wheel groups. A gravity sensor is installed on the wire rope near the bottom of the other set of running wheel groups. The two limiters are respectively installed on the wire rope near the two ends. The two fixed pulleys are installed on the same lifting platform located below through their respective wheel seats 7.4. The rope is wound or released through the coordinated movement of the hoist and the first wire reel, thereby realizing the rise and fall of the lifting platform.

[0026] The vibration reduction mechanism is composed of multiple groups of vibration reduction components, the upper ends of the multiple groups of vibration reduction components are vertically fixedly connected to the hoisting platform, and the lower ends of the multiple groups of vibration reduction components are vertically fixedly connected to the upper part of the vibration mechanism. The vibration reduction mechanism is used to isolate the vibration of the vibration mechanism to prevent the vibration from being transmitted to the lifting mechanism above. The vibration reduction component can be composed of a vibration reduction sleeve, a vibration reduction rod, and a compression spring pressed between the vibration reduction sleeve and the vibration reduction rod, and the vibration capacity is absorbed by the deformation of the compression spring.

[0027] The vibration mechanism adopts a multi-rod vibration mechanism, which mainly includes a vibration motor 9.3, a vibration rod 9.5, a vibration mounting plate 9.4, a second rope reel 9.1, a cable arrangement device 9.2, and a power supply cable.

[0028] Both ends of the vibration mounting plate are fixedly connected to the lower end of the vibration reduction assembly, a vibration motor is fixedly installed on the upper end of the vibration mounting plate, a row of vibration rods are fixedly installed vertically downward on the vibration mounting plate, one end of the power supply cable is fixed on the second rope reel after passing through a cable arranger, and the other end of the power supply cable forms a power supply connection with the vibration motor.

[0029] The electric control cabinet is equipped with a control system for controlling the working process of the vibration device, and the control system communicates with the external control display terminal by wireless. The electric control cabinet is installed under a set of follower wheels 4, which are movably installed on the ring beam of the low-temperature storage tank track and connected to a set of walking wheels at the rear through a connector.

[0030] The camera device is installed at the upper end outside the electric control cabinet to capture the operating status of the automatic vibration device of perlite in the low-temperature storage tank and communicate with the external control display terminal wirelessly. The camera device protection level is IP66 dustproof and waterproof camera.

[0031] The battery pack can be integrated into the electric control cabinet, or installed under another set of follower wheels, which are also installed on the ring beam of the cryogenic tank track and connected to the front set of follower wheels through a connecting piece (such as a connecting rod, etc.). The battery pack is used to provide power to the vibration device.

[0032] The operation and display terminal outside the annular cavity communicates with the camera device and the control system in a wireless manner, is used to input control instructions to the control system, and can display the operating status of the vibration device in the annular space of the storage tank.

[0033] The vibration control method based on the automatic vibration device of perlite in the low-temperature storage tank is as follows:

[0034] The operator holds an external control display terminal and stands outside the annular space of the storage tank above the top of the rock wool. The vibration body in the annular cavity is suspended above the ring beam of the low-temperature storage tank track. During the perlite filling operation, the filling status in the filling annular cavity is photographed in real time by a camera device, and control instructions are input through the handheld external control display terminal to control the vibration device to fill the filled perlite in real time through the vibration rod.

[0035] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A vibration device used in a perlite filling vibration method for a cryogenic storage tank, characterized in that: It includes a vibration body in the ring cavity and an external control and display terminal; the vibration body in the ring cavity includes a walking mechanism, a lifting mechanism, a vibration reduction mechanism, a vibration mechanism, an electric control cabinet, a camera device, and a battery pack; the walking mechanism includes two front and rear sets of walking wheel groups with fixed spacing, the two sets of walking wheel groups are wheel group structures driven by motors, and the two sets of walking wheel groups are mounted on the ring beam of the low-temperature storage tank track; the lifting mechanism is connected to the bottom of the two sets of walking wheel groups, and adopts a retractable wire rope lifting structure, and the end piece of the lifting mechanism is a lifting platform that can move up and down; the vibration reduction mechanism is composed of multiple sets of vibration reduction components, the upper ends of the multiple sets of vibration reduction components are vertically fixedly connected to the lifting platform, and the lower ends of the multiple sets of vibration reduction components are vertically fixedly connected to the upper part of the vibration mechanism; the vibration mechanism adopts a multi-rod vibration mechanism; A control system is installed in the electric control cabinet, and the control system communicates with an external control display terminal by wireless means; the electric control cabinet is installed under a set of follower wheels, and the follower wheels are movably installed on the ring beam of the low-temperature storage tank track and connected to a set of running wheels located at the rear through a connecting piece; The camera device is installed at the upper end outside the electric control cabinet, and is used to shoot the operating status of the perlite automatic vibration device of the low-temperature storage tank, and communicate with the external control display terminal by wireless means; The battery pack is integrated into the electric control cabinet or installed under another set of follower wheel groups, which are installed on the ring beam of the low-temperature storage tank track and connected to a set of follower wheel groups located in the front through a connecting piece; The operation display terminal outside the annular cavity is used to display the operating status of the vibration device in the annular space of the storage tank and input control instructions.

2. The vibration device used in the perlite filling vibration method for a cryogenic storage tank according to claim 1 is characterized in that: The lifting mechanism includes a hoist, a first wire reel, two limiters, a wire rope, two fixed pulleys, and a gravity sensor; the hoist is installed below a set of traveling wheel groups, one end of the wire rope passes through the hoist and is fixedly connected to the first wire reel, the wire rope is wound around the front and rear fixed pulleys, the other end of the wire rope is fixedly connected to the other set of traveling wheel groups, and a gravity sensor is installed on the wire rope near the bottom of the other set of traveling wheel groups; the two limiters are respectively installed on the wire rope near the two ends; the two fixed pulleys are installed on the same lifting platform located below through their respective wheel seats.

3. The vibration device used in the perlite filling vibration method for a cryogenic storage tank according to claim 1 is characterized in that: The vibration reduction assembly comprises a vibration reduction sleeve, a vibration reduction pull rod and a compression spring pressed between the vibration reduction sleeve and the vibration reduction pull rod.

4. The vibration device used in the perlite filling vibration method for a cryogenic storage tank according to claim 1 is characterized in that: The vibration mechanism includes a vibration motor, a vibration rod, a vibration mounting plate, a second rope reel, a wire arrangement device, and a power supply cable; both ends of the vibration mounting plate are fixedly connected to the lower end of the vibration reduction assembly, the vibration motor is fixedly mounted on the upper end of the vibration mounting plate, a row of vibration rods are fixedly mounted vertically downward on the vibration mounting plate, one end of the power supply cable is fixed on the second rope reel after passing through the wire arrangement device, and the other end of the power supply cable forms a power supply connection with the vibration motor.

5. A vibration method of a vibration device used in the perlite filling vibration method for a cryogenic storage tank according to any one of claims 1 to 4, characterized in that: The operator holds an external control display terminal and stands outside the annular space of the storage tank, above the top of the rock wool. The vibration body in the annular cavity is suspended above the ring beam of the low-temperature storage tank track. During the perlite filling operation, the filling status in the filling annular cavity is photographed in real time by a camera device, and control instructions are input through the handheld operation display terminal to control the vibration device to fill the filled perlite in real time through the vibration rod.

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