A device and method for measuring the level of a vessel

Abstract

The application discloses a converter liquid level measuring device and method, and belongs to the technical field of converter liquid level measurement. The application comprises a base plate, the upper end of the base plate is provided with a base, the top of the base is provided with a main cross arm, the lower part of the main cross arm is provided with a telescopic air cylinder; the telescopic end of the telescopic air cylinder is connected with a protective cover, the inside of the protective cover is symmetrically provided with a radar range finder; the front part of the base plate is symmetrically provided with two lifting air cylinders, the upper end of the lifting air cylinder is rotationally connected with the main cross arm. The main cross arm is driven to ascend and lock by the lifting air cylinder and the locking air cylinder, the protective cover and the radar range finder are driven to telescope by the telescopic air cylinder and the measuring task is completed, the radar range finder automatically implements the liquid level measuring action, the whole measuring period is short, the liquid level measuring frequency can be improved, the production efficiency is improved, the measurement does not need to be manually performed, the personnel risk can be reduced, the safety is ensured, and the liquid level height measuring accuracy of the converter is significantly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid level measurement of converter, more particularly, to a device and method for measuring liquid level of converter. BACKGROUND

[0002] Converter generally refers to a cylindrical oxygen blowing steelmaking container that can be tilted, and is a kind of steelmaking furnace. The furnace body is cylindrical and is supported on a horizontal shaft frame and can be rotated. It is also used for copper smelting.

[0003] Currently, there are two methods for measuring the liquid level of the converter. One is to use a sub-lance to measure the liquid level. This method has a high one-time investment cost of the sub-lance and is limited by the space of the converter workshop. Many small converters do not have the conditions to install a sub-lance. The second method is to use a liquid level measuring rod to measure the liquid level. This method is time-consuming and labor-intensive, and requires personnel to carry the measuring rod to the oxygen lance nitrogen seal operation on the high-level platform of the converter. Personnel are involved in the coal gas area, which is prone to high-altitude falling and has safety risks.

[0004] Therefore, we designed a device and method for measuring the liquid level of the converter to solve the problems of the prior art. SUMMARY

[0005] 1. Technical problems to be solved by the present application

[0006] In view of the defects and deficiencies of the prior art, the present application provides a device and method for measuring the liquid level of the converter. The main horizontal arm is lifted and locked by the lifting cylinder and locking cylinder to lift and lock. The protection cover and radar range finder are driven by the telescopic cylinder to extend and retract and complete the measurement task. The radar range finder automatically performs the liquid level measurement action. The whole measurement cycle is short, the liquid level measurement frequency can be improved, the production efficiency is improved, manual measurement is not required, the personnel risk can be reduced, the accuracy can be improved, the safety can be ensured, the labor cost and material cost can be reduced, the labor cost and material cost can be saved forever, and the accuracy of the liquid level height measurement of the converter is significantly improved.

[0007] 2. Technical solutions

[0008] To achieve the above-mentioned purpose, the technical solutions provided by the present application are as follows:

[0009] The device for measuring the liquid level of the converter comprises a bottom plate, a base is installed at the upper end of the bottom plate, a main horizontal arm is arranged at the top of the base, the main horizontal arm is rotationally connected with the base through a hinge seat, and a telescopic cylinder is installed below the main horizontal arm.

[0010] The telescopic end of the telescopic cylinder is connected with a protection cover, and a radar range finder is symmetrically arranged inside the protection cover.

[0011] Two lifting cylinders are symmetrically arranged at the front of the bottom plate, and the upper end of the lifting cylinder is rotationally connected with the main horizontal arm.

[0012] Further, the bottom plate is fixed on the ground by bolts.

[0013] Further, the upper end of the main cross arm is fixedly connected with a locking plate, the rear end of the locking plate is provided with a through hole, the top of the base is further provided with a locking cylinder, the locking cylinder is fixedly installed on the base through an L-shaped fixing frame, the extending end of the locking cylinder is provided with a fixing seat, a lock hole is formed in the seat body of the fixing seat, and the extending end of the locking cylinder can be inserted into the lock hole when the extending end is elongated.

[0014] Further, a gap is arranged between the locking cylinder and the fixing seat, when the main cross arm rotates upward, the end of the locking plate enters the gap, when the main cross arm is in the vertical state, the extending end of the locking cylinder is elongated, passes through the through hole of the locking plate and enters the lock hole of the fixing seat, so that the main cross arm is kept in the vertical state.

[0015] Further, the rear upper end of the base is provided with an anti-collision device, the anti-collision device comprises a support rod, a sliding rod one, a sliding rod two, a spring, a roller seat, a roller and a reinforcing plate, the lower end of the support rod is fixedly connected with the bottom plate, the upper end of the support rod is provided with the sliding rod one and the sliding rod two, one end of the sliding rod one and the sliding rod two are fixedly connected with the roller seat, the roller seat is rotatably provided with the roller, the spring is sleeved on the rod body of the sliding rod one, and the reinforcing plate is fixedly connected on one side of the support rod close to the roller.

[0016] Further, the sliding rod one and the sliding rod two penetrate the reinforcing plate and the support rod in sequence and are respectively in sliding connection with the support rod.

[0017] Further, a plurality of brackets are arranged on the main cross arm, the lower end of the bracket is provided with a high-temperature sleeve, the end of the high-temperature sleeve is inserted into the protective cover, and the high-temperature sleeve is used for wiring.

[0018] Further, a support frame is welded on the middle part of the main cross arm, when the main cross arm is lowered to a certain height, the support frame is used for supporting the main cross arm on the ground.

[0019] Further, the front end of the protective cover horizontally extends to the converter port, and the oxygen lance head is arranged at the upper end of the converter port.

[0020] A method for measuring the liquid level of a converter, comprising the following steps:

[0021] First, the locking cylinder is controlled to contract, the locking state of the main cross arm is released, then the lifting cylinder is contracted, the main cross arm in the vertical state is rotated downward, after the main cross arm is detected to be lowered in place by the detection sensing device, the telescopic cylinder receives the instruction to elongate, drives the protective cover and the radar range finder to move forward, and when the radar range finder is stretched to the predetermined position, the radar range finder starts to work.

[0022] The radar range finder at the lower end of the protective cover detects the height data of the liquid level, the radar range finder at the upper end of the protective cover detects the distance data of the oxygen lance head, and transmits the two sets of detection data to the controller;

[0023] After the detection is completed, the telescopic cylinder is contracted, the lifting cylinder is elongated, the main cross arm is turned from a horizontal state to a vertical state, and then the locking cylinder is elongated to lock the main cross arm on the base;

[0024] The controller calculates the descending height of the oxygen lance head according to the two sets of distance data, and controls the oxygen lance head to perform the descending action.

[0025] 3. Beneficial effects

[0026] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0027] The lifting cylinder and the locking cylinder are used to drive the main cross arm to ascend and descend and to be locked, the telescopic cylinder is used to drive the protective cover and the radar range finder to telescope and complete the measurement task, the radar range finder automatically performs the liquid level measurement, the whole measurement period is short, the liquid level measurement frequency can be improved, the production efficiency is improved, manual measurement is not needed, the personnel risk can be reduced, the accuracy can be improved, the safety can be ensured, the labor cost and the material cost can be saved, and the liquid level height measurement accuracy of the converter is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0029] Figure 2 is a schematic diagram of the rear three-dimensional structure of the present application;

[0030] Figure 3 is a top oblique view of the present application;

[0031] Figure 4 is Figure 3 is an enlarged structural schematic diagram of A in the middle;

[0032] Figure 5 is a schematic diagram of the three-dimensional structure of the anti-collision device of the present application.

[0033] The reference signs are explained as follows: 1, bottom plate; 2, lifting cylinder; 3, telescopic cylinder; 4, main cross arm; 5, support frame; 6, protective cover; 7, locking cylinder; 8, locking plate; 9, anti-collision device; 10, base; 11, oxygen lance head; 12, converter port; 13, high-temperature sleeve; 14, bracket; 41, hinged seat; 71, fixed seat; 72, L-shaped fixed frame; 81, through hole; 91, support rod; 92, sliding rod one; 93, sliding rod two; 94, spring; 95, roller seat; 96, roller; 97, reinforcing plate. DETAILED DESCRIPTION

[0034] The application will be further described below in conjunction with the drawings and embodiments:

[0035] Embodiment 1

[0036] From Figures 1-5 It can be seen that the liquid level measuring device for converter of the embodiment comprises a bottom plate 1 fixed on the ground by bolts, a base 10 installed at the upper end of the bottom plate 1, a main cross arm 4 provided at the top of the base 10 and rotationally connected with the base 10 through a hinge seat 41, and a telescopic cylinder 3 installed below the main cross arm 4.

[0037] The telescopic end of the telescopic cylinder 3 is connected with a protective cover 6, and the inside of the protective cover 6 is symmetrically provided with a radar range finder.

[0038] The front part of the bottom plate 1 is symmetrically provided with two lifting cylinders 2, and the upper end of each lifting cylinder 2 is rotationally connected with the main cross arm 4.

[0039] The upper end of the main cross arm 4 is fixedly connected with a locking plate 8, the rear end of the locking plate 8 is provided with a through hole 81, the top of the base 10 is further provided with a locking cylinder 7, the locking cylinder 7 is fixedly installed on the base 10 through an L-shaped fixing frame 72, the protruding end of the locking cylinder 7 is provided with a fixing seat 71, a locking hole is formed in the seat body of the fixing seat 71, and the protruding end of the locking cylinder 7 can be inserted into the locking hole when it is elongated.

[0040] A gap is provided between the locking cylinder 7 and the fixing seat 71, when the main cross arm 4 is rotated upward, the end part of the locking plate 8 enters the gap, when the main cross arm 4 is in a vertical state, the protruding end of the locking cylinder 7 is protruded, passes through the through hole 81 of the locking plate 8 and enters the locking hole of the fixing seat 71, so that the main cross arm 4 is kept in a vertical state.

[0041] The rear part of the upper end of the base 10 is provided with an anti-collision device 9, the anti-collision device 9 comprises a supporting rod 91, a sliding rod one 92, a sliding rod two 93, a spring 94, a roller seat 95, a roller 96 and a reinforcing plate 97, the lower end of the supporting rod 91 is fixedly connected with the bottom plate 1, the upper end of the supporting rod 91 is provided with the sliding rod one 92 and the sliding rod two 93, one end of the sliding rod one 92 and the sliding rod two 93 are fixedly connected with the roller seat 95, the roller seat 95 is rotationally provided with the roller 96, the spring 94 is sleeved on the rod body of the sliding rod one 92, and the reinforcing plate 97 is fixedly connected with the side of the supporting rod 91 close to the roller 96.

[0042] The sliding rod one 92 and the sliding rod two 93 pass through the reinforcing plate 97 and the supporting rod 91 in sequence and are respectively in sliding connection with the supporting rod 91.

[0043] A plurality of brackets 14 are provided on the main cross arm 4, the lower end of each bracket 14 is provided with a high-temperature sleeve 13, the end part of each high-temperature sleeve 13 is inserted into the protective cover 6, and the inside of each high-temperature sleeve 13 is used for wiring.

[0044] The middle part of the main cross arm 4 is welded with a support frame 5, which is used to support the main cross arm 4 on the ground when the main cross arm 4 is lowered to a certain height.

[0045] The front end of the protective cover 6 horizontally extends to the converter mouth 12, and the upper end of the converter mouth 12 is provided with an oxygen lance head 11.

[0046] A method for measuring the liquid level of a converter comprises the following steps:

[0047] First, the locking cylinder 7 is controlled to contract, and the locking state of the main cross arm 4 is released, then the lifting cylinder 2 is controlled to contract, and the main cross arm 4 originally in a vertical state is rotated downward, after the main cross arm 4 is detected to be lowered to a position by a detection sensor device, the telescopic cylinder 3 receives an instruction to extend, and drives the protective cover 6 and the radar range finder to move forward, and when the protective cover 6 and the radar range finder reach a predetermined position, the radar range finder starts to work;

[0048] The radar range finder at the lower end of the protective cover 6 detects the height data of the liquid level, the radar range finder at the upper end of the protective cover 6 detects the distance data of the oxygen lance head 11, and the two groups of detection data are transmitted to a controller;

[0049] After the detection is completed, the telescopic cylinder 3 is controlled to contract, the lifting cylinder 2 is controlled to extend, so that the main cross arm 4 is rotated from a horizontal state to a vertical state, and then the locking cylinder 7 is controlled to extend, so that the main cross arm 4 is locked on the base 10;

[0050] The controller calculates the lowering height of the oxygen lance head 11 according to the two groups of distance data, and controls the oxygen lance head 11 to perform a lowering action.

[0051] In the present application, the radar range finder is driven by the main cross arm 4 to automatically perform a liquid level measurement action, manual measurement is not needed, personnel risk can be reduced, accuracy can be improved, safety can be ensured, labor cost and material cost can be saved, liquid level can be more accurately controlled, the whole measurement period is 10 seconds, the liquid level measurement frequency can be improved, and production efficiency can be improved.

[0052] In the present application, the main cross arm 4 is driven by the lifting cylinder 2 and the locking cylinder 7 to perform lifting and locking, the protective cover 6 and the radar range finder are driven by the telescopic cylinder 3 to perform telescopic movement and complete a measurement task, the whole measurement period is 10 seconds, the liquid level measurement frequency can be improved, production efficiency can be improved, manual operation is not needed, and safety is high;

[0053] The height data of the liquid level is detected by the radar range finder at the lower end, the distance data of the oxygen lance head 11 is detected by the radar range finder at the upper end, and the two groups of detection data are transmitted to the controller, the controller calculates the lowering height of the oxygen lance head 11 according to the two groups of distance data, and controls the oxygen lance head 11 to perform a lowering action, so that the liquid level measurement accuracy of the converter is improved, and liquid level can be more accurately controlled.

[0054] The above description of the application and its embodiments is illustrative and not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it, without departing from the purpose of the application, similar structural modes and embodiments can be designed without creativity, which should belong to the protection scope of the application.

Claims

1. A device for measuring the liquid level of a converter, comprising a bottom plate (1), characterized in that: A base (10) is installed at the upper end of the bottom plate (1), a main cross arm (4) is provided on the top of the base (10), the main cross arm (4) is rotatably connected to the base (10) through a hinge seat (41), and a telescopic cylinder (3) is installed below the main cross arm (4); The telescopic end of the telescopic cylinder (3) is connected to a protective cover (6), and a radar rangefinder is symmetrically arranged in the upper and lower parts of the protective cover (6); Two lifting cylinders (2) are symmetrically provided at the front of the base plate (1), and the upper ends of the lifting cylinders (2) are rotatably connected to the main cross arm (4); The rear portion of the upper end of the base (10) is provided with an anti-collision device (9), and the anti-collision device (9) includes a support rod (91), a slide rod 1 (92), a slide rod 2 (93), a spring (94), a roller seat (95), a roller (96) and a reinforcement plate (97). The lower end of the support rod (91) is fixedly connected to the bottom plate (1), and the upper end of the support rod (91) is provided with a slide rod 1 (92) and a slide rod 2 (93); one end of the slide rod 1 (92) and the slide rod 2 (93) are fixedly connected to the roller seat (95), and the roller (96) is rotatably provided on the roller seat (95); the rod body of the slide rod 1 (92) is provided with a spring (94), and the side of the support rod (91) adjacent to the roller (96) is fixedly connected to the reinforcement plate (97).

2. The device for measuring the liquid level of a converter according to claim 1, characterized in that: The base plate (1) is fixed to the ground by bolts.

3. The device for measuring the liquid level of a converter according to claim 1, characterized in that: The upper end of the main cross arm (4) is fixedly connected to a locking plate (8), and the rear end of the locking plate (8) is provided with a through hole (81). The top of the base (10) is also provided with a locking cylinder (7), and the locking cylinder (7) is fixedly mounted on the base (10) through an L-shaped fixing frame (72). A fixing seat (71) is provided on one side of the protruding end of the locking cylinder (7), and a locking hole is opened on the base body of the fixing seat (71). The protruding end of the locking cylinder (7) can be inserted into the locking hole when it is extended.

4. The device for measuring the liquid level of a converter according to claim 3, characterized in that: A gap is provided between the locking cylinder (7) and the fixing seat (71). When the main cross arm (4) rotates upward, the end of the locking plate (8) enters the gap. When the main cross arm (4) is in a vertical state, the extended end of the locking cylinder (7) extends out, passes through the through hole (81) of the locking plate (8) and enters the locking hole of the fixing seat (71), thereby keeping the main cross arm (4) in a vertical state.

5. The device for measuring the liquid level of a converter according to claim 4, characterized in that: The sliding rod 1 (92) and the sliding rod 2 (93) sequentially pass through the reinforcing plate (97) and the support rod (91) and are respectively slidably connected to the support rod (91).

6. The device for measuring the liquid level of a converter according to claim 5, characterized in that: The main cross arm (4) is provided with a plurality of brackets (14), the lower end of the bracket (14) is provided with a high-temperature sleeve (13), the end of the high-temperature sleeve (13) is inserted into the protective cover (6), and the interior of the high-temperature sleeve (13) is used for wiring.

7. The device for measuring the liquid level of a converter according to claim 6, characterized in that: A support frame (5) is welded to the middle of the main cross arm (4). When the main cross arm (4) is lowered to a certain height, the support frame (5) is used to support the main cross arm (4) on the ground.

8. The device for measuring the liquid level of a converter according to claim 7, characterized in that: The front end of the protective cover (6) extends horizontally toward the converter port (12), and an oxygen lance head (11) is provided at the upper end of the converter port (12).

9. A method for measuring the liquid level of a converter, comprising the device for measuring the liquid level of a converter according to claim 8, characterized in that: The steps are: First, the locking cylinder (7) is controlled to retract to release the locking state of the main cross arm (4), and then the lifting cylinder (2) is retracted to rotate the main cross arm (4) which was originally in a vertical state downward. After the detection sensor device detects that the main cross arm (4) has fallen into place, the telescopic cylinder (3) receives the command to extend, driving the protective cover (6) and the radar rangefinder to move forward. When they are extended to the predetermined position, the radar rangefinder starts to work. The radar rangefinder at the lower end of the protective cover (6) detects height data from the liquid surface, and the radar rangefinder at the upper end of the protective cover (6) detects distance data from the oxygen gun head (11), and transmits the two sets of detection data to the controller; After the test is completed, the telescopic cylinder (3) contracts and the lifting cylinder (2) extends, so that the main cross arm (4) is turned from a horizontal state to a vertical state, and then the locking cylinder (7) extends to lock the main cross arm (4) on the base (10); The controller calculates the descending height of the oxygen lance head (11) based on the two sets of detected distance data, and controls the oxygen lance head (11) to perform a descending action.

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