Blast furnace mud gun plugging mud ramming amount measuring system

Abstract

The invention provides a blast furnace mud gun plugging mud ramming amount measuring system which comprises a pipeline used for conveying stemming and two sets of ultrasonic sensors installed on the pipeline, each set of ultrasonic sensors comprises an emitter and a receiver, and the two sets of ultrasonic sensors are symmetrically arranged on the two sides of the pipeline in a crossed mode. Wherein the transmitter and the receiver respectively comprise a body and a terminal connected with the body, one end of the body deviating from the terminal is a working end, the working end transmits or receives ultrasonic rays, the working end is fixed on the outer wall of the pipeline, a filling cavity is arranged between the working end and the outer wall of the pipeline, and the filling cavity is filled with a coupling agent. A filling cavity is formed in the contact surface of the ultrasonic sensor and the outer wall of the pipeline, and the filling cavity is filled with a coupling agent, so that the energy loss can be reduced, the measurement deviation is reduced, and the accuracy of the stemming amount is further improved; the problem of low accuracy possibly caused by a contact gap between an ultrasonic sensor and a pipeline in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace mud gun plugging auxiliary equipment, in particular to a blast furnace mud gun plugging mud amount measurement system. Background Art

[0002] Blast furnace mud guns are used to press mud into the blast furnace taphole. During this process, the amount of mud pressed in must be controlled to avoid over- or under-injection. In the prior art, the amount of mud pressed in is typically measured manually, specifically mechanically, by observing the travel of a pointer on the taphole machine to estimate the depth of mud pressed in. However, due to significant variability between operators, this can lead to significant variation in the amount of mud pressed in. Sensors can also be used to assist in measuring the amount of mud pressed in. For example, ultrasonic sensors can be installed on the pipes that transport the mud to measure the speed of mud pressed in, which is then converted into the amount of mud pressed in. This approach can achieve higher accuracy than manual observation. However, ultrasonic sensors are typically mounted on the outer wall of the pipe, which inevitably creates a contact gap between the sensor and the outer wall. The ultrasonic wave passes through this contact gap after passing through the pipe wall (or vice versa), resulting in energy loss and potential measurement errors, leading to still-low accuracy. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a blast furnace mud gun plugging mud amount measurement system, which solves the problem in the prior art that the contact gap between the ultrasonic sensor and the pipeline may lead to low accuracy.

[0004] According to an embodiment of the present invention, a system for measuring the amount of mud produced by a blast furnace mud gun plugging operation includes a pipeline for conveying gun mud, and two groups of ultrasonic sensors installed on the pipeline, each group of ultrasonic sensors including a transmitter and a receiver, and the two groups of ultrasonic sensors are cross-symmetrically arranged on both sides of the pipeline, wherein the transmitter and the receiver each include a body and a terminal connected to the body, the end of the body facing away from the terminal being a working end, the working end emitting or receiving ultrasonic rays, the working end being fixed to the outer wall of the pipeline and having a filling cavity between it and the outer wall of the pipeline, the filling cavity being filled with a coupling agent. A filling cavity is provided at the contact surface between the ultrasonic sensor and the outer wall of the pipeline, and the filling cavity is filled with a coupling agent, which can reduce energy loss, thereby reducing measurement deviation, further improving the accuracy of the gun mud amount, and solving the problem in the prior art that the contact gap between the ultrasonic sensor and the pipeline may lead to low accuracy.

[0005] Furthermore, the main body is fixedly connected to a mounting plate, the mounting plate is fixedly connected to the outer wall of the pipeline, and the filling cavity is arranged in the mounting plate.

[0006] Furthermore, the mounting plate is provided with an injection hole and a discharge hole connected to the filling cavity, and the injection hole and the discharge hole are respectively detachably connected to a blocking rod.

[0007] Furthermore, a pipe sleeve is fixedly connected to the mounting plate and surrounds the injection hole and the outlet hole respectively. The sealing rod includes a first connecting section and a second connecting section. The first connecting section is threadedly connected to the injection hole and the outlet hole, and the second connecting section is threadedly connected to the pipe sleeve.

[0008] Furthermore, the second connecting section is also fixedly connected to a rotating section located outside the pipe sleeve.

[0009] Furthermore, an annular contact surface is provided between the rotating section and the sleeve.

[0010] Furthermore, a balancing hole communicating with the inside and outside of the pipe sleeve is provided on the pipe sleeve.

[0011] Furthermore, the first connecting segment and the second connecting segment are respectively provided with a first spiral and a second spiral, the first spiral extends from one end of the first connecting segment to the other end, and the second spiral extends from an end close to the first spiral to the balancing hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting a filling cavity between the outer wall of the pipe and the ultrasonic sensor and filling the filling cavity with coupling agent, energy loss can be reduced, thereby reducing measurement deviation and further improving the accuracy of the gun mud amount, solving the problem in the existing technology that the contact gap between the ultrasonic sensor and the pipe may lead to low accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0015] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at center A;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point B in the middle;

[0017] In the above drawings:

[0018] Pipeline 1, transmitter 2, receiver 3, body 4, terminal 5, filling cavity 6, mounting plate 7, blocking rod 8, sleeve 9, first connecting section 10, second connecting section 11, first spiral 12, second spiral 13, rotating section 14, balancing hole 15, plug 16. DETAILED DESCRIPTION

[0019] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] In an exemplary embodiment, Figure 1 、 2 As shown, the present embodiment provides a blast furnace mud gun plugging mud amount measurement system, which includes a pipe 1 for conveying gun mud, and two groups of ultrasonic sensors installed on the pipe 1, each group of ultrasonic sensors includes a transmitter 2 and a receiver 3, and the two groups of ultrasonic sensors are cross-symmetrically arranged on both sides of the pipe 1, wherein the transmitter 2 and the receiver 3 each include a body 4, and a terminal 5 connected to the body 4 (the terminal 5 is used to connect a wire to connect to the control system, collect and analyze data, and finally obtain the mud amount after conversion, and then display it on the display screen so that the operator can clearly observe the final measurement data), the end of the body 4 away from the terminal 5 is the working end, the working end emits or receives ultrasonic rays, the working end is fixed on the outer wall of the pipe 1 and there is a filling cavity 6 between it and the outer wall of the pipe 1, the filling cavity 6 is filled with a coupling agent, and the filled coupling agent is a coupling agent commonly used in the existing technology, which can reduce the energy loss of ultrasonic waves when passing through the filling cavity 6, thereby making the measurement deviation The difference is reduced, the accuracy of the gun mud amount is further improved, and the problem of low accuracy caused by the contact gap between the ultrasonic sensor and the pipeline 1 in the prior art is solved; more specifically, the main body 4 is fixedly connected to a mounting plate 7 for connecting it to the pipeline 1, and the mounting plate 7 provides a mounting base so that the main body 4 can be fixed on the outer wall of the pipeline 1 to realize the installation of the ultrasonic sensor, and the filling cavity 6 is arranged in the mounting plate 7; in further detail, the mounting plate 7 has an annular structure extending beyond the main body 4, which facilitates the connection of the mounting plate 7 to the outer wall of the pipeline 1, such as welding. More specifically, the mounting plate 7 is also provided with an injection hole and an outlet hole connected to the filling cavity 6, and the injection hole and the outlet hole are respectively detachably connected to a blocking rod 8, which is located on the annular structure. After removing the blocking rod 8, the coupling agent can be injected through the injection hole. After the coupling agent is discharged from the outlet hole, the coupling agent is filled after a period of time, and then the blocking rod 8 can be re-sealed.

[0022] like Figure 1-3As shown, the mounting plate 7 is fixedly connected with a pipe sleeve 9 surrounding the injection hole and the outlet hole respectively. The inner diameter of the pipe sleeve 9 is larger than the injection hole and the outlet hole. The blocking rod 8 includes a first connecting section 10 and a second connecting section 11. The first connecting section 10 is threadedly connected to the injection hole and the outlet hole, and the second connecting section 11 is threadedly connected to the pipe sleeve 9. That is, the outer diameter of the first connecting section 10 is smaller than the second connecting section 11. There is an annular step structure between the first connecting section 10 and the second connecting section 11. There is also an annular step structure between the corresponding pipe sleeve 9 and the injection hole and the outlet hole. When the two are offset, they are fully connected to achieve the connection of the blocking rod 8. At the same time, A first spiral 12 and a second spiral 13 are also provided outside the first connecting section 10 and the second connecting section 11, and a spiral that cooperates with the first spiral 12 is provided in the corresponding injection hole and the outlet hole, and a spiral that cooperates with the second spiral 13 is provided in the pipe sleeve 9, thereby realizing the detachable connection of the blocking rod 8; furthermore, a rotating section 14 is also connected to the second connecting section 11, and the rotating section 14 is located outside the pipe sleeve 9, which is convenient for the operator to hold, thereby conveniently realizing the detachable connection of the blocking rod 8. In more detail, there is an annular contact surface between the rotating section 14 and the pipe sleeve 9, and they are fully connected when the rotating section 14 and the pipe sleeve 9 are against each other.

[0023] like Figure 2 、 3 As shown, in a further detailed scheme, a balancing hole 15 connecting the inside and the outside of the pipe sleeve 9 is also provided. The first spiral 12 extends from one end of the first connecting section 10 to the other end, and the second spiral 13 extends from the end close to the first spiral 12 to the balancing hole 15. During the process of detachable connection of the blocking rod 8, that is, when the blocking rod 8 is connected, the first spiral 12, the second spiral 13 and the balancing hole 15 form a channel connecting the filling cavity 6 and the external space, but the channel is very small. During the connection process, the two blocking rods 8 are connected synchronously, so that the two blocking rods 8 will gradually squeeze the filling cavity 6, and the pressure will become greater and greater, thereby forcing the air to be pressed into the channel and discharged outward. After complete connection, the balancing hole 15 is sealed with a plug 16 to complete the installation.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A blast furnace mud gun plugging mud amount measurement system, characterized in that: It includes a pipeline for conveying cannon mud, and two groups of ultrasonic sensors installed on the pipeline, each group of ultrasonic sensors includes a transmitter and a receiver, and the two groups of ultrasonic sensors are cross-symmetrically arranged on both sides of the pipeline, wherein the transmitter and the receiver each include a body and a terminal connected to the body, the end of the body away from the terminal is the working end, the working end emits or receives ultrasonic rays, the working end is fixed on the outer wall of the pipeline, and there is a filling cavity between it and the outer wall of the pipeline, and the filling cavity is filled with coupling agent.

2. The blast furnace mud gun plugging mud amount measurement system according to claim 1, characterized in that: The main body is fixedly connected with a mounting plate, the mounting plate is fixedly connected to the outer wall of the pipeline, and the filling cavity is arranged in the mounting plate.

3. The blast furnace mud gun plugging mud amount measurement system according to claim 2, characterized in that: The mounting plate is also provided with an injection hole and a lead-out hole which are communicated with the filling cavity. The injection hole and the lead-out hole are respectively detachably connected with a blocking rod.

4. The blast furnace mud gun plugging mud amount measurement system according to claim 3, characterized in that: The mounting plate is fixedly connected with a pipe sleeve which surrounds the injection hole and the outlet hole respectively. The blocking rod includes a first connecting section and a second connecting section. The first connecting section is threadedly connected to the injection hole and the outlet hole, and the second connecting section is threadedly connected to the pipe sleeve.

5. The blast furnace mud gun plugging mud amount measurement system according to claim 4, characterized in that: The second connecting section is also fixedly connected to a rotating section located outside the pipe sleeve.

6. The blast furnace mud gun plugging mud amount measurement system according to claim 5, characterized in that: There is an annular contact surface between the rotating section and the pipe sleeve.

7. The blast furnace mud gun plugging mud amount measurement system according to claim 6, characterized in that: The pipe sleeve is also provided with a balancing hole communicating with the inside and outside.

8. The blast furnace mud gun plugging mud amount measurement system according to claim 7, characterized in that: A first spiral and a second spiral are respectively provided on the first connecting section and the second connecting section. The first spiral extends from one end of the first connecting section to the other end, and the second spiral extends from an end close to the first spiral to the balancing hole.

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