Thickness measuring device for three-charging-tank blast furnace top valve plate

Abstract

The utility model belongs to the technical field of valve plate spare part measuring devices, and relates to a three-charging-tank blast furnace top valve plate thickness measuring device which comprises a measuring sleeve, a reinforcing rib is arranged at the rear end in the measuring sleeve, a fine thread nut is arranged at the front end of the measuring sleeve, and a fine thread bolt is arranged on the fine thread nut. According to the utility model, large-scale valve plate spare parts can be measured rapidly and accurately, valve plate wear can be mastered accurately, predictive preventive maintenance of the valve plate is realized, and accidents caused by valve plate breakage are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve plate spare part measuring device technical field, concretely relates to a kind of three material tank blast furnace top valve plate thickness measuring device. BACKGROUND

[0002] For the problem of the large-scale of the blast furnace top equipment of the present 3000m 3 Above blast furnace top equipment large-scale problem, blast furnace top equipment replacement difficulty increases, time is longer.Material flow valve plate is as the core equipment of blast furnace top distribution, once damaged blast furnace will not be able to normally distribute, and valve plate thickness is as the important basis for replacement, but valve plate area is large, and ordinary measuring tool is inconvenient to measure.

[0003] Blast furnace material flow valve plate center is worn for a long time by blast furnace burden impact, but because thickness cannot be measured, valve plate edge thickness is taken as the basis for replacement.The center is worn faster than the edge, and the center thickness of the valve plate is reduced and broken, causing blast furnace accidents, and the specific reasons for the valve plate under repair are as follows:

[0004] (1) the valve plate center is the impact point of the material, and the wear is faster;

[0005] (2) the thickness of the valve plate center cannot be measured, and the wear of the valve plate cannot be accurately grasped;

[0006] (3) the valve plate edge is slightly worn, which is easy to misjudge for maintenance personnel, causing the equipment under repair;

[0007] (4) the valve plate spare part cost is high, the replacement difficulty is large, and the spare part labor is wasted by early replacement;

[0008] Therefore, a tool for quickly and accurately measuring large valve plate spare parts is proposed, which can accurately grasp the wear of the valve plate, realize the predictive maintenance of the valve plate, and prevent accidents caused by the rupture of the valve plate. INVENTION CONTENTS

[0009] The utility model aims at providing a kind of three material tank blast furnace top valve plate thickness measuring device, with the function of quickly and accurately measuring large valve plate spare parts, to solve the problems of the above prior art.

[0010] In order to achieve the above purpose, the utility model adopts the technical scheme that the utility model provides a kind of three material tank blast furnace top valve plate thickness measuring device, including measuring sleeve, the rear end of the measuring sleeve is provided with reinforcing rib, the front end of the measuring sleeve is provided with fine tooth nut, and the fine tooth nut is provided with fine tooth bolt.

[0011] As a preferred, the measuring sleeve is Stainless steel pipe of material 1CR18NI9TI, the front end and the left and right ends of the measuring sleeve are closed, and the side view of the measuring sleeve is Shape.

[0012] Preferably, the reinforcing rib is arranged at the rear end of the measuring sleeve and is welded to the inner wall of the measuring sleeve.

[0013] Preferably, two fine tooth nuts are symmetrically arranged on the front end of the measuring sleeve.

[0014] Preferably, the head of the fine tooth bolt is provided with a thickness scale.

[0015] Preferably, the surface of the fine tooth bolt is plated with a 5-8 mu m titanium nitride wear-resistant layer.

[0016] Compared with the prior art, the advantages and positive effects of the utility model are that,

[0017] The utility model discloses a large valve plate spare part is measured accurately and quickly, can accurately grasp the valve plate wear, realizes the valve plate's foreknowledge prevention maintenance, and prevents the accident caused by the valve plate fracture. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the drawings needed to be used in the embodiment description a simple introduction, obviously, the following description in the drawings is some embodiments of the utility model, for the person skilled in the art comes, under the premise of not paying the creative labor intensity, can also obtain other drawings according to these drawings.

[0019] Figure 1 It is a kind of three material tank blast furnace top valve plate thickness measuring device's side view structure diagram;

[0020] In the above figure, 1, measuring sleeve, 2, reinforcing rib, 3, fine tooth nut, 4, fine tooth bolt. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the following will be further explained to the utility model by combining with the drawings and embodiments.It needs to be explained that, in the case where there is no conflict, the embodiment of the application and the features in the embodiment can be combined with each other.

[0022] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description herein, therefore, the utility model is not limited to the specific embodiments disclosed in the following disclosure.

[0023] Embodiment 1, as Figure 1As shown, a three-gauge high furnace top valve plate thickness measuring device, including a measuring sleeve 1, the measuring sleeve 1 is the main structure of the device, used to directly contact the valve plate center wear area, can cross the valve plate edge, and measure into the center wear part. The rear end of the measuring sleeve 1 is provided with a reinforcing rib 2, which is used to enhance the structural rigidity of the measuring sleeve 1, prevent data deviation caused by deformation under force during measurement.

[0024] The front end of the measuring sleeve 1 is provided with a fine thread nut 3, and the fine thread bolt 4 is installed on the fine thread nut 3. The fine thread bolt 4 is used as a direct measurement element, and the actual thickness of the valve plate is reflected by the rotation depth. The fine thread nut 3 cooperates with the fine thread bolt 4 to fine-tune the extension length of the fine thread bolt 4, and realizes accurate contact with the surface of the valve plate.

[0025] The specific design of the above key components will be described below:

[0026] The measuring sleeve 1 is a stainless steel pipe with a material of 1Cr18Ni9Ti. The front end and the left and right ends of the measuring sleeve 1 are open, and the rear end is closed. The side view of the measuring sleeve 1 is 1Cr18Ni9Ti austenitic stainless steel can be used for a long time below 650℃, and the temperature of the blast furnace top is usually ≤400℃, The open rear end can cross the valve plate edge and directly penetrate into the center wear area. The closed rear end is used as a force fulcrum to disperse the measurement pressure in cooperation with the reinforcing rib 2, avoiding deformation of the measuring sleeve 1.

[0027] The reinforcing rib 2 is arranged at the elbow of the rear end of the measuring sleeve 1, and the reinforcing rib 2 is welded to the inner wall of the measuring sleeve 1. When the rear end of the measuring sleeve 1 bears the measurement pressure, the reinforcing rib 2 disperses the local stress from a single direction to both sides, improves the bending stiffness, and avoids plastic deformation of the rear end of the measuring sleeve 1 caused by repeated operation.

[0028] Two fine thread nuts 3 are symmetrically arranged on the front end of the measuring sleeve 1, and the fine thread bolt 4 is installed on the fine thread nut 3. The fine thread nut 3 is of M6x0.5 type with a nominal diameter of 6mm and a pitch of 0.5mm. The single circle rotation advancement is 0.5mm, realizing micron-level sensitivity. The fine thread nut 3 is uniformly stressed when advancing, avoiding measurement errors caused by unbalanced load.

[0029] The head of the fine thread bolt 4 is provided with a thickness scale. The head of the fine thread bolt 4 is laser engraved with a ring scale, each circle corresponds to a pitch of 0.5mm, the scale line interval is 0.1mm, and the standard block is used for calibration before leaving the factory. The "zero position" is flush with the reference surface of the measuring sleeve 1.

[0030] The surface of the fine thread bolt 4 is plated with a 5-8μm titanium nitride wear-resistant layer. The PVD process is used to plate 5-8μm titanium nitride, reducing the wear of the fine thread bolt 4 during use.

[0031] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional types in the prior art, and the details are not described herein, and the contents not described in detail in the description belong to the prior art known by the professional technical personnel.

[0032] The above is only a preferred embodiment of the utility model, and is not a limitation on other forms of the utility model, and any skilled person in the art can change or modify the above disclosed technical content into equivalent embodiments with equivalent changes applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the technical scheme content of the utility model still belongs to the protection scope of the technical scheme of the utility model.

Claims

1. A three ladle blast furnace top valve plate thickness measuring device, characterized by, The measuring sleeve is internally provided with a reinforcing rib at the rear end, and is externally provided with a fine thread nut at the front end, and the fine thread nut is provided with a fine thread bolt.

2. A three ladle blast furnace top valve plate thickness measuring device according to claim 1, characterized in that, The measuring sleeve is The stainless steel pipe with material 1CR18NI9TI, the front end and the left and right ends of the measuring sleeve are opened, and the rear end is closed. The side view of the measuring sleeve is shaped.

3. A three ladle blast furnace top valve plate thickness measuring device according to claim 1, characterized in that, The reinforcing rib is arranged at the elbow of the rear end of the measuring sleeve and is welded to the inner wall of the measuring sleeve.

4. A three ladle blast furnace top valve plate thickness measuring device according to claim 1, characterized in that, Two fine thread nuts are symmetrically arranged on the front end of the measuring sleeve, and the fine thread nuts are fitted with fine thread bolts.

5. A three ladle blast furnace top valve plate thickness measuring device according to claim 4, characterized in that, The head of the fine thread bolt is provided with a thickness scale.

6. A three ladle blast furnace top valve plate thickness measuring device according to claim 4, characterized in that, The surface of the fine thread bolt is plated with a 5-8 μm titanium nitride wear-resistant layer.

Images