High-temperature-resistant steam rotation-resistant material level switch with split-type structure

Abstract

The utility model relates to a high-temperature-resistant steam rotation-resistant material level switch with a split structure. The high-temperature-resistant steam rotation-resistant material level switch comprises a detection instrument; one end of the upper split connecting shaft is connected with the detection end of the detection instrument; one end of the lower split connecting shaft is connected with one end, back to the detection instrument, of the upper split connecting shaft through a split coupling, and the other end of the lower split connecting shaft detects the blade; and the steam blocking disc is arranged on the outer side of the split coupling. According to the utility model, through the design of the upper split connecting shaft and the lower split connecting shaft, the detection instrument is separated from the detection blade, so that the opportunity that steam is in direct contact with the detection instrument can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of high temperature working condition material level detection technology, especially relates to the technical field of high temperature resistant steam rotation resisting material level switch of split type structure. BACKGROUND

[0002] In the thermal power plant, the stone coal hopper of coal mill usually needs to carry out material level detection, so the rotation resisting material level switch is generally used as the detection device of material level.

[0003] But because the coal quality contains a large amount of moisture, the field temperature is higher, condensate and steam are easily produced, the steam volatilization enters the terminal box of detection instrument, causes power trip, cannot normally detect material level, thereby easily causing huge influence and loss to industrial production. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of how to avoid steam volatilization entering the terminal box of detection instrument, causing power trip, unable to normally detect material level, thereby easily causing huge influence and loss to industrial production

[0005] In order to solve the above technical problem, according to the utility model provides a split type structure's high temperature resistant steam rotation resisting material level switch, including:

[0006] Detection instrument;

[0007] Upper split type connecting shaft, one end of the upper split type connecting shaft is connected to the detection end of the detection instrument;

[0008] Lower split type connecting shaft, one end of the lower split type connecting shaft is connected to the end of the upper split type connecting shaft away from the detection instrument through split type coupling, and the other end of the lower split type connecting shaft is connected to the detection blade;

[0009] Steam blocking disc, the steam blocking disc is arranged on the outer side of the split type coupling.

[0010] Further, the outer side top of the upper split type connecting shaft is fixedly provided with an annular heat sink.

[0011] Further, the outer side middle part of the upper split type connecting shaft is fixedly provided with an upper flange, and the top of the outer side of the lower split type connecting shaft is fixedly provided with a lower flange.

[0012] Further, the bottom middle part of the lower flange is fixedly provided with a mounting threaded pipe, and the outer wall of the lower split type connecting shaft is threadedly connected to the inner wall of the mounting threaded pipe.

[0013] Further, the upper flange and the lower flange are fixedly connected through a plurality of flange connecting rods.

[0014] Further, the upper split connecting shaft connects the split shaft coupling through a plurality of first coupling fasteners.

[0015] Further, the lower split connecting shaft connects the split shaft coupling through a plurality of second coupling fasteners.

[0016] Further, an annular slide groove is arranged outside the split shaft coupling, and the steam blocking disc is slidably connected to the annular slide groove.

[0017] Further, a piezoelectric element of a piezoelectric pressure sensor is arranged between the elastic assembly and the upper portion of the annular slide groove.

[0018] Further, an annular pressing plate structure is arranged on the inner wall of the upper portion of the annular slide groove, and the piezoelectric element is in an arc shape.

[0019] Compared with the prior art, the technical scheme provided by the embodiment of the utility model has at least the following beneficial effects:

[0020] Firstly, the utility model separates the detection instrument from the detection blade through the design of the upper split connecting shaft and the lower split connecting shaft, so that the opportunity of direct contact of the steam with the detection instrument is reduced.

[0021] Secondly, the steam blocking disc outside the split shaft coupling can effectively prevent the steam from entering the split shaft coupling, thereby protecting the connecting shaft and the detection blade inside.

[0022] Thirdly, the annular heat sink on the top of the outer side of the upper split connecting shaft helps to dissipate the heat generated by the high-temperature steam, thereby reducing the risk of overheating of the equipment.

[0023] Fourthly, the elastic assembly between the annular slide groove and the steam blocking disc outside the split shaft coupling and the piezoelectric element of the piezoelectric pressure sensor can monitor and respond to the change of the steam pressure. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings of the embodiments will be briefly introduced below, and obviously, the drawings described below only relate to some embodiments of the utility model, but not limit the utility model.

[0025] Figure 1 It is a perspective view of a split structure high-temperature steam resistant blocking material level switch of the utility model;

[0026] Figure 2The utility model discloses a sectional structure's high temperature resistant steam resistance material position switch of spinning of a kind of,

[0027] Figure 3 The utility model discloses a sectional structure's high temperature resistant steam resistance material position switch of spinning of a kind of the schematic diagram of upper flange, lower flange, flange connecting rod and split coupling,

[0028] Figure 4 The utility model discloses a sectional structure's high temperature resistant steam resistance material position switch of spinning of a kind of the schematic diagram of split coupling, steam resistance disc and piezoelectric element,

[0029] Figure 5 For Figure 4 Sectional view of B-B,

[0030] Figure 6 For Figure 5 The enlarged view of A.

[0031] In the drawing,

[0032] Detection instrument 1

[0033] Upper split connecting shaft 2

[0034] Upper flange 21

[0035] First coupling fastener 22

[0036] Lower split connecting shaft 3

[0037] Lower flange 31

[0038] Flange connecting rod 311

[0039] Mounting threaded pipe 32

[0040] Second coupling fastener 33

[0041] Split coupling 4

[0042] Annular chute 41

[0043] Annular tablet structure 411

[0044] Piezoelectric element 42

[0045] Detection blade 5

[0046] Steam resistance disc 6

[0047] Elastic assembly 61

[0048] Annular fin 7 Specific embodiment

[0049] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of the present application.

[0050] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the common meaning in the field of the present application to which the present application pertains. The terms "first", "second", and similar terms used in the description of the present patent application and claims are not intended to denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" and similar terms do not denote a quantity limitation, but denote the existence of at least one.

[0051] Reference Figures 1 to 6 The present application provides a high-temperature-resistant steam blocking material level switch with a split structure, comprising:

[0052] a detection instrument 1;

[0053] an upper split connecting shaft 2, one end of the upper split connecting shaft 2 being connected to a detection end of the detection instrument 1;

[0054] a lower split connecting shaft 3, one end of the lower split connecting shaft 3 being connected to an end of the upper split connecting shaft 2 away from the detection instrument 1 through a split coupling 4, and the other end of the lower split connecting shaft 3 detecting a blade 5;

[0055] a steam blocking disc 6, the steam blocking disc 6 being arranged outside the split coupling 4.

[0056] The present application uses a split structure design, so that the detection instrument can be away from the high-temperature steam environment, thereby improving the stability and reliability of the equipment. In addition, the use of the split coupling allows the upper split connecting shaft and the lower split connecting shaft to rotate flexibly in a high-temperature environment, reducing deformation or damage caused by high temperature. In addition, the arrangement of the steam blocking disc effectively blocks the influence of high-temperature steam on the detection instrument, protects the detection instrument, and prolongs its service life.

[0057] In a preferred embodiment, the outer top of the upper split shaft 2 is provided with an annular heat sink 7. The annular heat sink 7 can increase the heat dissipation area and improve the heat dissipation efficiency, thereby reducing the temperature of the shaft. By effectively dissipating heat, the material expansion or contraction caused by temperature changes can be reduced, maintaining the stability and reliability of the shaft. In addition, reducing the operating temperature of the shaft can slow down material aging and extend the service life of the equipment.

[0058] In a preferred embodiment, the outer middle of the upper split shaft 2 is provided with an upper flange 21, and the outer top of the lower split shaft 3 is provided with a lower flange 31. The upper flange 21 provided on the upper split shaft 2 can provide better stability and reliability for the upper split shaft 2; similarly, the lower flange 31 provided on the lower split shaft 3 can provide better stability and reliability for the lower split shaft 3.

[0059] In a preferred embodiment, the bottom middle of the lower flange 31 is fixedly provided with a mounting threaded pipe 32, and the outer wall of the lower split shaft 3 is threadedly connected to the inner wall of the mounting threaded pipe 32. Due to the provision of the mounting threaded pipe 32, the lower split shaft 3 can be conveniently connected to the lower flange 31. This threaded connection method is convenient for installation and maintenance, as they can be relatively easily disassembled and reassembled.

[0060] In a preferred embodiment, the upper flange 21 and the lower flange 31 are fixedly connected by a plurality of flange connecting rods 311. By using a plurality of flange connecting rods 311, the fixed connection between the upper flange 21 and the lower flange 31 can be enhanced, thereby providing higher structural stability and strength.

[0061] In a preferred embodiment, the upper split shaft 2 is connected to the split shaft coupling 4 by a plurality of first coupling fasteners 22. The use of a plurality of first coupling fasteners 22 can provide more reliable and stable connections, reducing the risk of failure of the entire connection system due to the failure of a single fastener; in addition, the distributed connection of multiple fasteners helps to distribute the load, thereby improving the stability and durability of the entire connection structure. Similarly, the lower split shaft 3 is connected to the split shaft coupling 4 by a plurality of second coupling fasteners 33.

[0062] In a preferred embodiment, the split coupling 4 is provided with an annular slide groove 41 on the outside, and the steam blocking disc 6 is slidably connected to the annular slide groove 41, and an elastic component 61 is arranged between the upper wall of the steam blocking disc 6 and the inner wall of the upper part of the annular slide groove 41. The annular slide groove 41 allows the steam blocking disc 6 to slide within a certain range, so that the steam blocking disc 6 has a certain amount of movement under the push of high-temperature steam, thereby reducing the stress concentration caused by thermal expansion. In addition, the steam blocking disc 6 can move to adapt to temperature changes, which helps to prevent sudden failures or accidents caused by high-temperature steam pressure accumulation, thereby improving the safety of the entire system.

[0063] In a preferred embodiment, a piezoelectric element 42 of a piezoelectric pressure sensor is arranged between the elastic component 61 and the upper part of the annular slide groove 41. The piezoelectric element 42 can detect changes in pressure received by the annular slide groove 41 or the elastic component 61. In addition, the piezoelectric element 42 can be a sensitive element that directly senses pressure and converts it into an electrical signal. In addition, the elastic component 61 can be used to transmit pressure to the piezoelectric element 42, and its deformation is proportional to the pressure it receives. Since the elastic component 61 receives pressure from the steam pushing the steam blocking disc 6, the piezoelectric element 42 can sense the real-time size of the steam pressure.

[0064] The composition of the piezoelectric pressure sensor of the present application is consistent with the composition of a conventional piezoelectric pressure sensor, and the only difference is that the piezoelectric element and the elastic sensitive element are sleeved in the annular slide groove 41. The composition of the piezoelectric pressure sensor of the present application includes the following components:

[0065] Piezoelectric element 42: This is the core of the sensor, responsible for converting the pressure acting on it into an electrical signal. The piezoelectric element 42 directly senses pressure and converts it into an electrical signal. The piezoelectric element 42 can be a piezoelectric ceramic element. Piezoelectric ceramic elements are sensitive elements made using the piezoelectric effect, capable of directly sensing pressure and converting it into an electrical signal. Common piezoelectric ceramic materials include lead zirconate titanate series piezoelectric ceramics (PZT) and non-lead series piezoelectric ceramics such as BaTiO3, etc.

[0066] Elastic sensitive element: The elastic component 61 can play this role, which transmits pressure to the piezoelectric element 42, and its deformation is proportional to the pressure it receives.

[0067] Pre-amplifier: Because the electrical signal generated by the piezoelectric element 42 is very weak, it usually needs to be amplified by a pre-amplifier with high input impedance. This amplifier can be a voltage amplifier or a charge amplifier, which functions to transform the high-impedance output of the sensor into a low-impedance output and amplify the weak electrical signal output by the sensor.

[0068] Signal processing circuit: including filter, analog-to-digital converter and the like, for further processing the amplified electrical signal, in order to display, record or further data analysis.

[0069] Connecting wire: for transmitting the output signal of piezoelectric element 42 to amplifier and signal processing circuit.

[0070] In a preferred embodiment, the coal mill connected with the utility model is provided with a pressure relief port, and the switch valve and piezoelectric pressure sensor of the pressure relief port are connected to the control part. The control part is the brain of the system, which receives the pressure signals from the piezoelectric pressure sensor and automatically adjusts the opening degree of the switch valve according to the signals.

[0071] In a preferred embodiment, the control part is a PLC (programmable logic controller), a microprocessor or other types of automatic control unit. In addition, the control part can be arranged at the detection instrument 1 to reduce the influence of temperature on it.

[0072] In a preferred embodiment, the upper inner wall of the annular chute 41 can be provided with an annular pressing structure 411 to increase the contact area with the piezoelectric element 42, so as to press the piezoelectric element 42 more effectively. The piezoelectric element 42 is an arc-shaped structure; the arc-shaped structure is located in the covering surface of the annular pressing structure 411. Such a structure design helps to improve the driving performance of the piezoelectric element, and can effectively utilize the piezoelectric effect for precise control.

[0073] The above description is only a demonstrative embodiment of the utility model, and is not used to limit the protection scope of the utility model, and the protection scope of the utility model is determined by the appended claims.

Claims

1. A high temperature resistant vapor proof spin stop level switch of split construction, characterized in that, The utility model relates to a high temperature resistant steam blocking material position switch, which comprises a detection instrument (1), an upper split connecting shaft (2) connected to the detection end of the detection instrument (1), a lower split connecting shaft (3) connected to the end of the upper split connecting shaft (2) away from the detection instrument (1) through a split coupling (4), and a steam blocking disc (6) arranged outside the split coupling (4). An annular heat sink (7) is arranged on the top of the outer side of the upper split connecting shaft (2). An upper flange (21) is arranged on the middle of the outer side of the upper split connecting shaft (2), and a lower flange (31) is arranged on the top of the outer side of the lower split connecting shaft (3). A mounting threaded pipe (32) is arranged on the bottom of the lower flange (31), and the outer wall of the lower split connecting shaft (3) is screwed to the inner wall of the mounting threaded pipe (32). The upper flange (21) and the lower flange (31) are fixedly connected through a plurality of flange connecting rods (311).

2. The high temperature steam resistant spin-resistant level switch of claim 1, wherein, The upper split connecting shaft (2) is connected to the split coupling (4) through a plurality of first coupling fasteners (22).

3. The high temperature steam resistant spin-resistant level switch of claim 1, wherein, The lower split connecting shaft (3) is connected to the split coupling (4) through a plurality of second coupling fasteners (33).

4. The high temperature steam resistant spin-resistant level switch of claim 3, wherein, 8. The high temperature resistant steam blocking material position switch according to claim 1, wherein an annular chute (41) is arranged outside the split coupling (4), the steam blocking disc (6) is slidably connected to the annular chute (41), and an elastic component (61) is arranged between the upper wall of the steam blocking disc (6) and the inner wall of the upper part of the annular chute (41).

5. The high temperature steam resistant spin-resistant level switch of claim 3, wherein, A piezoelectric element (42) of a piezoelectric pressure sensor is arranged between the elastic component (61) and the upper part of the annular chute (41).

6. The high temperature steam resistant spin-resistant level switch of claim 1, wherein, The inner wall of the upper part of the annular chute (41) can be provided with an annular pressing plate structure (411), and the piezoelectric element (42) is in an arc shape; the arc shape is located in the coverage of the annular pressing plate structure (411).

7. The high temperature steam resistant spin-resistant level switch of claim 1, wherein, ​ ​ ​ 9. The high temperature steam resistant spin-resistant level switch of claim 8, wherein, ​ 10. The high temperature steam resistant spin-resistant level switch of claim 9, wherein, ​

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