CN220912505U

CN220912505U - Surface temperature monitoring and alarming device for foam coal gasifier

Info

Publication number: CN220912505U
Application number: CN202322845326.1U
Authority: CN
Inventors: 李旭光; 任延杰; 赵红光; 周宏�
Original assignee: Xinjiang Qinghua Energy Group Co ltd; Hku Intelligent Technology Shandong Co ltd
Current assignee: Xinjiang Qinghua Energy Group Co ltd; Hku Intelligent Technology Shandong Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-05-07
Anticipated expiration: 2033-10-24

Abstract

The utility model relates to a surface temperature monitoring and alarming device for a foam coal gasifier, which belongs to the technical field of temperature detection and comprises a hot spot detector, a compensation wire, clamps, a wiring groove, a bus type remote I/O assembly and a power connection box, wherein the hot spot detector is fixed through a plurality of clamps and is connected with the compensation wire, the compensation wire is arranged in the wiring groove, the second end of the compensation wire is connected with the power connection box, and the power connection box is internally connected with the bus type remote I/O assembly. The utility model overcomes the defect that the hot spot on the surface of the gasification furnace can not be continuously detected, does not need a plurality of transmitters, signal cables, interfaces and the like, and can effectively reduce the excessive consumption of communication cables and interfaces of a control system. The aim of monitoring the safe operation condition of the device is fulfilled by detecting and analyzing the voltage signal output by the hot spot detector.

Description

Surface temperature monitoring and alarming device for foam coal gasifier

Technical Field

The utility model relates to the technical field of temperature detection, in particular to a surface temperature monitoring and alarming device for a foam coal gasifier.

Background

The circulating fluidized bed gasification furnace has high reliability, high stability and high availability, and also has the best environmental protection property and wide fuel adaptability, in particular to the adaptability of inferior fuels such as foam coal, and the like, so the circulating fluidized bed gasification furnace is receiving more and more attention. The main structure of the boiler comprises a combustion chamber, a circulating furnace and a residual boiler system, the daily working temperature is generally 900-1100 ℃, and the shell is internally lined with a fireproof heat insulation material to reduce the temperature of the shell, so that the temperature of the outer wall is maintained within 250 ℃, and the highest temperature cannot exceed 400 ℃. However, there is a greater risk of localized shedding due to thermal insulation material quality defects, stacking defects, airflow erosion, and the like. If the local refractory and heat-insulating material falls off or excessively wears, hot spots appear in the shell, namely the temperature rises rapidly and exceeds the allowable temperature, and even further rises until the shell is burnt, so that fire, explosion and the like are caused. Thus, an omnibearing 24-hour hot spot detection of the outer wall enclosure is necessary.

The surface hot spot sensor mainly comprises a thermocouple and a protective sleeve thereof, wherein a point is welded by positive and negative electrode wires, and insulators such as magnesium oxide and the like are filled around the thermocouple in the protective sleeve, one thermocouple can only detect one point, the area to be detected of the circulating fluidized bed gasifier device is up to 1000 square meters, and the detection of the whole surface cannot be realized even if tens of thousands of thermocouples are used; meanwhile, too many thermocouples require a plurality of transmitters, signal cables, interfaces and the like, and are complex.

Therefore, the existing thermocouple temperature measurement scheme cannot meet the requirement of hot spot detection on the whole surface of the gasifier device, and based on the hot spot detection, the utility model designs a surface temperature monitoring and alarming device for a foam coal gasifier so as to overcome the defects of the prior art.

Disclosure of utility model

The utility model aims to provide a surface temperature monitoring and alarming device for a foam coal gasifier, which solves the problem of full-surface hot spot detection of the foam coal gasifier.

The utility model is realized by the following technical scheme:

The utility model provides a foam is surface temperature monitoring and alarm device for coal gasifier, includes hot spot detector, compensation wire, anchor clamps, wiring groove, bus type remote I/O subassembly, connects the electronic box, the hot spot detector is fixed through a plurality of anchor clamps, the hot spot detector is connected with the compensation wire, the compensation wire sets up in the wiring groove, and the second end connection of compensation wire connects the electronic box, connect the electronic box in access bus type remote I/O subassembly.

The clamp comprises a U-shaped clamp and a pressing plate, wherein the U-shaped clamp is perpendicular to the furnace wall, the pressing plate is arranged on the adjacent side of the U-shaped clamp, one end of the U-shaped clamp is abutted to one end of the pressing plate, and the U-shaped clamp is fixed on the furnace wall through a fixing mechanism.

The fixing mechanism comprises a preset nut, a screw rod and a nut, the preset nut is fixed on the furnace wall, the U-shaped clamp is located right above the preset nut, the screw rod penetrates through the U-shaped clamp, and two ends of the screw rod are respectively connected with the preset nut and the nut in a threaded mode.

The center of the pressing plate is provided with a groove which is arc-shaped and has a depth of 2.1-2.5.

The cover plate is arranged on the wiring groove, a plurality of fastening holes are formed in the bottom of the wiring groove, a plurality of clamping grooves are formed in the side wall of the wiring groove, and the wiring groove is fixed on the furnace wall through the fixing piece.

The fastening hole is elliptical.

The bus type remote I/O component comprises a bottom plate, a temperature module, a power module and a gateway module which are in signal connection.

The utility model has the following beneficial effects:

the utility model monitors and pre-warns the safe operation condition of the device by detecting and analyzing the voltage signal output by the hot spot detector, and can be connected with 64 hot spot detectors at the same time at most, only the interfaces of 2 paths of communication cables and a control system are needed, compared with the interfaces of a common thermocouple, the utility model saves the interfaces of a plurality of communication cables and the control system one to one, and effectively reduces the excessive consumption of the interfaces of the communication cables and the control system.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following brief description of the drawings will make it apparent that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a clamp;

FIG. 3 is a schematic top view of a wiring trough;

fig. 4 is a schematic view of a wiring duct mounting structure.

In the drawings, the list of components represented by the various numbers is as follows:

1. A hot spot detector; 2. compensating wires; 3. wiring grooves; 31. a fastening hole; 33. a clamping groove; 4. a pressing plate; 5. a clamp; 51. a screw; 52. a fastening nut; 53. a U-shaped card; 6. a bus type I/O component; 7. a power connection box; 91. presetting a nut; 92. furnace wall.

Detailed Description

Technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it should be understood that terms such as "upper", "middle", "outer", "inner", "lower", etc. indicate orientations or positional relationships, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model relates to a surface temperature monitoring and alarming device for a foam coal gasifier, which is shown in fig. 1-4, and comprises a heat point detector 1, a compensation wire 2, a clamp 5, a wiring groove 3, a bus type remote I/O component 6 and a power connection box 7, wherein the heat point detector 1 is fixed through a plurality of clamps 5, the heat point detector 1 is connected with the compensation wire 2 through a connecting socket, the compensation wire 2 is arranged in the wiring groove 3, the temperature resistance of the compensation wire 2 can reach 250 ℃, the second end of the compensation wire 2 is connected with the power connection box 7, and then is connected with the bus type remote I/O component 6.

The second end of the compensation lead 2 is connected with a connection box 7, the connection box 7 is of an explosion-proof type or an explosion-proof type, the protection level is not lower than IP65, and the connection box 7 is connected with a bus type remote I/O component 6 to form a hot spot detection system. The hot spot detector 1 is a waterproof and explosion-proof hot spot detector in the prior art, is 3-30 m long, has an outer diameter of 2.5mm or 3.0mm, has a temperature measuring range of 50-800 ℃, and is wound around the outer wall of the gasification furnace according to a distance of 150-400 mm.

The clamp 5 includes a U-shaped clamp 53 arranged perpendicular to the furnace wall 92 and a clamp plate 4,U on the adjacent side of the U-shaped clamp 53 to fix the clamp plate 4, and the clamp plate 4 to fix the thermosensitive cable. Referring to fig. 2, one end of a U-shaped card 53 abuts against the distal end of a pressing plate 4, the U-shaped card 53 is fixed on a furnace wall 92 through a fixing mechanism, the fixing mechanism comprises a preset nut 91, a screw rod 51 and a fastening nut 52, the preset nut 91 is fixed on the furnace wall 92, the U-shaped card 53 is located right above the preset nut 91, the screw rod 51 penetrates through the U-shaped card 53, two ends of the screw rod 51 are respectively in threaded connection with the preset nut 91 and the fastening nut 52, and a flat pad and an elastic pad are arranged between the U-shaped card 53 and the fastening nut 52. The center of the pressing plate 4 is provided with a groove which is arc-shaped and has a depth of 2.1-2.5, the pressing plate 4 is made of stainless steel, the groove is used for limiting a thermosensitive cable, and the outer diameter of the thermosensitive cable is 1.1-1.3.

The cover plate is arranged on the groove body of the wiring groove 3, a plurality of fastening holes 31 are formed in the bottom of the groove body, a plurality of clamping grooves 33 are formed in the side wall of the groove body and used for fixing the connecting piece of the heat point detector 1, and meanwhile the wiring groove 3 can be bent to be attached to the outer wall of the gasification furnace. The cell body is fixed on oven 92 through the mounting, and the mounting is fixed in the outer wall of gasifier prewelding nut, screw rod, and the screw rod passes fastening hole 31, and through the nut fixation, fastening hole 31 is oval, makes wiring groove 3 can lateral shifting on the screw rod, can overcome the defect that the screw rod position is nonstandard.

The bus type remote I/O module 6 generally includes a backplane, a temperature module, a power module, a gateway module, a protocol conversion card, and a connector, where the temperature module is a module with high load capacity to accommodate the high impedance heat point detector 1.

When the intelligent temperature control system is used, the heat point detector 1 can continuously and automatically generate a direct-current millivolt signal corresponding to the temperature of the highest temperature point along the line, the direct-current millivolt signal is transmitted to the bus type remote I/O component 6 through the compensation lead 2, the millivolt signal collected by the heat point detector 1 is converted into a standard signal of 4-20 mA by the temperature module in the bus type remote I/O component 6, and the standard signal is transmitted to a general control room through the instrument signal shielding cable, so that a DCS system is usually provided, a display screen of the DCS system can display a temperature value, and the intelligent temperature control system has an audible and visual alarm function, so that the effect of timely early warning according to temperature change is realized.

The preferred embodiments of the utility model disclosed above are merely for the purpose of helping to illustrate the utility model, and the preferred embodiments do not describe all details in detail nor are they intended to limit the utility model to the specific embodiments.

Claims

1. The utility model provides a foam coal gasifier is with surface temperature monitoring and alarm device which characterized in that: the intelligent electric power meter comprises a hot spot detector (1), a compensation wire (2), a clamp (5), a wiring groove (3), a bus type remote I/O component (6) and an electric connection box (7), wherein the hot spot detector (1) is fixed through a plurality of clamps (5), the hot spot detector (1) is connected with the compensation wire (2), the compensation wire (2) is arranged in the wiring groove (3), the second end of the compensation wire (2) is connected with the electric connection box (7), and the bus type remote I/O component (6) is connected into the electric connection box (7).

2. The surface temperature monitoring and alarming device for foam coal gasifier according to claim 1, wherein: the clamp (5) comprises a U-shaped clamp (53) perpendicular to the furnace wall (92) and a pressing plate (4) arranged on the adjacent side of the U-shaped clamp (53), one end of the U-shaped clamp (53) is abutted to one end of the pressing plate (4), and the U-shaped clamp (53) is fixed on the furnace wall (92) through a fixing mechanism.

3. The surface temperature monitoring and alarming device for foam coal gasifier according to claim 2, wherein: the fixing mechanism comprises a preset nut (91), a screw rod (51) and a fastening nut (52), wherein the preset nut (91) is fixed on the furnace wall (92), the U-shaped clamp (53) is located right above the preset nut (91), the screw rod (51) penetrates through the U-shaped clamp (53), and two ends of the screw rod (51) are respectively in threaded connection with the preset nut (91) and the fastening nut (52).

4. The surface temperature monitoring and alarming device for foam coal gasifier according to claim 2, wherein: the center of the pressing plate (4) is provided with a groove, the groove is arc-shaped, and the depth is 2.1-2.5.

5. A surface temperature monitoring and alarm device for a coal gasifier according to claim 3, wherein: the novel furnace wall is characterized in that a cover plate is arranged on the wiring groove (3), a plurality of fastening holes (31) are formed in the bottom of the wiring groove (3), a plurality of clamping grooves (33) are formed in the side wall of the wiring groove (3), and the wiring groove (3) is fixed on the furnace wall (92) through a fixing piece.

6. The surface temperature monitoring and alarming device for foam coal gasifier according to claim 5, wherein: the fastening hole (31) is elliptical.

7. The surface temperature monitoring and alarming device for foam coal gasifier according to claim 1, wherein: the bus type remote I/O component (6) is in signal connection with the hot spot detector (1).