Expansion displacement monitoring equipment fixing device

Abstract

The utility model provides an expansion displacement monitoring equipment fixing device, and belongs to the field of boiler pipeline expansion monitoring. The problems that an existing expansion displacement monitoring sensor is precise in structure and large in field installation and fixation difficulty, the field environment temperature of a thermal power plant is high, smoke dust is large, the measurement precision of the sensor can be affected by high-temperature and high-dust working conditions, obtained expansion displacement monitoring data are unstable, errors exist, and the measurement precision is poor are solved. And the service life of the sensor is greatly shortened in a high-temperature and high-dust environment. The device comprises a cubic dust cover and a fixed base, the cubic dust cover is arranged on the fixed base, an expansion displacement monitoring device is arranged in the cubic dust cover, and a soft leather layer is arranged at the top of the cubic dust cover. The device is mainly used for boiler pipeline expansion monitoring.

Description

Technical Field

[0001] The utility model belongs to the field of boiler pipeline expansion monitoring, in particular to a fixing device for expansion displacement monitoring equipment. Background Art

[0002] To monitor whether the boiler body, boiler tubes, boiler headers, and four major pipelines are in the correct operating mode, and to supervise the safe operation and reliability of the boiler body and important steam-water systems such as the main steam, reheat steam, feed water pipelines, and headers. In the design and setting of the boiler and the four major pipelines, according to the different boiler capacities and boiler types, about 25-35 typical expansion monitoring points are designed and arranged on different platforms and different positions at a height of 10 to 80 meters for each boiler. Their function is to monitor the correct direction and correctness of the expansion and contraction of the boiler body and the four major pipelines. Most of the typical expansion monitoring points set up for the boiler body and the four major pipelines use traditional independent point offline three-way displacement expansion indicators, and their functions and applications have the following problems:

[0003] 1. Real-time measurement and real-time monitoring cannot be achieved. The on-site three-dimensional displacement expansion indicators are distributed at different heights, platforms, and locations in the boiler room with a height of 10-80 meters. There are about 25-35 typical monitoring points, which are numerous and widespread. During the start-up and shutdown of the unit and the large load changes, the measurement data cannot be measured and monitored in real time;

[0004] 2. Poor synchronization and timeliness. Equipment management personnel and operating personnel need to check and identify handwritten data point by point on site. It takes about 2 hours to complete an inspection and statistical process. The recorded expansion data is no longer the measurement value under the same working conditions, and the synchronization and timeliness are poor;

[0005] 3. Poor measurement accuracy. The on-site three-dimensional displacement expansion indicator uses a rigid pointer corresponding to the mm-level dial and relies on human vision to identify and record expansion data, resulting in large measurement and recording errors.

[0006] Therefore, the expansion displacement monitoring equipment of some existing thermal power plants uses sensors to monitor the expansion displacement of typical expansion monitoring points, which can realize real-time measurement and real-time monitoring of typical expansion monitoring points, and has good synchronization and timeliness. However, the structure of the sensor used for expansion displacement monitoring is relatively precise, and it is difficult to install and fix it on site. In addition, the on-site ambient temperature of the thermal power plant is high, and the smoke and dust are large. The measurement accuracy of the sensor will be affected by the high temperature and high dust conditions, resulting in the expansion displacement monitoring data obtained being unstable and having errors. In addition, the high temperature and high dust environment will greatly shorten the service life of the sensor. Utility Model Content

[0007] In view of this, the utility model aims to propose a fixing device for expansion displacement monitoring equipment to solve the problems that the structure of the existing expansion displacement monitoring sensor is relatively precise and it is difficult to install and fix it on site, and the on-site ambient temperature of the thermal power plant is high and the smoke and dust are large. The measurement accuracy of the sensor will be affected by the high temperature and high dust conditions, resulting in the expansion displacement monitoring data obtained being unstable and having errors, and the high temperature and high dust environment will greatly shorten the service life of the sensor.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixing device for expansion displacement monitoring equipment, which includes a cubic dust cover and a fixed base, the cubic dust cover is arranged on the fixed base, the expansion displacement monitoring equipment is arranged in the cubic dust cover, and the top of the cubic dust cover is arranged with a soft leather layer.

[0009] Furthermore, the expansion displacement monitoring equipment includes an expansion displacement monitoring rod and three pull-wire displacement sensors, the three pull-wire displacement sensors are all arranged on the upper surface of the fixed base, one end of the pull wires of the three pull-wire displacement sensors are connected to the bottom end of the expansion displacement monitoring rod, and the top end of the expansion displacement monitoring rod is connected to the expansion monitoring point of the boiler through the soft cortex.

[0010] Furthermore, the three wire displacement sensors are respectively arranged at different positions on the same plane.

[0011] Furthermore, the soft skin layer includes four isosceles triangle soft skins, and the four isosceles triangle soft skins are arranged around the expansion displacement monitoring rod. The bottom edge of the isosceles triangle soft skins is connected to the top edge of the cubic dust cover, and the sides between two adjacent isosceles triangle soft skins are connected. The top points of the four isosceles triangle soft skins intersect at one point, and the expansion displacement monitoring rod passes through the intersection of the top points of the four isosceles triangle soft skins.

[0012] Furthermore, heat insulating cotton is arranged on the inner wall of the cubic dust cover.

[0013] Furthermore, a power cord reserved hole is provided at the bottom of one side of the cubic dust cover.

[0014] Furthermore, a data transmission line reserved hole is provided at the bottom of one side of the cubic dust cover.

[0015] Furthermore, the cubic dust cover is made of stainless steel.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model provides a fixing device for expansion displacement monitoring equipment. A cubic dust cover and a fixing base are arranged on the basis of the expansion displacement monitoring equipment to install and fix the equipment. The device can realize the rapid installation and fixing of the expansion displacement monitoring equipment on site;

[0018] 2. The utility model provides a fixing device for expansion displacement monitoring equipment. The cubic dust cover, heat insulation cotton and soft leather layer are provided to realize the dustproof, high temperature resistant and stable characteristics of the device, so as to ensure that the expansion displacement monitoring equipment in the device can operate stably in the environment of thermal power plants with high on-site ambient temperature and large smoke and dust, so as to obtain stable expansion displacement monitoring data;

[0019] 3. The utility model provides a fixing device for expansion displacement monitoring equipment, which protects the wire displacement sensor in the expansion displacement monitoring equipment through the setting of a cubic dust cover, heat insulation cotton and a soft leather layer, thereby extending the service life of the expansion displacement monitoring equipment and saving the repair and maintenance cost of the expansion displacement monitoring equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of a fixing device for expansion displacement monitoring equipment.

[0022] 1-fixed base, 2-cube dust cover, 3-pull wire displacement sensor, 4-power line reserved hole, 5-data transmission line reserved hole, 6-isosceles triangle soft leather, 7-expansion displacement monitoring rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0024] See also Figure 1This embodiment describes an expansion displacement monitoring device fixing device, which includes a cubic dust cover 2 and a fixed base 1, wherein the cubic dust cover 2 is arranged on the fixed base 1, and the expansion displacement monitoring device is arranged inside the cubic dust cover 2, and the top of the cubic dust cover 2 is provided with a soft leather layer, and the inner wall of the cubic dust cover 2 is provided with heat insulation cotton. In this embodiment, the cubic dust cover 2 is welded to the fixed base 1 for dustproof treatment of the expansion displacement monitoring device, and the heat insulation cotton is attached to the inner wall of the cubic dust cover 2 for heat insulation treatment of the interior of the cubic dust cover 2 to prevent high temperature and high dust conditions from affecting the stability of the expansion displacement monitoring device, resulting in instability and errors in the obtained expansion displacement monitoring data.

[0025] In this embodiment, a cubic dust cover 2 and a fixed base 1 are provided on the basis of the expansion displacement monitoring device to install and fix the device. The device can be installed by simply installing and fixing the fixed base 1 of the device to a specified position. Through this device, the expansion displacement monitoring device can be quickly installed and fixed on site.

[0026] This embodiment realizes the dustproof, high temperature resistant and stable characteristics of the device by setting up the cubic dust cover 2, thermal insulation cotton and soft leather layer, ensuring that the expansion displacement monitoring equipment in the device can operate stably in the environment of thermal power plants with high on-site ambient temperature and large amount of smoke and dust, so as to obtain stable expansion displacement monitoring data.

[0027] The expansion displacement monitoring device described in this embodiment includes an expansion displacement monitoring rod 7 and three pull-wire displacement sensors 3, and the three pull-wire displacement sensors 3 are all arranged on the upper surface of the fixed base 1. One end of the pull wires of the three pull-wire displacement sensors 3 are connected to the bottom end of the expansion displacement monitoring rod 7, and the top end of the expansion displacement monitoring rod 7 is connected to the expansion monitoring point of the boiler through the soft cortex. The expansion and contraction of the expansion monitoring point causes one end of the expansion displacement monitoring rod 7 to undergo a slight displacement, thereby driving the pull wire ends of the three pull-wire displacement sensors 3 at the bottom end of the expansion displacement monitoring rod 7 to produce corresponding displacements, thereby causing the pull-wire displacement sensor 3 to sense the expansion and contraction changes of the expansion monitoring point. The three pull-wire displacement sensors 3 transmit the measured data to the system for processing to obtain the expansion and contraction direction and specific value of the expansion monitoring point.

[0028] In this embodiment, the provision of the soft cortex will not hinder the free movement of the expansion displacement monitoring rod 7 .

[0029] This embodiment protects the wire displacement sensor 3 in the expansion displacement monitoring device by providing the cubic dust cover 2, the heat insulating cotton and the soft leather layer, thereby extending the service life of the expansion displacement monitoring device and saving the repair and maintenance cost of the expansion displacement monitoring device.

[0030] The three wire displacement sensors 3 described in this embodiment are respectively arranged at different positions on the same plane, and the specific positions of the three wire displacement sensors 3 can be adaptively adjusted according to actual needs.

[0031] The soft leather layer in this embodiment includes four isosceles triangle soft leathers 6, and the four isosceles triangle soft leathers 6 are arranged around the expansion displacement monitoring rod 7. The bottom edge of the isosceles triangle soft leather 6 is connected to the top edge of the cubic dust cover 2, and the sides between two adjacent isosceles triangle soft leathers 6 are connected. The top points of the four isosceles triangle soft leathers 6 intersect at one point, and the expansion displacement monitoring rod 7 passes through the intersection of the top points of the four isosceles triangle soft leathers 6.

[0032] In this embodiment, a power cord reserved hole 4 is provided at the bottom of one side of the cubic dust cover 2. The power cord reserved hole 4 is an external power supply channel to provide power to the expansion displacement monitoring device.

[0033] In this embodiment, a data transmission line reserved hole 5 is provided at the bottom of one side of the cubic dust cover 2. The data transmission line reserved hole 5 is an external communication channel. The pull-wire displacement sensor 3 transmits the measured data to the system through the data transmission line for processing.

[0034] The cubic dust cover 2 in this embodiment is made of stainless steel, which has good corrosion resistance.

[0035] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A fixing device for expansion displacement monitoring equipment, characterized in that: It comprises a cubic dust cover (2) and a fixed base (1), wherein the cubic dust cover (2) is arranged on the fixed base (1), an expansion displacement monitoring device is arranged inside the cubic dust cover (2), and a soft skin layer is arranged on the top of the cubic dust cover (2).

2. The fixing device for expansion displacement monitoring equipment according to claim 1, characterized in that: The expansion displacement monitoring device comprises an expansion displacement monitoring rod (7) and three pull-wire displacement sensors (3), wherein the three pull-wire displacement sensors (3) are all arranged on the upper surface of a fixed base (1), one end of the pull wires of the three pull-wire displacement sensors (3) are all connected to the bottom end of the expansion displacement monitoring rod (7), and the top end of the expansion displacement monitoring rod (7) passes through a soft cortex and is connected to an expansion monitoring point of the boiler.

3. The fixing device for expansion displacement monitoring equipment according to claim 2, characterized in that: The three wire displacement sensors (3) are respectively arranged at different positions on the same plane.

4. The fixing device for expansion displacement monitoring equipment according to claim 2, characterized in that: The soft skin layer comprises four isosceles triangle soft skins (6), the four isosceles triangle soft skins (6) are arranged around the expansion displacement monitoring rod (7), the bottom edge of the isosceles triangle soft skins (6) is connected to the top edge of the cubic dust cover (2), the side edges between two adjacent isosceles triangle soft skins (6) are connected, the top points of the four isosceles triangle soft skins (6) intersect at one point, and the expansion displacement monitoring rod (7) passes through the intersection of the top points of the four isosceles triangle soft skins (6).

5. The fixing device for expansion displacement monitoring equipment according to claim 1, characterized in that: Heat insulation cotton is arranged on the inner wall of the cubic dust cover (2).

6. The fixing device for expansion displacement monitoring equipment according to claim 1, characterized in that: A power line reserved hole (4) is provided at the bottom of one side of the cubic dust cover (2).

7. The fixing device for expansion displacement monitoring equipment according to claim 1, characterized in that: A data transmission line reserved hole (5) is provided at the bottom of one side of the cubic dust cover (2).

8. The fixing device for expansion displacement monitoring equipment according to claim 1, characterized in that: The cubic dust cover (2) is made of stainless steel.

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