Temperature control device for instrument pipeline of thermal power plant

Abstract

The utility model relates to the technical field of thermal power plant thermal control, and particularly discloses a thermal power plant instrument pipeline temperature control device which comprises a protection box, a first fixing block penetrates through the interior of the protection box, a second fixing block is hinged to the first fixing block through a first hinge, an arc-shaped groove is formed in the first fixing block, and the second fixing block is hinged to the arc-shaped groove through a second hinge. The top of the first fixing block is fixedly connected with a connecting plate, the interior of the connecting plate is in threaded connection with a fastening bolt, an instrument pipeline penetrates through the interior of the protection box, three heat tracing cables penetrate through the interior of the protection box, and the surfaces of the heat tracing cables are attached to the inner side walls of the arc-shaped grooves. According to the utility model, the first fixing block, the arc-shaped groove, the connecting plate and the heat tracing cable are matched for use, so that the influence of external air temperature factors on the instrument pipeline during use is small, and a medium in the pipeline can be normally conveyed in cold weather.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the thermal control technical field of thermal power plant, concretely relates to a temperature control device for instrument pipeline of thermal power plant. BACKGROUND

[0002] The thermal power plant is a factory that uses fuel as fuel to produce electric energy, and the fuel is heated to generate steam when burning, and the chemical energy of the fuel is converted into heat energy, and the steam pressure drives the steam turbine to rotate, and the heat energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate, and the mechanical energy is converted into electric energy, and the instrument pipeline is generally used in the process of electric power production, and the instrument pipeline is generally used for measuring the medium from the source component to the measuring instrument or the transmitter, and is used for measuring pressure and differential pressure, and the instrument pipeline is always full of water source and water vapor with pressure, but if the weather is low in temperature, the water vapor in the instrument pipeline will freeze at this time, causing the interruption of the water vapor flow in the instrument pipeline, and therefore the temperature control device for instrument pipeline is needed to cope with the normal operation of the instrument pipeline under low temperature conditions.

[0003] In the Chinese patent with publication number CN214744098U, a temperature control device for instrument pipeline of thermal power plant is mentioned, which belongs to the thermal control technical field of thermal power plant, and solves the problem of various accidents caused by frozen instrument pipeline of thermal power plant. The device includes a protective box, a temperature control box, a temperature controller, a first / second temperature sensor, a heater, a heat tracing cable, a measuring instrument and an instrument pipeline; the measuring instrument is located in the protective box and connected with the process pipeline through the instrument pipeline; the temperature controller is located in the temperature control box, and the temperature control box is located in the protective box; the first temperature sensor is located in the protective box; the second temperature sensor is arranged on the outer surface of the instrument pipeline; the first temperature sensor and the second temperature sensor are electrically connected with the temperature controller respectively; the output end of the temperature controller is connected with the heater and the heat tracing cable respectively, and the heater is located in the protective box; the heat tracing cable is parallelly laid on the outer surface of the instrument pipeline. The temperature of the protective box and the instrument pipeline is detected and controlled in real time, and various accidents caused by frozen instrument pipeline are reduced.

[0004] However, the above technical solution has certain limitations in use. When the heat tracing cable is used, one end of the heat tracing cable is connected with the temperature controller, and after the surface of the heat tracing cable is laid flat on the instrument pipeline, the other end is fixed. The heat tracing cable only contacts the surface of the instrument pipeline, and the heat tracing cable is designed in a circular shape, which makes the contact area between the heat tracing cable and the surface of the instrument pipeline small, so that the subsequent heating effect is not significant. In addition, if the other end of the heat tracing cable is loose after a long time of use, the heat tracing cable may be separated from the instrument pipeline, causing the condensation of water vapor in the instrument pipeline under low temperature conditions. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose lies in providing a kind of temperature control device of instrument pipeline in thermal power plant, to solve the problem that the surface of heat tracing cable and the surface of instrument pipeline contact area is smaller and the surface adhesion of heat tracing cable and instrument pipeline is poor in the background technique proposed above.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of temperature control device of instrument pipeline in thermal power plant, including protective box, the inside of the protective box is penetrated by first fixed block, the first fixed block is hinged with second fixed block by first hinge, the inside of the first fixed block is equipped with arc slot, the top of the first fixed block is fixedly connected with connecting plate, the inside of the connecting plate is threadedly connected with fastening bolt, the inside of the protective box is penetrated by instrument pipeline, the inside of the protective box is penetrated by three heat tracing cables, and the surface of heat tracing cable is attached with the inner side wall of arc slot.

[0007] Preferably, the inside of the protective box is equipped with plug-in hole, and the surface of the first fixed block and the second fixed block is penetrated in the inside of plug-in hole, the surface of the first fixed block is fixedly connected with sliding block, both sides of the inner side wall of plug-in hole are equipped with sliding slot, and the sliding block is slidably connected in the inside of sliding slot, the bottom end of the instrument pipeline is fixedly connected with process pipeline.

[0008] Preferably, the bottom end of the side of the protective box is fixedly connected with positioning block, the inside of the positioning block is equipped with threaded hole, the inside of the threaded hole is penetrated by first temperature sensor.

[0009] Preferably, the top end of the first temperature sensor is fixedly connected with connecting column, and the surface of the connecting column is threadedly connected in the inside of threaded hole, the inside of the first temperature sensor is fixedly connected with first cable, and the surface of the first cable is penetrated in the inside of connecting column and protective box respectively.

[0010] Preferably, one side of the inner top wall of the protective box is fixedly connected with temperature control box, the inside of the temperature control box is fixedly connected with temperature control instrument, the surface of the instrument pipeline is provided with two valves.

[0011] Preferably, the inside of the temperature control box is fixedly connected with second temperature sensor, the other side of the inner top wall of the protective box is fixedly connected with heater, and the heater is connected with temperature control instrument by second cable.

[0012] Preferably, the bottom end of the one side of the inner side wall of the protective box is fixedly connected with measuring instrument, the inner side wall of the protective box is fixedly connected with two wire fixing devices, and the surface of heat tracing cable is penetrated in the inside of wire fixing device.

[0013] Preferably, two fixing bars are fixedly connected to both sides of the protection box, screws are passed through the internal threads of the fixing bars, and an inspection door is connected to one side of the surface of the protection box through a second hinge.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The instrument pipeline can avoid the influence of external environmental factors when in use, especially when the temperature is low, to avoid the solidification of the liquid inside the instrument pipeline, to ensure the normal circulation of the medium inside the instrument pipeline. At the same time, multiple heating cables can make the instrument pipeline warm up well. The contact area between the heating cable and the instrument pipeline surface is larger, making the warming effect more significant. At the same time, the staff can monitor the temperature of the instrument pipeline in real time, which is convenient for real-time adjustment.

[0016] (2) The heating cable can be fixed during use to avoid loosening of the heating cable during long-term use. At the same time, when the heating cable is connected to the instrument pipeline, the first fixing block and the second fixing block can be quickly connected to the protective box to avoid excessive exposure of the instrument pipeline and reduce the impact of external factors on its temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the heating cable of the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the arc groove of the utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the internal structure of the protective box of the utility model;

[0021] In the figure: 1. Protective box; 2. First fixing block; 3. Second fixing block; 4. Arc groove; 5. Connecting plate; 6. Fastening bolts; 7. Instrument pipeline; 8. Heating cable; 9. Connecting hole; 10. Sliding block; 11. Process pipeline; 12. Positioning block; 13. First temperature sensor; 14. First cable; 15. Temperature control box; 16. Temperature control instrument; 17. Heater; 18. Measuring instrument; 19. Wire holder; 20. Fixing bar; 21. Valve; 22. Inspection door. DETAILED DESCRIPTION

[0022] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment one:

[0024] Please refer to Figures 1 to 4 As shown in FIG. 1, a temperature control device for instrument pipeline in thermal power plant, including the protection box 1, the inside of protection box 1 is through first fixed block 2, first fixed block 2 is hinged with second fixed block 3 through first hinge, the inside of first fixed block 2 is provided with arc slot 4, the top of first fixed block 2 is fixedly connected with connecting plate 5, the inside of connecting plate 5 is screwed with fastening bolt 6, the inside of protection box 1 is through instrument pipeline 7, the inside of protection box 1 is through three heat tracing cables 8, and the surface of heat tracing cable 8 is attached to the inner side wall of arc slot 4. The structure inside first fixed block 2 and second fixed block 3 is same, the top of second fixed block 3 is also fixedly connected with connecting plate 5, which is convenient for subsequent connection.

[0025] The bottom end of one side of protection box 1 is fixedly connected with positioning block 12, the inside of positioning block 12 is provided with threaded hole, the inside of threaded hole is through first temperature sensor 13. Through the setting of first temperature sensor 13, the temperature of instrument pipeline 7 can be measured, it should be noted that the detection head at the bottom end of first temperature sensor 13 passes through two connecting plates 5 and contacts with the surface of instrument pipeline 7.

[0026] The top end of first temperature sensor 13 is fixedly connected with connecting column, and the surface of connecting column is screwed in the inside of threaded hole, the inside of first temperature sensor 13 is fixedly connected with first cable 14, and the surface of first cable 14 is respectively through the inside of connecting column and protection box 1. Through the collocation of connecting column and threaded hole, first temperature sensor 13 can be fixed on positioning block 12, and it is convenient for subsequent disassembly.

[0027] One side of the inner top wall of protection box 1 is fixedly connected with temperature control box 15, the inside of temperature control box 15 is fixedly connected with temperature control instrument 16, and the surface of instrument pipeline 7 is provided with two valves 21. Through temperature control instrument 16, the temperature of instrument pipeline 7 can be known by workers, which is convenient for workers to adjust, and heat tracing cable 8 is electrically connected with temperature control instrument 16.

[0028] The inside of the temperature control box 15 is fixedly connected with a second temperature sensor, the other side of the top wall of the protection box 1 is fixedly connected with a heater 17, and the heater 17 is connected with the temperature control instrument 16 through a second cable. The setting of the heater 17 makes it convenient for the staff to adjust the temperature of the heat tracing cable 8 in time.

[0029] The bottom end of one side of the inner side wall of the protection box 1 is fixedly connected with a measuring instrument 18, and the inner side wall of the protection box 1 is fixedly connected with two wire holders 19, and the surface of the heat tracing cable 8 penetrates the inside of the wire holder 19. Through the setting of the wire holder 19, the heat tracing cable 8 is fixed in the inside of the protection box 1, avoiding the loosening of the heat tracing cable 8.

[0030] Embodiment two:

[0031] Please refer to Figure 1 , Figure 2 and Figure 4 , the inside of the protection box 1 is provided with a plug-in hole 9, and the surfaces of the first fixed block 2 and the second fixed block 3 penetrate the inside of the plug-in hole 9, the surface of the first fixed block 2 is fixedly connected with a sliding block 10, and the two sides of the inner side wall of the plug-in hole 9 are provided with sliding grooves, and the sliding block 10 is slidingly connected in the inside of the sliding groove, and the bottom end of the instrument pipeline 7 is fixedly connected with a process pipeline 11. Through the setting of the plug-in hole 9, the sliding groove is set, through the setting of the sliding groove, the sliding block 10 is slid into the inside, and then the first fixed block 2 and the second fixed block 3 are convenient to enter the inside of the plug-in hole 9.

[0032] The two sides of the protection box 1 are fixedly connected with two fixed strips 20, the inside of the fixed strip 20 is screwed with a screw, and one side of the surface of the protection box 1 is connected with an access door 22 through a second hinge. Through the setting of the fixed strip 20 and the screw, the protection box 1 can be fixed in a proper position, and the fixing method is simple and convenient, and through the setting of the access door 22, the staff can overhaul the internal structure of the protection box 1.

[0033] The utility model discloses a working principle: the staff pre -open first fixed block 2 and second fixed block 3 certain angle, then heat cable 8 is passed through the arc -shaped groove 4 inside between first fixed block 2 and second fixed block 3, when three heat cable 8 all enter the arc -shaped groove 4 inside, when the staff closes first fixed block 2 and second fixed block 3 through first hinge now, then screw up fastening bolt 6, when the weather of lower temperature is encountered, the staff can control heater 17 work, make its heat cable 8 temperature rise, can monitor instrument pipeline 7's temperature through first temperature sensor 13, and the inside of temperature control instrument 16 is provided with data transmission unit and SIM card, and heat cable 8's temperature information is transported to data transmission unit, and data transmission unit again transports to cloud processing platform through the built -in SIM card in wireless communication mode, then the staff uses the mobile phone terminal APP with network can view heat cable 8 temperature's real -time information, and simultaneously measuring instrument 18 will also detect the temperature of instrument pipeline 7, and the temperature condition will also be transported to the staff mobile phone terminal APP and viewed.

[0034] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A thermal power plant instrument pipeline temperature control device, characterized in that: include: A protective box (1), wherein a first fixed block (2) is passed through the interior of the protective box (1), the first fixed block (2) is hinged to a second fixed block (3) through a first hinge, an arc groove (4) is provided inside the first fixed block (2), a connecting plate (5) is fixedly connected to the top of the first fixed block (2), a fastening bolt (6) is connected to the internal thread of the connecting plate (5), an instrument pipeline (7) is passed through the interior of the protective box (1), and three heating cables (8) are passed through the interior of the protective box (1), and the surface of the heating cables (8) is in contact with the inner wall of the arc groove (4).

2. The thermal power plant instrument pipeline temperature control device according to claim 1, characterized in that: The protective box (1) is provided with a plug-in hole (9), and the surfaces of the first fixed block (2) and the second fixed block (3) pass through the inside of the plug-in hole (9), the surface of the first fixed block (2) is fixedly connected to the sliding block (10), both sides of the inner wall of the plug-in hole (9) are provided with sliding grooves, and the sliding block (10) is slidably connected to the inside of the sliding groove, and the bottom end of the instrument pipeline (7) is fixedly connected to the process pipeline (11).

3. The thermal power plant instrument pipeline temperature control device according to claim 1, characterized in that: A positioning block (12) is fixedly connected to the bottom end of one side of the protection box (1), a threaded hole is provided inside the positioning block (12), and a first temperature sensor (13) passes through the threaded hole.

4. The thermal power plant instrument pipeline temperature control device according to claim 3, characterized in that: The top end of the first temperature sensor (13) is fixedly connected to a connecting column, and the surface of the connecting column is threadedly connected to the inside of the threaded hole. The inside of the first temperature sensor (13) is fixedly connected to a first cable (14), and the surface of the first cable (14) passes through the inside of the connecting column and the protective box (1), respectively.

5. The thermal power plant instrument pipeline temperature control device according to claim 1, characterized in that: A temperature control box (15) is fixedly connected to one side of the inner top wall of the protection box (1), a temperature control instrument (16) is fixedly connected inside the temperature control box (15), and two valves (21) are provided on the surface of the instrument pipeline (7).

6. The thermal power plant instrument pipeline temperature control device according to claim 5, characterized in that: A second temperature sensor is fixedly connected to the interior of the temperature control box (15), a heater (17) is fixedly connected to the other side of the inner top wall of the protection box (1), and the heater (17) is connected to the temperature control instrument (16) via a second cable.

7. The thermal power plant instrument pipeline temperature control device according to claim 1, characterized in that: A measuring instrument (18) is fixedly connected to the bottom end of one side of the inner wall of the protection box (1), two wire fixers (19) are fixedly connected to the inner wall of the protection box (1), and the surface of the heating cable (8) passes through the interior of the wire fixer (19).

8. The thermal power plant instrument pipeline temperature control device according to claim 1, characterized in that: Two fixing bars (20) are fixedly connected to both sides of the protection box (1).

9. The thermal power plant instrument pipeline temperature control device according to claim 8, characterized in that: The internal threads of the fixing strip (20) are penetrated by screws.

10. The thermal power plant instrument pipeline temperature control device according to claim 1, characterized in that: One side of the surface of the protection box (1) is connected to an inspection door (22) via a second hinge.

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