An ambient temperature measuring device with adaptive adjustment function

Abstract

The present invention discloses an environmental temperature measuring device with an adaptive adjustment function, which relates to the field of temperature measurement technology. The device comprises a tank body, and one end of the tank body is open, and the open end of the tank body faces cooling water; a partition is arranged inside the tank body, and the partition divides the inside of the tank body into an upper chamber and a lower chamber; a temperature measuring unit is installed in the center of the partition, and the detection end of the temperature measuring unit faces the open end of the tank body; the open end of the tank body is immersed in the cooling water in a vertical direction downward, and the interior of the lower chamber is filled with air, thereby preventing the cooling water from contacting the temperature measuring unit. By installing the temperature measuring unit inside the tank body, and when detecting the temperature, the bottom opening of the tank body is facing the water surface, and then when the tank body enters the cooling water, air is always kept inside the tank body, thereby avoiding direct contact between the temperature measuring unit and the cooling water, avoiding scaling on the surface of the temperature measuring unit due to contact with water, and ensuring the accuracy of temperature detection by the temperature measuring unit.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature measurement, in particular to an environment temperature measurement device with self-adaptive adjustment function. Background Art

[0002] In coal-fired power plants, nuclear power plants, and combined-cycle gas turbine units, heat from low-temperature heat sources must be continuously removed through a cooling medium to maintain a closed cycle. As the core heat transfer medium in a power plant's energy conversion system, cooling water fulfills the dual functions of ensuring both thermal cycle efficiency and safe equipment operation. Because the cold-end parameters of the turbine exhaust condensation process are highly sensitive to temperature fluctuations, cooling water temperature directly impacts Rankine cycle efficiency—fluctuations in these values ​​can lead to significant changes in turbine backpressure and standard coal consumption. Therefore, establishing an accurate cooling water temperature monitoring system is a key control link in optimizing unit operating efficiency.

[0003] In power plant cooling water temperature monitoring systems, thermocouples serve as core sensing elements. Their measurement accuracy and stability directly impact the control efficiency of the thermal system. Due to significant thermal stratification in the cooling water circulation system, water temperatures at different depths can reach critical operating thresholds. Therefore, the depth of the thermocouple's immersion into the cooling medium must be dynamically adjusted to accurately capture the cooling medium's actual thermodynamic state. However, in actual operation, the presence of calcium, magnesium, and dissolved oxygen in the cooling water can cause multiple scaling events, impacting the thermocouple's detection accuracy. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the existing temperature measuring device is immersed in water for a long time, causing scaling on the surface, which affects the temperature detection accuracy.

[0005] The above technical problem is solved by the following technical solution: The present invention provides an ambient temperature measuring device with an adaptive adjustment function, comprising a tank body, and one end of the tank body is open, and the open end of the tank body faces the cooling water;

[0006] a partition disposed inside the tank body, the partition dividing the interior of the tank body into an upper chamber and a lower chamber;

[0007] A temperature measuring unit is installed at the center of the partition, with the detection end of the temperature measuring unit facing the opening end of the tank body;

[0008] The side wall of the upper chamber is provided with a first air hole;

[0009] The side wall of the lower chamber is provided with a second air hole;

[0010] The upper chamber is connected to the lower chamber via a connecting pipe;

[0011] One end of the connecting tube is connected to the first air hole, and the other end is connected to the second air hole;

[0012] The upper chamber and the lower chamber maintain pressure balance through the connecting pipe;

[0013] The open end of the tank body is downwardly immersed in cooling water in a vertical direction, and the interior of the lower chamber is filled with air to prevent the cooling water from contacting the temperature measuring unit.

[0014] In a preferred embodiment of the ambient temperature measuring device with adaptive adjustment function of the present invention: a mounting plate is provided inside the upper chamber, and a telescopic rod is installed at one end of the mounting plate facing the opening of the tank body;

[0015] The bottom of the telescopic rod is connected with a partition.

[0016] In a preferred embodiment of the ambient temperature measuring device with adaptive adjustment function of the present invention, it further includes:

[0017] A lifting unit, comprising a screw, a threaded sleeve arranged at the center of the screw, a driving member arranged outside the threaded sleeve, a coupling arranged at the end of the screw, and a plug connected to the coupling;

[0018] The plug is connected to the tank body.

[0019] In a preferred embodiment of the ambient temperature measuring device with adaptive adjustment function of the present invention: a first pressure sensor and a second pressure sensor are respectively provided on both sides of the end surface of the partition;

[0020] The first pressure sensor is used to monitor the pressure inside the upper chamber;

[0021] The second pressure sensor is used to monitor the pressure inside the lower chamber.

[0022] In a preferred embodiment of the ambient temperature measuring device with adaptive adjustment function of the present invention: the liquid level of the cooling water in the lower chamber rises as the tank body is positioned at the cooling water depth;

[0023] The cooling water inside the lower chamber can block the second air hole, thereby isolating the connecting pipe;

[0024] The upper chamber external gas supply unit injects gas into the upper chamber;

[0025] When there is a pressure difference between the upper chamber and the lower chamber, gas is added into the upper chamber to increase its internal pressure, thereby causing the liquid level of the cooling water in the lower chamber to move below the second air hole.

[0026] In a preferred embodiment of the ambient temperature measuring device with self-adaptive adjustment function of the present invention: a filter is provided at the bottom of the lower chamber.

[0027] The beneficial effect of the present invention is that by installing the temperature measuring unit inside the tank body, and when detecting the temperature, the bottom opening of the tank body is facing the water surface, and then in the process of the tank body entering the cooling water, air is always kept inside the tank body, thereby avoiding direct contact between the temperature measuring unit and the cooling water, avoiding scaling on the surface of the temperature measuring unit, and ensuring the accuracy of temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0029] Figure 1 The figure shows the overall structure of a temperature measuring device with adaptive adjustment function;

[0030] Figure 2 A top view of a temperature measuring device with an adaptive adjustment function is shown;

[0031] Figure 3 Shown Figure 2 The sectional view at AA in FIG;

[0032] Figure 4 A bottom view of the tank is shown;

[0033] Figure 5 Shown Figure 4 Cross-sectional view at BB in FIG;

[0034] Figure 6 Shows a schematic diagram of the three-dimensional structure of the tank;

[0035] Figure 7 A schematic diagram of the explosion structure of the tank and the partition is shown;

[0036] Figure 8 A schematic diagram of the air flow inside the tank is shown.

[0037] In the figure: 11, tank body; 111, upper chamber; 1111, mounting plate; 1112, first air hole; 112, lower chamber; 1122, second air hole; 1123, filter; 12, partition; 13, temperature measuring unit; 14, telescopic rod; 15, connecting pipe; 2, lifting unit; 21, screw; 22, threaded sleeve; 23, driving part; 24, coupling; 25, plug; 31, first pressure sensor; 32, second pressure sensor. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0039] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0040] Reference Figures 1 to 3 The present embodiment provides an environmental temperature measuring device with an adaptive adjustment function, including a tank body 11, and one end of the tank body 11 is open, and the open end of the tank body 11 faces the cooling water; the tank body 11 is mainly to ensure that there is a certain amount of air inside the tank body 11, so that when the tank body 11 is immersed in the cooling water, the cooling water will not directly enter the interior of the tank body 11, and the material of the tank body 11 is preferably stainless steel, which effectively prevents the side wall of the tank body 11 from being damaged by corrosion.

[0041] The partition 12 is arranged inside the tank body 11. The partition 12 divides the interior of the tank body 11 into an upper chamber 111 and a lower chamber 112. The partition 12 is composed of a middle supporting part and a sealing part arranged at the edge position; the sealing part is preferably rubber, and the sealing part contacts the inner wall of the tank body 11, and the tank body 11 can be separated into an upper chamber 111 and a lower chamber 112 through the partition 12.

[0042] Furthermore, in order to facilitate the installation of the partition 12 inside the tank body 11, the tank body 11 is assembled into a main structure by bolt connection; and the tank body 11 is provided with a sealing gasket at the bolt connection to ensure the sealing of the entire tank body 11.

[0043] The temperature measuring unit 13 is installed in the center position of the partition 12, and the detection end of the temperature measuring unit 13 is facing the open end of the tank body 11; the temperature measuring unit 13 is passed through the supporting part in the middle of the partition 12, and the connection between the temperature measuring unit 13 and the partition 12 is sealed with sealant to ensure that the interior of the upper chamber 111 and the lower chamber 112 are completely separated.

[0044] The temperature measuring unit 13 is also connected to a wire, which is located inside the tank body 11 and ensures that the wire has sufficient length to adapt to the movement of the temperature measuring unit 13 inside the tank body 11; the wire connecting the temperature measuring unit 13 passes through the tank body 11 and is connected to the display screen to ensure that the detection data can be viewed by the staff in real time, and the position where the wire passes through the tank body 11 is also sealed.

[0045] It should be noted that, in this embodiment, the temperature measuring unit 13 is preferably an infrared thermometer, which measures the temperature of the cooling water without contacting water, effectively avoiding scaling on the surface of the temperature measuring unit 13 due to contact with water, thereby affecting the accuracy of temperature measurement.

[0046] In the process of testing the cooling water temperature, the staff drives the tank body 11 opening downward into the cooling water through the pneumatic telescopic rod. When the bottom opening of the tank body 11 contacts the surface of the cooling water, the cooling water cannot completely enter the tank body 11 due to the air inside the tank body 11, thereby ensuring that a certain space is left inside the tank body 11 to separate from the cooling water; thereby preventing the temperature measuring unit 13 from contacting the cooling water, and then detecting the surface temperature of the cooling water through the temperature measuring unit 13 and recording it; then continue to drive the tank body 11 downward; so that the tank body 11 enters the cooling water At a position where the water is deeper, the water pressure continues to increase during the descending process of the tank body 11. At this time, the air pressure inside the tank body 11 is less than the water pressure, and a part of the cooling water enters the tank body 11 along the bottom opening of the tank body 11; while entering the tank body 11, the cooling water compresses the air inside the lower chamber 112, so that the pressure inside the lower chamber 112 is greater than the air inside the upper chamber 111, thereby causing the partition 12 to move toward the closed end of the tank body 11; while the partition 12 moves, it will also drive the temperature measuring unit 13 to move, avoiding contact between the temperature measuring unit 13 and the cooling water.

[0047] Reference Figures 4 to 7 As an optional embodiment, a mounting plate 1111 is provided inside the upper chamber 111 , a telescopic rod 14 is installed at the opening end of the mounting plate 1111 facing the tank body 11 ; and a partition 12 is connected to the bottom of the telescopic rod 14 .

[0048] In this embodiment, under normal conditions, in order to prevent the partition 12 from contacting the bottom of the tank body 11 under the action of gravity, causing the temperature measuring unit 13 to detect the wear of the lens, the telescopic rod 14 is connected to the partition 12 to effectively limit the movement trajectory of the partition 12, thereby ensuring that the partition 12 will not contact the inner wall of the bottom of the tank body 11. In this embodiment, the bottom of the tank body 11 is the open end of the tank body 11.

[0049] Furthermore, in order to avoid a pressure difference between the upper chamber 111 and the lower chamber 112, which causes the partition 12 to move unsteadily, it is necessary to connect the upper chamber 111 and the lower chamber 112; a first air hole 1112 is opened on the side wall of the upper chamber 111; a second air hole 1122 is opened on the side wall of the lower chamber 112; the upper chamber 111 and the lower chamber 112 are connected through a connecting pipe 15; one end of the connecting pipe 15 is connected to the first air hole 1112, and the end of the connecting pipe 15 away from the first air hole 1112 is connected to the second air hole 1122; the upper chamber 111 and the lower chamber 112 maintain pressure balance through the connecting pipe 15.

[0050] It should be noted that a first air hole 1112 is provided on the side wall of the upper chamber 111, and a second air hole 1122 is provided on the side wall of the lower chamber 112, and the two groups of air holes are connected through a connecting pipe 15; when the upper chamber 111 is connected to the lower chamber 112, when cooling water enters the lower chamber 112, causing the internal space of the lower chamber 112 to decrease and the pressure to increase, at this time, the partition 12 moves toward the upper chamber 111 and compresses the air inside the upper chamber 111, so that the air inside the upper chamber 111 enters the lower chamber 112 to maintain the balance between the interior of the tank body 11 and the water pressure; thereby effectively avoiding the vibration caused by the pressure difference and affecting the measurement accuracy of the temperature measuring equipment.

[0051] Furthermore, the partition 12 can drive the temperature measuring unit 13 to move during the movement. As the partition 12 moves toward the upper chamber 111, the temperature measuring unit 13 is always ensured not to contact the cooling water during the movement.

[0052] Reference Figures 1 to 3 In one embodiment provided by the present invention, the lifting unit 2 is used to drive the tank body 11 to move in the vertical direction; the lifting unit 2 includes a screw 21, and the length of the screw 21 meets the requirements of measuring the cooling water temperature at different depths, that is, the screw 21 can drive the tank body 11 to move from the cooling water surface to a deeper position at the bottom of the cooling water; a threaded sleeve 22 is provided in the center of the screw 21, and the threaded sleeve 22 cooperates with the screw 21, and the screw 21 can be driven to move in the vertical direction by rotating the threaded sleeve 22; a driving member 23 is provided on the outside of the threaded sleeve 22, and the driving member 23 can be a worm gear transmission, and the threaded sleeve 22 is provided inside the worm gear, and then the worm is driven to rotate by the motor, thereby driving the threaded sleeve 22 provided inside the worm gear to rotate; the screw 21 is driven to move in the vertical direction by the rotation of the threaded sleeve 22.

[0053] In order to ensure that the device can be set on the surface of the cooling water, a floating platform is set on the surface of the cooling water, and the threaded sleeve 22 is installed on the surface of the floating platform by bolts; a bearing is set on the outside of the threaded sleeve 22, and the bearing is installed inside the bearing frame, and the bearing frame is fixedly connected to the floating platform.

[0054] Furthermore, a coupling 24 is provided at the end of the screw 21 near the tank body 11, and the coupling 24 is connected to the plug 25; the plug 25 can move synchronously with the coupling 24, and the plug 25 and the tank body 11 are connected and fixed by bolts. When the screw 21 moves in the vertical direction, it can synchronously drive the tank body 11 to move, thereby changing the position of the tank body 11 at different depths of the cooling water, thereby ensuring the accuracy of the cooling water temperature detection.

[0055] Reference Figure 7In some embodiments, a first pressure sensor 31 and a second pressure sensor 32 are respectively provided on both sides of the end surface of the partition 12; the first pressure sensor 31 is used to monitor the pressure inside the upper chamber 111; the second pressure sensor 32 is used to monitor the pressure inside the lower chamber 112.

[0056] In order to further facilitate the staff to understand the pressure inside the upper chamber 111 and the lower chamber 112, a first pressure sensor 31 and a second pressure sensor 32 are respectively installed on the two side end faces of the partition 12; the pressure conditions displayed by the first pressure sensor 31 can also effectively reversely adjust the cooling water pressure.

[0057] It should be noted that the first pressure sensor 31 and the second pressure sensor 32 are of the same model, and are preferably optical fiber pressure sensors.

[0058] Furthermore, as the depth of the tank body 11 continues to increase, the pressure of the cooling water gradually increases, causing the liquid level inside the lower chamber 112 to gradually rise. The cooling water level inside the lower chamber 112 increases as the depth of the tank body 11 in the cooling water increases; when the tank body 11 descends to a certain height, the height of the cooling water entering the lower chamber 112 is sufficient to block the second air hole 1122, so that the air flow channels of the upper chamber 111 and the lower chamber 112 are disconnected.

[0059] At this time, the pressure inside the upper chamber 111 and the lower chamber 112 are different. The pressure difference between the upper chamber 111 and the lower chamber 112 is determined by the pressure signals transmitted by the first pressure sensor 31 and the second pressure sensor 32. The pressure difference is then fed back to the control system, and the control system controls the external air supply unit of the upper chamber 111 to rush high-pressure gas into the upper chamber 111. It should be noted that the air supply unit is preferably an air pump.

[0060] High-pressure gas is added to the upper chamber 111 so that the pressure inside the upper chamber 111 is greater than the cooling water pressure, thereby causing the partition 12 to move toward the lower chamber 112; and then the cooling water inside the connecting pipe 15 is discharged; thereby ensuring that the upper chamber 111 and the lower chamber 112 are restored to a pressure equilibrium state.

[0061] When the internal pressures of the upper chamber 111 and the lower chamber 112 are in equilibrium, the pressure difference between the upper chamber 111 and the lower chamber 112 disappears, and the two sets of pressure sensors cannot detect the pressure difference signal, and the control system turns off the air pump and no longer pumps high-pressure gas into the upper chamber 111.

[0062] Furthermore, a filter screen 1123 is provided at the bottom of the lower chamber 112, which can effectively isolate impurities in the cooling water, preventing impurities from entering the tank body 11 and adhering to the inner wall of the tank body 11, causing inconvenience in the movement of the partition 12.

[0063] It should be noted that the internal filter mesh 1123 is mainly used to filter larger sand and gravel impurities. When the tank body 11 is turned upside down and placed in water, no water film can be formed between the pores and the water; thereby ensuring that the cooling water can pass through the filter mesh 1123 and enter the interior of the tank body 11.

[0064] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

[0065] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An ambient temperature measuring device with adaptive adjustment function, characterized in that: include, A tank body (11), wherein one end of the tank body (11) is open, and the open end of the tank body (11) faces the cooling water; A partition (12) is disposed inside the tank body (11), and the partition (12) divides the inside of the tank body (11) into an upper chamber (111) and a lower chamber (112); A temperature measuring unit (13) is installed at a central position of the partition (12), with a detection end of the temperature measuring unit (13) facing the opening end of the tank body (11); A first air hole (1112) is formed on the side wall of the upper chamber (111); A second air hole (1122) is provided on the side wall of the lower chamber (112); The upper chamber (111) and the lower chamber (112) are connected via a connecting pipe (15); One end of the connecting tube (15) is connected to the first air hole (1112), and the other end is connected to the second air hole (1122); The upper chamber (111) and the lower chamber (112) maintain pressure balance via the connecting pipe (15); The open end of the tank body (11) is downwardly immersed in cooling water in a vertical direction, and the interior of the lower chamber (112) is filled with air to prevent the cooling water from contacting the temperature measuring unit (13); A mounting plate (1111) is provided inside the upper chamber (111), and a telescopic rod (14) is installed at one end of the mounting plate (1111) that faces the opening of the tank body (11); The bottom of the telescopic rod (14) is connected to a partition (12).

2. The ambient temperature measuring device with adaptive adjustment function according to claim 1, characterized in that: Also includes, A lifting unit (2) comprising a screw (21), a threaded sleeve (22) arranged at a central position of the screw (21), a driving member (23) arranged outside the threaded sleeve (22), a coupling (24) arranged at an end of the screw (21), and a plug (25) connected to the coupling (24); The plug (25) is connected to the tank body (11).

3. The ambient temperature measuring device with adaptive adjustment function according to claim 2, characterized in that: A first pressure sensor (31) and a second pressure sensor (32) are respectively provided on both sides of the end surface of the partition (12); The first pressure sensor (31) is used to monitor the pressure inside the upper chamber (111); The second pressure sensor (32) is used to monitor the pressure inside the lower chamber (112).

4. The environmental temperature measurement device with adaptive adjustment function according to claim 3, characterized in that: The liquid level of the cooling water in the lower chamber (112) rises as the tank body (11) is located at the cooling water depth; The cooling water inside the lower chamber (112) can block the second air hole (1122), thereby isolating the connecting pipe (15).

5. The environmental temperature measuring device with adaptive adjustment function according to claim 4, characterized in that: The upper chamber (111) is connected to an external gas supply unit to inject gas into the interior of the upper chamber (111); When there is a pressure difference between the upper chamber (111) and the lower chamber (112), gas is added into the upper chamber (111) to increase its internal pressure, thereby causing the liquid level of the cooling water in the lower chamber (112) to move below the second air hole (1122).

6. The environmental temperature measurement device with adaptive adjustment function according to claim 5, characterized in that: A filter screen (1123) is provided at the bottom of the lower chamber (112).

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