Device for measuring wall temperature of air cooling tube bundle

Abstract

The utility model provides a device for measuring the wall temperature of an air cooling tube bundle. The device comprises a fixed module, a temperature sensing element, a fixed protection device and a lead, the concave arc-shaped structure of the fixing module is matched with the measuring base tube, the fin-shaped structure of the fixing module is matched with the fins of the air cooling tube bundle to be measured, and the fixing module is provided with a horizontally-penetrating temperature sensing element mounting hole and a compression bolt mounting hole; the fixed protection device is used for protecting the fixed module and the temperature sensing element, and fixing the wall temperature measuring device on an air cooling tube bundle fin; the lead leads out a measurement signal of the temperature sensing element to related equipment; according to the air cooling tube bundle wall temperature measuring device, the temperature sensing element of the device is in direct contact with the measured base tube to measure the wall temperature of the base tube, the fixing module transmits the wall temperature of the base tube to the interior of the fixing module and the periphery of the temperature sensing element, the temperature sensing element is wrapped, measurement errors caused by heat exchange between the temperature sensing element and the surrounding environment are avoided, and the measurement accuracy is improved. And the accuracy and reliability of air cooling tube bundle wall temperature monitoring are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air cooling technical field especially relates to air cooling system radiator fin pipe wall temperature measuring device. BACKGROUND

[0002] The air cooling pipe bundle is the main part of the indirect air cooling system, and the problem of freezing and blocking of the air cooling pipe bundle is prone to occur in the cold winter in the northern region, which affects the normal operation of the system. By installing the air cooling pipe bundle wall temperature measuring device to measure the wall temperature of the air cooling pipe bundle and timely adjust the operating parameters of the indirect air cooling system, it is a direct and effective method to prevent the freezing and blocking of the air cooling pipe bundle.

[0003] Chinese authorized patent, patent number 201810823992.6, discloses a kind of air cooling pipe bundle temperature measuring device, the device includes: claw type heat conduction block upper end face and lower end face are respectively provided with recess, wherein upper recess is matched with temperature sensor, lower recess is matched with fin pipe, the temperature sensor is placed in the upper recess, the claw type heat conduction block is placed on the fin pipe through the lower recess;First U type card bottom end is attached to the fin pipe, the first U type card opening end is connected by steel spring, and the steel spring fixes the temperature sensor in the upper recess;Heat-conducting adhesive film is attached to the attachment of the fin pipe and the claw type heat conduction block.

[0004] The above-mentioned patent avoids direct contact between the temperature sensor probe and the indirect air cooling thin-walled base pipe (wall thickness about 1mm), which causes damage to the base pipe. Therefore, the claw type heat conduction block is used to conduct the wall temperature of the base pipe to the area away from the fin and measure it. The claw type heat conduction block of the above-mentioned patent increases the heat conduction path of the temperature measuring device by adding the heat conduction block link, and there is a certain temperature difference between the water temperature and the probe position, which reduces the sensitivity of the temperature sensor. And heat loss occurs during the long path conduction of heat, which reduces the accuracy of the temperature sensor. The utility model discloses a kind of air cooling pipe bundle wall temperature measuring device, temperature sensing element probe is directly contacted with the fin pipe outer wall of air cooling pipe bundle, and avoids excessive extrusion of temperature sensing element probe to base pipe wall by fixed module, to improve measurement accuracy, reduce measurement error and response time, effectively improve the accuracy of air cooling pipe bundle wall temperature monitoring and the reliability of data.

[0005] The Chinese authorized patent with the patent number 2024107699650 discloses a kind of air cooling tube bundle temperature measuring device, the device includes: temperature sensing element, fixed protection device, wire;The fixed protection device includes protection plate, fixed plate, wind shield, protective housing;Protection plate is used to clamp fixed temperature sensing element and wire, fixed plate is used to install the protection plate with inner concave arc at end portion, the end portion inner concave arc of protection plate is matched with the measured finned tube arrangement, wind shield is used to install fixed plate, wind shield is connected and fixed with air cooling tube bundle through the installation hole with fin spacing matched on it, protective housing is connected with wind shield for protecting temperature sensing element, wire exports signal measured by temperature sensing element to relevant equipment;The temperature sensing element of the device is in direct contact with the measured base pipe, measures base pipe wall temperature, wind shield is used to shield ambient wind, avoids measurement error caused by ambient wind directly blowing temperature sensing element, improves the accuracy and reliability of air cooling tube bundle wall temperature monitoring.

[0006] The above patent avoids the error of wall temperature measurement caused by ambient wind temperature by shielding the ambient wind directly blowing the temperature sensing element with the wind shield;Although the above patent has the wind shield to shield the ambient wind, the temperature sensing element is still exposed to the air environment, and there is still heat exchange with the surrounding environment, so that there is still a certain difference between the measurement value of the temperature sensing element and the finned tube wall temperature. SUMMARY

[0007] The utility model discloses a kind of air cooling tube bundle wall temperature measuring devices, by cutting inner concave circular arc treatment in the fixed module of air cooling tube bundle wall temperature measuring device close to the one end of base pipe wall, air cooling tube bundle wall temperature measuring device is installed on air cooling tube bundle, temperature sensing element is in direct contact with the outer wall of base pipe of air cooling tube bundle, fixed module is wrapped, fixed module is conducted to the temperature of pipe wall to its inside and the temperature sensing element around, so that the measurement accuracy of air cooling tube bundle wall temperature measuring device is improved, measurement error is reduced, response time is accelerated, the accuracy and reliability of data of air cooling tube bundle wall temperature monitoring are improved.

[0008] The wall temperature measuring device of air-cooled tube bundle is characterized in that the device comprises a fixing module, a temperature sensing element, a fixing protection device and a wire; the inner concave arc structure of the fixing module is matched with the measuring base tube; the fin structure of the fixing module is matched with the heat conduction fin outside the measured base tube; the middle part of the fixing module is provided with a horizontally penetrating temperature sensing element mounting hole; the top of the fixing module is provided with a pressing bolt mounting hole; the fixing protection device is used to protect the fixing module and the temperature sensing element and fix the wall temperature measuring device to the fin of the air-cooled tube bundle; the wire leads the signal measured by the temperature sensing element to the related equipment.

[0009] The fixing module is provided with a horizontally penetrating temperature sensing element mounting hole and a vertical pressing bolt mounting hole; the temperature sensing element mounting hole is used to insert the temperature sensing element from the back side of the fixing module and extend into the position of the fin tube wall, so that the temperature sensing element directly contacts with the tube wall of the fin tube; the pressing bolt mounting hole is used to fix the temperature sensing element by the pressing bolt after the temperature sensing element is inserted into the reasonable position, so that the insertion depth of the temperature sensing element can be adjusted, which ensures the direct contact between the temperature sensing element and the tube wall of the fin tube and avoids the damage of the tube wall caused by the excessive extrusion of the temperature sensing element.

[0010] The fixing module is provided with a fixing module fin matched with the measured fin tube; the inner concave arc cross section shape of the fixing module fin is circular or elliptical, and the arc is matched with the outer diameter of the fin tube to wrap the tube wall.

[0011] The thickness ts of the fixing module fin needs to be matched with the spacing p of the measured air-cooled tube bundle fin, ts≤p; the fixing module fin and the air-cooled tube bundle fin are engaged with each other to strengthen the heat conduction of the fin tube to the inside of the fixing module and the surrounding of the temperature sensing element.

[0012] The temperature sensing element is inserted into the fixing module, the fixing module can block the environmental wind, and the measurement error caused by the direct blowing of the environmental wind to the temperature sensing element is avoided; the fin of the fixing module conducts the measured tube wall temperature to the surrounding of the temperature sensing element, avoids the heat exchange between the temperature sensing element and the surrounding environment, and further improves the accuracy of the wall temperature measurement.

[0013] The temperature sensing element is a thermal resistance temperature sensing element, a thermocouple temperature sensing element or a digital temperature sensing element; the thermal resistance temperature sensing element is Pt100 or Pt1000 or Cu50 or Cu100; the thermocouple temperature sensing element is K type or J type or T type or E type or R type or S type or N type; the digital temperature sensing element is DS18B20; the wire is connected with the temperature sensing element for data transmission.

[0014] The fixing protection device is used to wrap and protect the fixing module and the temperature sensing element, and fix the wall temperature measuring device to the fin of the air-cooled tube bundle through the mounting hole.

[0015] The center point height of the fixed module fin needs to be set according to the size of the air cooling tube bundle fin; the center point height of the fixed module fin is L, and 0 < L ≤ 10 mm.

[0016] The wall temperature measuring device is installed on the air cooling tube bundle, and the distance between the wall temperature measuring device and the bottom of the air cooling tube bundle is H1, and 0 ≤ H1 ≤ H.

[0017] Compared with the existing technology, the beneficial effects of the air cooling tube bundle wall temperature measuring device are as follows: the air cooling tube bundle wall temperature measuring device is cut and treated with an inner concave arc at one end close to the base pipe wall, is installed on the air cooling tube bundle, the temperature sensing element directly contacts the outer wall of the base pipe of the air cooling tube bundle, the fixed module wraps the temperature sensing element, and the fixed module conducts the pipe wall temperature to the inside of the fixed module and the surrounding of the temperature sensing element; as the problem of air cooling tube bundle icing and blockage in the cold winter in the northern region is increasingly serious, the normal operation of the unit is affected, the existing temperature measuring device is affected by the surrounding environment temperature, and the measurement accuracy of the temperature sensing element is reduced; in order to solve the defects of the existing temperature measuring device, the air cooling tube bundle wall temperature measuring device of the utility model, the temperature sensing element directly contacts the outer wall of the air cooling tube bundle after being inserted into the fixed module, the inner concave arc fin of the fixed module conducts the pipe wall temperature to the inside of the fixed module and the surrounding of the temperature sensing element, the whole temperature sensing element is isolated from the surrounding environment and is in the wall temperature environment, the measurement accuracy is high, the measurement error is reduced, and the accuracy of air cooling tube bundle wall temperature monitoring and the reliability of data are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an assembly view of the air cooling tube bundle wall temperature measuring device.

[0019] Figure 2 It is an installation structure view of the air cooling tube bundle wall temperature measuring device.

[0020] Figure 3 It is an installation schematic view of the air cooling tube bundle wall temperature measuring device on the air cooling tube bundle.

[0021] In the figure: 1 is a fixed module, 2 is a temperature sensing element, 3 is a temperature sensing element mounting hole, 4 is a compression bolt mounting hole, 5 is a fixed protection device, 6 is a fixed bolt mounting hole, 7 is a compression bolt, 8 is a wire, 9 is a wall temperature measuring device, 10 is a base pipe, 11 is a fin, 12 is a temperature sensing element probe. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0023] As Figure 1 , Figure 2 , Figure 3 , shown a wall temperature measuring device of air-cooled tube bundle; the device comprises a fixed module 1, a temperature sensing element 2, a fixed protection device 5, a wire 8; the air-cooled tube bundle comprises a base pipe 10 and a fin 11; the fixed protection device 5 is installed on the fin 11 of the air-cooled tube bundle; the fixed module 1 is in direct contact with the outer wall of the base pipe 10 and the fin 11; the temperature sensing element 2 is inserted into the fixed module 1 and is in direct contact with the outer wall of the base pipe 10; the compression bolt 7 fixes the temperature sensing element 2 through the compression bolt mounting hole 4; the fin 11 of the air-cooled tube bundle is sleeved on the base pipe 10; the gap between two adjacent fins 11 is p; the temperature sensing element 2 is a thermal resistance temperature sensing element or a thermocouple temperature sensing element or a digital temperature sensing element; the thermal resistance temperature sensing element is Pt100 or Pt1000 or Cu50 or Cu100; the thermocouple temperature sensing element is K type or J type or T type or E type or R type or S type or N type; the digital temperature sensing element is DS18B20; the wire 8 is connected with the temperature sensing element 2 for data transmission; the fixed module 1 is provided with an inner concave arc fin, and the cross-sectional shape of the inner concave arc is circular or elliptical; the inner concave arc of the fin of the fixed module 1 is tangent to the cross section of the base pipe 10; the fin thickness ts of the fixed module 1 needs to be matched with the fin spacing p of the measured air-cooled tube bundle, ts≤p; the fixed protection device 5 is provided with a fixed bolt mounting hole 6; the fixed protection device 5 is fixed between the fins of the air-cooled tube bundle through the fixed bolt mounting hole 6; the fin center point height of the fixed module 1 is matched according to the fin size of the air-cooled tube bundle, the center point height of the inner concave arc fin is L, 0

[0024] Example 1 is an air-cooled tube bundle wall temperature measuring device installed on an air-cooled tube bundle.

[0025] As Figure 1 , Figure 2 , Figure 3The wall temperature measuring device for the air-cooled tube bundle includes a fixing module 1, a temperature sensing element 2, a fixing protection device 5, and a wire 8. The air-cooled tube bundle includes a base pipe 10 and a fin 11. The fixing protection device 5 is installed on the fin 11 of the air-cooled tube bundle. The fixing module 1 is in direct contact with the outer wall of the base pipe 10 and the fin 11. The temperature sensing element 2 is inserted into the fixing module 1 and is in direct contact with the outer wall of the base pipe 10. The temperature sensing element 2 is fixed by a compression bolt 7 through a compression bolt mounting hole 4. The air-cooled tube bundle is a vertical heat dissipation tube bundle with six rows of pipes. The height of the air-cooled tube bundle is H, and H=28m. The cross section of the base pipe 10 of the air-cooled tube bundle is circular. The fin 11 of the air-cooled tube bundle is sleeved on the base pipe 10. The gap between two adjacent fins 11 of the air-cooled tube bundle is p, and p=3.5mm. The fin 11 is made of steel. The temperature sensing element 2 is a thermal resistance temperature sensing element Pt100. The wire 8 is connected with the temperature sensing element 2 for data transmission. The fixing module 1 is provided with an inner concave arc fin, and the cross section of the inner concave arc is circular. The inner concave arc of the fin of the fixing module 1 is tangent to the cross section of the base pipe 10. The thickness of the fin of the fixing module 1 is ts, and ts=3.5mm. The fixing protection device 5 is provided with a fixing bolt mounting hole 6. The fixing protection device 5 is fixed between the fins of the air-cooled tube bundle through the fixing bolt mounting hole 6. The center point height of the fin of the fixing module 1 is L, and L=3.0mm. The wall temperature measuring device 9 is installed on the air-cooled tube bundle. The distance between the wall temperature measuring device 9 and the bottom of the air-cooled tube bundle is H1, and H1=1.5m.

[0026] Example 2 is an air-cooled tube bundle wall temperature measuring device installed on an air-cooled tube bundle.

[0027] As Figure 1 , Figure 2 , Figure 3The wall temperature measuring device for the air-cooled tube bundle includes a fixing module 1, a temperature sensing element 2, a fixing protection device 5, and a wire 8. The air-cooled tube bundle includes a base pipe 10 and a fin 11. The fixing protection device 5 is installed on the fin 11 of the air-cooled tube bundle. The fixing module 1 is in direct contact with the outer wall of the base pipe 10 and the fin 11. The temperature sensing element 2 is inserted into the fixing module 1 and is in direct contact with the outer wall of the base pipe 10. The temperature sensing element 2 is fixed by a compression bolt 7 through a compression bolt mounting hole 4. The air-cooled tube bundle is a vertical heat dissipation tube bundle with four rows of pipes. The height of the air-cooled tube bundle is H, and H=14m. The cross section of the base pipe 10 of the air-cooled tube bundle is circular. The fin 11 of the air-cooled tube bundle is sleeved on the base pipe 10. The gap between two adjacent fins 11 of the air-cooled tube bundle is p, and p=3.0mm. The fin 11 is made of aluminum. The temperature sensing element 2 is a thermal resistance temperature sensing element Pt100. The wire 8 is connected with the temperature sensing element 2 for data transmission. The fixing module 1 is provided with an inner concave arc fin, and the cross section of the inner concave arc is circular. The inner concave arc of the fin of the fixing module 1 is tangent to the cross section of the base pipe 10. The thickness of the fin of the fixing module 1 is ts, and ts=3.0mm. The fixing protection device 5 is provided with a fixing bolt mounting hole 6. The fixing protection device 5 is fixed between the fins of the air-cooled tube bundle through the fixing bolt mounting hole 6. The center point height of the fin of the fixing module 1 is L, and L=2.0mm. The wall temperature measuring device 9 is installed on the air-cooled tube bundle. The distance between the wall temperature measuring device 9 and the bottom of the air-cooled tube bundle is H1, and H1=0.3m.

[0028] Example 3 is to install a wall temperature measuring device for the air-cooled tube bundle.

[0029] As Figure 1 , Figure 2 , Figure 3The wall temperature measuring device of the air cooling tube bundle includes a fixing module, a temperature sensing element, a fixing protection device, and a wire, one end of the fixing module of the wall temperature measuring device of the air cooling tube bundle is cut and treated with an inner recessed arc, the wall temperature measuring device of the air cooling tube bundle is installed on the air cooling tube bundle, the temperature sensing element is in direct contact with the outer wall of the base pipe of the air cooling tube bundle, the fixing module wraps the temperature sensing element, and the fixing module conducts the pipe wall temperature to the inside and the periphery of the temperature sensing element; the fin pipe of the air cooling tube bundle is prone to icing and blockage in cold winter, which affects the normal operation of the unit, the temperature sensing element in the existing temperature measuring device is exposed to the air environment, heat exchange exists between the temperature sensing element and the surrounding environment, the measurement value of the temperature sensing element and the fin pipe wall temperature have a certain difference, and the measurement precision of the temperature sensor is reduced; in order to solve the defects of the existing temperature measuring device, the wall temperature measuring device of the air cooling tube bundle, the temperature sensing element is in direct contact with the outer wall of the fin pipe of the air cooling tube bundle after being inserted into the fixing module, the measurement precision is high, the pipe wall temperature is conducted to the inside of the fixing module and the periphery of the temperature sensing element through the fin of the fixing module, the whole temperature sensing element is isolated from the surrounding environment and is in the wall temperature environment, the measurement precision and the sensitivity are ensured, the measurement error is further reduced, and the accuracy of the wall temperature monitoring of the air cooling tube bundle and the reliability of data are improved.

[0030] The wall temperature measuring device of the air cooling tube bundle includes a fixing module, a temperature sensing element, a fixing protection device, and a wire, one end of the fixing module of the wall temperature measuring device of the air cooling tube bundle is cut and treated with an inner recessed arc, the wall temperature measuring device of the air cooling tube bundle is installed on the air cooling tube bundle, the temperature sensing element is in direct contact with the outer wall of the base pipe of the air cooling tube bundle, the fixing module wraps the temperature sensing element, and the fixing module conducts the pipe wall temperature to the inside and the periphery of the temperature sensing element; the fin pipe of the air cooling tube bundle is prone to icing and blockage in cold winter, which affects the normal operation of the unit, the temperature sensing element in the existing temperature measuring device is exposed to the air environment, heat exchange exists between the temperature sensing element and the surrounding environment, the measurement value of the temperature sensing element and the fin pipe wall temperature have a certain difference, and the measurement precision of the temperature sensor is reduced; in order to solve the defects of the existing temperature measuring device, the wall temperature measuring device of the air cooling tube bundle, the temperature sensing element is in direct contact with the outer wall of the fin pipe of the air cooling tube bundle after being inserted into the fixing module, the measurement precision is high, the pipe wall temperature is conducted to the inside of the fixing module and the periphery of the temperature sensing element through the fin of the fixing module, the whole temperature sensing element is isolated from the surrounding environment and is in the wall temperature environment, the measurement precision and the sensitivity are ensured, the measurement error is further reduced, and the accuracy of the wall temperature monitoring of the air cooling tube bundle and the reliability of data are improved.

[0031] The basic principle, main features and advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application, and any reference signs in the claims should not be considered as limiting the claims.

[0032] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. An air-cooled tube bundle wall temperature measuring device, characterized by: The device comprises a fixing module, a temperature sensing element, a fixing protection device, and a wire; the end of the fixing module is in direct contact with the pipe wall of the finned tube, and the inside is wrapped with the temperature sensing element, which is used to strengthen the conduction of the measured finned tube wall temperature to the inside and the surroundings of the temperature sensing element, so as to avoid the heat exchange between the temperature sensing element and the surroundings, prevent measurement error, and ensure the temperature measurement accuracy of the temperature sensing element; the temperature sensing element is in direct contact with the pipe wall of the finned tube, which is used to measure the base pipe wall temperature; the fixing protection device is used to fix the temperature sensing element on the finned tube; the wire leads the signal measured by the temperature sensing element to the related equipment.

2. The wall temperature measurement device for an air-cooled tube bundle according to claim 1, characterized by: A horizontally-through temperature sensing element mounting hole and a vertical pressing bolt mounting hole are arranged on the fixing module; the temperature sensing element mounting hole is used to insert the temperature sensing element from the back side of the fixing module, and extend into the position of the finned tube pipe wall, so that the temperature sensing element is in direct contact with the pipe wall of the finned tube.

3. A wall temperature measurement device for an air-cooled tube bundle according to claim 2, wherein: The pressing bolt mounting hole is used to fix the temperature sensing element by the pressing bolt after the temperature sensing element is inserted into the reasonable position, so that the insertion depth of the temperature sensing element can be adjusted, which ensures the direct contact between the temperature sensing element and the pipe wall of the finned tube, and avoids the damage of the pipe wall caused by excessive extrusion of the temperature sensing element.

4. The apparatus of claim 1, wherein: A fixing module fin is arranged on the fixing module and matched with the measured finned tube; the inner concave arc cross section shape of the fixing module fin is circular or elliptical, and the arc is matched with the outer diameter of the finned tube, which is used to wrap the pipe wall.

5. A wall temperature measurement device for an air-cooled tube bundle as defined in claim 4, characterized in that: The thickness ts of the fixing module fin needs to be matched with the fin spacing p of the measured air cooling tube bundle, ts≤p; the fixing module fin and the air cooling tube bundle fin are engaged with each other, which is used to strengthen the conduction of the heat of the finned tube to the inside of the fixing module and the surroundings of the temperature sensing element.

6. The apparatus of claim 1, wherein: The temperature sensing element is inserted into the fixing module, the fixing module can block the environmental wind, and avoid the measurement error caused by the direct blowing of the environmental wind to the temperature sensing element; the fin of the fixing module conducts the measured pipe wall temperature to the surroundings of the temperature sensing element, avoids the heat exchange between the temperature sensing element and the surroundings, prevents measurement error, and further improves the accuracy of the wall temperature measurement.

7. The apparatus of claim 1, wherein: The temperature sensing element is a thermal resistance temperature sensing element, a thermocouple temperature sensing element, or a digital temperature sensing element; the thermal resistance temperature sensing element is Pt100 or Pt1000 or Cu50 or Cu100; the thermocouple temperature sensing element is K type or J type or T type or E type or R type or S type or N type; the digital temperature sensing element is DS18B20; the wire is connected with the temperature sensing element, which is used for data transmission.

8. The apparatus of claim 1, wherein: The fixing protection device is used to wrap and protect the fixing module and the temperature sensing element, and fix the wall temperature measuring device to the air cooling tube bundle fin through the mounting hole.

9. The apparatus of claim 4, wherein: The center point height of the fixing module fin needs to be matched with the size of the air cooling tube bundle; the center point height of the fixing module fin is L, 0 10. The apparatus of claim 1, wherein: The device is installed on the air cooling tube bundle; the distance between the temperature sensing element and the bottom of the air cooling tube bundle is H1, 0

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