Explosion-proof temperature sensor

Abstract

The utility model discloses an explosion-proof temperature sensor comprising an explosion-proof temperature sensor housing, the top of the explosion-proof temperature sensor housing is fixedly provided with a junction box, and the bottom of the explosion-proof temperature sensor housing is fixedly connected with an installation rod. Meanwhile, a flange is fixedly arranged at one end, far away from the explosion-proof temperature sensor shell, of the mounting rod, a temperature detection sleeve is fixedly connected to the bottom of the flange, a buffer cylinder wraps the outer side of the temperature detection sleeve, and a buffer hole is formed in the surface of the buffer cylinder. According to the explosion-proof temperature sensor, a medium firstly impacts on the outer side of the buffer cylinder, the medium impacts on the outer side surface of the buffer cylinder to slow down, and meanwhile, water flow enters the buffer hole and impacts downwards, so that the medium is prevented from linearly flowing and impacting on the outer side surface of the temperature detection sleeve; and buffering can be achieved when a linearly flowing medium impacts on the outer side surface of the temperature detection sleeve, and buffering protection work on the temperature detection sleeve is achieved.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof temperature sensors, in particular to an explosion-proof temperature sensor. Background Art

[0002] Explosion-proof temperature sensors sense temperature changes in the object being measured through a temperature sensing element and utilize a special explosion-proof design to ensure safe use in flammable and explosive environments. Different types of explosion-proof temperature sensors may use different temperature detection methods and explosion-proof technologies, but their common goal is to accurately measure temperature in hazardous environments while ensuring the safety of personnel and equipment. When the temperature rises, the resistance value of the thermal resistor in the explosion-proof temperature sensor will increase accordingly. The thermal resistor element inside the sensor contacts the object being measured, and the temperature of the object being measured is determined by measuring the resistance value of the thermal resistor and then determining the temperature based on the corresponding relationship between the resistance value and the temperature.

[0003] The detection probe at the bottom of the explosion-proof temperature sensor is inserted into the interior of the measured medium, and the outer side of the detection probe is wrapped with a sleeve. When the sleeve is in use, it is subjected to high-speed impact from the medium, resulting in excessive load and stress exceeding the sleeve's limit, causing it to rupture, seriously affecting the safe operation of the production machine. Utility Model Content

[0004] The purpose of the present utility model is to provide an explosion-proof temperature sensor to solve the defect mentioned in the above background technology that the outer wrapping sleeve of the detection probe is subjected to high-speed impact of the medium when in use, resulting in excessive load and stress exceeding the limit of the sleeve, resulting in rupture.

[0005] To achieve the above-mentioned purpose, an explosion-proof temperature sensor is provided, comprising an explosion-proof temperature sensor housing, a junction box fixedly installed on the top of the explosion-proof temperature sensor housing, and a mounting rod fixedly connected to the bottom of the explosion-proof temperature sensor housing, and a flange fixedly provided on the end of the mounting rod away from the explosion-proof temperature sensor housing, and a temperature detection sleeve connected to a fixed bottom of the flange, a buffer cylinder wrapped around the outside of the temperature detection sleeve, and a buffer hole opened on the surface of the buffer cylinder, and a fixing cylinder welded and fixed to the top of the buffer cylinder, and the fixing cylinder is fixed to the bottom surface of the flange.

[0006] Preferably, the junction box on the top of the explosion-proof temperature sensor housing is an explosion-proof junction box, and the bottom of the junction box is fixedly connected to the temperature detection sleeve via a mounting rod.

[0007] Preferably, a plurality of mounting holes are evenly provided on the surface of the flange, and the axial cross-sections of the flange, the buffer cylinder and the temperature inspection sleeve are concentric circle structures.

[0008] Preferably, a plurality of groups of buffer holes are evenly provided on the surface of the buffer cylinder, and the distance between two adjacent groups of buffer holes is consistent, and the bottom of the buffer cylinder is open.

[0009] Preferably, the buffer holes are arranged to be tilted downward, and the tilt angle of the buffer holes is 60°, and multiple groups of buffer holes are arranged through the side wall of the buffer cylinder.

[0010] Preferably, connecting seats are fixedly installed on both sides of the top of the fixing cylinder, and the connecting seats are arranged in an arc shape as a whole. At the same time, two sets of fixing bolts are evenly installed on the connecting seats, and the fixing bolts pass through the through holes opened on the connecting seats and are screwed to the inside of the screw holes opened at the bottom of the flange.

[0011] Preferably, the length of the buffer tube is greater than the length of the temperature inspection sleeve, and the thickness of the buffer tube is 0.4 cm.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The utility model wraps a buffer cylinder around the outside of the temperature inspection sleeve. The buffer cylinder is installed as follows: hold the buffer cylinder and sleeve the fixing cylinder on the top of the buffer cylinder onto the outside of the temperature inspection sleeve. At this time, the connecting seat covers the bottom of the flange, and uses a fixing bolt to pass through the through-hole opened on the connecting seat and screw it into the screw hole opened at the bottom of the flange to complete the positioning and installation of the buffer cylinder on the outside of the temperature inspection sleeve, ensuring that the temperature inspection sleeve will not loosen when it is impacted inside the pipeline;

[0014] 2. The utility model evenly opens multiple groups of buffer holes on the outer surface of the temperature inspection sleeve. The buffer holes are arranged to be inclined downward and the inclination angle of the buffer holes is 60°. When the medium flows at high speed inside the pipeline and impacts the outer surface of the temperature inspection sleeve, the medium first impacts the outside of the buffer cylinder. The medium hits the outer surface of the buffer cylinder to slow down. At the same time, the water flows into the inside of the buffer holes and impacts downward, avoiding the straight flow of the medium to impact the outer surface of the temperature inspection sleeve. The straight flow of the medium can be buffered between the impacts on the outer surface of the temperature inspection sleeve, thereby achieving buffering protection for the temperature inspection sleeve and improving the service life of the temperature inspection sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a bottom view of the structure of the utility model;

[0017] Figure 3 It is a top view of the structure of the utility model;

[0018] Figure 4 Schematic diagram of the cross section of the buffer cylinder.

[0019] Numbers in the figure: 1. Explosion-proof temperature sensor housing; 11. Junction box; 2. Mounting rod; 3. Flange; 4. Fixing cylinder; 5. Connecting seat; 6. Fixing bolt; 7. Buffer cylinder; 8. Buffer hole; 9. Temperature inspection sleeve. DETAILED DESCRIPTION

[0020] See also Figure 1-4 The utility model provides an explosion-proof temperature sensor, including an explosion-proof temperature sensor housing 1, a junction box 11 is fixedly installed on the top of the explosion-proof temperature sensor housing 1, and a mounting rod 2 is fixedly connected to the bottom of the explosion-proof temperature sensor housing 1, and a flange 3 is fixedly provided on the end of the mounting rod 2 away from the explosion-proof temperature sensor housing 1, and the bottom of the flange 3 is connected to a fixed temperature detection sleeve 9, the outer side of the temperature detection sleeve 9 is wrapped with a buffer tube 7, and a buffer hole 8 is opened on the surface of the buffer tube 7, and a fixing tube 4 is welded and fixed to the top of the buffer tube 7, and the fixing tube 4 is fixedly provided on the bottom surface of the flange 3.

[0021] As can be seen from the above, when the temperature inspection sleeve 9 is inserted into the detection pipe, the flange 3 covers the surface of the pipe and is sealed by the sealing gasket. At this time, the flange 3 is fixedly installed by fixing bolts, and the outside of the temperature inspection sleeve 9 is wrapped with a buffer cylinder 7. The installation method of the buffer cylinder 7 is: hold the buffer cylinder 7, and sleeve the fixing cylinder 4 on the top of the buffer cylinder 7 on the outside of the temperature inspection sleeve 9. At this time, the connecting seat 5 covers the bottom of the flange 3, and uses the fixing bolts 6 to pass through the through-holes opened on the connecting seat 5 and screw them to the inside of the screw holes opened at the bottom of the flange 3 to complete the positioning and installation of the buffer cylinder 7 on the outside of the temperature inspection sleeve 9, ensuring that the temperature inspection sleeve 9 will not loosen when it is impacted inside the pipeline.

[0022] As a preferred embodiment, the junction box 11 on the top of the explosion-proof temperature sensor housing 1 is an explosion-proof junction box, and the bottom of the junction box 11 is fixedly connected to the temperature detection sleeve 9 through the mounting rod 2.

[0023] As a preferred embodiment, multiple groups of mounting holes are evenly opened on the surface of the flange 3, and the axial cross-sections of the flange 3, the buffer cylinder 7 and the temperature detection sleeve 9 are concentric circle structures.

[0024] As a preferred embodiment, a plurality of groups of buffer holes 8 are evenly provided on the surface of the buffer cylinder 7 , and the distance between two adjacent groups of buffer holes 8 is consistent. Meanwhile, the bottom of the buffer cylinder 7 is open.

[0025] As a preferred embodiment, the buffer holes 8 are arranged to be tilted downward, and the tilt angle of the buffer holes 8 is 60°. At the same time, multiple groups of buffer holes 8 are arranged through the side wall of the buffer tube 7.

[0026] As can be seen from the above, when in use, multiple groups of buffer holes 8 are evenly opened on the outer surface of the temperature inspection sleeve 9, and the distance between two adjacent groups of buffer holes 8 is the same. The buffer holes 8 are set to be tilted downward and the inclination angle of the buffer holes 8 is 60°. When the medium flows at high speed inside the pipeline and impacts the outer surface of the temperature inspection sleeve 9, the medium first impacts the outside of the buffer cylinder 7. The medium hits the outer surface of the buffer cylinder 7 to slow down. At the same time, the water flows into the inside of the buffer hole 8 and impacts downward to avoid the straight flow of the medium impacting the outer surface of the temperature inspection sleeve 9. The straight flow of the medium can be buffered between the impacts on the outer surface of the temperature inspection sleeve 9, thereby achieving buffering protection for the temperature inspection sleeve 9 and improving the service life of the temperature inspection sleeve 9; the buffer cylinder 7 is set in a tubular shape, which can buffer the flow medium from different directions inside the pipeline.

[0027] As a preferred embodiment, connecting seats 5 are fixedly installed on both sides of the top of the fixing cylinder 4, and the connecting seats 5 are arranged in an arc shape as a whole. At the same time, two sets of fixing bolts 6 are evenly installed on the connecting seats 5, and the fixing bolts 6 pass through the through holes opened on the connecting seat 5 and are screwed to the inside of the screw holes opened at the bottom of the flange 3.

[0028] As a preferred embodiment, the length of the buffer tube 7 is greater than the length of the temperature detection sleeve 9, and the thickness of the buffer tube 7 is 0.4 cm.

[0029] Working principle: When in use, first insert the temperature detection sleeve 9 into the detection pipe. At this time, the flange 3 covers the surface of the pipe and is sealed by a sealing gasket. At this time, the flange 3 is fixed and installed by fixing bolts. The outside of the temperature detection sleeve 9 is wrapped with a buffer cylinder 7. The installation method of the buffer cylinder 7 is: hold the buffer cylinder 7, and put the fixed cylinder 4 on the top of the buffer cylinder 7 on the outside of the temperature detection sleeve 9. At this time, the connecting seat 5 covers the bottom of the flange 3, and uses the fixing bolts 6 to pass through the through-holes opened on the connecting seat 5 and screw it to the inside of the screw hole opened at the bottom of the flange 3 to complete the positioning and installation of the buffer cylinder 7 on the outside of the temperature detection sleeve 9, ensuring that the temperature detection sleeve 9 will not loosen when it is impacted inside the pipeline, and the outer surface of the temperature detection sleeve 9 is evenly opened. There are multiple groups of buffer holes 8, and the distance between two adjacent groups of buffer holes 8 is the same. The buffer holes 8 are set to be tilted downward and the inclination angle of the buffer holes 8 is 60°. When the medium flows at high speed inside the pipeline and impacts the outer surface of the temperature inspection sleeve 9, the medium first impacts the outside of the buffer cylinder 7. The medium hits the outer surface of the buffer cylinder 7 to slow down. At the same time, the water flows into the inside of the buffer hole 8 and impacts downward to avoid the straight flow of the medium impacting the outer surface of the temperature inspection sleeve 9. The straight flow of the medium can be buffered between the impacts on the outer surface of the temperature inspection sleeve 9, thereby achieving buffering protection for the temperature inspection sleeve 9 and improving the service life of the temperature inspection sleeve 9. The buffer cylinder 7 is tubular and can buffer the flow medium from different directions inside the pipeline.

[0030] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An explosion-proof temperature sensor, comprising an explosion-proof temperature sensor housing (1), characterized in that: A junction box (11) is fixedly installed on the top of the explosion-proof temperature sensor housing (1), and a mounting rod (2) is fixedly connected to the bottom of the explosion-proof temperature sensor housing (1). A flange (3) is fixedly provided on one end of the mounting rod (2) away from the explosion-proof temperature sensor housing (1), and a temperature detection sleeve (9) is fixedly connected to the bottom of the flange (3). A buffer cylinder (7) is wrapped around the outside of the temperature detection sleeve (9), and a buffer hole (8) is opened on the surface of the buffer cylinder (7). A fixing cylinder (4) is welded and fixed to the top of the buffer cylinder (7), and the fixing cylinder (4) is fixedly provided on the bottom surface of the flange (3).

2. The explosion-proof temperature sensor according to claim 1, characterized in that: The junction box (11) on the top of the explosion-proof temperature sensor housing (1) is an explosion-proof junction box, and the bottom of the junction box (11) is fixedly connected to the temperature detection sleeve (9) via a mounting rod (2).

3. The explosion-proof temperature sensor according to claim 1, characterized in that: The surface of the flange (3) is evenly provided with a plurality of mounting holes, and the axial sections of the flange (3), the buffer cylinder (7) and the temperature detection sleeve (9) are concentric circle structures.

4. The explosion-proof temperature sensor according to claim 3, characterized in that: The surface of the buffer cylinder (7) is evenly provided with a plurality of groups of buffer holes (8), and the distance between two adjacent groups of buffer holes (8) is consistent. Meanwhile, the bottom of the buffer cylinder (7) is open.

5. The explosion-proof temperature sensor according to claim 4, characterized in that: The buffer holes (8) are arranged to be tilted downward, and the tilt angle of the buffer holes (8) is 60°. At the same time, multiple groups of buffer holes (8) are arranged through the side wall of the buffer cylinder (7).

6. The explosion-proof temperature sensor according to claim 1, characterized in that: Connecting seats (5) are fixedly installed on both sides of the top of the fixing cylinder (4), and the connecting seats (5) are arranged in an arc shape as a whole. At the same time, two groups of fixing bolts (6) are evenly installed on the connecting seats (5), and the fixing bolts (6) pass through the through holes opened on the connecting seats (5) and are screwed and fixed inside the screw holes opened at the bottom of the flange (3).

7. The explosion-proof temperature sensor according to claim 1, characterized in that: The length of the buffer tube (7) is greater than the length of the temperature detection sleeve (9), and the thickness of the buffer tube (7) is 0.4 cm.

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