Movable flange type assembled thermal resistor

Abstract

The utility model provides a movable flange type assembled thermal resistor, and belongs to the technical field of thermal resistors. Comprising a thermal resistor body, and the thermal resistor body comprises a connecting part and a protection tube. The bottom end of the protection tube is movably sleeved with a telescopic shell, a measuring end is arranged at the center of the bottom end of the telescopic shell, the top end of the measuring end extends to an inner cavity of the telescopic shell and is connected with a limiting strip, telescopic parts are arranged in an inner cavity of the telescopic shell and an inner cavity of the protection tube, and the inner cavity of the protection tube is connected with a clamping plate. By arranging the telescopic rod, the clamping strip can be driven to rotate, so that the clamping strip is gradually separated from the bayonet along with the rotation angle, then the telescopic shell is stretched to slide, the length of the thermal resistor is adjusted according to actual operation requirements so as to adapt to different measured objects, the application range and flexibility of the thermal resistor are improved, and the carrying number is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal resistors, in particular to a movable flange type assembled thermal resistor. Background Art

[0002] Thermistors are the most commonly used temperature detectors in medium and low temperature zones. Thermistor temperature measurement is based on the property that the resistance of a metal conductor increases with increasing temperature. Its main features are high measurement accuracy and stable performance. Among them, platinum thermistors have the highest measurement accuracy. They are not only widely used in industrial temperature measurement, but also made into standard reference instruments. Thermistors are mostly made of pure metal materials, with platinum and copper being the most commonly used. In addition, nickel, manganese, and rhodium have begun to be used to manufacture thermistors. There are many types of temperature sensing materials commonly used for metal thermistors, the most commonly used of which is platinum wire. In addition to platinum wire, metal thermistor materials used for industrial measurement include copper, nickel, iron, iron-nickel, etc.

[0003] At present, during the use of existing thermal resistors, since the objects to be measured are often not in fixed shapes and sizes, it is necessary to select a thermal resistor of appropriate length according to the shape and size of the object to be measured during each detection process, and it is also necessary to carry thermocouples of various lengths as backup, which affects its scope of application and is inconvenient for people to carry and use. Therefore, the present application provides a movable flange assembled thermal resistor to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a movable flange type assembled thermal resistor to solve the existing problem of needing to carry multiple thermal resistors with different adjustment lengths.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A movable flange-assembled thermal resistor comprises: a thermal resistor body, the thermal resistor body comprises a connecting portion and a protective tube; a telescopic shell is movably sleeved on the bottom end of the protective tube, a measuring end is arranged at the center of the bottom end of the telescopic shell, the top end of the measuring end extends to the inner cavity of the telescopic shell and is connected to a limit strip, the inner cavities of the telescopic shell and the protective tube are both provided with telescopic parts, the inner cavities of the protective tube are connected with a clamping plate, a side of the clamping plate away from the inner cavity of the protective tube is provided with a plurality of clamping ports, the telescopic part comprises a protective shell, the bottom end of the protective shell is connected to the bottom end of the telescopic shell, the inner cavity of the protective shell is provided with a telescopic rod, a storage port is arranged on the right side of the protective shell, the right side of the top end of the telescopic rod is movably connected with a clamping strip, and the right side of the clamping strip extends to the inner cavity of the clamping port.

[0007] Two fixing plates are arranged at the bottom end of the inner cavity of the protective shell, and the fixing plates are distributed up and down. The bottom end of the telescopic rod passes through the fixing plates, and a tension spring is arranged on one side corresponding to the fixing plates. The bottom end of the telescopic rod passes through the telescopic shell.

[0008] The surface of the measuring end is covered with an insulating layer.

[0009] A flange body is movably sleeved on the surface of the protection tube, a plurality of placement grooves are arranged on the surface of the flange body, and a fixing part is arranged in the inner cavity of the placement groove.

[0010] The fixing part includes a moving rod, the inner side of the moving rod extends to the inner cavity of the placement groove and is connected to a clamping plate, the outer side and the inner side of the moving rod respectively movably penetrate the first connecting plate and the second connecting plate, the surface of the first connecting plate and the surface of the second connecting plate are both connected to the inner cavity of the placement groove, a first return spring is provided on the outer side of the first connecting plate, and a second return spring is provided on the inner side of the second connecting plate, the inner cavity of the placement groove near the center of the flange body is triangular, and the inner side of the clamping plate is in contact with the protective tube.

[0011] The side of the first return spring away from the first connecting plate is connected to the inner cavity of the placement groove, and the inner side of the second return spring is connected to the clamping plate.

[0012] The clamping plate is in a semi-arc shape, and the inner side of the clamping plate matches the outer wall of the protection tube.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, by setting a telescopic rod, the card strip can be driven to rotate, so that the card strip gradually disengages from the bayonet according to the rotation angle, and then the telescopic shell is stretched to slide. According to actual operation requirements, the length of the thermal resistor is adjusted to suit different objects to be measured, thereby improving the use range and flexibility of the thermal resistor and reducing the number of items to be carried. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a movable flange-mounted thermal resistor;

[0017] Figure 2 It is a sectional view of the local three-dimensional structure of the flange body;

[0018] Figure 3 It is a cross-sectional view of the three-dimensional structure of the telescopic shell;

[0019] Figure 4 It is a schematic diagram of the partially enlarged structure of the pallet;

[0020] Figure 5 It is a partial enlarged structural cross-sectional view of the telescopic rod;

[0021] Figure 6 This is a partially enlarged structural cross-sectional view of the protective shell.

[0022] [Reference Signs]

[0023] 1. Thermal resistor body; 2. Flange body; 3. Telescopic shell; 4. Placement slot; 5. Fixed part; 6. Limit strip; 7. Measuring end; 8. Telescopic part; 9. Clamping plate; 10. Clamping port; 11. Connecting part; 12. Protective tube; 51. Moving rod; 52. First reset spring; 53. First connecting plate; 54. Second connecting plate; 55. Clamping plate; 56. Second reset spring; 81. Protective shell; 82. Telescopic rod; 83. Storage port; 84. Clamping strip; 85. Fixed plate; 86. Tension spring.

[0024] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0025] The following is a detailed description of a movable flange-mounted thermal resistor provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0026] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, an embodiment of the utility model provides a movable flange-assembled thermal resistor, comprising: a thermal resistor body 1, the thermal resistor body 1 comprising a connecting portion 11 and a protective tube 12; a telescopic shell 3 is movably sleeved on the bottom end of the protective tube 12, a measuring end 7 is provided at the center of the bottom end of the telescopic shell 3, the top end of the measuring end 7 extends to the inner cavity of the telescopic shell 3 and is connected to a limiting strip 6, the inner cavity of the telescopic shell 3 and the inner cavity of the protective tube 12 are both provided with a telescopic portion 8, the inner cavity of the protective tube 12 is connected with a clamping plate 9, a side of the clamping plate 9 away from the inner cavity of the protective tube 12 is provided with a plurality of clamping ports 10, the telescopic portion 8 comprises a protective shell 81, the bottom end of the protective shell 81 is connected to the bottom end of the telescopic shell 3, the inner cavity of the protective shell 81 is provided with a telescopic rod 82, the right side of the protective shell 81 is provided with a receiving port, the right side of the top end of the telescopic rod 82 is movably connected with a clamping strip 84, and the right side of the clamping strip 84 extends to the inner cavity of the clamping port 10.

[0027] By setting the telescopic part 8 and pressing the telescopic rod 82, the clamping strip 84 is driven to rotate upward, so that the clamping strip 84 is completely located in the protective shell 81. At the same time, when the clamping strip 84 rotates, it gradually disengages from the bayonet 10 following the rotation angle of the clamping strip 84. At this time, the telescopic shell 3 is pulled to adjust to a suitable distance. The purpose is to adjust the length of the bottom end of the thermal resistor to adapt to different measured objects and improve the use range and flexibility of the thermal resistor; by setting the limit strip 6, when adjusting the length of the telescopic shell 3, the measuring end 7 moves with the telescopic shell 3, and the telescopic shell 3 is limited to avoid damage to the measuring end 7 caused by the telescopic shell 3 when moving, affecting its use; by setting the tension spring 86, which is made of metal material and has good wear resistance, the service life of the tension spring 86 is extended, and at the same time, when the telescopic rod 82 is extended and retracted, the telescopic rod 82 is reset while providing its pulling force.

[0028] like Figure 3 , Figure 5 and Figure 6 As shown, two fixing plates 85 are provided at the bottom end of the inner cavity of the protective shell 81, and the fixing plates 85 are distributed up and down. The bottom end of the telescopic rod 82 passes through the fixing plate 85, and a tension spring 86 is provided on the corresponding side of the fixing plate 85, and the bottom end of the telescopic rod 82 passes through the telescopic shell 3.

[0029] The purpose of setting the fixing plate 85 is to provide a fixed support for the tension spring 86, so that the tension spring 86 can exert its tension without being affected by it. At the same time, the fixing plate 85 and the protective shell 81 are fixedly connected in an integrated manner or by welding, and are made of metal material, which has good stability and is wear-resistant.

[0030] like Figure 3 As shown, the surface of the measuring end 7 is covered with an insulating layer.

[0031] The surface of the measuring end 7 is covered with an insulating layer, the purpose of which is to prevent the thermistor from contacting the outside world, thereby avoiding inaccurate temperature measurement caused by errors and external electromagnetic interference. If the measuring end 7 of the thermistor directly contacts the surface of the object to be measured, it will be in close contact with the external environment, which will cause inaccurate temperature measurement due to interference from external factors.

[0032] like Figure 1 and Figure 2 As shown, a flange body 2 is movably sleeved on the surface of the protection tube 12 , a plurality of placement grooves 4 are provided on the surface of the flange body 2 , and a fixing portion 5 is provided in the inner cavity of the placement groove 4 .

[0033] The placement groove 4 is provided to accommodate the fixing part 5, so as to prevent the fixing part 5 from protruding from the flange body 2, which would affect the connection stability of the flange body 2, and to prevent the fixing part 5 from being directly exposed to the outside and being corroded by long-term use.

[0034] like Figure 1 and Figure 2 As shown, the fixing portion 5 includes a moving rod 51, the inner side of the moving rod 51 extends to the inner cavity of the placement groove 4 and is connected to a clamping plate 55, the outer side and the inner side of the moving rod 51 respectively movably penetrate the first connecting plate 53 and the second connecting plate 54, the surface of the first connecting plate 53 and the surface of the second connecting plate 54 are both connected to the inner cavity of the placement groove 4, a first return spring 52 is provided on the outer side of the first connecting plate 53, and a second return spring 56 is provided on the inner side of the second connecting plate 54, the inner cavity of the placement groove 4 near the center of the flange body 2 is triangular, and the inner side of the clamping plate 55 is in contact with the protective tube 12.

[0035] When the thermal resistor is installed on pipes of different depths and sizes, the depth of the protective tube 12 inserted into the pipe is different, and the flange on the outer wall of the protective tube 12 needs to match the pipe. At this time, it is necessary to adjust the position of the flange or replace the flange with a flange of appropriate size. However, most flanges are connected in a fixed manner and the position of the flange cannot be adjusted. By setting the fixing part 5, the flange can be quickly installed and adjusted, which is convenient for the subsequent use of the thermal resistor.

[0036] like Figure 2 As shown, the side of the first return spring 52 away from the first connecting plate 53 is connected to the inner cavity of the placement groove 4 , and the inner side of the second return spring 56 is connected to the clamping plate 55 .

[0037] The first return spring 52 and the second return spring 56 are provided to return the moving rod 51. The two springs are provided to increase the pulling force of the moving rod 51 when it is returned, so as to prevent the fixing part 5 from being unusable when one of the springs is damaged.

[0038] like Figure 1 and Figure 2As shown, the clamping plate 55 is in a semi-arc shape, and the inner side of the clamping plate 55 matches the outer wall of the protection tube 12 .

[0039] By providing the clamping plate 55, the fixing part 5 can be clamped on the surface of the protective tube 12, thereby achieving fixation of the flange and avoiding unstable fixation of the fixing part 5 due to external collision or shaking during use. At the same time, the number of the clamping plates 55 is at least four, and the flange can be fixed from multiple angles, so that the clamping force is evenly applied, thereby enhancing its stability.

[0040] The technical solution provided by the utility model is that when it is necessary to adjust the length of the thermal resistor, the telescopic rod 82 is pressed upward. During this process, the tension spring 86 is deformed, driving the clamping strip 84 to rotate upward, so that the clamping strip 84 is completely located in the protective shell 81. At the same time, when the clamping strip 84 rotates, it gradually separates from the bayonet 10 following the rotation angle of the clamping strip 84. At this time, the telescopic shell 3 is pulled to adjust to a suitable distance, and the telescopic rod 82 is released. With the cooperation of the tension spring 86, the clamping strip 84 is driven to rotate so that the clamping strip 84 is located in the bayonet 10 to fix the telescopic shell 3; when it is necessary to adjust the position of the flange body 2, the moving rod 51 is pulled forward. During this process, the first return spring 52 and the second return spring 56 are deformed, driving the clamping plate 55 to move outward, so that the clamping plate 55 is no longer in contact with the protective tube 12, and the flange body 2 is adjusted to a suitable position.

[0041] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A movable flange-mounted thermal resistor, characterized in that: include: A thermal resistor body (1), the thermal resistor body (1) comprising a connecting portion (11) and a protective tube (12); The bottom end of the protective tube (12) is movably sleeved with a telescopic shell (3), a measuring end (7) is provided at the center of the bottom end of the telescopic shell (3), the top end of the measuring end (7) extends to the inner cavity of the telescopic shell (3) and is connected to a limit strip (6), the inner cavities of the telescopic shell (3) and the inner cavities of the protective tube (12) are both provided with a telescopic portion (8), the inner cavities of the protective tube (12) are connected to a clamping plate (9), a side of the clamping plate (9) away from the inner cavity of the protective tube (12) is provided with a plurality of clamping ports (10), the telescopic portion (8) comprises a protective shell (81), the bottom end of the protective shell (81) is connected to the bottom end of the telescopic shell (3), the inner cavity of the protective shell (81) is provided with a telescopic rod (82), the right side of the protective shell (81) is provided with a receiving port (83), the right side of the top end of the telescopic rod (82) is movably connected to a clamping strip (84), the right side of the clamping strip (84) extends to the inner cavity of the clamping port (10).

2. The movable flange-mounted thermal resistor according to claim 1, characterized in that: Two fixing plates (85) are provided at the bottom end of the inner cavity of the protective shell (81), and the fixing plates (85) are distributed up and down. The bottom end of the telescopic rod (82) passes through the fixing plates (85). A tension spring (86) is provided on a side corresponding to the fixing plates (85), and the bottom end of the telescopic rod (82) passes through the telescopic shell (3).

3. The movable flange assembled thermal resistor according to claim 1, characterized in that: The surface of the measuring end (7) is covered with an insulating layer.

4. The movable flange assembled thermal resistor according to claim 1, characterized in that: A flange body (2) is movably sleeved on the surface of the protection tube (12), a plurality of placement grooves (4) are provided on the surface of the flange body (2), and a fixing portion (5) is provided in the inner cavity of the placement groove (4).

5. The movable flange-mounted thermal resistor according to claim 4, characterized in that: The fixing portion (5) comprises a moving rod (51), the inner side of the moving rod (51) extending to the inner cavity of the placement groove (4) and connected to a clamping plate (55), the outer side and the inner side of the moving rod (51) respectively movably penetrate the first connecting plate (53) and the second connecting plate (54), the surface of the first connecting plate (53) and the surface of the second connecting plate (54) are both connected to the inner cavity of the placement groove (4), the outer side of the first connecting plate (53) is provided with a first return spring (52), and the inner side of the second connecting plate (54) is provided with a second return spring (56), the inner cavity of the placement groove (4) near the center of the flange body (2) is triangular, and the inner side of the clamping plate (55) is in contact with the protective tube (12).

6. The movable flange-mounted thermal resistor according to claim 5, characterized in that: The side of the first return spring (52) away from the first connecting plate (53) is connected to the inner cavity of the placement groove (4), and the inner side of the second return spring (56) is connected to the clamping plate (55).

7. The movable flange-mounted thermal resistor according to claim 5, characterized in that: The clamping plate (55) is in a semi-arc shape, and the inner side of the clamping plate (55) matches the outer wall of the protection tube (12).

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