Flange sleeve type thermal resistor

Abstract

The utility model relates to the technical field of thermal resistors, in particular to a flange casing pipe type thermal resistor which comprises a junction box, a wiring board, a connecting pipe, a flange casing pipe, a thermal resistor body and a protection mechanism, and the protection mechanism comprises an outer protection casing pipe, a limiting assembly, a plurality of installation rods, a plurality of liquid storage cylinders, a plurality of communicating rods and an annular cleaning brush. An outer protective sleeve is arranged outside the protective sleeve, the thermal resistor body is further protected, impurities in the environment are prevented from entering the protective sleeve, normal temperature measurement of the thermal resistor body is not affected, a limiting assembly is pushed, and the limiting assembly drives a mounting rod, a liquid storage cylinder, a communicating rod and an annular cleaning brush to vertically move downwards; impurities attached to the outer protective sleeve are scraped and cleaned, and the situation that the impurities in the environment are attached to the outer protective sleeve, heat conduction efficiency is reduced, and normal temperature measurement of the thermal resistor body is affected is prevented.

Description

Technical Field

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

[0002] Thermistors measure temperature based on the thermal effect of resistors. As long as the resistance change of the temperature-sensing thermistor is measured, the temperature of the medium can be measured. However, most of the common thermistors on the market have poor shockproof performance, which affects the measurement accuracy of the thermistors.

[0003] In the prior art, CN212807374U discloses a shockproof thermal resistor, which includes a junction box, a thermal resistor body, a protective sleeve, and a silicone gasket. The thermal resistor body is connected to the junction box, a protective sleeve is arranged outside the thermal resistor body, and the protective sleeve is used to protect the thermal resistor body. A silicone gasket is arranged outside the protective sleeve. The silicone gasket can prevent the outer shell of the thermal resistor body from being broken due to excessive vibration, thereby solving the influence of vibration on the thermal resistor body.

[0004] However, in the above structure, when monitoring some harsh environments, impurities in the external environment, such as dust, dirt, etc., may enter or adhere to the protective sleeve through ventilation and other means, thereby affecting the normal temperature measurement of the thermal resistor body. Utility Model Content

[0005] The purpose of the utility model is to provide a flange sleeve type thermal resistor, which solves the problem that when monitoring some relatively harsh environments, impurities in the external environment, such as dust, dirt, etc., may enter through ventilation and other channels and adhere to the protective sleeve, thereby affecting the normal temperature measurement of the thermal resistor body.

[0006] To achieve the above-mentioned purpose, the utility model provides a flange sleeve type thermal resistor, comprising a junction box, a protective sleeve, a thermal resistor body and a protective mechanism, wherein a terminal block is slidably connected inside the junction box, a hole is provided at the bottom of the junction box, the protective sleeve is fixedly connected to the junction box and is located below the junction box, and a mounting flange is provided on the outer side wall of the protective sleeve, the thermal resistor body is fixedly connected to the terminal block and is located below the terminal block, and the thermal resistor body extends from the hole at the bottom of the junction box into the protective sleeve, and the protective mechanism comprises an outer protective sleeve, a limit assembly, a plurality of A mounting rod, a plurality of liquid storage cylinders, a plurality of connecting rods and an annular cleaning brush, the outer protective sleeve is fixedly connected to the mounting flange and is located below the mounting flange, and the outer protective sleeve is sleeved on the outside of the protective sleeve, the limiting assembly is arranged inside the junction box, a plurality of the mounting rods are fixedly connected to the junction board and slide through the junction box and are located outside the protective sleeve, a plurality of the liquid storage cylinders are respectively rotatably connected between the mounting rod and the connecting rod, the connecting rod penetrates the mounting flange, the annular cleaning brush is fixedly connected to the connecting rod and is located below the mounting flange.

[0007] Wherein, the protection mechanism also includes a heat-conducting sleeve and a plurality of telescopic springs, wherein the heat-conducting sleeve is arranged between the protection sleeve and the outer protection sleeve, the plurality of telescopic springs are respectively sleeved on the outer side walls of the plurality of mounting rods, and the telescopic springs are arranged between the bottom of the junction box and the junction board.

[0008] Wherein, the limiting assembly includes two connecting rods and a handle, the two connecting rods are respectively fixedly connected to the terminal block and are located above the terminal block, and the two connecting rods pass through the terminal box, and the handle is fixedly connected to the two connecting rods and is located at one end of the connecting rod away from the terminal block.

[0009] Wherein, holes are respectively arranged at both ends of the connecting rod, and a hole is arranged at one end of the liquid storage cylinder close to the connecting rod, and the hole of the liquid storage cylinder matches the hole of the connecting rod.

[0010] Wherein, the flange sleeve type thermal resistor also includes a protection mechanism, and the protection mechanism is arranged inside the protection sleeve.

[0011] Wherein, the protection mechanism includes a mounting ring, a plurality of springs, two mounting plates and two buffer pads. The mounting ring is fixedly connected to the protection sleeve and is located on the outer side wall of the protection sleeve. The plurality of springs are fixedly connected between the mounting ring and the mounting plate. The two buffer pads are respectively fixedly connected to the two mounting plates and are located on one side of the mounting plate close to the thermal resistor body.

[0012] Among them, the protection mechanism also includes an insulating block, two mounting blocks and a compression spring. The insulating block is sleeved on the outer wall of the thermal resistor body, and the insulating block is located below the mounting ring. The two mounting blocks are respectively movably arranged inside the protective sleeve, and the compression spring is fixedly connected between the two mounting blocks.

[0013] The utility model discloses a flange sleeve type thermal resistor, which further protects the thermal resistor body by arranging the outer protective sleeve outside the protective sleeve, preventing impurities in the environment from entering the protective sleeve and affecting the normal temperature measurement of the thermal resistor body, and pushing the limit assembly, which drives the mounting rod, the liquid storage cylinder, the connecting rod and the annular cleaning brush to move vertically downward, and scrapes and cleans the impurities attached to the outer protective sleeve, preventing impurities in the environment from adhering to the outer protective sleeve to reduce the heat conduction efficiency, thereby affecting the normal temperature measurement of the thermal resistor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0016] Figure 2 It is a cross-sectional view of the overall structure of the first embodiment of the utility model.

[0017] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0018] Figure 4 It is a structural sectional view of a connecting rod, a liquid storage cylinder and an annular cleaning brush of the first embodiment of the utility model.

[0019] Figure 5 It is a schematic structural diagram of a mounting ring, a spring, a mounting plate, a buffer pad and a protective sleeve of a second embodiment of the utility model.

[0020] Figure 6 It is a structural schematic diagram of the mounting block, insulating block, compression spring and thermal resistor body of the second embodiment of the utility model.

[0021] Figure 7 It is a structural schematic diagram of the mounting block, insulating block, compression spring, thermal resistor body and protective sleeve of the second embodiment of the utility model.

[0022] 101-junction box, 102-junction board, 103-mounting flange, 104-protective sleeve, 105-thermal resistor body, 106-outer protective sleeve, 107-mounting rod, 108-liquid storage cylinder, 109-connecting rod, 110-annular cleaning brush, 111-thermal sleeve, 112-telescopic spring, 113-connecting rod, 114-handle, 201-mounting ring, 202-spring, 203-mounting plate, 204-buffer pad, 205-insulating block, 206-mounting block, 207-compression spring. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0024] First embodiment

[0025] See also Figure 1 to Figure 4 ,in Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is a cross-sectional view of the overall structure of the first embodiment of the utility model. Figure 3 yes Figure 2 The enlarged view of point A in the middle. Figure 4 It is a structural sectional view of a connecting rod, a liquid storage cylinder and an annular cleaning brush of the first embodiment of the utility model.

[0026] The utility model provides a flange sleeve type thermal resistor, comprising a junction box 101, a junction board 102, a mounting flange 103, a protective sleeve 104, a thermal resistor body 105 and a protective mechanism, wherein the protective mechanism comprises an outer protective sleeve 106, a limit assembly, a plurality of mounting rods 107, a plurality of liquid storage cylinders 108, a plurality of connecting rods 109, an annular cleaning brush 110, a thermal sleeve 111 and a telescopic spring 112, and the limit assembly comprises two connecting rods 113 and a handle 114. The above-mentioned solution solves the problem that when monitoring some relatively harsh environments, impurities in the external environment may enter or adhere to the protective sleeve through ventilation and the like, thereby affecting the normal temperature measurement of the thermal resistor body.

[0027] According to a specific implementation, a terminal block 102 is provided inside the junction box 101, a hole is provided at the bottom of the junction box 101, the protective sleeve 104 is fixedly connected to the junction box 101 and is located below the junction box 101, and a mounting flange 103 is provided on the outer wall of the protective sleeve 104, the thermal resistor body 105 is fixedly connected to the terminal block 102 and is located below the terminal block 102, and the thermal resistor body 105 extends from the hole at the bottom of the junction box 101 into the protective sleeve 104, the mounting flange 103 is used to connect the flange sleeve type thermal resistor and the measured medium, the protective sleeve 104 protects the thermal resistor body 105, the measured medium is temperature measured through the thermal resistor body 105, and the temperature of the measured medium is displayed by an external electrical instrument connected to the junction block 102.

[0028] The outer protective sleeve 106 is fixedly connected to the mounting flange 103 and is located below the mounting flange 103, and the outer protective sleeve 106 is sleeved on the outside of the protective sleeve 104. The limit assembly is arranged inside the junction box 101. The plurality of mounting rods 107 are fixedly connected to the wiring board 102 and slide through the junction box 101 and are located outside the protective sleeve 104. The plurality of liquid storage cylinders 108 are respectively rotatably connected between the mounting rod 107 and the connecting rod 109, and the connecting rod 109 penetrates the mounting flange 103. The annular cleaning brush 110 is connected to the The connecting rod 109 is fixedly connected and located below the mounting flange 103. By arranging the outer protective sleeve 106 outside the protective sleeve 104, the influence of impurities in the environment on the thermal resistor body 105 is further prevented. The limit assembly is pushed, and the limit assembly drives the mounting rod 107, the liquid storage cylinder 108, the connecting rod 109 and the annular cleaning brush 110 to move vertically downward to scrape and clean the impurities attached to the outer protective sleeve 106, so as to prevent impurities in the environment from adhering to the outer protective sleeve 106 to reduce the heat conduction efficiency, thereby affecting the normal temperature measurement of the thermal resistor body 105.

[0029] Among them, the heat-conducting sleeve 111 is arranged between the protective sleeve 104 and the outer protective sleeve 106, and the multiple telescopic springs 112 are respectively sleeved on the outer side walls of the multiple mounting rods 107, and the telescopic springs 112 are arranged between the bottom of the junction box 101 and the junction board 102. By setting the heat-conducting sleeve 111 between the protective sleeve 104 and the outer protective sleeve 106, the problem of affecting the heat conduction effect due to the excessive distance between the protective sleeve 104 and the outer protective sleeve 106 is reduced. Through the elastic characteristics of the telescopic spring 112, the telescopic spring 112 rebounds, driving the mounting rod 107, the liquid storage cylinder 108, the connecting rod 109 and the annular cleaning brush 110 to move vertically upward, so that the annular cleaning brush 110 returns to the initial position, which is convenient for scraping and cleaning the outer protective sleeve 106 next time.

[0030] Among them, the two connecting rods 113 are respectively fixedly connected to the terminal board 102 and are located above the terminal board 102, and the two connecting rods 113 pass through the terminal box 101, and the handle 114 is respectively fixedly connected to the two connecting rods 113 and is located at one end of the connecting rod 113 away from the terminal board 102. By pushing the handle 114 to move vertically downward, the handle 114 drives the connecting rod 113, the mounting rod 107, the liquid storage cylinder 108, the connecting rod 109 and the annular cleaning brush 110 to move vertically downward to scrape and clean the outer protective sleeve 106.

[0031] Among them, holes are respectively provided at both ends of the connecting rod 109, and a hole is provided at one end of the liquid storage cylinder 108 close to the connecting rod 109, and the hole of the liquid storage cylinder 108 matches the hole of the connecting rod 109. Before scraping, the liquid storage cylinder 108 is rotated so that the holes on the liquid storage cylinder 108 and the holes on the connecting rod 109 are on the same axis, and the cleaning agent in the liquid storage cylinder 108 is transported to the annular cleaning brush 110 through the connecting rod 109.

[0032] When using the flange sleeve type thermal resistor of the utility model, the mounting flange 103 is connected to the measured medium, and the thermal resistor body 105 measures the temperature of the medium. By arranging the outer protective sleeve 106 outside the protective sleeve 104, it is further prevented that impurities in the environment enter the sleeve and affect the thermal resistor body 105. When cleaning is required, the liquid storage cylinder 108 is rotated so that the holes on the liquid storage cylinder 108 and the holes on the connecting rod 109 are on the same axis. The cleaning agent in the liquid storage cylinder 108 is delivered to the annular cleaning brush 110 through the connecting rod 109, pushing the handle 114 to move vertically downward, and the handle 114 drives the connecting rod 113, the mounting rod 107, the liquid storage cylinder 108, the connecting rod 109 and the annular cleaning brush 110 It moves vertically downward to scrape and clean the impurities attached to the outer protective sleeve 106, so as to prevent impurities in the environment from adhering to the outer protective sleeve 106 and reducing the heat conduction efficiency, thereby affecting the normal temperature measurement of the thermal resistor body 105. The heat-conducting sleeve 111 is arranged between the protective sleeve 104 and the outer protective sleeve 106 to reduce the problem of affecting the heat conduction effect due to the large distance between the protective sleeve 104 and the outer protective sleeve 106. Through the elastic characteristics of the telescopic spring 112, the telescopic spring 112 rebounds, driving the mounting rod 107, the liquid storage cylinder 108, the connecting rod 109 and the annular cleaning brush 110 to move vertically upward, so that the annular cleaning brush 110 returns to the initial position, so as to facilitate the scraping and cleaning of the outer protective sleeve 106 next time.

[0033] Second embodiment

[0034] See also Figure 5 to Figure 7 ,in Figure 5 This is a schematic diagram of the structure of the mounting ring, spring, mounting plate, buffer pad and protective sleeve of the second embodiment of the utility model. Figure 6 This is a schematic diagram of the structure of the mounting block, insulating block, compression spring and thermal resistor body of the second embodiment of the utility model. Figure 7 It is a structural schematic diagram of the mounting block, insulating block, compression spring, thermal resistor body and protective sleeve of the second embodiment of the utility model.

[0035] On the basis of the first embodiment, the flange sleeve type thermal resistor of the utility model further includes a protection mechanism, which includes a mounting ring 201, a plurality of springs 202, two mounting plates 203, two buffer pads 204, two mounting blocks 206, an insulating block 205 and a compression spring 207.

[0036] According to a specific implementation, the protection mechanism is disposed inside the protection sleeve 104 , and is used to protect the thermal resistor body 105 , to prevent vibration from causing the connection of the thermal resistor body 105 to become loose or disconnected, thereby affecting the measurement accuracy.

[0037] Among them, the mounting ring 201 is fixedly connected to the protective sleeve 104 and is located on the inner wall of the protective sleeve 104, the multiple springs 202 are fixedly connected between the mounting ring 201 and the mounting plate 203, the two buffer pads 204 are respectively fixedly connected to the two mounting plates 203, and are located on the side of the mounting plate 203 close to the thermal resistor body 105. When the thermal resistor body 105 shakes horizontally, the buffer pads 204 are used to buffer the vibration of the thermal resistor body 105. The mounting plate 203, the multiple springs 202 and the mounting ring 201 cooperate with each other to further reduce vibration, thereby preventing the thermal resistor body 105 and the protective sleeve 104 from colliding with each other, causing measurement errors, and reducing the service life of the thermal resistor body 105.

[0038] The insulating block 205 is sleeved on the outer wall of the thermal resistor body 105, and the insulating block 205 is located below the mounting ring 201. The two mounting blocks 206 are movably arranged inside the protective sleeve 104, and the compression spring 207 is fixedly connected between the two mounting blocks 206. The insulating block 205 is used to protect the thermal resistor body 105. When the thermal resistor body 105 vibrates in the vertical direction, the insulating block 205 and the compression spring 207 cooperate with each other to prevent the thermal resistor body 105 and the protective sleeve 104 from vibrating against each other. Collision will affect the measurement accuracy of the thermal resistor body 105, and may even cause damage to the thermal resistor body 105 in severe cases. When the vibration causes the connection between the thermal resistor body 105 and the terminal block 102 to be disconnected, the thermal resistor body 105 and the insulating block 205 move vertically downward, and the insulating block 205 contacts the mounting block 206, so that the compression spring 207 is compressed. Under the action of the elastic force of the compression spring 207, the thermal resistor body 105 will not collide with the protective sleeve 104, thereby avoiding damage to the thermal resistor body 105.

[0039] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A flange sleeve type thermal resistor, comprising a junction box, a protective sleeve and a thermal resistor body, wherein a terminal block is slidably connected inside the junction box, a hole is provided at the bottom of the junction box, the protective sleeve is fixedly connected to the junction box and is located below the junction box, and a mounting flange is provided on the outer wall of the protective sleeve, the thermal resistor body is fixedly connected to the terminal block and is located below the terminal block, and the thermal resistor body extends from the hole at the bottom of the junction box into the protective sleeve, characterized in that: It also includes a protective mechanism, which includes an outer protective sleeve, a limit assembly, a plurality of mounting rods, a plurality of liquid storage cylinders, a plurality of connecting rods and an annular cleaning brush. The outer protective sleeve is fixedly connected to the mounting flange and is located below the mounting flange, and the outer protective sleeve is sleeved on the outside of the protective sleeve. The limit assembly is arranged inside the junction box. The plurality of mounting rods are fixedly connected to the junction board and slide through the junction box and are located outside the protective sleeve. The plurality of liquid storage cylinders are respectively rotatably connected between the mounting rod and the connecting rod. The connecting rod penetrates the mounting flange. The annular cleaning brush is fixedly connected to the connecting rod and is located below the mounting flange.

2. A flange sleeve type thermal resistor as claimed in claim 1, characterized in that: The protection mechanism also includes a heat-conducting sleeve and a plurality of telescopic springs, wherein the heat-conducting sleeve is arranged between the protection sleeve and the outer protection sleeve, the plurality of telescopic springs are respectively sleeved on the outer side walls of the plurality of mounting rods, and the telescopic springs are arranged between the bottom of the junction box and the junction board.

3. A flange sleeve type thermal resistor as claimed in claim 1, characterized in that: The limiting assembly includes two connecting rods and a handle, the two connecting rods are respectively fixedly connected to the wiring board and are located above the wiring board, and the two connecting rods pass through the wiring box, and the handle is respectively fixedly connected to the two connecting rods and is located at one end of the connecting rod away from the wiring board.

4. A flange sleeve type thermal resistor as claimed in claim 1, characterized in that: Holes are respectively arranged at both ends of the connecting rod, and a hole is arranged at one end of the liquid storage cylinder close to the connecting rod, and the hole of the liquid storage cylinder matches the hole of the connecting rod.

5. A flange sleeve type thermal resistor as claimed in claim 1, characterized in that: The flange sleeve type thermal resistor also includes a protection mechanism, which is arranged inside the protection sleeve.

6. A flange sleeve type thermal resistor as claimed in claim 5, characterized in that: The protection mechanism includes a mounting ring, a plurality of springs, two mounting plates and two buffer pads. The mounting ring is fixedly connected to the protection sleeve and is located on the outer side wall of the protection sleeve. The plurality of springs are fixedly connected between the mounting ring and the mounting plate. The two buffer pads are respectively fixedly connected to the two mounting plates and are located on one side of the mounting plate close to the thermal resistor body.

7. A flange sleeve type thermal resistor as claimed in claim 6, characterized in that: The protection mechanism also includes an insulating block, two mounting blocks and a compression spring. The insulating block is sleeved on the outer wall of the thermal resistor body, and the insulating block is located below the mounting ring. The two mounting blocks are movably arranged inside the protection sleeve, and the compression spring is fixedly connected between the two mounting blocks.

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