Leakage drainage structure of sensor
By designing a liquid leakage drainage structure including outer sleeve, inner sleeve and sensor body, the problem of liquid leakage after corrosion and damage of outer sleeve of temperature sensor is solved, which facilitates inspection and avoids the risk of bumps and improves service life.
Patent Information
- Application Number
- CN202421410615.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-20
AI Technical Summary
After the existing temperature sensor is installed, when the external protective sleeve is corroded and damaged, liquid leakage is prone to occur, and liquid flows into the junction box, resulting in component failure. In addition, it is necessary to remove the external protective sleeve when checking the leakage, which increases the impact and damage. risk.
A sensor leakage drainage structure is designed, including an outer sleeve, an inner sleeve and a sensor body. The outer sleeve is equipped with a flange, an ring sleeve assembly and a flow guide hole. Through the up and down movement of the sleeve two, the operator can Observe the situation in the fluid accumulation chamber externally, judge the leakage in the casing main body, and avoid the risk of bumps caused by dismantling the outer casing.
Through this leakage drainage structure, the operator can easily check the leakage inside the sensor, avoiding the risk of bumps caused by disassembly of the outer sleeve, and improving the service life of the device.
Smart Images
Figure CN222528807U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensors, in particular to a leakage drainage structure of a sensor. Background Art
[0002] Temperature sensors currently used in industry usually need to be inserted into the device housing to measure the internal temperature during installation. When the outer protective sleeve inserted into the device housing is damaged after corrosion, leakage is likely to occur. The liquid flows into the junction box along the wire, which can easily cause component failure. Therefore, it is necessary to regularly check the leakage in the outer protective sleeve. The outer protective sleeve needs to be removed for inspection. Since the outer protective sleeve itself is in a corrosive environment, the material strength is damaged. The inspection process itself increases the occurrence of outer protective sleeve bumps and damages, which is insufficient. Utility Model Content
[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a leakage drainage structure for a sensor, which is convenient for checking the leakage inside the sensor and thus prolonging the service life.
[0004] The utility model discloses a leakage drainage structure of a sensor, comprising an outer sleeve, an inner sleeve and a sensor body, wherein the inner sleeve is inserted into the outer sleeve, the sensor body is installed in the inner sleeve, the outer sleeve comprises a sleeve body, the outer sleeve comprises a sleeve body, the outer sleeve also comprises a flange, the flange is located outside the lower part of the sleeve body, the upper end surface of the flange is an assembly surface, a ring sleeve component is installed on the outer wall of the sleeve body, the ring sleeve component is located below the flange, the ring sleeve component comprises a ring sleeve three, a liquid accumulation cavity one is formed between the inner wall of the ring sleeve three and the outer wall of the sleeve body, a liquid blocking sleeve is installed on the inner wall of the sleeve body, a liquid accumulation cavity two is formed between the liquid blocking sleeve and the inner wall of the sleeve body, the sleeve body is provided with a guide hole, and the axial ends of the guide hole are respectively connected with the liquid accumulation cavity two and the liquid accumulation cavity one.
[0005] Furthermore, a ring sleeve 1 is fixedly connected to the outer wall of the sleeve body, and the ring sleeve 1 includes a ring portion 1 located at the top and a sleeve body 1 located below the ring portion 1. The ring sleeve 3 includes a sleeve body 2 located at the top and a ring portion 2 located below the sleeve body 2. The sleeve body 2 is inserted into the inner wall of the sleeve body 1, and the sleeve body 2 can move up and down along the inner wall of the sleeve body 1. An extension tube is provided at the bottom of the sleeve body. The outer diameter of the extension tube is smaller than that of the sleeve body. The extension tube passes through the ring portion 2, and the outer diameter of the extension tube matches the inner diameter of the ring portion 2. When the upper end face of the sleeve body 2 abuts against the bottom face of the ring portion 1, the upper end face of the ring portion 2 abuts against the bottom face of the sleeve body, and the sleeve body 2 can move to a position where its upper end face is lower than a lower end face of the sleeve body.
[0006] Furthermore, an inner peripheral wall of the ring portion is attached to and fixed to an outer peripheral wall of the sleeve body, and a position of the ring portion is higher than the guide hole.
[0007] Furthermore, a ring sleeve four is slidably connected to the outer wall of the sleeve body, and an insertion rod is fixedly connected to the bottom of the ring sleeve four, and the insertion rod is inserted into the ring part one. When the upper end surface of the sleeve body two abuts against the bottom surface of the ring part one, the upper end surface of the sleeve body two abuts against the bottom surface of the insertion rod, and the ring sleeve four and the ring part one are in a separated state. When the sleeve body two moves downward, the ring sleeve four moves downward together with the insertion rod until the ring sleeve four is hung on the upper end of the ring part one.
[0008] Furthermore, a second ring sleeve is threadedly connected to the outer wall of the extension tube, and the top of the second ring sleeve abuts against the bottom of the second ring portion.
[0009] Furthermore, a ring body is provided at the top of the liquid-blocking sleeve, the inner sleeve passes through the ring body, and a sealing ring three is installed between the outer wall of the inner sleeve and the inner wall of the ring body.
[0010] Furthermore, the outer diameter of the ring body is smaller than the inner diameter of the sleeve body, and the second liquid accumulation cavity is located radially outside the ring body.
[0011] Furthermore, a boss is provided on the inner wall of the sleeve body, the upper end surface of the liquid blocking sleeve is in contact with the bottom surface of the boss, and the second liquid accumulation cavity is located above the liquid blocking sleeve.
[0012] Furthermore, a sealing ring is installed between the upper end surface of the liquid-blocking sleeve and the bottom surface of the boss.
[0013] Furthermore, a sealing ring 1 is installed on the upper end surface of the sleeve body 2. When the upper end surface of the sleeve body 2 abuts against the bottom surface of the insertion rod, the sealing ring 1 seals the inner hole of the insertion rod inserted into the ring part 1.
[0014] Beneficial effects of the utility model:
[0015] By moving the sleeve body 2 downward until its upper end surface is lower than the lower end surface of the sleeve body, the operator can observe the situation in the liquid accumulation chamber 1 from the outside to determine the leakage situation in the sleeve body, thereby avoiding the risk of bumping caused by removing the outer sleeve and increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a cross-sectional view of an embodiment;
[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0018] Figure numerals: outer sleeve 1, sleeve body 11, extension tube 111, boss 112, guide hole 113, filling part 114, flange 12, inner sleeve 2, sensor body 3, junction box 31, liquid blocking sleeve 4, ring body 41, ring sleeve assembly 5, ring sleeve one 51, ring part one 511, sleeve body one 512, ring sleeve two 52, ring sleeve three 53, sleeve body two 531, liquid accumulation cavity one 5311, ring part two 532, ring sleeve four 54, insertion rod 55, sealing ring one 6, sealing ring two 7, liquid accumulation cavity two 8, sealing ring three 9. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0020] like Figure 1 As shown, a leakage drainage structure of a sensor includes an outer sleeve 1 and an inner sleeve 2. The outer sleeve 1 has an opening at the bottom, and the inner sleeve 2 is inserted into the outer sleeve 1. The outer sleeve 1 includes a sleeve body 11. A filling portion 114 is formed between the inner wall of the sleeve body 11 and the outer wall of the inner sleeve 2. The filling portion 114 is filled with a thermal conductive component. The thermal conductive component is magnesium oxide powder. The magnesium oxide powder is powder and compacted into a block. The sensor body 3 is installed in the inner sleeve 2. The inner sleeve 2 is also filled with magnesium oxide powder. The magnesium oxide powder in the inner sleeve 2 and the filling portion 114 is filled with magnesium oxide powder. Figure 1 Above the center L line, the sensor body 3 is electrically connected to the circuit in the junction box 31. The junction box 31 is located at the bottom of the outer sleeve 1 and is fixedly connected to the bottom of the outer sleeve 1. When the upper outer wall of the sleeve body 11 contacts the measured object, heat is transferred to the sensor body 3 through heat conduction. The temperature change of the sensor body 3 causes its own resistance value to change, thereby causing the current value in the circuit to change. The temperature of the sensor body 3 is judged according to the current value of the circuit, thereby measuring the temperature of the measured object.
[0021] The outer sleeve 1 also includes a flange 12, which is located on the outer side of the lower part of the sleeve body 11. The flange 12 is a circular ring structure. The flange 12 extends radially outward along the outer wall of the lower part of the sleeve body 11. The upper end surface of the flange 12 is an assembly surface, and the upper end surface of the flange 12 is mounted on the outer wall surface of the bottom of the equipment to be tested.
[0022] like Figure 1 As shown, an extension tube 111 is provided at the bottom of the sleeve body 11. The extension tube 111 extends downward along the bottom surface of the sleeve body 11. The outer diameter of the extension tube 111 is smaller than that of the sleeve body 11. Figure 2 As shown, a boss 112 is provided on the inner side of the bottom of the sleeve body 11, and the boss 112 extends radially inward along the inner wall of the sleeve body 11 to form an annular structure. A guide hole 113 is also provided at the bottom of the sleeve body 11, and the guide hole 113 passes through the side wall of the sleeve body 11. Specifically, one axial end of the guide hole 113 extends to the outer wall of the sleeve body 11, and the other end extends to the radial innermost side of the boss 112. A plurality of guide holes 113 are evenly distributed along the circumference of the sleeve body 11.
[0023] like Figure 2As shown, a liquid blocking sleeve 4 is installed on the inner wall of the sleeve body 11. The liquid blocking sleeve 4 is an annular structure. The upper end surface of the liquid blocking sleeve 4 abuts against the bottom surface of the boss 112 and is sealed and fixed by a sealing ring. A ring body 41 is provided on the top of the liquid blocking sleeve 4. The ring body 41 is a cylindrical structure. The inner sleeve 2 passes through the ring body 41. A sealing ring 3 9 is installed between the outer wall of the inner sleeve 2 and the inner wall of the ring body 41 to prevent the leakage above the liquid blocking sleeve 4 from passing through the liquid blocking sleeve 4 and affecting the circuit components. A liquid accumulation cavity 2 8 is formed between the liquid blocking sleeve 4 and the inner wall of the sleeve body 11, and one axial end of the guide hole 113 is connected to the liquid accumulation cavity 2 8. The outer diameter of the ring body 41 is smaller than the inner diameter of the sleeve body 11. The liquid accumulation cavity 2 8 is located radially outside the ring body 41, and the liquid accumulation cavity 2 8 is located above the liquid blocking sleeve 4.
[0024] like Figure 1 As shown, the outer wall of the sleeve body 11 is installed with a ring sleeve assembly 5, and the ring sleeve assembly 5 is located below the flange 12. Figure 2 The outer wall of the sleeve body 11 is fixedly connected with a ring sleeve 51, and the ring sleeve 51 includes a ring portion 511 located at the top and a sleeve body 512 located below the ring portion 511. The inner circumferential wall of the ring portion 511 is attached to the outer circumferential wall of the sleeve body 11 and fixed to each other. The position of the ring portion 511 is higher than the guide hole 113.
[0025] like Figure 2 As shown, the ring sleeve assembly 5 includes a ring sleeve three 53, and the ring sleeve three 53 includes a sleeve body 2 531 located at the top and a ring portion 2 532 located below the sleeve body 2 531. The sleeve body 2 531 is inserted into the inner wall of the sleeve body 1 512, and the sleeve body 2 531 can move up and down along the inner wall of the sleeve body 1 512. The extension tube 111 passes through the ring portion 2 532, and the outer diameter of the extension tube 111 matches the inner diameter of the ring portion 2 532. The outer wall of the extension tube 111 is threadedly connected with a ring sleeve 2 52, the top of the ring sleeve 2 52 abuts against the bottom of the ring part 2 532, and the ring sleeve 2 52 is driven to rise when it rises. When the sleeve body 2 531 moves to the point where its upper end face abuts against the bottom of the ring part 1 511, the upper end face of the ring part 2 532 abuts against the bottom of the sleeve body 11, and a sealing ring 1 6 is provided between the upper end face of the sleeve body 2 531 and the bottom of the ring part 1 511. The sealing ring 1 6 seals the inner hole of the insert rod 55 inserted into the ring part 1 511 to prevent the leaked liquid from overflowing upwards. A sealing ring 2 7 is provided between the upper end face of the ring part 2 532 and the bottom of the sleeve body 11 to prevent the leaked liquid from flowing downwards.
[0026] like Figure 2 As shown, a liquid accumulation chamber 5311 is formed between the inner wall of the ring sleeve three 53 and the outer wall of the sleeve body 11, and the liquid accumulation chamber 5311 is connected to the side of the guide hole 113 axially away from the liquid accumulation chamber 2 8, so that the leaked liquid that enters the sleeve body 11 after the upper outer wall of the sleeve body 11 is corroded or damaged can flow into the liquid accumulation chamber 2 8, and can flow along the guide hole 113 to the liquid accumulation chamber 5311, and be stored in the liquid accumulation chamber 5311.
[0027] like Figure 2 As shown, the outer wall of the sleeve body 11 is slidably connected to a ring sleeve 4 54, and the bottom of the ring sleeve 4 54 is fixedly connected to an insertion rod 55, which is inserted into the ring portion 1 511. When the upper end surface of the sleeve body 2 531 abuts against the bottom surface of the ring portion 1 511, the upper end surface of the sleeve body 2 531 abuts against the bottom surface of the insertion rod 55, and the ring sleeve 4 54 and the ring portion 1 511 are in a separated state (i.e. Figure 2 As shown in the state shown, the second ring 52 moves downward, and when the second sleeve 531 also moves downward, the power for the second sleeve 531 to move downward comes from its own gravity and the pressure on the fourth ring 54 and the insertion rod 55 (the second sleeve 531 can also be moved downward by applying a downward force to the fourth ring 54). By setting the fourth ring 54 and the insertion rod 55, the third ring 53 can be prevented from being stuck in the highest position and unable to fall.
[0028] The ring sleeve four 54 moves downward together with the insertion rod 55 until the ring sleeve four 54 is hung on the upper end of the ring part 1 511. At this time, the sleeve body 2 531 moves downward until its upper end surface is lower than the lower end surface of the sleeve body 1 512. The operator can observe the situation in the liquid accumulation cavity 1 5311 from the outside to determine the leakage situation in the sleeve body 11, thereby avoiding the risk of bumping due to disassembly of the outer sleeve 1 and improving the service life of the device.
[0029] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A leakage drainage structure of a sensor, comprising an outer sleeve (1), an inner sleeve (2), and a sensor body (3), wherein the inner sleeve (2) is inserted into the outer sleeve (1), and the sensor body (3) is installed in the inner sleeve (2), and the outer sleeve (1) comprises a sleeve body (11), characterized in that: The outer sleeve (1) further comprises a flange (12), the flange (12) being located on the outer side of the lower part of the sleeve body (11), the upper end surface of the flange (12) being an assembly surface, the outer wall of the sleeve body (11) being provided with a ring sleeve assembly (5), the ring sleeve assembly (5) being located below the flange (12), the ring sleeve assembly (5) comprising a ring sleeve three (53), a liquid accumulation cavity one (5311) being formed between the inner wall of the ring sleeve three (53) and the outer wall of the sleeve body (11), a liquid blocking sleeve (4) being installed on the inner wall of the sleeve body (11), a liquid accumulation cavity two (8) being formed between the liquid blocking sleeve (4) and the inner wall of the sleeve body (11), the sleeve body (11) being provided with a guide hole (113), the axial ends of the guide hole (113) being respectively connected with the liquid accumulation cavity two (8) and the liquid accumulation cavity one (5311).
2. A leakage drainage structure of a sensor according to claim 1, characterized in that: The outer wall of the sleeve body (11) is fixedly connected with a ring sleeve 1 (51), the ring sleeve 1 (51) includes a ring portion 1 (511) located at the top and a sleeve body 1 (512) located below the ring portion 1 (511), the ring sleeve 3 (53) includes a sleeve body 2 (531) located at the top and a ring portion 2 (532) located below the sleeve body 2 (531), the sleeve body 2 (531) is inserted into the inner wall of the sleeve body 1 (512), and the sleeve body 2 (531) can move up and down along the inner wall of the sleeve body 1 (512), the sleeve body 1 (11) is fixedly connected with a ring sleeve 1 (51) and the ring sleeve 1 (51) includes a ring portion 1 (511) located at the top and a sleeve body 1 (512) located below the ring portion 1 (511), the sleeve body 2 (531) is inserted into the inner wall of the sleeve body 1 (512), and the sleeve body 2 (531) can move up and down along the inner wall of the sleeve body 1 (512), the sleeve body 1 (11) is fixedly connected with a ring sleeve 1 (51) and the sleeve body 1 (512) is fixedly connected with a ring sleeve 1 (51 ... ) is provided with an extension tube (111) at the bottom, the outer diameter of the extension tube (111) is smaller than that of the sleeve body (11), the extension tube (111) passes through the ring part 2 (532), and the outer diameter of the extension tube (111) matches the inner diameter of the ring part 2 (532), when the upper end surface of the sleeve body 2 (531) abuts against the bottom surface of the ring part 1 (511), the upper end surface of the ring part 2 (532) abuts against the bottom surface of the sleeve body (11), and the sleeve body 2 (531) can be moved to a position where its upper end surface is lower than the lower end surface of the sleeve body 1 (512).
3. A leakage drainage structure of a sensor according to claim 2, characterized in that: The inner circumferential wall of the ring portion 1 (511) and the outer circumferential wall of the sleeve body (11) are attached to and fixed to each other, and the position of the ring portion 1 (511) is higher than the guide hole (113).
4. The leakage drainage structure of a sensor according to claim 2, characterized in that: The outer wall of the sleeve body (11) is slidably connected with a ring sleeve four (54), and the bottom of the ring sleeve four (54) is fixedly connected with an insertion rod (55), and the insertion rod (55) is inserted into the ring part one (511). When the upper end surface of the sleeve body two (531) abuts against the bottom surface of the ring part one (511), the upper end surface of the sleeve body two (531) abuts against the bottom surface of the insertion rod (55), and the ring sleeve four (54) and the ring part one (511) are in a separated state. When the sleeve body two (531) moves downward, the ring sleeve four (54) and the insertion rod (55) move downward together until the ring sleeve four (54) is hung on the upper end of the ring part one (511).
5. The leakage drainage structure of a sensor according to claim 2, characterized in that: The outer wall of the extension tube (111) is threadedly connected with a second ring sleeve (52), and the top of the second ring sleeve (52) abuts against the bottom of the second ring portion (532).
6. The leakage drainage structure of a sensor according to claim 1, characterized in that: A ring body (41) is provided at the top of the liquid-blocking sleeve (4), the inner sleeve (2) passes through the ring body (41), and a sealing ring (9) is installed between the outer wall of the inner sleeve (2) and the inner wall of the ring body (41).
7. A leakage drainage structure for a sensor according to claim 6, characterized in that: The outer diameter of the ring body (41) is smaller than the inner diameter of the sleeve body (11), and the second fluid accumulation chamber (8) is located radially outside the ring body (41).
8. The leakage drainage structure of a sensor according to claim 6, characterized in that: The inner wall of the sleeve body (11) is provided with a boss (112), the upper end surface of the liquid blocking sleeve (4) is in contact with the bottom surface of the boss (112), and the second liquid accumulation chamber (8) is located above the liquid blocking sleeve (4).
9. The leakage drainage structure of a sensor according to claim 8, characterized in that: A sealing ring is installed between the upper end surface of the liquid-blocking sleeve (4) and the bottom surface of the boss (112).
10. The leakage drainage structure of a sensor according to claim 4, characterized in that: A sealing ring (6) is installed on the upper end surface of the sleeve body (531). When the upper end surface of the sleeve body (531) abuts against the bottom surface of the insertion rod (55), the sealing ring (6) inserts the insertion rod (55) into the inner hole of the ring part (511) and seals it.