Temperature sensing device
By employing multiple extension tubes and connecting tubes to form a connection structure with a stepped diameter in the temperature sensor, combined with a spring tube to protect the signal line, the problem of bending deformation of the sensor under radial force is solved, improving the sensor's durability and measurement accuracy, making it suitable for temperature monitoring in high-temperature sterilization environments.
Patent Information
- Application Number
- CN202423309240.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The connection between the measuring end and the gripping part of the existing temperature sensor is prone to bending due to radial force, which can damage the sensor and make it difficult to meet the requirements for accurate temperature monitoring in high-temperature sterilization environments.
Multiple extension tubes and connecting tubes are used to form a connection structure with a stepped diameter. Combined with spring tubes to protect the signal line and avoid bending deformation, the tapered tube design buffers stress, and the addition of tapered tube flared ends and spring tubes to protect the signal line ensures a stable connection.
It effectively avoids bending deformation of the temperature sensor under radial force, improves the sensor's durability and measurement accuracy, reduces the risk of wire breakage and outer sheath damage, and is suitable for temperature monitoring in high-temperature sterilization environments.
Smart Images
Figure CN223756166U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to temperature sensor technical field, specifically a temperature sensing device. BACKGROUND
[0002] When the pharmaceutical enterprise carries out high temperature sterilization, often need to control temperature to the sterilization pot or sterilization cabinet, to avoid temperature too low to kill bacteria, at the same time avoid temperature too high to cause sterilization object to take place damage. And control temperature to the sterilization pot or sterilization cabinet, need to monitor the temperature in the sterilization pot or sterilization cabinet inside, therefore need to use temperature sensor to monitor the temperature in the sterilization pot or sterilization cabinet. In order to meet the requirement of measurement accuracy, the present temperature sensor measuring end is arranged in a thin-walled and small-diameter stainless steel pipe, and the diameter of the holding part is much larger than that of the measuring end, which causes a clear step at the connection between the holding part and the measuring end, and further causes the measuring end to bend when subjected to a radial force, and the temperature sensor is also prone to damage. SUMMARY
[0003] Therefore, the utility model wants to solve the technical problem to provide a kind of temperature sensing device, utilize multiple extension pipes and connecting pipe form the step change in diameter, so that the radial bending of measuring end and holding part is transmitted to the rear end of holding part, avoid the bending deformation of temperature sensor measuring end when subjected to single radial force.
[0004] To solve the above technical problems, the utility model provides the following technical scheme:
[0005] A temperature sensing device comprises a handle, an end part and a temperature sensing probe, the handle comprises a signal wire installation tube, a first connecting tube, a first extension tube, a second connecting tube, a second extension tube and a third connecting tube; the end part comprises a first straight tube, a first arc tube, a second arc tube, a second straight tube and a protective sleeve; the second end of the signal wire installation tube is fixedly connected with the first end of the first connecting tube, the second end of the first connecting tube is fixedly connected with the first end of the first extension tube, the second end of the first extension tube is fixedly connected with the first end of the second connecting tube, the second end of the second connecting tube is fixedly connected with the first end of the second extension tube, the second end of the second extension tube is fixedly connected with the first end of the third extension tube, the first end of the first straight tube is fixedly connected with the first end of the first arc tube, the second end of the first arc tube is fixedly connected with the first end of the second arc tube, the second end of the second arc tube is fixedly connected with the first end of the second straight tube, and the second end of the second straight tube is fixedly connected with the first end of the protective sleeve; one end of the signal wire is sequentially communicated with the temperature sensing probe arranged in the protective sleeve through the signal wire installation tube, the first connecting tube, the first extension tube, the second connecting tube, the second extension tube, the third connecting tube, the first straight tube, the first arc tube, the second arc tube and the second straight tube; wherein the size relationship of the outer diameter D1 of the signal wire installation tube, the outer diameter D2 of the first extension tube, the outer diameter D3 of the second extension tube and the outer diameter D4 of the first straight tube is D1>D2>D3>D4, the first end of the first connecting tube and the first end of the second connecting tube are both the flared ends of tapered tubes, the second end of the first connecting tube and the second end of the second connecting tube are both the flared ends of tapered tubes, the included angle θ between the outer wall of the first connecting tube and the central axis of the first connecting tube is greater than 0° and less than or equal to 23°, the included angle δ between the outer wall of the second connecting tube and the central axis of the second connecting tube is greater than 0° and less than or equal to 23°, and the arc opening direction of the first arc tube is different from that of the second arc tube.
[0006] The temperature sensing device, the handle further comprises a spring tube, the first end of the spring tube is arranged outside the signal wire installation tube, and the second end of the spring tube is arranged in the hole of the signal wire installation tube and is detachably connected with the inner wall of the signal wire installation tube; when the signal wire is connected with the temperature sensing probe, the signal wire passes through the spring tube, and the protective layer of the signal wire is tightly attached to the spring tube.
[0007] The temperature sensing device, the central angle α of the arc of the first arc tube is greater than 90° and less than or equal to 150°.
[0008] The temperature sensing device, the central angle β of the arc of the second arc tube is greater than 0° and less than or equal to 90°.
[0009] The temperature sensing device, the second straight tube segment and the protective sleeve are fixedly connected through a fourth connecting tube, the outer diameter of the second straight tube segment is greater than the outer diameter of the protective sleeve; the fourth connecting tube is a hollow connecting tube with a tapered tube external contour shape.
[0010] The temperature sensing device has the beneficial technical effects that:
[0011] The temperature sensing device has the beneficial technical effects that:
[0012] The temperature sensing device has the beneficial technical effects that:
[0013] The temperature sensing device has the beneficial technical effects that:
[0014] 1. The tapered tube is used as the first connecting tube and the second connecting tube, so that the dirt on the outer wall of the handle part can be easily cleaned.
[0015] 2. The extension tube and the connecting tube form a radial transition section between the handle part and the end part, so that the connection between the end part and the handle part will not be bent and deformed when the end part is subjected to a single radial force, thereby avoiding damage to the temperature sensing device.
[0016] 3. The spring tube is used to protect the signal line, so that the signal line will not be broken or the outer insulation layer will not be damaged when the signal line is repeatedly bent at the signal line installation tube. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 The temperature sensing device has the beneficial technical effects that:
[0018] Figure 2 The temperature sensing device has the beneficial technical effects that:
[0019] Figure 3 The temperature sensing device has the beneficial technical effects that:
[0020] In the figure, 1 is a signal line installation tube, 2 is a first connecting tube, 3 is a first extension tube, 4 is a second connecting tube, 5 is a second extension tube, 6 is a third connecting tube, 7 is a first straight tube, 8 is a first curved tube, 9 is a second curved tube, 10 is a second straight tube, 11 is a fourth connecting tube, 12 is a protective sleeve, 13 is a spring tube, 14 is an annular protrusion, 15 is a signal line, 15-1 is a protective outer layer, 15-2 is a shielding layer, 15-3 is a protective inner layer, 15-4 is a communication line bundle, and 15-5 is a core layer. DETAILED DESCRIPTION
[0021] In this embodiment, asFigure 1 The utility model temperature sensing device, including handle, end and temperature sensing probe, handle includes signal line installation pipe, first connecting pipe, first extension pipe, second connecting pipe, second extension pipe and third connecting pipe, end includes first straight pipe, first arc pipe, second arc pipe, second straight pipe and protection sleeve, signal line installation pipe second end with first connecting pipe first end fixed connection, first connecting pipe second end with first extension pipe first end fixed connection, first extension pipe second end with second connecting pipe first end fixed connection, second connecting pipe second end with second extension pipe first end fixed connection, second extension pipe second end with third extension pipe first end fixed connection, third extension pipe with first straight pipe first end fixed connection, first straight pipe with first arc pipe first end fixed connection, first arc pipe second end with second arc pipe first end fixed connection, second arc pipe second end with second straight pipe first end fixed connection, second straight pipe second end with protection sleeve first end fixed connection, one end of signal line passes through signal line installation pipe, first connecting pipe, first extension pipe, second connecting pipe, second extension pipe, third connecting pipe, first straight pipe, first arc pipe, second arc pipe and second straight pipe in proper order and the temperature sensing probe communication connection set up in protection sleeve, wherein, the size relation of signal line installation pipe outer diameter D1, first extension pipe outer diameter D2, second extension pipe outer diameter D3 and first straight pipe outer diameter D4 is D1>D2>D3>D4, first connecting pipe first end and second connecting pipe first end are all taper pipe flared end, first connecting pipe second end and second connecting pipe second end are all taper pipe flared end, and the included angle θ of first connecting pipe outer wall and first connecting pipe central axis is greater than 0 and less than or equal to 23, preferably 15 ~ 20, in the embodiment, the selected θ is 20, the included angle δ of second connecting pipe outer wall and second connecting pipe central axis is greater than 0 and less than or equal to 23, preferably 15 ~ 20, in the embodiment, the selected δ is 18, the arc opening direction of first arc pipe arc is different from the arc opening direction of second arc pipe arc.
[0022] When the pipe with larger diameter and the pipe with smaller diameter are subjected to bending deformation to make the combination body, the stress change at the connection between the pipe with larger diameter and the pipe with smaller diameter is large, and damage is prone to occur at the connection, therefore, in the utility model, the first connecting pipe, the first extension pipe, the second connecting pipe, the second extension pipe and the third connecting pipe are used to form a connection structure with diameter step change and buffering effect on bending strain between the signal line installation pipe and the first straight pipe, so as to avoid the damage of the pipe connection of the temperature sensing device due to bending caused by artificial misoperation or other mistakes.
[0023] In view of the cable sheath breakage and even the wire breakage of the cable arranged in the hard pipe due to multiple bending, the spring pipe is additionally arranged in the handle part in the utility model, the first end of the spring pipe is arranged outside the signal wire installation pipe, the second end of the spring pipe is arranged in the hole of the signal wire installation pipe and is detachably connected with the inner wall of the signal wire installation pipe, when the signal wire is connected with the temperature sensing probe, the signal wire passes through the spring pipe and the protective layer of the signal wire is tightly attached to the spring pipe. In this way, when the signal wire is bent relative to the signal wire installation pipe, the spring pipe can avoid the cable sheath breakage at the junction of the signal wire and the signal wire installation pipe, and can also avoid the wire breakage inside the signal wire. In the actual use process, a layer of silica gel pipe is additionally sleeved outside the spring pipe, the second end of the silica gel pipe is sleeved on the signal wire installation pipe, and the annular protrusion on the outer wall of the signal wire installation pipe can prevent the silica gel pipe from easily falling off from the signal wire installation pipe. In addition, the signal wire comprises a core layer, a communication wire bundle, a protective inner layer, a shielding layer and a protective outer layer, the wires in the communication wire bundle are arranged axially around the core layer and the communication wire bundle is arranged in the protective inner layer, the protective inner layer is arranged in the shielding layer, and the shielding layer is arranged in the protective outer layer; the protective outer layer near the first end of the signal installation pipe is provided with a tightening ring, as shown in Figure 3 ; wherein the tightening ring can compress the protective outer layer and the protective inner layer and the protective inner layer and the communication wire bundle, so that the protective outer layer and the protective inner layer and the protective inner layer and the communication wire bundle form an airtight structure, avoiding the fluid (air or water vapor) conduction between the medicine pot and the outside through the signal wire inside.
[0024] In the utility model, the central angle α corresponding to the arc of the first arc-shaped pipe is greater than 90° and less than or equal to 150°, which can be selected according to the use environment, and the central angle α selected in the embodiment is 147°; the central angle β corresponding to the arc of the second arc-shaped pipe is greater than 0° and less than or equal to 90°, which can also be selected according to the use environment, and the central angle β selected in the embodiment is 57°. In the embodiment, the central angle α and the central angle β are selected, which exactly meet the perpendicularity of the first straight pipe and the second straight pipe, so that the temperature sensing device of the utility model meets the requirement of temperature measurement of different temperature measuring points in the same installation hole.
[0025] In order to ensure accurate temperature measurement, the protective sleeve is usually made thin to reduce heat loss in the heat transfer process, but in this case, if the second straight pipe and the protective sleeve are made of the same thickness and the same diameter pipe material, the second straight pipe and the protective sleeve will be bent when subjected to bending force, therefore, the second straight pipe section and the protective sleeve are fixedly connected through the fourth connecting pipe, the outer diameter of the second straight pipe section is larger than the outer diameter of the protective sleeve; the fourth connecting pipe is a hollow connecting pipe with a tapered outer shape, and the relationship between the fourth connecting pipe flared end outer diameter d1, the fourth connecting pipe flared end outer diameter d2 and the fourth connecting pipe length L is L: (d1-d2)=50~80, preferably L: (d1-d2)=55~70.
[0026] In this embodiment, the first straight pipe, the first curved pipe, the second curved pipe, the second straight pipe, the fourth connecting pipe and the protective sleeve are integrally machined, that is, a stainless steel pipe is used to machine the first curved pipe, the second curved pipe, the fourth connecting pipe and the protective sleeve, wherein the outer diameters of the first straight pipe, the first curved pipe, the second curved pipe and the second straight pipe are the same, and the fourth connecting pipe is a variable diameter tapered pipe, which realizes the gradual change of the outer diameter of the second straight pipe and the outer diameter of the protective sleeve.
[0027] In addition, as shown in Figure 2 In order to clean the dirt remaining in the handle more conveniently, the connection between the first connecting pipe and the signal line mounting pipe and the first extension pipe and the connection between the second connecting pipe and the first extension pipe and the second extension pipe are rounded and transitioned, so that dirt can be avoided from remaining at the included angle formed by the two surfaces.
[0028] In order to facilitate the insertion of the temperature sensing device end into the monitoring hole with the rubber sealing member plugging, the free end of the protective sleeve is sharpened in this embodiment, so that the free end of the protective sleeve has a relatively sharp tip.
[0029] In the manufacture of the utility model, one end of a stainless steel pipe is sealed and a sharp end is machined, then the temperature sensing probe is placed in the stainless steel pipe and the temperature sensing probe is arranged near the sharp end of the stainless steel pipe, then the stainless steel pipe section as the protective sleeve is subjected to wall thinning treatment, so that the wall thickness of the section of the stainless steel pipe meets the wall thickness requirement of the temperature sensor for pharmaceutical temperature monitoring, and the connection between the protective sleeve and the second straight pipe is subjected to transition machining treatment to machine the fourth connecting pipe, then the first curved pipe and the second curved pipe are machined, then the first straight pipe is laser welded with the handle, and then polishing treatment is performed. In this embodiment, the signal line mounting pipe, the first connecting pipe, the first extension pipe, the second connecting pipe, the second extension pipe and the third connecting pipe in the handle are integrally machined. The signal line is connected with the temperature sensing probe before the temperature sensing probe is placed in the stainless steel pipe. As for the spring pipe, it should be sleeved on the signal line in advance for subsequent processing.
[0030] When the utility model is applied to sterilization pot temperature monitoring, the utility model is not easy to fall off from the monitoring hole, and only has a trace of residual liquid when the handle is stained with liquid, and the stain formed by the trace of residual liquid is also easy to clean, and the connection of the first straight pipe and the third connecting pipe is not easy to deform when the utility model is subjected to a bending force. Moreover, the existence of the spring pipe effectively protects the signal line, avoids damage to the signal line sheath and breakage of the signal line conductor.
[0031] Obviously, the above embodiments are only examples for clearly illustrating but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the patent application claims.
Claims
1. A temperature sensing device, characterized by, The temperature sensor probe comprises a handle, an end part and a temperature sensor probe, the handle comprises a signal line installation tube, a first connecting tube, a first extension tube, a second connecting tube, a second extension tube and a third connecting tube; the end part comprises a first straight tube, a first arc-shaped tube, a second arc-shaped tube, a second straight tube and a protective sleeve tube; the second end of the signal line installation tube is fixedly connected with the first end of the first connecting tube, the second end of the first connecting tube is fixedly connected with the first end of the first extension tube, the second end of the first extension tube is fixedly connected with the first end of the second connecting tube, the second end of the second connecting tube is fixedly connected with the first end of the second extension tube, the second end of the second extension tube is fixedly connected with the first end of the third extension tube, the third extension tube is fixedly connected with the first end of the first straight tube, the first straight tube is fixedly connected with the first end of the first arc-shaped tube, the second end of the first arc-shaped tube is fixedly connected with the first end of the second arc-shaped tube, the second end of the second arc-shaped tube is fixedly connected with the first end of the second straight tube, and the second end of the second straight tube is fixedly connected with the first end of the protective sleeve tube; one end of a signal line is sequentially connected with the temperature sensor probe arranged in the protective sleeve tube through the signal line installation tube, the first connecting tube, the first extension tube, the second connecting tube, the second extension tube, the third connecting tube, the first straight tube, the first arc-shaped tube, the second arc-shaped tube and the second straight tube; wherein the size relationship of the outer diameter D1 of the signal line installation tube, the outer diameter D2 of the first extension tube, the outer diameter D3 of the second extension tube and the outer diameter D4 of the first straight tube is D1>D2>D3>D4, the first end of the first connecting tube and the first end of the second connecting tube are both the flared ends of the conical tubes, the second end of the first connecting tube and the second end of the second connecting tube are both the flared ends of the conical tubes, the angle θ between the outer wall of the first connecting tube and the central axis of the first connecting tube is greater than 0° and less than or equal to 23°, the angle δ between the outer wall of the second connecting tube and the central axis of the second connecting tube is greater than 0° and less than or equal to 23°, and the arc-shaped opening direction of the first arc-shaped tube is different from that of the second arc-shaped tube.
2. The temperature sensing device of claim 1, wherein, The handle further comprises a spring tube, the first end of the spring tube is arranged outside the signal line installation tube, and the second end of the spring tube is arranged in the hole of the signal line installation tube and is detachably connected with the inner wall of the signal line installation tube; when the signal line is connected with the temperature sensor probe, the signal line passes through the spring tube, and the protective layer of the signal line is tightly attached to the spring tube.
3. The temperature sensing device of claim 1, wherein, The central angle α corresponding to the arc shape of the first arc-shaped tube is greater than 90° and less than or equal to 150°.
4. The temperature sensing device of claim 1, wherein, The central angle β corresponding to the arc shape of the second arc-shaped tube is greater than 0° and less than or equal to 90°.
5. The temperature sensing device of claim 1, wherein, The second straight tube segment and the protective sleeve tube are fixedly connected through a fourth connecting tube, and the outer diameter of the second straight tube segment is greater than the outer diameter of the protective sleeve tube; the fourth connecting tube is a hollow connecting tube with a conical tube as the external contour shape.
6. The temperature sensing device of claim 5, wherein, The relationship of the outer diameter d1 of the flared end of the fourth connecting tube, the outer diameter d2 of the flared end of the fourth connecting tube and the length L of the fourth connecting tube is L:(d1-d2)=50-80.
7. The temperature sensing device according to any one of claims 1 to 5, wherein An annular protrusion is arranged on the outer wall of the signal line installation tube.
8. The temperature sensing device according to any one of claims 1 to 5, wherein The signal line comprises a communication wire bundle, a protective inner layer, a shielding layer and a protective outer layer, the communication wire bundle is arranged in the protective inner layer, the protective inner layer is arranged in the shielding layer, and the shielding layer is arranged in the protective outer layer; a tightening ring is arranged on the protective outer layer near the first end of the signal installation tube.