Fixing device for second-class standard platinum resistance thermometer of thermostatic bath for calibration

By designing a second-class standard platinum resistance thermometer fixing device for the constant temperature bath, the problem of difficult stable measurement of medium temperature at different depths in the constant temperature bath is solved, the stable fixing and lifting movement of the thermometer are achieved, and the comprehensiveness and accuracy of data collection are improved.

CN223307717UActive Publication Date: 2025-09-05ANHUI SAIBAO IND TECH RES INST CO LTD
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Patent Information

Application Number
CN202422861866.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-09-05
Estimated Expiration
2034-11-22

AI Technical Summary

Technical Problem

In the existing technology, it is difficult for a second-class standard platinum resistance thermometer to stably measure the temperature of media at different depths in a constant temperature bath, which affects the efficiency and accuracy of data acquisition.

Method used

A fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration is designed. The device includes a fixing base, an adjustment piece, a measuring ruler, a clamping part, and a driving part. By coordinating these components, the thermometer can be stably fixed and moved up and down to facilitate the measurement of medium temperature at different depths.

Benefits of technology

It realizes real-time and comprehensive data collection of the temperature of media at different depths in the constant temperature bath, improves the comprehensiveness and efficiency of data collection, and collects temperature data in real time and intuitively through the scale, which improves the accuracy of data collection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of platinum resistance thermometer fixing, in particular to a fixing device for a second-class standard platinum resistance thermometer of a thermostatic bath for calibration, which comprises a fixing seat and an adjusting part arranged on the fixing seat, and the adjusting part is used for fixing the fixing seat in the thermostatic bath. The fixing seat is used for fixing the thermostatic bath II standard platinum resistance thermometer, a supporting surface is erected on the fixing seat in the thermostatic bath, and the measuring ruler strip is connected with a through hole formed in the fixing seat in a penetrating manner. According to the utility model, the supporting surface can be erected at the top in the thermostatic bath, so that the second-class standard platinum resistance thermometer can be fixed between the auxiliary fixing part and the clamping part, and the measuring ruler strip is driven to lift through the driving part, so that the second-class standard platinum resistance thermometer can be synchronously driven to lift through the transverse connecting rod; in this way, the temperatures of media at different depths can be detected in real time in the calibration process, and the comprehensiveness and efficiency of data acquisition are improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of fixing platinum resistance thermometers, in particular to a fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration. Background Art

[0002] After prolonged use or environmental changes, the accuracy of the temperature sensors within a thermostatic bath may be affected, resulting in relatively large errors. Therefore, regular calibration of the temperature sensors within the bath is necessary. Calibration of the temperature sensors within the bath is typically performed by filling the bath with a fluid with high specific heat capacity to ensure stable and uniform temperature. Second-grade standard platinum resistance thermometers are then used for measurement, comparison, and calibration.

[0003] During the calibration of the temperature sensor in the constant temperature bath, since the second-class standard platinum resistance thermometer is generally fixed at a specified position in the constant temperature bath, it is difficult to stably measure the temperature of the medium at different depths in the constant temperature bath, which has a significant impact on data acquisition efficiency and ultimately affects the calibration efficiency of the temperature sensor. Utility Model Content

[0004] In view of this, the purpose of the present invention is to propose a fixing device for a second-class standard platinum resistance thermometer for a calibration constant temperature bath, so as to solve the problem that it is difficult to stably measure the temperature of the medium at different depths in the constant temperature bath, which has a great impact on the data acquisition efficiency.

[0005] Based on the above objectives, the present invention provides a fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration, comprising a fixing base and an adjusting member provided on the fixing base, wherein the adjusting member is used to fix the fixing base in the constant temperature bath and enable the fixing base to form a support surface in the constant temperature bath. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration further comprises:

[0006] A measuring ruler strip is connected to the through hole provided on the fixing seat.

[0007] A horizontal connecting rod is fixed to the bottom end of the measuring ruler.

[0008] A clamping portion is provided at one end of the horizontal connecting rod, and the clamping portion is used to clamp and fix the bottom end of the protection tube of the second-class standard platinum resistance thermometer.

[0009] An auxiliary fixing portion is provided on the fixing seat, and the auxiliary fixing portion is used for limiting and supporting the protection tube of the second-class standard platinum resistance thermometer.

[0010] The driving part is used to drive the measuring ruler to perform linear lifting motion along the vertical direction, so that the second-class standard platinum resistance thermometer in the clamping part can measure the medium temperature at different depths in the constant temperature bath.

[0011] Preferably, the clamping portion comprises:

[0012] A support seat is fixed to one end of the horizontal connecting rod.

[0013] Two clamping blocks are relatively slidably arranged on the top of the support seat.

[0014] A driving member is used to drive the two clamping blocks to move closer to or away from each other.

[0015] Preferably, the clamping portion further comprises:

[0016] A mounting groove is provided at the bottom of the support base.

[0017] A buffer block is slidably sleeved in the installation groove.

[0018] A spring is provided between the buffer block and the top of the installation slot.

[0019] Preferably, two ends of the spring are respectively fixed on the top of the buffer block and the inner wall of the mounting groove.

[0020] Preferably, the auxiliary fixing portion includes:

[0021] A limiting groove is provided on the fixing seat.

[0022] A movable frame is slidably sleeved in the limiting groove.

[0023] The supporting rollers arranged on the movable frame are rotated.

[0024] A groove is provided on the fixing seat, and a support roller is rotatably provided in the groove.

[0025] A positioning bolt is threadedly mounted on the movable frame, and the positioning bolt is used to fix the movable frame after it has moved.

[0026] Preferably, one side of the movable frame is located outside the limiting groove, and the groove is located within the coverage range of the movable frame.

[0027] Preferably, the two support rollers are distributed opposite to each other in the transverse direction, and the diameters of the two ends of the support rollers are larger than the diameter of the middle section.

[0028] Preferably, the support seat corresponds to the gap between the two support rollers.

[0029] The beneficial effects of the utility model are as follows: the utility model can set up a support surface on the top of the constant temperature bath through the coordinated use of structures such as the auxiliary fixing part, the clamping part, the measuring ruler and the driving part, so as to facilitate fixing the second-class standard platinum resistance thermometer between the auxiliary fixing part and the clamping part, and the measuring ruler is driven to rise and fall by the driving part, and the second-class standard platinum resistance thermometer can be synchronously driven to rise and fall through the horizontal connecting rod, so that the temperature of the medium at different depths can be detected in real time during the calibration process, thereby improving the comprehensiveness and efficiency of data collection, and the temperature data at different depths can be collected in real time and intuitively through the depth scale on the measuring ruler, thereby improving the accuracy of data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 A three-dimensional diagram of the present invention Figure 1 ;

[0032] Figure 2 A three-dimensional diagram of the present invention Figure 2 ;

[0033] Figure 3 A three-dimensional diagram of the present invention Figure 3 ;

[0034] Figure 4 A three-dimensional diagram of the present invention Figure 4 ;

[0035] Figure 5 A three-dimensional diagram of the present invention Figure 5 .

[0036] The following are marked in the figure:

[0037] 1. Fixed seat; 2. Perforation; 3. Measuring rack; 4. Driving part; 5. Auxiliary fixing part; 51. Limiting groove; 52. Moving frame; 53. Positioning bolt; 54. Groove; 55. Support roller; 6. Horizontal connecting rod; 7. Adjusting part; 8. Clamping part; 81. Support seat; 82. Clamping block; 83. Driving part; 84. Mounting groove; 85. Buffer block; 86. Spring. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0039] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0040] like Figures 1 to 2 As shown, a fixing device for calibrating a second-class standard platinum resistance thermometer in a constant temperature bath, comprising a fixing seat 1 and an adjusting member 7 provided on the fixing seat 1, the adjusting member 7 comprising an extension block fixed to the vertical surface of the fixing seat 1 and a sliding block slidably sleeved on the outside of the extension block, a clamping bolt being threadedly mounted on the sliding block, and a protrusion being fixed on the bottom of the fixing seat 1 and the sliding block, by pushing the sliding block to slide on the extension block, so that the protrusion at the bottom of the fixing seat 1 and the protrusion at the bottom of the sliding block respectively abut against the opposite surfaces in the constant temperature bath, and the clamping bolt is screwed so that the bottom end of the clamping bolt is tightly abutted between the sliding block and the extension block, thereby fixing the position of the sliding block, so that the fixing seat 1 and the sliding block can be stably fixed in the constant temperature bath, the adjusting member 7 is used to fix the fixing seat 1 in the constant temperature bath, and to enable the fixing seat 1 to set up a supporting surface in the constant temperature bath, the fixing device for calibrating a second-class standard platinum resistance thermometer in a constant temperature bath also includes:

[0041] A measuring ruler strip 3 is inserted and connected with the through hole 2 provided on the fixing base 1 . A scale is provided on the vertical surface of the measuring ruler strip 3 , and the scale strip and the tooth surface of the measuring ruler strip 3 are arranged opposite to each other.

[0042] A horizontal connecting rod 6 is fixed to the bottom end of the measuring ruler 3.

[0043] A clamping portion 8 is provided at one end of the horizontal connecting rod 6 and is used to clamp and fix the bottom end of the protection tube of the second-class standard platinum resistance thermometer.

[0044] The auxiliary fixing portion 5 is provided on the fixing base 1 and is used for limiting and supporting the protection tube of the second-class standard platinum resistance thermometer.

[0045] The driving part 4 includes a spur gear that rotates on the top of the fixed base 1, a driving motor for driving the spur gear to rotate, and the spur gear is engaged with the measuring scale 3. The driving part 4 is used to drive the measuring scale 3 to perform linear lifting motion along the vertical direction, so that the second-class standard platinum resistance thermometer in the clamping part 8 measures the medium temperature at different depths in the constant temperature bath.

[0046] like Figure 2 and Figure 4 As shown, the clamping portion 8 includes:

[0047] A support seat 81 fixed to one end of the horizontal connecting rod 6.

[0048] Two clamping blocks 82 are relatively slidably disposed on the top of the support base 81 .

[0049] A driving member 83 is used to drive the two clamping blocks 82 to move closer to or away from each other. The driving member 83 includes a screw that is rotatably arranged on the top of the support seat 81, and a servo motor that drives the screw to rotate. The two clamping blocks 82 are relatively threadedly sleeved on the two ends of the outside of the screw, and the opposite surfaces of the two clamping blocks 82 are provided with an anti-slip layer. The bottom end of the protective tube of the second-class standard platinum resistance thermometer is placed between the two clamping blocks 82, and then the two clamping blocks 82 are driven closer to each other by operating the driving member 83. In this way, the bottom end of the protective tube of the second-class standard platinum resistance thermometer can be clamped and fixed, and the operation is simple and efficient.

[0050] like Figure 5 As shown, the clamping portion 8 also includes:

[0051] A mounting groove 84 is provided at the bottom of the support base 81 .

[0052] The buffer block 85 is slidably mounted in the mounting groove 84. The buffer block 85 is used to prevent a rigid collision between the support base 81 and the bottom of the constant temperature bath when the support base 81 moves downward and touches the bottom of the constant temperature bath, thereby preventing the detection accuracy of the second-class standard platinum resistance thermometer from being affected.

[0053] A spring 86 is provided between the buffer block 85 and the top of the mounting groove 84 .

[0054] Two ends of the spring 86 are fixed to the top of the buffer block 85 and the inner wall of the mounting groove 84 respectively.

[0055] like Figures 1 to 3 As shown, the auxiliary fixing portion 5 includes:

[0056] A limiting groove 51 is provided on the fixing base 1 .

[0057] The movable frame 52 is slidably mounted in the limiting groove 51 .

[0058] The support roller 55 provided on the moving frame 52 is rotated.

[0059] A groove 54 is provided on the fixing base 1 , and a support roller 55 is rotatably provided in the groove 54 .

[0060] The positioning bolts 53 are threadedly mounted on the movable frame 52 , and the positioning bolts 53 are used to fix the movable frame 52 after it moves.

[0061] One side of the movable frame 52 is located outside the limiting groove 51 , and the groove 54 is located within the coverage range of the movable frame 52 .

[0062] The two support rollers 55 are oppositely distributed in the transverse direction, and the diameters of the two ends of the support roller 55 are larger than the diameter of the middle section.

[0063] With such a design, when fixing the second-class standard platinum resistance thermometer, the bottom end of the protective tube of the second-class standard platinum resistance thermometer is first passed from top to bottom between the two support rollers 55 until the bottom end of the protective tube contacts the support seat 81, and then the driving member 83 is controlled to drive the two clamping blocks 82 to approach each other and clamp and fix the bottom end of the protective tube. In this way, when the measuring scale 3 is driven to rise and fall by controlling the driving part 4, the measuring scale 3 can synchronously drive the clamping part 8 and the protective tube of the second-class standard platinum resistance thermometer to rise and fall synchronously. The two support rollers can limit and support the middle section or top end of the protective tube, so that the protective tube remains stable during the rise and fall. In this way, the medium temperature at different depths in the constant temperature bath can be measured in real time and comprehensively, thereby improving the comprehensiveness and efficiency of data collection.

[0064] like Figure 2 As shown, the support seat 81 corresponds to the gap between the two support rollers 55. Such a design can keep the second-class standard platinum resistance thermometer relatively stable during lifting and lowering, avoiding tipping and damage.

[0065] Working principle: by pushing the sliding block to slide on the extension block, the convex block at the bottom of the fixed seat 1 and the convex block at the bottom of the sliding block are respectively in contact with the opposite surfaces in the constant temperature bath, and the tightening bolt is screwed so that the bottom end of the tightening bolt is tightly in contact between the sliding block and the extension block to fix the position of the sliding block, so that the fixed seat 1 and the sliding block can be stably fixed in the constant temperature bath. After the fixed seat 1 is fixed in the constant temperature bath, the fixing operation of the second-class standard platinum resistance thermometer can be carried out. First, the bottom end of the protective tube of the second-class standard platinum resistance thermometer is passed from top to bottom between the two support rollers 55 until the protective tube is fixed. The bottom end of the protective tube is pressed against the support seat 81, and then the driving member 83 is controlled to drive the two clamping blocks 82 to approach each other and clamp the bottom end of the protective tube. In this way, when the measuring scale 3 is driven to rise and fall by the driving part 4, the measuring scale 3 can synchronously drive the clamping part 8 and the protective tube of the second-class standard platinum resistance thermometer to rise and fall synchronously. The two supporting rollers can limit the support of the middle section or the top end of the protective tube, so that the protective tube remains stable during the rise and fall. In this way, the medium temperature at different depths in the constant temperature bath can be measured in real time and comprehensively, thereby improving the comprehensiveness and efficiency of data collection.

[0066] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0067] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration, comprising a fixing seat (1) and an adjusting member (7) provided on the fixing seat (1), wherein the adjusting member (7) is used to fix the fixing seat (1) in the constant temperature bath and to enable the fixing seat (1) to form a supporting surface in the constant temperature bath, characterized in that: The second-class standard platinum resistance thermometer fixing device for calibration constant temperature bath also includes: a measuring ruler (3) inserted and connected to the through hole (2) provided on the fixing seat (1); A horizontal connecting rod (6) fixed to the bottom end of the measuring ruler (3); A clamping portion (8) is provided at one end of the horizontal connecting rod (6), and the clamping portion (8) is used to clamp and fix the bottom end of the protection tube of the second-class standard platinum resistance thermometer; An auxiliary fixing portion (5) provided on the fixing seat (1), the auxiliary fixing portion (5) being used for limiting and supporting a protection tube of a second-class standard platinum resistance thermometer; The driving part (4) is used to drive the measuring ruler (3) to perform linear lifting motion along the vertical direction, so that the second-class standard platinum resistance thermometer in the clamping part (8) measures the temperature of the medium at different depths in the constant temperature bath.

2. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 1, characterized in that: The clamping portion (8) comprises: A support seat (81) fixed to one end of the horizontal connecting rod (6); Two clamping blocks (82) are relatively slidably arranged on the top of the support seat (81); A driving member (83) is used for driving the two clamping blocks (82) to move closer to or away from each other.

3. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 2, characterized in that: The clamping portion (8) further comprises: A mounting groove (84) provided at the bottom of the support seat (81); a buffer block (85) slidably sleeved in the mounting groove (84); A spring (86) is provided between the buffer block (85) and the top of the mounting groove (84).

4. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 3, characterized in that: The two ends of the spring (86) are respectively fixed on the top of the buffer block (85) and the inner wall of the mounting groove (84).

5. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 4, characterized in that: The auxiliary fixing portion (5) comprises: A limiting groove (51) provided on the fixing seat (1); A movable frame (52) slidably sleeved in the limiting groove (51); Rotating a support roller (55) provided on the movable frame (52); A groove (54) is provided on the fixing seat (1), and a support roller (55) is also rotatably provided in the groove (54); A positioning bolt (53) is threadedly mounted on the movable frame (52), and the positioning bolt (53) is used to fix the movable frame (52) after it moves.

6. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 5, characterized in that: One side of the movable frame (52) is located outside the limiting groove (51), and the groove (54) is located within the coverage range of the movable frame (52).

7. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 6, characterized in that: The two support rollers (55) are distributed opposite to each other in the transverse direction, and the diameters of the two ends of the support roller (55) are larger than the diameter of the middle section.

8. The fixing device for a second-class standard platinum resistance thermometer in a constant temperature bath for calibration according to claim 7, characterized in that: The support seat (81) corresponds to the gap between the two support rollers (55).