An oil surface temperature gauge calibration device

Abstract

The utility model relates to a kind of oil surface thermometer calibration device, and the utility model relates to thermometer calibration technical field, one mounting plate is located in box;The bottom of one mounting plate is equipped with lifting mechanism;Semiconductor refrigeration sheet is fixed on one mounting plate;Semiconductor refrigeration sheet is connected with external power supply;Thermal conduction calibration block is located on semiconductor refrigeration sheet, and is equipped with placing hole on thermal conduction calibration block;Placing mechanism is equipped on the left side of box;Clamping mechanism is equipped on the right side of box;Fixed mechanism is equipped below clamping mechanism, fixed groove is opened on the box, and fixed mechanism is equipped in fixed groove;Thermal conduction calibration block and semiconductor refrigeration sheet cooperate, without oil immersion, can simulate calibration temperature, avoid oil pollution probe of oil surface thermometer;Adapt to probe of different lengths, ensure that probe and thermal conduction calibration block are closely contacted in calibration process, improve calibration precision, guarantee the stability of calibration environment.

Description

Technical Field

[0001] This utility model relates to the field of thermometer calibration technology, specifically to an oil level thermometer calibration device. Background Technology

[0002] Traditional oil level thermometer calibration typically employs an oil immersion method, where the thermometer probe is submerged in a constant-temperature oil bath, and calibration is performed by comparing the oil bath temperature with the thermometer's displayed temperature. However, this method carries the risk of oil contamination of the probe, is cumbersome, and incurs high maintenance costs for the oil bath. Therefore, an oil level thermometer calibration device is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing an oil surface thermometer calibration device. This device uses a thermally conductive calibration block and a semiconductor cooling chip to simulate and calibrate temperatures without oil immersion, thus avoiding oil contamination of the oil surface thermometer probe. It is adaptable to probes of different lengths, ensuring close contact between the probe and the thermally conductive calibration block during calibration, improving calibration accuracy, and guaranteeing the stability of the calibration environment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a housing and a door; the door is provided on the opening of the front side wall of the housing;

[0005] It also includes:

[0006] Mounting plate number one is located inside the box; a lifting mechanism is provided at the bottom of mounting plate number one.

[0007] A semiconductor refrigeration chip is fixed to a mounting plate No. 1; the semiconductor refrigeration chip is connected to an external power supply.

[0008] A thermally conductive calibration block is disposed on a semiconductor cooling chip, and a placement hole is provided on the thermally conductive calibration block;

[0009] A placement mechanism is located on the left side of the box body;

[0010] A clamping mechanism is located on the right side of the housing;

[0011] The fixing mechanism is located below the clamping mechanism, and a fixing groove is provided on the box body, with the fixing mechanism located in the fixing groove.

[0012] Preferably, the lifting mechanism includes: a lifting internal threaded tube, a lifting screw, a first hand-tightening mechanism, a first limiting tube, and a first limiting rod; the lifting internal threaded tube is fixed to the bottom left side of the first mounting plate, and the lifting screw is threadedly inserted into the lifting internal threaded tube, with the bottom of the lifting screw screw screwed into the housing via a bearing; a first hand-tightening mechanism is fixedly fitted onto the bottom of the lifting screw; a first limiting tube is fixed to the bottom right side of the first mounting plate, and a first limiting rod is movably inserted into the first limiting tube, with the first limiting rod fixed to the housing.

[0013] Preferably, four insert rods are fixed in a ring on the ring wall of the thermally conductive calibration block. The insert rods are in an "L" shape and are respectively inserted into the four corners of the first mounting plate.

[0014] Preferably, the placement mechanism comprises:

[0015] The placement rack is located above the box body and has an open structure on the front and top sides. The placement rack is fixed to the box body by support legs. A wire groove is provided at the bottom of the placement rack.

[0016] Two rubber blocks are provided, and each is fixed to the inner bottom plate of the placement frame. The two rubber blocks are respectively located on the left and right sides of the wire trough.

[0017] The second rubber block, there are two of them, and they are respectively placed on the left and right sides of the placement rack;

[0018] Two placement screws are provided, and they are threadedly connected to the left and right side walls of the placement frame, respectively. The outer end of the placement screw is fixed with a No. 2 hand screw, and the inner end of the placement screw is fixed with a No. 2 rubber block.

[0019] Preferably, the clamping mechanism comprises:

[0020] Two electric actuators are provided, each fixed to the top plate of the housing. The electric actuator is connected to an external power source. The movable end of the electric actuator is connected to a connecting rod with a zigzag structure.

[0021] A retaining ring is fixed between the two connecting rods;

[0022] The number of electric actuators is several, and they are fixed in a ring on the inner wall of the fixed ring. The electric actuators are connected to an external power source.

[0023] There are several No. 3 rubber blocks, each fixed to the movable end of the No. 2 electric push rod.

[0024] Preferably, the fixing mechanism comprises:

[0025] The fourth rubber block consists of two blocks, each placed in a fixed groove. The inner end of the fourth rubber block has a through hole, which is connected to the box body.

[0026] The second limiting tube has two parts, which are fixed to the front side of the outer wall of the fourth rubber block. The second limiting rod is movably inserted into the second limiting tube and fixed in the fixing groove.

[0027] Two fixed internal threaded tubes are provided, and they are respectively fixed on the rear side of the outer wall of the fourth rubber block. A fixing screw is inserted into the fixed internal threaded tube by threaded connection, and the fixing screw is screwed into the fixing groove by bearing.

[0028] Mounting plate No. 2 is fixed in the fixing groove and is located above the fixing internal threaded tube; Mounting plate No. 2 has a No. 1 rotating shaft screwed to its left and right sides by bearings, and the lower end of the No. 1 rotating shaft is screwed to the fixing screw by a bevel gear pair.

[0029] The second rotating shaft has two ends screwed into fixed grooves by bearings; the second rotating shaft is connected to the first rotating shaft by a bevel gear pair; and a rotating wheel is fixedly fitted in the middle of the second rotating shaft.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] 1. By using a thermally conductive calibration block and a semiconductor cooling chip, the calibration temperature can be simulated without oil immersion, thus avoiding oil contamination of the probe of the oil surface thermometer;

[0032] 2. The height of the thermal calibration block can be flexibly adjusted via a lifting mechanism to accommodate probes of different lengths;

[0033] 3. The dial and probe of the oil surface thermometer are fixed by the placement mechanism and clamping mechanism to ensure that the probe is in close contact with the thermally conductive calibration block during the calibration process, thereby improving the calibration accuracy;

[0034] 4. Temperature leakage is prevented by fixing mechanisms to ensure the stability of the calibration environment. Attached Figure Description

[0035] Figure 1 This is the southwest isometric view of this utility model.

[0036] Figure 2 yes Figure 1 Enlarged view of part A in the image.

[0037] Figure 3 yes Figure 1 Enlarged view of part B in the image.

[0038] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0039] Figure 5 This is a structural schematic diagram of the fixing mechanism in this utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Box body, 1-1 fixing slot, 2. Door body, 3. No. 1 mounting plate, 4. Lifting mechanism, 4-1 lifting internal threaded tube, 4-2 lifting screw, 4-3 No. 1 hand-tightening screw, 4-4 No. 1 limit tube, 4-5 No. 1 limit rod, 5. Semiconductor cooling chip, 6. Thermal calibration block, 6-1 placement hole, 7. Insertion rod, 8. Placement mechanism, 8-1 placement rack, 8-2 wire groove, 8-3 No. 1 rubber block, 8-4 No. 2 rubber block, 8-5 placement screw, 8-6 No. 2 hand-tightening screw. 8-6, clamping mechanism 9, electric push rod 1 9-1, connecting rod 9-2, fixing ring 9-3, electric push rod 2 9-4, rubber block 3 9-5, fixing mechanism 10, rubber block 4 10-1, limit tube 2 10-2, limit rod 2 10-3, fixed internal thread tube 10-4, fixing screw 10-5, mounting plate 2 10-6, rotating shaft 10-7, rotating shaft 2 10-8, rotating wheel 10-9. Detailed Implementation

[0042] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] The specific implementation method adopts the following technical solution:

[0044] Please see Figure 1-5 This embodiment includes a box body 1 and a door body 2; the door body 2 is provided on the opening of the front side wall of the box body 1;

[0045] It also includes:

[0046] Mounting plate 3 is located inside housing 1. A lifting mechanism 4 is provided at the bottom of mounting plate 3. The lifting mechanism 4 includes: a lifting internal threaded tube 4-1, a lifting screw 4-2, a first hand-tightening mechanism 4-3, a first limiting tube 4-4, and a first limiting rod 4-5. The lifting internal threaded tube 4-1 is fixed to the bottom left side of mounting plate 3. The lifting screw 4-2 is threadedly inserted into the lifting internal threaded tube 4-1, and the bottom of the lifting screw 4-2 is screwed into housing 1 via a bearing. The first hand-tightening mechanism 4-3 is fixedly fitted onto the bottom of the lifting screw 4-2. A first limiting tube 4-4 is fixed to the bottom right side of mounting plate 3. A first limiting rod 4-5 is movably inserted into the first limiting tube 4-4 and fixed to housing 1.

[0047] The semiconductor cooling chip 5 is fixed on the first mounting plate 3; the semiconductor cooling chip 5 is connected to an external power supply; the specific model of the semiconductor cooling chip 5 is purchased and installed directly from the market according to the actual usage requirements.

[0048] The thermally conductive calibration block 6 is disposed on the semiconductor cooling chip 5, and the thermally conductive calibration block 6 has a placement hole 6-1; four insertion rods 7 are fixed in a ring on the ring wall of the thermally conductive calibration block 6, the insertion rods 7 are in an "L" shape, and the four insertion rods 7 are respectively inserted into the four corners of the first mounting plate 3.

[0049] Placement mechanism 8, which is located on the left side of the housing 1; the placement mechanism 8 includes:

[0050] The placement rack 8-1 is located above the box 1. The placement rack 8-1 has an open structure on the front and top sides. The placement rack 8-1 is fixed to the box 1 by support legs. A wire groove 8-2 is provided at the bottom of the placement rack 8-1.

[0051] Two rubber blocks 8-3 are provided, and they are fixed on the inner bottom plate of the placement frame 8-1 respectively. The two rubber blocks 8-3 are respectively located on the left and right sides of the wire groove 8-2.

[0052] Two rubber blocks 8-4 are provided, and are respectively placed on the left and right sides of the placement rack 8-1.

[0053] Placement screws 8-5 are provided, and there are two placement screws 8-5, which are respectively threaded through the left and right side walls of the placement frame 8-1; the outer end of the placement screw 8-5 is fixed with a second hand screw 8-6, and the inner end of the placement screw 8-5 is fixed with a second rubber block 8-4.

[0054] Clamping mechanism 9, wherein the clamping mechanism 9 is disposed on the right side of the housing 1; the clamping mechanism 9 comprises:

[0055] Two electric actuators 9-1 are provided, each fixed to the top plate of housing 1 by bolts. The electric actuators 9-1 are connected to an external power source. The specific model of the electric actuator 9-1 is purchased and installed directly from the market according to actual usage requirements. The movable end of the electric actuator 9-1 is connected to a connecting rod 9-2, which has a zigzag structure.

[0056] A retaining ring 9-3 is fixed between two connecting rods 9-2;

[0057] The number of electric actuators 9-4 is several, and they are fixed in a ring on the inner ring wall of the fixing ring 9-3. The electric actuators 9-4 are connected to an external power source. The specific model of the electric actuators 9-4 is purchased, installed and used directly from the market according to the actual use requirements.

[0058] There are several No. 3 rubber blocks 9-5, and they are fixed to the movable end of No. 2 electric push rod 9-4 respectively.

[0059] The fixing mechanism 10 is located below the clamping mechanism 9. A fixing groove 1-1 is provided on the housing 1, and the fixing mechanism 10 is disposed within the fixing groove 1-1. The fixing mechanism 10 includes:

[0060] Rubber block 10-1 No. 4, there are two No. 4 rubber blocks 10-1, and they are respectively set in the fixing groove 1-1. The inner end of the No. 4 rubber block 10-1 is provided with a through hole, and the through hole is connected to the box body 1.

[0061] The second limiting tube 10-2, there are two of them, and they are respectively fixed on the front side of the outer wall of the fourth rubber block 10-1. The second limiting rod 10-3 is movably inserted in the second limiting tube 10-2 and the second limiting rod 10-3 is fixed in the fixing groove 1-1.

[0062] Two fixed internal threaded tubes 10-4 are provided, and they are respectively fixed on the rear side of the outer wall of the fourth rubber block 10-1. A fixing screw 10-5 is inserted into the fixed internal threaded tube 10-4 by threaded connection. The fixing screw 10-5 is screwed into the fixing groove 1-1 by bearing.

[0063] Mounting plate 10-6 is fixed in the fixing groove 1-1 and is positioned above the fixing internal thread tube 10-4. Mounting plate 10-6 is screwed to the left and right sides of mounting plate 10-6 via bearings and shaft 10-7. The lower end of shaft 10-7 is screwed to fixing screw 10-5 via bevel gear pair.

[0064] The second rotating shaft 10-8 has its two ends screwed into the fixed groove 1-1 by bearings; the second rotating shaft 10-8 is connected to the first rotating shaft 10-7 by a bevel gear pair; and a rotating wheel 10-9 is fixedly fitted in the middle of the second rotating shaft 10-8.

[0065] When using this utility model, select a thermally conductive calibration block 6 with a corresponding placement hole 6-1 according to the probe model of the oil surface thermometer to be calibrated; open the door 2, place the thermally conductive calibration block 6 on the thermoelectric cooler 5, and insert the rods 7 into the first mounting plate 3 respectively; turn the first hand screw 4-3 to rotate the lifting screw 4-2, and under the action of the first limiting rod 4-5 and the first limiting tube 4-4, the first mounting plate 3 rises, driving the thermally conductive calibration block 6 to rise, so that the probe of the oil surface thermometer can be inserted into the placement hole 6-1 of the thermally conductive calibration block 6; start the thermoelectric cooler 5 so that the temperature of the thermoelectric cooler 5 is the temperature to be calibrated, and the temperature of the thermoelectric cooler 5 is transferred to the thermally conductive calibration block 6;

[0066] Place the dial of the oil surface thermometer in the placement rack 8-1. Both round and square dials can be placed on the first rubber block 8-3. Turn the second hand screw 8-6 to rotate the placement screw 8-5, causing the second rubber block 8-4 to abut against the dial of the oil surface thermometer. Place the upper end of the probe of the oil surface thermometer in the fixing ring 9-3. Activate the second electric push rod 9-4 to fix the upper end of the probe of the oil surface thermometer with several third rubber blocks 9-5. Activate the first electric push rod 9-1 to lower the probe of the oil surface thermometer into the housing 1. The bottom of the probe of the oil surface thermometer is inserted into the placement hole 6-1 of the thermal calibration block 6.

[0067] Rotating the wheel 10-9 causes the second shaft 10-8 to rotate, which in turn drives the first shaft 10-7 to rotate, causing the fixing screw 10-5 to rotate. Under the action of the second limiting tube 10-2 and the second limiting rod 10-3, the two fourth rubber blocks 10-1 merge together, fixing and sealing the area above the probe of the oil surface thermometer to prevent temperature leakage inside the housing 1.

[0068] The temperature of the thermoelectric cooler 5 is transferred to the thermal calibration block 6. The probe of the oil surface thermometer detects the temperature of the thermal calibration block 6 and compares the dial temperature of the oil surface thermometer with the temperature of the thermoelectric cooler 5 to see if the temperature is consistent or the error is small. This is used for calibration without the need for oil immersion, thus avoiding contamination of the probe of the oil surface thermometer.

[0069] Compared with the prior art, the beneficial effects of this utility model are:

[0070] 1. By using a thermally conductive calibration block 6 and a semiconductor cooling chip 5, the calibration temperature can be simulated without oil immersion, thus avoiding oil contamination of the probe of the oil surface thermometer;

[0071] 2. Through the coordinated action of mounting plate 3, lifting screw 4-2 and limit rod 4-5, the height of thermal calibration block 6 can be flexibly adjusted to accommodate probes of different lengths.

[0072] 3. Use rubber block 8-4, fixing ring 9-3 and rubber block 9-5 to fix the dial and probe of the oil surface thermometer, ensuring that the probe is in close contact with the thermally conductive calibration block 6 during the calibration process, thereby improving the calibration accuracy;

[0073] 4. The chamber 1 is sealed by the rotating wheel 10-9, the second rotating shaft 10-8, and the fourth rubber block 10-1 to prevent temperature leakage and ensure the stability of the calibration environment.

[0074] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An oil level thermometer calibration device, comprising a housing (1) and a door (2); the door (2) is provided on the opening of the front side wall of the housing (1); Its features are, It also includes: Mounting plate (3) No. 1 is located inside the box (1); a lifting mechanism (4) is provided at the bottom of mounting plate (3); A semiconductor cooling chip (5) is fixed on a mounting plate (3); the semiconductor cooling chip (5) is connected to an external power supply. Thermal calibration block (6), the thermal calibration block (6) is disposed on the semiconductor cooling chip (5), and the thermal calibration block (6) is provided with a placement hole (6-1); Placement mechanism (8), wherein the placement mechanism (8) is located on the left side of the box body (1); Clamping mechanism (9), wherein the clamping mechanism (9) is located on the right side of the housing (1); The fixing mechanism (10) is located below the clamping mechanism (9). A fixing groove (1-1) is provided on the box body (1), and the fixing mechanism (10) is located in the fixing groove (1-1).

2. The oil level thermometer calibration device according to claim 1, characterized in that: The lifting mechanism (4) includes: a lifting internal threaded tube (4-1), a lifting screw (4-2), a first hand screw (4-3), a first limiting tube (4-4), and a first limiting rod (4-5); the lifting internal threaded tube (4-1) is fixed to the bottom left side of the first mounting plate (3), the lifting screw (4-2) is inserted into the lifting internal threaded tube (4-1) by threaded connection, and the bottom of the lifting screw (4-2) is screwed into the housing (1) by bearing; the bottom of the lifting screw (4-2) is fitted and fixed with a first hand screw (4-3); the bottom right side of the first mounting plate (3) is fixed with a first limiting tube (4-4), the first limiting rod (4-5) is movably inserted into the first limiting tube (4-4), and the first limiting rod (4-5) is fixed on the housing (1).

3. The oil level thermometer calibration device according to claim 1, characterized in that: Four rods (7) are fixed in a ring on the ring wall of the thermal calibration block (6). The rods (7) are in an "L" shape and are respectively inserted into the four corners of the first mounting plate (3).

4. The oil level thermometer calibration device according to claim 1, characterized in that: The placement mechanism (8) includes: The placement rack (8-1) is located above the box (1). The placement rack (8-1) has an open structure on the front and upper sides. The placement rack (8-1) is fixed to the box (1) by the support legs. A wire groove (8-2) is provided at the bottom of the placement rack (8-1). Two rubber blocks (8-3) are fixed on the inner bottom plate of the placement frame (8-1) and the two rubber blocks (8-3) are respectively located on the left and right sides of the wire trough (8-2). Two rubber blocks (8-4) are provided, and are respectively placed on the left and right sides of the placement rack (8-1). Placement screws (8-5) are provided. There are two placement screws (8-5), which are threadedly connected to the left and right side walls of the placement frame (8-1). The outer end of the placement screw (8-5) is fixed with a second hand screw (8-6), and the inner end of the placement screw (8-5) is fixed with a second rubber block (8-4).

5. The oil level thermometer calibration device according to claim 1, characterized in that: The clamping mechanism (9) includes: Two electric push rods (9-1) are fixed on the top plate of the housing (1). The electric push rods (9-1) are connected to an external power source. The movable end of the electric push rod (9-1) is connected to a connecting rod (9-2), which has a zigzag structure. A retaining ring (9-3) is fixed between two connecting rods (9-2); The second electric push rod (9-4) consists of several units, which are fixed in a ring shape on the inner ring wall of the fixed ring (9-3). The second electric push rod (9-4) is connected to an external power source. The number of rubber blocks No. 3 (9-5) is several, and they are respectively fixed on the movable end of the electric push rod No. 2 (9-4).

6. The oil level thermometer calibration device according to claim 5, characterized in that: The fixing mechanism (10) includes: Rubber block No. 4 (10-1), there are two rubber blocks No. 4 (10-1), and they are respectively set in the fixing groove (1-1). The inner end of the rubber block No. 4 (10-1) is provided with a through hole, and the through hole is connected to the box body (1). The second limiting tube (10-2) consists of two tubes, which are fixed to the front side of the outer wall of the fourth rubber block (10-1). The second limiting rod (10-3) is movably inserted into the second limiting tube (10-2) and is fixed in the fixing groove (1-1). Two fixed internal threaded tubes (10-4) are used, and they are respectively fixed on the rear side of the outer wall of the fourth rubber block (10-1). A fixing screw (10-5) is inserted into the fixed internal threaded tube (10-4) by threaded connection. The fixing screw (10-5) is screwed into the fixing groove (1-1) by bearing. Mounting plate No. 2 (10-6) is fixed in the fixing groove (1-1) and is located above the fixing internal threaded tube (10-4). Mounting plate No. 2 (10-6) is screwed to the left and right sides of the mounting plate No. 2 (10-6) through bearings. The lower end of the rotating shaft No. 1 (10-7) is screwed to the fixing screw (10-5) through a bevel gear pair. The second rotating shaft (10-8) has its two ends screwed into the fixed groove (1-1) by bearings; the second rotating shaft (10-8) is connected to the first rotating shaft (10-7) by a bevel gear pair; and a rotating wheel (10-9) is fixedly fitted in the middle of the second rotating shaft (10-8).

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