A workbench for thermocouple thermal resistance testing
By designing a thermocouple thermoresistance test bench with automatic clamping and efficient heat transfer, the thermocouple testing accuracy and convenience in the prior art are solved, and efficient and safe temperature measurement is achieved.
Patent Information
- Application Number
- CN202411364539.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2044-09-29
AI Technical Summary
The existing thermocouple testing device has the temperature measurement accuracy of the temperature sensor rod is affected by the temperature imbalance of the small container, the fixing method is inconvenient and time-consuming, and it is not portable.
A thermocouple thermoresistance test workbench including non-magnetic metal sleeves, connecting sleeves, supporting columns, clamping components and contact heating components are designed. The clamping components are automatically fixed by air drive, and the contact heating components are passed through The electric heater and the heat conducting disk achieve efficient heat transfer.
It improves the temperature measurement accuracy, reduces the labor intensity and safety risks of operators, and enhances the portability and mobility of the device.
Smart Images
Figure CN118857515B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of temperature testing, in particular to a workbench for testing thermocouple thermal resistors. Background Art
[0002] Thermocouples and thermal resistors are both commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into thermoelectric potential signals, which are then converted into the temperature of the measured medium through electrical instruments.
[0003] Thermocouples and thermal resistors need to undergo parameter testing before leaving the factory to ensure that their temperature measurement accuracy meets standard requirements, thereby reducing the scrap rate of thermocouples when they leave the factory.
[0004] The existing devices for testing thermocouples have the following defects:
[0005] ① The temperature sensing rod of the thermocouple obtains the temperature value based on the temperature rise in the small container. Since the temperature in the small container is unbalanced, the local temperature difference will affect the temperature measurement accuracy.
[0006] ② There is a lack of convenient devices for fixing thermocouples. They are usually fixed manually, which is not only time-consuming and labor-intensive, but also poses a risk of burns from thermocouples.
[0007] ③The whole device is not portable. Summary of the invention
[0008] The purpose of the present invention is to provide a workbench for testing thermocouple and thermal resistance to solve the problems raised in the background technology.
[0009] The above technical objectives of the present invention are achieved through the following technical solutions:
[0010] A workbench for thermocouple thermal resistance testing, comprising:
[0011] The component to be tested is a thermocouple or a thermal resistor, and the component to be tested is composed of a non-magnetic metal sleeve, a temperature-sensing rod capable of detecting temperature, and a connecting sleeve connecting the non-magnetic metal sleeve and the temperature-sensing rod;
[0012] As a supporting column for bearing fixed structure;
[0013] A positioning seat adapted to and passed through the connecting sleeve of the component to be tested;
[0014] An air-driven clamping assembly fixed to the side of the supporting column, after the temperature sensing rod of the component to be tested passes through the clamping assembly from top to bottom, the connecting sleeve of the component to be tested is clamped by the clamping assembly; the positioning seat is fixed to the upper end of the clamping assembly; and
[0015] The contact heating component is fixed on the side of the supporting column. After the connecting sleeve of the component to be tested is clamped by the clamping component, the temperature sensing rod of the component to be tested will contact the contact heating component, and the contact heating component generates heat and transfers the heat to the temperature sensing rod of the component to be tested.
[0016] The further configuration is that: the clamping assembly includes a shell, a displacement zone is provided inside the shell, the upper inner wall and the lower inner wall of the displacement zone are oblique, and the distance between the two gradually increases from left to right; an upper displacement clamp block and a lower displacement clamp block are slidably provided in the displacement zone, and the inner end surfaces of the upper displacement clamp block and the lower displacement clamp block are vertically fixed with guide rods, and the inner side of the shell is provided with guide holes for two guide rods to pass through respectively, and the two guide holes are oblique, and the two guide rods will shift along the setting direction of the corresponding guide holes, so that the upper displacement clamp block and the lower displacement clamp block can be shifted respectively against the upper inner wall and the lower inner wall of the displacement zone; the outer side of the shell is fixed with two external pressure blocks that are pressed on the outer surfaces of the upper displacement clamp block and the lower displacement clamp block respectively by screws;
[0017] The clamping assembly also includes a driving unit that drives the upper displacement clamping block and the lower displacement clamping block to move together; driven by the driving unit, the upper displacement clamping block and the lower displacement clamping block can contact each other to clamp the connecting sleeve of the component to be tested.
[0018] A further configuration is that: an inner contact surface is provided at the lower end of the upper displacement clamp block and the upper end of the lower displacement clamp block, and the two inner contact surfaces can limit the right half of the connecting sleeve of the component to be measured in the displacement area; an inner groove is provided at the lower end of the upper displacement clamp block and the upper end of the lower displacement clamp block, and side pressure anti-slip components are provided in the two inner grooves, and the two side pressure anti-slip components can limit the left half of the connecting sleeve of the component to be measured in the displacement area.
[0019] A further configuration is that: the side-pressure anti-slip component includes a movable pressure block arranged in the inner groove, the inner groove has an opening on one side facing the displacement zone and a groove bottom on the other side, the movable pressure block can partially extend longitudinally out of the inner groove opening, and press on the left half of the connecting sleeve of the component to be tested extending into the displacement zone; a first extrusion spring is arranged between the bottom of the inner groove and the movable pressure block, and the first extrusion spring can drive the movable pressure block to always move toward one side of the displacement zone; a first built-in block is fixedly arranged at the bottom of the inner groove, and the first extrusion spring is sleeved on the outer periphery of the first built-in block, and when the movable pressure block contacts the first built-in block, the movable pressure block will be completely hidden in the inner groove; and through the contact between the first built-in block and the movable pressure block, the first extrusion spring can be prevented from being crushed.
[0020] Further configuration is: embedded blocks are fixedly provided in the upper displacement clamping block and the lower displacement clamping block by screws, the right side of the embedded block has an extension section extending into the opening of the inner groove, the left side of the movable pressure block is fixedly provided with a movable section, the positions of the movable section and the extension section correspond to each other and the two can limit the movable pressure block by contact; a hollow area is provided on the side of the movable section facing the extension section, the hollow area is communicated with the left inner wall of the inner groove, a first inner channel communicated with the hollow area is provided inside the embedded block, and a first access tube communicated with the first inner channel is fixedly provided on the outer surface of the embedded block.
[0021] A further configuration is that a heat insulating layer is provided in the area where the movable pressing block contacts the connecting sleeve of the element to be tested extending into the displacement area, and the heat insulating layer is made of a heat insulating material; and the inner contact surfaces of the upper displacement clamping block and the lower displacement clamping block are both made of a heat insulating material.
[0022] Further configuration is that: the driving unit comprises a horizontal axis, a side end plate is fixedly arranged at the left end of the horizontal axis; an upper baffle plate and a lower baffle plate are fixedly arranged at the lower end of the upper displacement clamp block and the upper end of the lower displacement clamp block respectively, and there is a spacing space for placing the side end plate between the upper baffle plate and the upper displacement clamp block, and between the lower baffle plate and the lower displacement clamp block;
[0023] A connecting inner seat is fixedly provided on the right side of the shell, a connecting inner cavity is provided in the connecting inner seat, and the transverse axis extends into the connecting inner cavity; a left block and a right block are fixedly provided on the left and right sides of the connecting inner cavity, respectively, and an auxiliary moving block located between the left block and the right block is fixedly provided on the upper end of the transverse axis by screws, and the auxiliary moving block can contact the left block and the right block respectively to limit the position; a second extrusion spring is provided between the auxiliary moving block and the right block, and the second extrusion spring can drive the transverse axis to always move to the left;
[0024] The right side of the left blocking block and the left side of the auxiliary moving block are both provided with inner concave surfaces, an inner concave cavity is formed between the two inner concave surfaces, a second inner channel is provided in the connecting inner seat, and a second access pipe communicating with the second inner channel is fixedly provided on the outer surface of the connecting inner seat;
[0025] The first access pipe and the second access pipe are both led out through pipelines to be connected to the same air electric pump.
[0026] Further configuration is: a second built-in block is fixedly arranged on the right inner wall of the displacement zone, and when the second built-in block contacts the upper displacement clamping block and the lower displacement clamping block, a space is provided between the auxiliary displacement block and the right blocking block to prevent the second extrusion spring from being crushed;
[0027] The shell and the second built-in block are both provided with through holes for the transverse axis to pass through.
[0028] Further configuration is: the contact heating component includes a metal heat conducting plate with heat conducting properties, the metal heat conducting plate is fixed to the side of the supporting column; the surface of the metal heat conducting plate is paved with an electric heating sheet, and the electric heating sheet is equipped with a temperature sensor;
[0029] The surface of the metal heat-conducting plate is regularly provided with three groups of contact heat-conducting units, and the distance between any two adjacent groups of contact heat-conducting units is equal; the metal heat-conducting plate is provided with a through circular inner through hole; each group of contact heat-conducting units includes a fixing seat, on which a contact heat-conducting rod is fixedly provided, the contact heat-conducting rod is arranged toward the center of the inner through hole, and a limiting block is fixedly provided at the end of the contact heat-conducting rod facing the center of the inner through hole, the limiting block has a limiting groove, and a rolling ball is rotatably provided in the limiting groove;
[0030] The rolling balls in the three groups of contact heat conduction units form an enclosing cavity for the temperature sensing rod of the component to be tested to pass through, and the three rolling balls can all contact the temperature sensing rod of the component to be tested;
[0031] The fixing seat, the contact heat-conducting rod, the limiting block and the rolling ball are all made of heat-conducting materials.
[0032] The present invention has the following beneficial effects:
[0033] 1. In the present invention, the contact heating component can contact the temperature sensing rod of the component to be measured, and transfer the generated heat to the temperature sensing rod of the component to be measured through heat transfer, thereby improving the temperature measurement accuracy through direct contact; the clamping component can conveniently clamp the connecting sleeve of the component to be measured, and the clamping component is driven by air, without the operator manually fixing the component to be measured, which is more labor-saving and safer; the entire workbench is small in size, has no restrictions on placement, and can be easily carried and moved.
[0034] 2. In the present invention, the guide rod is located in the guide hole and moves. Since the guide hole is inclined, the guide rod will move obliquely, thereby driving the upper displacement clamp and the lower displacement clamp to move along the oblique upper inner wall and lower inner wall in the displacement area respectively. The structure is reasonable and can drive the upper displacement clamp and the lower displacement clamp to move closer to and away from each other; after the upper displacement clamp and the lower displacement clamp are close to and in contact with each other, they can clamp the connecting sleeve of the component to be tested; the driving unit provides power for the upper displacement clamp and the lower displacement clamp to move together.
[0035] 3. In the present invention, after the connecting sleeve of the element to be tested extends into the displacement area, the lower end of the upper displacement clamp and the inner contact surface on the lower displacement clamp can limit the right half of the connecting sleeve of the element to be tested, and the two side pressure anti-detachment components can limit the left half of the connecting sleeve of the element to be tested, thereby realizing the overall limitation of the connecting sleeve.
[0036] 4. In the present invention, the movable pressure block in the side pressure anti-slip component will be pressed on the left half of the connecting sleeve of the element to be tested under the drive of the first extrusion spring; the setting of the first built-in block can contact the movable pressure block in advance to avoid the first extrusion spring from being crushed.
[0037] 5. In the present invention, the expansion section can contact with the movable section to prevent the movable pressure block from escaping from the inner groove; the hollow area of the movable section can maintain its own existence when the expansion section contacts the movable section, so as to stably receive the air blown in from the first access pipe; after the air enters the hollow area, it can drive the movable pressure block to move upward, thereby hiding the movable pressure block in the inner groove, which is convenient for the subsequent disassembly of the component to be tested.
[0038] 6. The provision of the heat insulating layer in the present invention can prevent the temperature from being transferred to the shell, thus avoiding burns caused by high temperature.
[0039] 7. In the present invention, the horizontal axis in the driving unit serves as a moving carrier, and the second extrusion spring can act on the auxiliary moving block to push the horizontal axis to move left, thereby driving the upper displacement clamp block and the lower displacement clamp block to maintain a stable clamping state of the connecting sleeve of the component to be measured; the setting of the inner concave cavity can maintain its own existence when the left blocking block and the auxiliary moving block are in contact, so as to stably receive the air blown in from the second access pipe; after the air enters the inner concave cavity, it can drive the horizontal axis to move right, thereby separating the upper displacement clamp block and the lower displacement clamp block, which is convenient for the subsequent disassembly of the component to be measured.
[0040] 8. In the present invention, an air electric pump can blow air into the first access tube and the second access tube at the same time. The air can not only be blown into the hollow area to release the two movable pressure blocks from limiting the left half of the connecting sleeve of the component to be measured; the air can also be blown into the inner concave cavity to release the upper displacement clamping block and the lower displacement clamping block from limiting the right half of the connecting sleeve of the component to be measured; only one air electric pump is needed to drive multiple actions, saving resources.
[0041] 9. The second built-in block in the present invention can be arranged to contact the upper displacement clamping block and the lower displacement clamping block in advance to prevent the second extrusion spring from being crushed.
[0042] 10. In the present invention, the electric heater heats the metal heat-conducting plate, and the metal heat-conducting plate transfers heat to the three balls. The three balls contact the temperature-sensitive rod of the component to be tested, and then the heat is transferred to the temperature-sensitive rod of the component to be tested, thereby achieving heat transfer after direct contact, and the heat transfer efficiency is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Figure 1 It is a structural schematic diagram of an embodiment;
[0044] Figure 2 is an internal cross-sectional view of a clamping assembly in an embodiment;
[0045] Figure 3 A schematic diagram of the back structure of the clamping assembly in the embodiment;
[0046] Figure 4 for Figure 2 Enlarged view of part A in the middle;
[0047] Figure 5 for Figure 2 Enlarged view of middle part B;
[0048] Figure 6 Schematic diagram of the structure of the contact heating component in the embodiment.
[0049] In the figure: 1, the element to be tested; 11, the non-magnetic metal sleeve; 12, the connecting sleeve; 13, the temperature sensing rod; 21, the supporting column; 22, the positioning seat; 31, the shell; 32, the displacement area; 33, the upper displacement clamp; 331, the inner contact surface; 34, the lower displacement clamp; 35, the guide rod; 36, the guide hole; 37, the outer pressure block; 41, the inner groove; 42, the movable pressure block; 421, the movable section; 422, the heat insulation layer; 43, the first extrusion spring; 44, the first built-in block; 45, the embedded block; 451, the expansion section; 51, the hollow area; 52, the first inner channel; 53, the first connection Inlet pipe; 61, horizontal axis; 62, side end plate; 631, upper baffle; 632, lower baffle; 71, connecting inner seat; 72, connecting inner cavity; 73, left resistance block; 74, right resistance block; 75, auxiliary shift block; 76, second extrusion spring; 77, second built-in block; 81, inner concave cavity; 82, second inner channel; 83, second access pipe; 84, air pump; 91, metal heat conducting plate; 92, electric heating plate; 93, temperature sensor; 94, inner perforation; 95, fixed seat; 96, contact heat conducting rod; 97, limit block; 971, limit groove; 98, rolling ball; 99, surrounding cavity. DETAILED DESCRIPTION
[0050] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0051] As attached Figures 1 to 6 As shown;
[0052] This embodiment discloses a workbench for thermocouple thermal resistance testing, including:
[0053] The component to be tested 1 is a thermocouple or a thermal resistor, and the component to be tested 1 is composed of a non-magnetic metal sleeve 11, a temperature-sensing rod 13 capable of detecting temperature, and a connecting sleeve 12 connecting the non-magnetic metal sleeve 11 and the temperature-sensing rod 13;
[0054] Support columns 21 as a bearing fixed structure;
[0055] A positioning seat 22 adapted to and passed through the connecting sleeve 12 of the element under test 1;
[0056] An air-driven clamping assembly is fixed to the side of the support column 21. After the temperature sensing rod 13 of the component to be tested 1 passes through the clamping assembly from top to bottom, the connecting sleeve 12 of the component to be tested 1 is clamped by the clamping assembly; the positioning seat 22 is fixed to the upper end of the clamping assembly; and
[0057] The contact heating component is fixed on the side of the supporting column 21. After the connecting sleeve 12 of the element to be tested 1 is clamped by the clamping component, the temperature sensing rod 13 of the element to be tested 1 will contact the contact heating component, and the contact heating component generates heat and transfers the heat to the temperature sensing rod 13 of the element to be tested 1.
[0058] The clamping assembly includes a shell 31, a displacement area 32 is provided inside the shell 31, the upper inner wall and the lower inner wall of the displacement area 32 are oblique, and the distance between the two gradually increases from left to right; an upper displacement clamp 33 and a lower displacement clamp 34 are slidably provided in the displacement area 32, and the inner end surfaces of the upper displacement clamp 33 and the lower displacement clamp 34 are vertically fixed with guide rods 35, and the inner side of the shell 31 is provided with guide holes 36 for the two guide rods 35 to pass through respectively, and the two guide holes 36 are oblique, and the two guide rods 35 will shift along the setting direction of the corresponding guide holes 36, so that the upper displacement clamp 33 and the lower displacement clamp 34 can be shifted respectively against the upper inner wall and the lower inner wall of the displacement area 32; the outer side of the shell 31 is fixed with two external pressure blocks 37 that press on the outer surfaces of the upper displacement clamp 33 and the lower displacement clamp 34 respectively by screws;
[0059] The clamping assembly also includes a driving unit that drives the upper displacement clamping block 33 and the lower displacement clamping block 34 to move together; driven by the driving unit, the upper displacement clamping block 33 and the lower displacement clamping block 34 can contact each other to clamp the connecting sleeve 12 of the component to be tested 1.
[0060] Among them, the lower end of the upper displacement clamp 33 and the upper end of the lower displacement clamp 34 are both provided with an inner contact surface 331, and the two inner contact surfaces 331 can limit the right half of the connecting sleeve 12 of the component to be tested 1 in the displacement area 32; the lower end of the upper displacement clamp 33 and the upper end of the lower displacement clamp 34 are both provided with an inner groove 41, and the two inner grooves 41 are both provided with side pressure anti-slip components, and the two side pressure anti-slip components can limit the left half of the connecting sleeve 12 of the component to be tested 1 in the displacement area 32.
[0061] Among them, the side pressure anti-slip component includes a movable pressure block 42 arranged in the inner groove 41, the inner groove 41 has an opening on one side facing the displacement area 32 and a groove bottom on the other side, the movable pressure block 42 can partially extend longitudinally from the opening of the inner groove 41, and press on the left half of the connecting sleeve 12 of the element to be tested 1 extending into the displacement area 32; a first extrusion spring 43 is arranged between the bottom of the inner groove 41 and the movable pressure block 42, the first extrusion spring 43 can drive the movable pressure block 42 to always move toward one side of the displacement area 32; a first built-in block 44 is fixedly arranged at the bottom of the inner groove 41, the first extrusion spring 43 is sleeved on the outer periphery of the first built-in block 44, when the movable pressure block 42 contacts the first built-in block 44, the movable pressure block 42 will be completely hidden in the inner groove 41; and through the contact between the first built-in block 44 and the movable pressure block 42, the first extrusion spring 43 can be prevented from being crushed.
[0062] Among them, an embedded block 45 is fixedly provided in the upper displacement clamping block 33 and the lower displacement clamping block 34 by screws, and the right side of the embedded block 45 has an extension section 451 extending into the opening of the inner groove 41, and the left side of the movable pressure block 42 is fixedly provided with a movable section 421, and the positions of the movable section 421 and the extension section 451 correspond to each other, and the two can limit the movable pressure block 42 by contact; the movable section 421 is provided with a hollow area 51 on the side facing the extension section 451, and the hollow area 51 is communicated with the left inner wall of the inner groove 41, and a first inner channel 52 communicated with the hollow area 51 is provided inside the embedded block 45, and a first access pipe 53 communicated with the first inner channel 52 is fixedly provided on the outer surface of the embedded block 45.
[0063] Among them, the area where the movable pressing block 42 contacts the connecting sleeve 12 of the element to be tested 1 extending into the displacement area 32 is provided with an insulation layer 422, and the insulation layer 422 is made of insulation material; the inner contact surfaces 331 of the upper displacement clamp 33 and the lower displacement clamp 34 are both made of insulation material.
[0064] The driving unit includes a horizontal shaft 61, and a side end plate 62 is fixedly arranged at the left end of the horizontal shaft 61; an upper baffle plate 631 and a lower baffle plate 632 are fixedly arranged at the lower end of the upper displacement clamping block 33 and the upper end of the lower displacement clamping block 34, respectively, and there is a spacing space for placing the side end plate 62 between the upper baffle plate 631 and the upper displacement clamping block 33, and between the lower baffle plate 632 and the lower displacement clamping block 34;
[0065] A connecting inner seat 71 is fixedly provided on the right side of the shell 31, and a connecting inner cavity 72 is opened in the connecting inner seat 71, and the horizontal axis 61 extends into the connecting inner cavity 72; a left block 73 and a right block 74 are fixedly provided on the left and right sides of the connecting inner cavity 72, respectively, and an auxiliary moving block 75 located between the left block 73 and the right block 74 is fixedly provided on the upper end of the horizontal axis 61 by screws, and the auxiliary moving block 75 can contact the left block 73 and the right block 74 respectively to limit the position; a second extrusion spring 76 is provided between the auxiliary moving block 75 and the right block 74, and the second extrusion spring 76 can drive the horizontal axis 61 to always move to the left;
[0066] The right side of the left blocking block 73 and the left side of the auxiliary moving block 75 are both provided with inner concave surfaces, and an inner concave cavity 81 is formed between the two inner concave surfaces. A second inner channel 82 is provided in the connecting inner seat 71, and a second access pipe 83 communicating with the second inner channel 82 is fixedly provided on the outer surface of the connecting inner seat 71;
[0067] The first access pipe 53 and the second access pipe 83 are both led out through pipelines to connect to the same air electric pump 84 .
[0068] Among them, a second built-in block 77 is fixedly provided on the right inner wall of the displacement area 32. When the second built-in block 77 contacts the upper displacement clamping block 33 and the lower displacement clamping block 34, there is a space between the auxiliary displacement block 75 and the right blocking block 74 to prevent the second extrusion spring 76 from being crushed;
[0069] The housing 31 and the second built-in block 77 are both provided with through holes for the transverse shaft 61 to pass through.
[0070] The contact heating component includes a metal heat conducting plate 91 with heat conducting properties, and the metal heat conducting plate 91 is made of copper. The metal heat conducting plate 91 is fixed to the side of the supporting column 21. The surface of the metal heat conducting plate 91 is paved with an electric heating sheet 92, and the electric heating sheet 92 is provided with a temperature sensor 93. The temperature sensor 93 is a mature product and can be directly purchased from the market.
[0071] The surface of the metal heat-conducting plate 91 is regularly provided with three groups of contact heat-conducting units, and the distance between any two adjacent groups of contact heat-conducting units is equal; a through circular inner through hole 94 is provided in the metal heat-conducting plate 91; each group of contact heat-conducting units includes a fixing seat 95, on which a contact heat-conducting rod 96 is fixedly provided, and the contact heat-conducting rod 96 is arranged toward the center of the inner through hole 94, and a limiting block 97 is fixedly provided at the end of the contact heat-conducting rod 96 toward the center of the inner through hole 94, and the limiting block 97 has a limiting groove 971, and a rolling ball 98 is rotatably provided in the limiting groove 971;
[0072] The rolling balls 98 in the three groups of contact heat conduction units form a surrounding cavity 99 for the temperature sensing rod 13 of the component to be tested 1 to pass through, and the three rolling balls 98 can all contact with the temperature sensing rod 13 of the component to be tested 1;
[0073] The fixing seat 95, the contact heat-conducting rod 96, the limiting block 97 and the rolling ball 98 are all made of heat-conducting materials; in this embodiment, they are made of copper.
[0074] The working principle of this embodiment is:
[0075] ① When testing the component to be tested 1, turn on the air pump 84; the air generated by the air pump 84 will be blown into the hollow area 51 through the first access tube 53 and the first inner channel 52. After the air enters the hollow area 51, it can drive the movable pressure block 42 to move upward, thereby hiding the movable pressure block 42 in the inner groove 41; the air generated by the air pump 84 will also be blown into the inner concave cavity 81 through the second access tube 83 and the second inner channel 82. After the air enters the inner concave cavity 81, it can drive the horizontal axis 61 to move rightward, thereby separating the upper displacement clamp 33 and the lower displacement clamp 34, making it convenient for the connecting sleeve 12 of the component to be tested 1 to penetrate into the displacement area 32.
[0076] ② Insert the connecting sleeve 12 of the component under test 1 into the positioning seat 22, and then the connecting sleeve 12 of the component under test 1 will be inserted into the displacement area 32, and stop when the non-magnetic metal sleeve 11 of the component under test 1 touches the positioning seat 22; at this time, the temperature sensing rod 13 of the component under test 1 will contact the ball 98, and smoothly penetrate into the surrounding cavity 99 as the ball 98 rotates.
[0077] ③ Turn off the air pump 84, the upper displacement clamp 33 and the lower displacement clamp 34 will move to the left under the push of the second extrusion spring 76, and the inner contact surfaces 331 of the upper displacement clamp 33 and the lower displacement clamp 34 can limit the right half of the connecting sleeve 12 of the component to be tested 1; the movable pressing blocks 42 in the two side pressure anti-detachment components will be pressed on the left half of the connecting sleeve 12 of the component to be tested 1 under the drive of the first extrusion spring 43; thereby achieving the overall limitation of the connecting sleeve 12.
[0078] ④ The electric heater 92 is powered and works. The electric heater 92 heats the metal heat-conducting plate 91, and the metal heat-conducting plate 91 transfers heat to the three balls 98. The three balls 98 contact the temperature-sensing rod 13 of the component to be tested 1. Then the heat is transferred to the temperature-sensing rod 13 of the component to be tested 1, realizing heat transfer after direct contact, and the heat transfer efficiency is better.
[0079] ⑤ Compare and analyze the temperature value detected by the temperature sensor 93 and the temperature value detected by the component under test 1 to obtain the test result of the component under test 1.
[0080] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. A workbench for thermocouple thermal resistance testing, characterized in that: Included are: The component to be measured (1) is a thermocouple or a thermal resistor, and the component to be measured (1) is composed of a non-magnetic metal sleeve (11), a temperature-sensing rod (13) capable of detecting temperature, and a connecting sleeve (12) connecting the non-magnetic metal sleeve (11) and the temperature-sensing rod (13); As a supporting column (21) for bearing the fixed structure; A positioning seat (22) adapted to and passed through the connecting sleeve (12) of the component to be tested (1); An air-driven clamping assembly is fixed to the side of the supporting column (21); after the temperature sensing rod (13) of the component to be tested (1) passes through the clamping assembly from top to bottom, the connecting sleeve (12) of the component to be tested (1) is clamped by the clamping assembly; the positioning seat (22) is fixed to the upper end of the clamping assembly; as well as A contact heating component is fixed on the side of the support column (21), after the connecting sleeve (12) of the element to be tested (1) is clamped by the clamping component, the temperature sensing rod (13) of the element to be tested (1) will contact the contact heating component, and the contact heating component generates heat and transfers the heat to the temperature sensing rod (13) of the element to be tested (1); The clamping assembly comprises a shell (31), a displacement area (32) is provided inside the shell (31), the upper inner wall and the lower inner wall of the displacement area (32) are inclined, and the distance between the two gradually increases from left to right; an upper displacement clamping block (33) and a lower displacement clamping block (34) are slidably arranged in the displacement area (32), and the inner side end surfaces of the upper displacement clamping block (33) and the lower displacement clamping block (34) are vertically fixedly provided with a guide rod (35), and the inner side of the shell (31) is provided with a plurality of guide rods (35) for respectively The guide holes (36) through which the two guide rods (35) pass are both oblique, and the two guide rods (35) are displaced along the setting direction of the corresponding guide holes (36), so that the upper displacement clamp (33) and the lower displacement clamp (34) can be displaced along the upper inner wall and the lower inner wall of the displacement area (32) respectively; the outer side of the shell (31) is fixed with two external pressure blocks (37) respectively pressed on the outer surfaces of the upper displacement clamp (33) and the lower displacement clamp (34); The clamping assembly further comprises a driving unit for driving the upper displacement clamping block (33) and the lower displacement clamping block (34) to move together; driven by the driving unit, the upper displacement clamping block (33) and the lower displacement clamping block (34) can contact each other to clamp the connecting sleeve (12) of the component to be tested (1).
2. A workbench for thermocouple thermal resistance testing according to claim 1, characterized in that: The lower end of the upper displacement clamp (33) and the upper end of the lower displacement clamp (34) are both provided with inner contact surfaces (331), and the two inner contact surfaces (331) can limit the right half of the connecting sleeve (12) of the component to be measured (1) in the displacement zone (32); the lower end of the upper displacement clamp (33) and the upper end of the lower displacement clamp (34) are both provided with inner grooves (41), and the two inner grooves (41) are both provided with side pressure anti-slip components, and the two side pressure anti-slip components can limit the left half of the connecting sleeve (12) of the component to be measured (1) in the displacement zone (32).
3. A workbench for thermocouple thermal resistance testing according to claim 2, characterized in that: The side pressure anti-slip component includes a movable pressure block (42) arranged in the inner groove (41), the inner groove (41) has an opening on one side facing the displacement area (32) and a groove bottom on the other side, the movable pressure block (42) can partially extend longitudinally out of the opening of the inner groove (41) and press on the left half of the connecting sleeve (12) of the element to be tested (1) extending into the displacement area (32); a first extrusion spring (43) is arranged between the groove bottom of the inner groove (41) and the movable pressure block (42), the first extrusion spring (43) 3) The movable pressure block (42) can be driven to always move toward one side of the displacement zone (32); a first built-in block (44) is fixedly arranged at the bottom of the inner groove (41); the first extrusion spring (43) is sleeved on the outer periphery of the first built-in block (44); when the movable pressure block (42) contacts the first built-in block (44), the movable pressure block (42) will be completely hidden in the inner groove (41); and through the contact between the first built-in block (44) and the movable pressure block (42), the first extrusion spring (43) can be prevented from being crushed.
4. A workbench for thermocouple thermal resistance testing according to claim 3, characterized in that: An embedding block (45) is fixedly provided in the upper displacement clamping block (33) and the lower displacement clamping block (34) by means of screws. The right side of the embedding block (45) has an extension section (451) extending into the opening of the inner groove (41). The left side of the movable pressing block (42) is fixedly provided with an active section (421). The positions of the active section (421) and the extension section (451) correspond to each other and the two can limit the movable pressing block (42) by contact. The movable section (421) is provided with a hollow area (51) on the side facing the extension section (451). The hollow area (51) is communicated with the left inner wall of the inner groove (41). The embedding block (45) is provided with a first inner channel (52) communicated with the hollow area (51). The outer surface of the embedding block (45) is fixedly provided with a first access tube (53) communicated with the first inner channel (52).
5. A workbench for thermocouple thermal resistance testing according to claim 4, characterized in that: A heat insulating layer (422) is provided in the area where the movable pressing block (42) contacts the connecting sleeve (12) of the component to be tested (1) extending into the displacement area (32); the heat insulating layer (422) is made of a heat insulating material; and the inner contact surfaces (331) of the upper displacement clamping block (33) and the lower displacement clamping block (34) are both made of a heat insulating material.
6. A workbench for thermocouple thermal resistance testing according to claim 4, characterized in that: The driving unit comprises a transverse axis (61), and a side end plate (62) is fixedly arranged at the left end of the transverse axis (61); an upper baffle plate (631) and a lower baffle plate (632) are fixedly arranged at the lower end of the upper displacement clamping block (33) and the upper end of the lower displacement clamping block (34), respectively; and there is a spacing space for placing the side end plate (62) between the upper baffle plate (631) and the upper displacement clamping block (33), and between the lower baffle plate (632) and the lower displacement clamping block (34); A connecting inner seat (71) is fixedly provided on the right side of the shell (31), a connecting inner cavity (72) is provided in the connecting inner seat (71), and the transverse axis (61) extends into the connecting inner cavity (72); a left block (73) and a right block (74) are fixedly provided on the left and right sides of the connecting inner cavity (72), respectively; an auxiliary moving block (75) located between the left block (73) and the right block (74) is fixedly provided on the upper end of the transverse axis (61) by screws, and the auxiliary moving block (75) can contact the left block (73) and the right block (74) to limit the position; a second extrusion spring (76) is provided between the auxiliary moving block (75) and the right block (74), and the second extrusion spring (76) can drive the transverse axis (61) to always move to the left; The right side of the left blocking block (73) and the left side of the auxiliary moving block (75) are both provided with inner concave surfaces, an inner concave cavity (81) is formed between the two inner concave surfaces, a second inner channel (82) is provided in the connecting inner seat (71), and a second access pipe (83) communicating with the second inner channel (82) is fixedly provided on the outer surface of the connecting inner seat (71); The first access pipe (53) and the second access pipe (83) are both led out through pipelines to connect to the same air electric pump (84).
7. A workbench for thermocouple thermal resistance testing according to claim 6, characterized in that: A second built-in block (77) is fixedly provided on the right inner wall of the displacement zone (32); when the second built-in block (77) contacts the upper displacement clamping block (33) and the lower displacement clamping block (34), a space is provided between the auxiliary displacement block (75) and the right blocking block (74) to prevent the second extrusion spring (76) from being crushed; The housing (31) and the second built-in block (77) are both provided with through holes for the transverse axis (61) to pass through.
8. A workbench for thermocouple thermal resistance testing according to claim 1, characterized in that: The contact heating component comprises a metal heat conducting plate (91) with heat conducting properties, and the metal heat conducting plate (91) is fixed on the side of the supporting column (21); the surface of the metal heat conducting plate (91) is provided with an electric heating plate (92), and the electric heating plate (92) is provided with a temperature sensor (93); The surface of the metal heat-conducting plate (91) is regularly provided with three groups of contact heat-conducting units, and the distance between any two adjacent groups of contact heat-conducting units is equal; the metal heat-conducting plate (91) is provided with a through circular inner through hole (94); each group of contact heat-conducting units comprises a fixing seat (95), a contact heat-conducting rod (96) is fixedly provided on the fixing seat (95), the contact heat-conducting rod (96) is arranged toward the center of the inner through hole (94), a limiting block (97) is fixedly provided at the end of the contact heat-conducting rod (96) facing the center of the inner through hole (94), the limiting block (97) has a limiting groove (971), and a rolling ball (98) is rotatably provided in the limiting groove (971); An enclosing cavity (99) is formed between the rolling balls (98) in the three groups of contact heat conduction units for the temperature sensing rod (13) of the component to be tested (1) to pass through, and the three rolling balls (98) can all contact the temperature sensing rod (13) of the component to be tested (1); The fixing seat (95), the contact heat-conducting rod (96), the limiting block (97) and the rolling ball (98) are all made of heat-conducting material.
Citation Information
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