CN211824828U

CN211824828U - Medium-high temperature step initial moment measuring system

Info

Publication number: CN211824828U
Application number: CN202020771135.9U
Authority: CN
Inventors: 刘波; 何永兴; 邹冰妍; 龚宝妹
Original assignee: Shanghai Institute of Measurement and Testing Technology
Current assignee: Shanghai Institute of Measurement and Testing Technology
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2020-10-30
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a middle and high temperature step initial moment measuring system, including constant temperature environment, temperature sensor actuating mechanism, record appearance, temperature sensor, first wire, second wire, low-voltage steady voltage source, basin and conducting rod, establish ties on the first wire and install low-voltage steady voltage source, one end submergence of first wire is to in the basin, one end and the conducting rod of second wire are connected, the other end of first wire and the other end of second wire are connected to the first passageway on the record appearance jointly, temperature sensor passes through the wire and is connected with the second passageway on the record appearance; the utility model discloses in temperature sensor dynamic response calibration field, when producing medium and high temperature step temperature environment by constant temperature oil groove or constant temperature furnace, the utility model discloses based on simple effectual electrical parameter method, can accurately measure the initial moment of temperature step.

Description

Medium-high temperature step initial moment measuring system

Technical Field

The utility model belongs to the technical field of temperature sensor dynamic response calibration, concretely relates to initial moment measurement system of well high temperature step.

Background

When the contact temperature sensor measures the fluid temperature with rapid temperature change, the temperature to be measured cannot be immediately reflected, and a certain time is required for reaching a thermal equilibrium state. The value of the temperature of the sensor reaction is the temperature of the fluid being measured only when the temperature sensor is in thermal equilibrium with the fluid being measured. The dynamic response characteristic of the sensor refers to the relationship between the temperature of the temperature sensor and the temperature increment of the measured medium. In actual calibration, the response of a temperature sensor to a step temperature is often described in terms of thermal response time. The thermal response time is the time required for the output temperature of the temperature sensor to change to a specified percentage of the fluid temperature step amount when the fluid temperature changes in a step manner, and the time required for the output temperature to reach 63.2% of the step temperature amount is referred to as a time constant.

The temperature sensor dynamic response calibration, namely the sensor thermal response time calibration process, mainly comprises: generating stable calibration conditions (stable speed field and temperature field); subjecting the temperature sensor to a temperature step excitation; and collecting the response signal of the calibrated sensor to the step by the test system, and calculating the thermal response time. The temperature step is usually generated by inserting the temperature sensor into the set temperature measurement environment with a fast mechanical movement at a stable initial temperature and by taking the time at which the temperature of the calibrated temperature sensor starts to rise as the initial time of the temperature step. However, this definition ignores the effect of the temperature step generation process on the heat transfer of the temperature sensor.

The constant-temperature constant-speed water tank can only generate a temperature environment below 100 ℃, and when the water temperature is higher than 80 ℃, local boiling exists in a heating area, and the generated bubbles increase the measurement error of the thermal response time. When the required temperature step is large, a constant temperature oil tank or a constant temperature furnace can be adopted to generate a step temperature environment. But the initial moment of the temperature step is difficult to measure with a simple and efficient electrical parameter method.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well high temperature step initial moment measurement system to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the system comprises a constant temperature environment, a temperature sensor driving mechanism, a recorder, a temperature sensor, a first lead, a second lead, a low-voltage stabilizing source, a water tank and a conducting rod, wherein the low-voltage stabilizing source is installed on the first lead in series, one end of the first lead is immersed into the water tank, one end of the second lead is connected with the conducting rod, the other end of the first lead and the other end of the second lead are connected to a first channel on the recorder together, and the temperature sensor is connected with a second channel on the recorder through the leads.

Preferably, temperature sensor actuating mechanism installs on ball nut seat, and ball nut seat suit is on ball, and ball transversely installs on the support frame, and the hand wheel is installed to ball one end, temperature sensor actuating mechanism comprises motor, gear, hold-in range and synchronous seat, and the power output shaft and the gear connection of motor, gear and hold-in range meshing, and synchronous seat are fixed on the hold-in range, temperature sensor installs the one side at synchronous seat, and synchronous seat's opposite side is provided with the conducting rod, the basin sets up in the below of conducting rod, the constant temperature environment sets up to the constant temperature oil groove, and the constant temperature oil groove sets up in temperature sensor's below.

Preferably, temperature sensor actuating mechanism comprises impact cylinder, air supply, connecting rod, fine rule and fixed pulley, temperature sensor fixes on the piston rod of impacting the cylinder, and the air supply is connected with the impact cylinder, and the connecting rod is fixed on the piston rod, and the bottom of connecting rod is connected with the fine rule, and the fine rule passes the fixed pulley and is connected with the conducting rod, constant temperature environment sets up to the constant temperature stove, and the constant temperature stove sets up in one side of temperature sensor.

Preferably, the voltage of the low-voltage regulator is 5V.

Compared with the prior art, the beneficial effects of the utility model are that: in temperature sensor dynamic response calibration field, when producing the medium and high temperature step temperature environment by constant temperature oil groove or constant temperature furnace, the utility model discloses based on simple effectual electrical parameter method, can accurately measure the initial moment of temperature step.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic diagram of a preparation state of a measurement system at an initial moment of a high temperature step in embodiment 1 of the present invention;

fig. 2 is a schematic view of the termination state of the measurement system at the initial moment of the high temperature step in embodiment 1 of the present invention;

fig. 3 is a schematic diagram of a trigger state of the measurement system at the initial moment of the high temperature step in embodiment 2 of the present invention.

In the figure: 1. a constant temperature oil tank; 2. a support frame; 4. a recorder; 5. a temperature sensor; 21. a ball nut seat; 22. a ball screw; 23. a hand wheel; 31. an electric motor; 32. a gear; 33. a synchronous belt; 34. a synchronization seat; 41. a first conductive line; 42. a second conductive line; 43. a low voltage regulated power supply; 44. a first channel; 45. a second channel; 46. a water tank; 47. a conductive rod; 6. a constant temperature furnace; 7. an impact cylinder; 8. a fixed pulley; 71. a piston rod; 73. a gas source; 74. a connecting rod; 75. a thin wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Embodiment 1, please refer to fig. 1-2, the present invention provides a technical solution: a middle-high temperature step initial time measuring system comprises a constant temperature environment, a temperature sensor driving mechanism, a recorder 4, a temperature sensor 5, a first lead 41, a second lead 42, a low-voltage regulator 43, a water tank 46 and a conducting rod 47, wherein the low-voltage regulator 43 is installed on the first lead 41 in series, one end of the first lead 41 is immersed into the water tank 46, one end of the second lead 42 is connected with the conducting rod 47, the other end of the first lead 41 and the other end of the second lead 42 are connected to a first channel 44 on the recorder 4 together, the temperature sensor 5 is connected with a second channel 45 on the recorder 4 through leads, the temperature sensor driving mechanism is installed on a ball nut seat 21, the ball nut seat 21 is sleeved on a ball screw 22, the ball screw 22 is transversely installed on a support frame 2, one end of the ball screw 22 is provided with a hand wheel 23, and the temperature sensor driving mechanism is formed by a motor 31, Gear 32, hold-in range 33 and synchronous seat 34 constitute, and motor 31's power output shaft is connected with gear 32, and gear 32 and hold-in range 33 mesh, and synchronous seat 34 are fixed on hold-in range 33, and temperature sensor 5 installs the one side at synchronous seat 34, and the opposite side of synchronous seat 34 is provided with conducting rod 47, and basin 46 sets up in the below of conducting rod 47, and the constant temperature environment sets up to constant temperature oil groove 1, and constant temperature oil groove 1 sets up in temperature sensor 5's below.

In this embodiment, the voltage of the low voltage regulator 43 is preferably 5V.

The utility model discloses a theory of operation and use flow: firstly, the installation length of the conducting rod 47 is adjusted, when the temperature sensor 5 is contacted with the liquid level of the constant temperature oil groove 1, the conducting rod 47 is ensured to be contacted with the water surface of the water groove 46, the temperature sensor 5 can be inserted into the constant temperature oil groove 1 at different speeds by adjusting the rotating speed of the motor 31, before the measurement is started, the water groove 46 is stood for not less than 10min so that the water surface is static and has no fluctuation, when the conducting rod 47 is contacted with the water surface of the water groove 46, the first lead 41 is communicated with the second lead 42 to form a pulse level, the moment when the pulse level is collected by the first channel 44 of the recorder 4 is the initial moment of the temperature step, the second channel 45 of the recorder 4 can continuously collect the signal of the temperature sensor 5 and can also be triggered by the pulse level to collect the signal of the temperature sensor 5, the hand-cranking hand wheel 23 drives the ball screw 22 to rotate, and can drive the ball nut seat, and then the position of the temperature sensor driving mechanism can be adjusted.

Embodiment 2, please refer to fig. 3, the present invention provides a technical solution: a middle-high temperature step initial time measuring system comprises a constant temperature environment, a temperature sensor driving mechanism, a recorder 4, a temperature sensor 5, a first lead wire 41, a second lead wire 42, a low-voltage regulator 43, a water tank 46 and a conducting rod 47, wherein the low-voltage regulator 43 is installed on the first lead wire 41 in series, one end of the first lead wire 41 is immersed into the water tank 46, one end of the second lead wire 42 is connected with the conducting rod 47, the other end of the first lead wire 41 and the other end of the second lead wire 42 are connected to a first channel 44 on the recorder 4 together, the temperature sensor 5 is connected with a second channel 45 on the recorder 4 through a lead wire, the temperature sensor driving mechanism is composed of an impact cylinder 7, an air source 73, a connecting rod 74, a thin line 75 and a fixed pulley 8, the temperature sensor 5 is fixed on a piston rod 71 of the impact cylinder 7, the air source 73 is connected with the impact cylinder 7, the connecting rod 74, the bottom of the connecting rod 74 is connected with a thin wire 75, the thin wire 75 passes through the fixed pulley 8 to be connected with the conductive rod 47, the constant temperature environment is set as the constant temperature furnace 6, and the constant temperature furnace 6 is arranged at one side of the temperature sensor 5.

The utility model discloses a theory of operation and use flow: the quick mechanical movement of the temperature sensor 5 is realized by the impact cylinder 7, the horizontal movement of the piston rod 71 can be converted into the vertical movement of the conductive rod 47 through the matching of the connecting rod 74, the thin wire 75 and the fixed pulley 8, the conductive rod 47 is contacted with the water surface of the water tank 46 at the moment that the temperature sensor 5 enters the thermostatic oven 6 by adjusting the length of the thin wire 75, at the moment, the first lead 41 is communicated with the second lead 42 to form a pulse level, and the moment when the pulse level is collected by the first channel 44 of the recorder 4 is the initial moment of the temperature step.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a well high temperature step initial moment measurement system, includes constant temperature environment, temperature sensor actuating mechanism, record appearance (4), temperature sensor (5), first wire (41), second wire (42), low-voltage regulator (43), basin (46) and conducting rod (47), its characterized in that: a low-voltage stabilizing source (43) is mounted on the first conducting wire (41) in series, one end of the first conducting wire (41) is immersed into the water tank (46), one end of the second conducting wire (42) is connected with the conducting rod (47), the other end of the first conducting wire (41) and the other end of the second conducting wire (42) are connected to a first channel (44) on the recorder (4) together, and the temperature sensor (5) is connected with a second channel (45) on the recorder (4) through conducting wires.

2. The system for measuring the initial moment of the medium-high temperature step according to claim 1, wherein: the temperature sensor driving mechanism is installed on a ball nut seat (21), the ball nut seat (21) is sleeved on a ball screw (22), the ball screw (22) is transversely installed on a support frame (2), a hand wheel (23) is installed at one end of the ball screw (22), the temperature sensor driving mechanism is composed of a motor (31), a gear (32), a synchronous belt (33) and a synchronous seat (34), a power output shaft of the motor (31) is connected with the gear (32), the gear (32) is meshed with the synchronous belt (33), the synchronous seat (34) is fixed on the synchronous belt (33), a temperature sensor (5) is installed on one side of the synchronous seat (34), a conductive rod (47) is arranged on the other side of the synchronous seat (34), a water tank (46) is arranged below the conductive rod (47), and a constant temperature environment is set as a constant temperature oil tank (1), the constant temperature oil groove (1) is arranged below the temperature sensor (5).

3. The system for measuring the initial moment of the medium-high temperature step according to claim 1, wherein: temperature sensor actuating mechanism comprises impact cylinder (7), air supply (73), connecting rod (74), fine rule (75) and fixed pulley (8), temperature sensor (5) are fixed on piston rod (71) of impact cylinder (7), and air supply (73) are connected with impact cylinder (7), and connecting rod (74) are fixed on piston rod (71), and the bottom of connecting rod (74) is connected with fine rule (75), and fine rule (75) pass fixed pulley (8) and are connected with conducting rod (47), the constant temperature environment sets up to constant temperature furnace (6), and constant temperature furnace (6) set up in one side of temperature sensor (5).

4. The system for measuring the initial moment of the medium-high temperature step according to claim 1, wherein: the voltage of the low-voltage stabilizing source (43) is 5V.