A fully isolated contact type temperature sensing warning device

Abstract

The utility model discloses a fully isolated contact type temperature sensing warning device, which is composed of an RTD temperature sensor, an isolation box, a damping seal, a strong permanent magnet, a damping spring, a sealing cover, a sealing hood, and self-expanding polystyrene. The device is suitable for use in large thermal power generating sets when a temperature difference assembly method is used for pre-assembly of a coupling. The utility model adopts a spring-type pressing principle, which can effectively shield the influence of the ambient temperature on the temperature sensor, directly and accurately measure the actual temperature of the coupling after freezing and cooling, and can effectively improve the efficiency and success rate of the coupling assembly. The device has the characteristics of compact structure, good stability, accurate measurement, and convenient installation and disassembly.

Description

Technical Field

[0001] The utility model relates to the field of gas turbine generators, in particular to a fully isolated contact-type temperature sensing warning device suitable for single-shaft dual-drive combined cycle gas turbine generators. Background Art

[0002] When the generator of a single-shaft dual-drive combined cycle gas turbine generator set is connected to the equipment on the left and right sides, the temperature difference assembly method needs to be used to tighten the connection. During the process, the coupling of the generator shaft needs to be cooled down, and dry ice cooling is generally used for cooling. The current mainstream monitoring method is to set a laser or infrared remote temperature measuring device on the proprietary coupling process tool to perform non-contact measurement of whether the coupling of the generator shaft has reached the preset temperature. Since the temperature measuring device set on the proprietary coupling process tool measures the outer surface temperature of the coupling of the generator shaft, it is easily affected by the surrounding dry ice that has not been dispersed, resulting in a large deviation in the measured temperature, which has a negative impact on the installation progress and accuracy. Utility Model Content

[0003] In view of this, the purpose of the utility model is to disclose a fully isolated contact-type temperature sensing warning device which adopts a spring-type pressing principle, can effectively shield the influence of the surrounding temperature on the temperature sensor, directly and accurately measure the actual temperature of the coupling after freezing and cooling, effectively improve the efficiency and success rate of the coupling assembly, and has the characteristics of compact structure, good stability, accurate measurement, convenient installation and disassembly, etc. The technical scheme of the utility model is: it is composed of an RTD temperature sensor, an isolation box, a damping sealing pad, a strong permanent magnet, a damping spring, a sealing cover, a sealing cover, and self-expanding polystyrene. The isolation box is made of polyethylene synthetic material, the isolation box is in the form of a hollow cylindrical shell, there is a temperature measuring groove at the center of the isolation box, there is a groove A on the upper side of the isolation box, and the There is a groove B on the upper surface of the outside of the isolation box, the groove A is an annular groove, and the groove B is an annular groove. The isolation box is placed horizontally, the RTD temperature sensor is placed in the temperature measuring groove of the isolation box from bottom to top, and then the damping spring is placed at the bottom of the RTD temperature sensor, the sealing cover and the isolation box are clamped at the clamping position A, the strong permanent magnet is placed in the groove A inside the isolation box and glued, the damping sealing pad is placed in the groove B outside the isolation box from top to bottom and glued, the self-expanding polystyrene is filled into the filling space inside the isolation box, the sealing cover and the isolation box are clamped at the clamping position B, the RTD temperature sensor is a resistive RTD, with a built-in battery and a signal transmitter, which can transmit the temperature signal wirelessly and remotely to the operator, and the effective distance of the signal transmission is 20-50 meters.

[0004] Compared with the prior art, the beneficial effects of the utility model are:

[0005] 1. The data measured by the utility model is more accurate. First of all, the utility model adopts the principle of magnetic attraction and adsorbs on the inner wall of the coupling of the generator shaft. This is the position of the coupling of the entire generator shaft with the least water vapor during the cooling process. Compared with the traditional peripheral measurement method, it is least affected by environmental factors; secondly, except for the contact point between the RTD temperature sensor and the inner wall of the coupling of the generator shaft, all other positions of the utility model are temperature-isolated with self-expanding polystyrene, which can minimize the impact of insufficiently sublimated dry ice in the air and water vapor generated by cooling on the measurement data, ensuring the accuracy of the measurement data; at the same time, the measurement method adopted by the utility model is contact measurement, compared with the existing non-contact measurement methods such as laser and infrared, the data is more direct and accurate; the damping seal can effectively isolate water vapor; the damping spring provides sufficient preload force to ensure that the RTD temperature sensor is in close contact with the inner wall of the coupling of the generator shaft.

[0006] 2. The utility model has a compact structure and can be set at any point on the inner wall of the coupling of the generator shaft. It only takes one step to install and disassemble, which is very convenient. At the same time, since the generator shaft is highly magnetic, the utility model is very stable when installed by magnetic attraction, and the measurement stability is excellent. In addition, the utility model can be reused to reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The utility model is a fully isolated contact type temperature sensing warning device.

[0008] Figure 2 for Figure 1 A-direction view.

[0009] Figure 3 This is a schematic diagram of the use of the utility model.

[0010] Figure 4 Detailed drawing of the isolation box.

[0011] Figure 5 for Figure 3 B view.

[0012] Figure 6 for Figure 5 Enlarged view of part C.

[0013] Explanation of the markings in the figure: 1-RTD temperature sensor; 2-isolation box; 3-damping seal; 4-strong permanent magnet; 5-damping spring; 6-sealing cover; 7-sealing cover; 8-self-expanding polystyrene; 9-inner wall of the coupling of the generator shaft; 10-temperature measuring tank; 11-groove A; 12-groove B; 13-clamping position A; 14-clamping position B; 15-filling space; 16-installation position of the utility model. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0015] It should be clarified that in the description of the present invention, terms indicating positional relationships or orientations such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the positional relationships or orientations shown in the drawings, and are intended to facilitate the understanding of the present invention, rather than indicating or implying that the referred to components must have a specific orientation or position, and be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0016] like Figure 1 , Figure 2 , Figure 4 , Figure 6 As shown, a fully isolated contact type temperature sensing warning device is composed of an RTD temperature sensor 1, an isolation box 2, a damping sealing pad 3, a strong permanent magnet 4, a damping spring 5, a sealing cover 6, a sealing cover 7, and a self-expanding polystyrene 8. The isolation box 2 is made of polyethylene synthetic material, and the isolation box 2 is in the form of a hollow cylindrical shell. A temperature measuring groove 10 is provided at the center of the isolation box 2, a groove A11 is provided on the upper side of the isolation box 2, and a groove B12 is provided on the upper surface of the outside of the isolation box 2. The groove A11 is an annular groove, and the groove B12 is an annular groove. The isolation box 2 is placed horizontally, and the RTD temperature sensor 1 is placed in the temperature measuring groove 10 of the isolation box 2 from bottom to top, and then the damping spring 5 is placed at the lower part of the RTD temperature sensor 1. The sealing cover 6 and the isolation box 2 are clamped at the clamping position A13, and the strong permanent magnet 4 is placed in the groove A11 inside the isolation box 2 and glued to prevent The damping seal 3 is placed from top to bottom into the groove B12 on the outside of the isolation box 2 and glued firmly, the self-expanding polystyrene 8 is filled into the filling space 15 inside the isolation box 2, and the sealing cover 7 is clamped with the isolation box 2 at the clamping position B14. The RTD temperature sensor 1 is a resistive RTD with a built-in battery and a signal transmitter, which can transmit the temperature signal wirelessly and remotely to the operator. The effective distance of signal transmission is 20-50 meters. Except for the contact point between the RTD temperature sensor 1 and the inner wall 9 of the coupling of the generator shaft, all other positions of the utility model are temperature-insulated with self-expanding polystyrene 8, which can minimize the influence of insufficiently sublimated dry ice in the air and water vapor generated by cooling on the measurement data, thereby ensuring the accuracy of the measurement data; the damping seal 3 can effectively isolate water vapor; the damping spring 5 provides sufficient preload force to ensure that the RTD temperature sensor 1 is in close contact with the inner wall 9 of the coupling of the generator shaft.

[0017] like Figure 3 , Figure 5As shown, the utility model adopts the magnetic attraction principle and adsorbs on the inner wall 9 of the coupling of the generator shaft. This is the position of the coupling of the entire generator shaft with the least water vapor during the cooling process. Compared with the traditional peripheral measurement method, it is least affected by environmental factors.

Claims

1. A fully isolated contact-type temperature sensing warning device, characterized in that: The invention comprises an RTD temperature sensor (1), an isolation box (2), a damping seal (3), a strong permanent magnet (4), a damping spring (5), a sealing cover (6), a sealing cover (7), and a self-expanding polystyrene (8). The isolation box (2) is made of a polyethylene synthetic material and is in the form of a hollow cylindrical shell. A temperature measuring groove (10) is provided at the center of the isolation box (2). A groove A (11) is provided on the upper side of the interior of the isolation box (2). A groove B (12) is provided on the upper surface of the exterior of the isolation box (2). The groove A (11) is an annular groove and the groove B (12) is an annular groove. 2) is placed horizontally, the RTD temperature sensor (1) is placed from bottom to top into the temperature measuring groove (10) of the isolation box (2), and then the damping spring (5) is placed at the lower part of the RTD temperature sensor (1), the sealing cover (6) and the isolation box (2) are clamped at the clamping position A (13), the strong permanent magnet (4) is placed in the groove A (11) inside the isolation box (2) and glued, the damping sealing pad (3) is placed from top to bottom into the groove B (12) outside the isolation box (2) and glued, the self-expanding polystyrene (8) is filled into the filling space (15) inside the isolation box (2), and the sealing cover (7) and the isolation box (2) are clamped at the clamping position B (14).

2. A fully isolated contact-type temperature sensing warning device according to claim 1, characterized in that: The RTD temperature sensor (1) is a resistive RTD with a built-in battery and a signal transmitter, which can wirelessly transmit the temperature signal to the operator remotely. The effective distance of the signal transmission is 20-50 meters.

Images