CN215865243U

CN215865243U - Desktop formula fiber ring proof box

Info

Publication number: CN215865243U
Application number: CN202121779830.0U
Authority: CN
Inventors: 马行星; 于超; 邹欢欢; 何花; 赵鑫
Original assignee: SUZHOU OPTORING TECHNOLOGY CO LTD
Current assignee: SUZHOU OPTORING TECHNOLOGY CO LTD
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-18
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a desktop type optical fiber ring test box which comprises an upper shell and a lower shell hermetically connected with the upper shell, wherein an optical fiber ring is placed in the upper shell, a temperature control device is arranged in the lower shell, the optical fiber ring is connected with the temperature control device, the temperature control device comprises a heating and refrigerating chip, a radiating fin and a plurality of water tanks for cooling the hot ends of the heating and refrigerating chip, one side of the radiating fin is connected with the heating and refrigerating chip, the other side of the radiating fin is connected with the water tanks, and one end of the heating and refrigerating chip, which is far away from the radiating fin, is connected with the optical fiber ring. The utility model has simple structure, and cools the hot end of the heating and refrigerating chip through the water circulation in the water tank, thereby providing a larger temperature test range for the temperature test of the optical fiber ring.

Description

Desktop formula fiber ring proof box

This patent application refers to the entire disclosure of a prior patent application by the same applicant under the name "fiber optic ring temperature exciting device" with the publication number CN 106370203A.

Technical Field

The utility model relates to the field of optical fiber sensing, in particular to a desktop type optical fiber ring test box.

Background

The optical fiber gyroscope is an optical fiber angular velocity sensor, which is one of various optical fiber sensors with the most promising popularization and application. The fiber-optic gyroscope has the advantages of no mechanical moving part, no preheating time, insensitive acceleration, wide dynamic range, digital output, small volume and the like, as well as the annular laser gyroscope. In addition, the fiber-optic gyroscope overcomes the fatal defects of high cost, locking phenomenon and the like of the ring-shaped laser gyroscope.

The core technology of the fiber-optic gyroscope lies in the fiber-optic ring technology, and the fiber-optic ring directly determines the final precision of the fiber-optic gyroscope. In order to improve the quality of the optical fiber ring in the optical fiber gyro product, each product needs to have excellent technical indexes and temperature stability, so that the optical fiber gyro has excellent scale factor stability and zero offset stability when the ambient temperature changes within the full temperature range. Therefore, to improve the precision of the fiber optic gyroscope, the quality of the fiber optic ring must be ensured, and precise temperature mechanism control is a key factor for testing the quality of the fiber optic ring. Usually, the quality of the optical fiber ring is detected by mainly using a high-low temperature box to control the temperature of the optical fiber ring, but the device adopts a compressor refrigeration mode, so the appearance is large in size, the structure is complex, and the carrying is inconvenient. In the prior art, patent CN201610933402.6 proposes a fiber ring temperature exciting device, which, although the device structure is simplified to some extent, still has some redundant structures and the range of the testing temperature that can be detected by the device is limited.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a desktop type optical fiber ring test box which is simple in structure and large in temperature test range.

The utility model is realized by the following technical scheme:

the utility model provides a desktop formula optic fibre ring proof box, including the upper casing and with upper casing sealing connection's lower casing, the optic fibre ring is placed in the upper casing, the internal temperature control device that is provided with of lower casing, the optic fibre ring is connected with temperature control device, temperature control device is used for cooling the water tank of heating refrigeration chip hot junction including heating refrigeration chip, fin and a plurality of, fin one side and heating refrigeration chip are connected, the opposite side with the water tank is connected, the one end and the optic fibre ring that the fin was kept away from to the heating refrigeration chip are connected.

Further, the water tank sets up and leans on lower casing inner wall position in casing bottom both sides down, just all through water piping connection between the water tank and between water tank and the fin.

Furthermore, the temperature control device further comprises a plurality of fans, the fans are arranged on the side face of the lower shell and symmetrically arranged on two sides of the radiating fins, and an air inlet is formed in the lower shell.

Further, the device also comprises a clamp arranged in the upper shell, the optical fiber ring is accommodated in the clamp, and the clamp is connected with a heating and refrigerating chip on the temperature control device. The fixture comprises a fixture base, a fixture outer ring, a fixture inner ring and a fixture upper cover, wherein the fixture base is connected with the heating and refrigerating chip, the fixture inner ring is contained in the fixture outer ring, and the fixture outer ring and the fixture inner ring are both arranged between the base and the fixture upper cover.

Furthermore, a wire slot is arranged on the clamp base, and a tail fiber led out by an optical fiber ring in the clamp is accommodated in the wire slot.

Furthermore, a wire hole is formed in the outer ring of the clamp, and tail fibers led out from the optical fiber ring are led out from the wire hole.

Furthermore, the device also comprises a temperature sensor, wherein the temperature sensor is arranged at a position, close to the outer ring of the clamp, on the clamp base, and the temperature sensor is electrically connected with a temperature acquisition serial port on the lower shell.

Further, a cavity is formed between the clamp base and the upper shell, and the clamp is accommodated in the cavity.

Furthermore, the device also comprises a control screen arranged on the lower shell, and the heating and refrigerating chip and the fan are electrically connected with the control screen.

Further, a heat insulation layer is arranged in the upper shell.

Compared with the prior art, the utility model has the advantages that:

1. through last casing and lower casing sealing connection, through the temperature in the control heating refrigeration chip further control cavity, simple structure.

2. Through the inside temperature of temperature sensor real-time supervision cavity, the temperature feedback who will gather gives the proof box for temperature control is more accurate.

3. Through the dual heat sink of water tank and fan, when refrigerating, the hot junction cooling effect of heating refrigeration chip is more obvious to make the cold junction can provide lower temperature.

Drawings

FIG. 1 is an overall assembly view of a desktop optical fiber ring test chamber according to one embodiment of the present invention;

FIG. 2 is a partial block diagram of the desktop fiber optic ring test chamber of FIG. 1;

FIG. 3 is a right side view of the desktop fiber optic ring test chamber of FIG. 1;

fig. 4 is a cross-sectional view taken along line a-a of fig. 3.

1-upper shell, 10-cavity and 100-heat insulation layer; 2-a lower shell; 3-temperature control device, 30-heating and refrigerating chip, 31-radiating fin, 32-fan, 33-water tank, 330-water pipe, 34-air inlet; 4-clamp, 40-clamp base, 400-wire groove, 41-clamp outer ring, 410-wire hole, 42-clamp inner ring and 43-clamp upper cover; 5-a fiber ring; 6-control screen, 7-temperature sensor.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1, fig. 2 and fig. 4, the desktop optical fiber ring test box according to an embodiment of the present invention includes an upper housing 1, a lower housing 2 hermetically connected to the upper housing 1, a temperature control device 3, a clamp 4, a control screen 6 and a temperature sensor 7, where the clamp 4 and the temperature sensor 7 are both disposed in the upper housing 1, the optical fiber ring 5 is disposed in the upper housing 1, the temperature control device 3 is disposed in the lower housing 2, the control screen 6 is disposed on the lower housing 2, the optical fiber ring 5 is accommodated in the clamp 4, the clamp 4 is connected to the temperature control device 3, and the temperature sensor 7 is electrically connected to a temperature acquisition serial port on the lower housing 2.

Specifically, the temperature to be tested and the time required from the existing temperature to the target temperature are set on the control screen 6, after the setting is completed, the temperature control device 3 uniformly heats or refrigerates the optical fiber ring 5 through the clamp 4, and the energy generated by the temperature control device 3 enables the optical fiber ring 5 in the clamp 4 to generate axial thermal gradient distribution. Go up casing 1 and casing 2 sealing connection down, prevent that external factors from having influenced the detection data of heating or refrigeration in-process optic fibre ring, simultaneously, temperature sensor 7 temperature near real-time supervision anchor clamps 4 feeds back the temperature that detects to the proof box through the temperature acquisition serial ports, also can be with the transmission serial ports connection on host computer and the proof box, arranges the temperature data of gathering in the host computer.

As shown in fig. 4, a cavity 10 is disposed in the upper housing 1, the clamp 4 is accommodated in the cavity 10, and a heat insulation layer 100 is further disposed in the upper housing 1, and the heat insulation layer can better seal the cavity 10, so as to prevent the loss of the internal energy of the cavity 10 and the influence of the factor outside the housing on the test result.

As shown in fig. 2, fig. 3 and fig. 4, the temperature control device 3 includes a heating and cooling chip 30, a water tank 33 and a fan 32 for cooling the hot end of the heating and cooling chip 30, and a heat sink 31 and an air inlet 34. One side of the heat radiating fin 31 is connected with the heating and refrigerating chip 30 through heat-conducting silicone grease, the other side of the heat radiating fin is indirectly connected with the water tank 33, and one end, far away from the heat radiating fin 31, of the heating and refrigerating chip 30 is connected with the optical fiber ring 5. The water tanks 33 are arranged at the two sides of the bottom of the lower shell 2 near the inner wall of the lower shell 2, and the water tanks 33 and the radiating fins 31 are connected through water pipes 330. The fan 32 is disposed on the side of the lower casing 2 and symmetrically disposed on both sides of the heat sink 31, and the air inlet 34 is disposed in the lower casing 2. The heating and cooling chip 30 and the fan 32 are both electrically connected with the control panel 6.

Specifically, the heating and cooling chip 30 works on the principle that a cooling semiconductor is sandwiched between two ceramic sheets, and after the power supply is turned on, the electronic cathode starts to pass through the P-type semiconductor, the heat absorbed by the P-type semiconductor reaches the N-type semiconductor, and the heat is released, so that the heat is sent out from one side to the other side through an NP module to form a cold end and a hot end due to temperature difference. When the current flows in the positive direction, one ceramic plate heats and the other ceramic plate refrigerates; when the current flows in the reverse direction, the cooling and heating ends are interchanged. Therefore, by controlling the direction of the current, heating or cooling can be performed, thereby controlling the temperature change. Therefore, when heating operation is performed, one side of the heating and cooling chip 30 close to the clamp 4 is a hot end, one side far away from the clamp 4 is a cold end, and the hot end is the optical fiber ring 5 for temperature rise operation; when the refrigeration operation is performed, one side of the heating and refrigeration chip 30 close to the clamp 4 is a cold end, one side far away from the clamp 4 is a hot end, the cold end is used for cooling the optical fiber ring 5, and the lowest temperature provided by the cold end is closely related to the heat dissipation condition of the hot end.

The main functions of the fan 32 and the heat sink 31 are to cool the hot end of the cooling chip 30 during the cooling operation, so that the cold end is effective and low in temperature, but only the heat sink 31 and the fan 32 have limited effect, and the cold end cannot be lowered to below zero, and the heat sink 31 is actively cooled by selecting the water tank 33. In this embodiment, two water tanks 33 are provided in the lower housing 2, water circulation is performed between the two water tanks 33 through the water pipe 330, heat on the radiator 31 is taken away quickly through the water circulation, the effect is good, the temperature of the cold end of the heating and cooling chip 30 can be reduced to-40 ℃ through the operation, and the temperature test range of the optical fiber ring 5 is widened.

As shown in fig. 4, the clamp 4 includes a clamp base 40, a clamp outer ring 41, a clamp inner ring 42 and a clamp upper cover 43, the clamp base 40 and the heating and cooling chip 30 are bonded by heat-conducting silicone grease, the clamp inner ring 42 is accommodated in the clamp outer ring 41, and the clamp outer ring 41 and the clamp inner ring 4 are both disposed between the base 40 and the clamp upper cover 43.

A wire groove 400 is arranged on the clamp base 40, and the tail fiber led out from the optical fiber ring 5 in the clamp 4 is accommodated in the wire groove 400.

The clamp outer ring 41 is provided with a wire hole 410, and the tail fiber led out from the optical fiber ring 5 is led out from the wire hole 410.

When the device is used, the temperature in one fixed cavity 10 is changed according to the temperature gradient controlled by a program by heating or refrigerating, and the device can meet the temperature range of an optical fiber ring test from-40 ℃ to 100 ℃; when the temperature in the cavity 10 needs to be raised, the side of the heating and cooling chip 30, which is against the cavity 10, starts to be heated, and the heating is stopped when the temperature is raised to the set temperature; when the cavity needs to be cooled down, the heating and refrigerating chip 30 starts to refrigerate by leaning against the surface of the cavity 10, the heat generated by the surface of the heating and refrigerating chip 30 far away from the cavity 10 during refrigeration is reduced in temperature through the fan 32 and the water tank 33, and the trend of water in the water tank 33 is as follows: the cold water in the left water tank 33 on the side passes through the heat sink 31, the water in the heat sink 31 is changed into hot water and passes through the right water tank 33, and the water in the right water tank 33 returns to the left water tank 33 through air cooling and circulates all the time.

During specific operation, two tail fibers of the optical fiber ring 5 are combined together and placed into the test fixture 4, the fixture upper cover 43 of the fixture 4 is covered, the tail fibers are led out from the wire hole 410 of the fixture outer ring 41, the led-out tail fibers are accommodated in the wire groove 400, and the tail fibers led out from the optical fiber ring 5 and the tail fibers led out from the gyro test system are welded in equal length. The temperature sensor 7 is pressed against the clamp base 40 at a position close to the clamp 4. The temperature sensor 7 is connected with a temperature acquisition serial port on the lower shell 2. In this embodiment, the temperature curves of the incubator are sequentially set to be 25 ℃ for 2h, 25 ℃ for cooling to-30 ℃ (temperature gradient of 1 ℃/min), -30 ℃ for 2h, and-30 ℃ for heating to 60 ℃ (temperature gradient of 1 ℃/min), 60 ℃ for 2h, 60 ℃ for cooling to 25 ℃ (temperature gradient of 1 ℃/min), and 25 ℃ for 2h, and simultaneously, gyro data acquisition software and temperature acquisition software are started to acquire data. The utility model has simple structure, and cools the hot end of the heating and refrigerating chip through the water circulation in the water tank, thereby providing a larger temperature test range for the temperature test of the optical fiber ring.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The desktop type optical fiber ring test box comprises an upper shell (1) and a lower shell (2) which is connected with the upper shell (1) in a sealing mode, wherein an optical fiber ring (5) is placed in the upper shell (1), a temperature control device (3) is arranged in the lower shell (2), the optical fiber ring (5) is connected with the temperature control device (3), the desktop type optical fiber ring test box is characterized in that the temperature control device (3) comprises a heating and refrigerating chip (30), a radiating fin (31) and a plurality of water tanks (33) which are used for cooling the hot end of the heating and refrigerating chip (30), one side of the radiating fin (31) is connected with the heating and refrigerating chip (30), the other side of the radiating fin is connected with the water tanks (33), and one end, far away from the radiating fin (31), of the heating and refrigerating chip (30) is connected with the optical fiber ring (5).

2. The desktop optical fiber ring test chamber as claimed in claim 1, wherein the water tanks (33) are disposed at two sides of the bottom of the lower housing (2) and close to the inner wall of the lower housing (2), and the water tanks (33) and the heat dissipation fins (31) are connected through water pipes (330).

3. The desktop optical fiber ring test chamber as claimed in claim 2, wherein the temperature control device (3) further comprises a plurality of fans (32), the fans (32) are disposed on the side of the lower housing (2) and symmetrically disposed on both sides of the heat sink (31), and an air inlet (34) is further disposed in the lower housing (2).

4. The desktop optical fiber ring test chamber as claimed in claim 1, further comprising a clamp (4) disposed in the upper housing (1), wherein the optical fiber ring (5) is accommodated in the clamp (4), the clamp (4) is connected to the heating and cooling chip (30) on the temperature control device (3), the clamp (4) comprises a clamp base (40), a clamp outer ring (41), a clamp inner ring (42) and a clamp upper cover (43), the clamp base (40) is connected to the heating and cooling chip (30), the clamp inner ring (42) is accommodated in the clamp outer ring (41), and the clamp outer ring (41) and the clamp inner ring (42) are both disposed between the base (40) and the clamp upper cover (43).

5. The desktop optical fiber ring test chamber as claimed in claim 4, wherein a slot (400) is provided on the clamp base (40), and a pigtail led out from the optical fiber ring (5) in the clamp (4) is accommodated in the slot (400).

6. The desktop optical fiber ring test chamber as claimed in claim 4, wherein a wire hole (410) is formed in the outer clamp ring (41), and a tail fiber led out from the optical fiber ring (5) is led out from the wire hole (410).

7. The desktop optical fiber ring test box of claim 4, further comprising a temperature sensor (7), wherein the temperature sensor (7) is disposed on the fixture base (40) near the fixture outer ring (41), and the temperature sensor (7) is electrically connected to the temperature acquisition serial port on the lower housing (2).

8. The desktop fiber optic ring test chamber of claim 7, wherein a cavity (10) is formed between the clamp base (40) and the upper housing (1), and the clamp (4) is received in the cavity (10).

9. The desktop optical fiber ring test chamber as claimed in claim 8, further comprising a control panel (6) disposed on the lower housing (2), wherein the heating and cooling chip (30) and the fan (32) are electrically connected to the control panel (6).

10. The desktop optical fiber ring test chamber of claim 1, wherein a thermal insulation layer (100) is disposed within the upper housing (1).