Temperature measuring mechanism for junction box of explosion-proof motor

Abstract

The utility model discloses an explosion-proof motor junction box temperature measuring mechanism, comprising a box cover arranged above a junction box main body, a wire holder arranged inside the junction box main body, a wire inlet hole arranged on the junction box main body, a power line arranged on one side of the junction box main body, and one end of the power line connected with the wire holder; the temperature sensor is arranged above the power line, an energy supply mainboard is arranged in the junction box main body, the energy supply mainboard is fixedly connected with the junction box main body, a data line is arranged between the energy supply mainboard and the temperature sensor, and the energy supply mainboard is electrically connected with the temperature sensor through the data line. The motor junction box is internally provided with the temperature sensor, the temperature sensor is installed on the power line, the temperature sensor is used for measuring the temperature of the power line, a measured temperature signal is transmitted in a wireless mode and processed by external receiving equipment, and the temperature of the power line in the junction box can be monitored in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof motor junction boxes, in particular to a temperature measuring mechanism for an explosion-proof motor junction box. Background Art

[0002] An explosion-proof motor is a motor that can be used in flammable and explosive places and does not generate sparks during operation. The synthetic ammonia system is a complex production process that requires close coordination between all links. If the motor stops running, the entire production line will be affected, resulting in a decrease in production efficiency and may even cause the production line to stagnate. The continuous operation of the motor in the synthetic ammonia system is of great significance in ensuring the stability of the production line, improving product quality and output, reducing energy consumption and operating costs, and preventing safety accidents. Many hidden dangers of the motor can be discovered in advance by our professional inspection personnel and eliminated in the bud, ensuring the continuous operation of the motor.

[0003] The Chinese patent publication number is CN212137487U, and the authorization announcement date is December 11, 2020. It is an explosion-proof motor temperature measurement junction box. The temperature measurement junction box adopts an integrated external style and a two-cavity style internally: the winding heating belt has one cavity, and the stator winding temperature measuring device and the bearing temperature measuring device share a cavity, and the two cavities are separate cavities. The winding heating belt, the stator winding temperature measuring device, and the bearing temperature measuring device are wired out in three directions. The winding heating belt and the stator winding temperature measuring device are wired in internally, and the bearing temperature measuring device is wired in externally. The wire inlet assembly and the wire outlet assembly of this junction box are composed of a gasket, a sealing ring, a blocking plate, and a wiring bucket. After the external cable passes through the sealing ring, it is crimped and tightened by the wiring bucket. The utility model has the advantages of simple structure, easy use, safety and reliability, and good versatility.

[0004] The leads of existing motors are sealed inside the motors, and heating problems are difficult to detect. The current measure is to inspect the junction box during equipment downtime, which requires a lot of manpower and material resources and is not real-time. Manual inspections can only measure the external temperature of the junction box, and there are errors in the measurement data, which is not ideal for analyzing and monitoring the motor lead temperature. Utility Model Content

[0005] The purpose of the utility model is to provide an explosion-proof motor junction box temperature measuring mechanism to solve the problem proposed in the above background technology that the junction box is inspected during equipment shutdown, which requires a lot of manpower and material resources and is not real-time; manual inspection and measurement can only measure the external temperature of the junction box, and the measurement data has errors, which is not ideal for analyzing and monitoring the temperature of the motor leads.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a temperature measuring mechanism for an explosion-proof motor junction box, comprising a junction box body, and also comprising:

[0007] A box cover is arranged above the junction box body, a wiring seat is arranged inside the junction box body, and the wiring seat is fixedly connected to the junction box body, a wire entry hole is arranged on the junction box body, and three wire entry holes are arranged, a power line is arranged on one side of the junction box body, and three power lines are arranged, and the power line is arranged through the wire entry hole, and one end of the power line is connected to the wiring seat;

[0008] A temperature sensor is arranged above the power cord, and a temperature measuring piece at the bottom of the temperature sensor is in contact with the power cord. A power supply mainboard is arranged inside the junction box body, and the power supply mainboard is fixedly connected to the junction box body. A data line is arranged between the power supply mainboard and the temperature sensor, and the power supply mainboard and the temperature sensor are electrically connected through the data line.

[0009] Preferably, alloy steel strips are provided on both sides of the temperature sensor, the alloy steel strips are provided with a connection, and one end of the alloy steel strip is clamped with the temperature sensor, and the alloy steel strip is arranged around the power line.

[0010] Preferably, a code is provided at the upper end of the temperature sensor, and the code is connected to the temperature sensor as a whole.

[0011] Preferably, a connecting hole is provided at the upper end of the junction box body, four connecting holes are provided, and the four connecting holes are provided at the four corners of the junction box body, a connecting bolt is provided above the box cover, four connecting bolts are provided, and the connecting bolts are provided corresponding to the connecting holes, and the box cover and the junction box body are connected by the connecting bolts.

[0012] Preferably, a water-blocking rubber ring is provided inside the wire inlet hole, and the water-blocking rubber ring is connected to the junction box body as a whole, and the water-blocking rubber ring is provided outside the power cord, and the water-blocking rubber ring fits the power cord.

[0013] Preferably, a sealing heat-insulating gasket is provided between the box cover and the junction box body, and the sealing heat-insulating gasket is in close contact with both the junction box body and the box cover.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model device is provided with a temperature sensor and an alloy steel belt. The alloy steel belt fixes the temperature sensor to the power line, and makes the temperature measuring piece at the bottom of the temperature sensor fit the power line. The temperature sensor measures the temperature of the power line. The temperature sensor sends the temperature signal wirelessly, so that the staff can obtain the temperature of the power line in the motor junction box in real time. There is no electrical connection between the temperature sensor and the receiving device, which is cost-effective, safe and reliable.

[0016] 2. The utility model device fills the gap between the power line and the line inlet hole by setting a water-blocking rubber ring, which can effectively prevent rainwater from penetrating into the interior of the junction box from the line inlet hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a top view of the main body of the junction box of the utility model;

[0019] Figure 3 This is a diagram showing the connection relationship between the temperature sensor and the power line of the utility model;

[0020] Figure 4 This is the principle diagram of the temperature sensor of the present utility model.

[0021] In the figure: 1. Junction box body; 2. Box cover; 3. Sealing and heat-insulating gasket; 4. Connecting bolt; 5. Wire inlet hole; 6. Power cord; 7. Water-blocking rubber ring; 8. Terminal block; 9. Connecting hole; 10. Power supply motherboard; 11. Temperature sensor; 12. Data cable; 13. Coding; 14. Alloy steel strip. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: a temperature measuring mechanism for an explosion-proof motor junction box, comprising a junction box body 1, and also comprising:

[0024] A box cover 2 is arranged above the junction box body 1, a wiring seat 8 is arranged inside the junction box body 1, and the wiring seat 8 is fixedly connected to the junction box body 1, a wire entry hole 5 is arranged on the junction box body 1, and three wire entry holes 5 are arranged, a power line 6 is arranged on one side of the junction box body 1, and three power lines 6 are arranged, and the power line 6 is arranged through the wire entry hole 5, and one end of the power line 6 is connected to the wiring seat 8;

[0025] The temperature sensor 11 is arranged above the power cord 6, and the temperature measuring piece at the bottom of the temperature sensor 11 is in contact with the power cord 6. A power supply mainboard 10 is arranged inside the junction box main body 1, and the power supply mainboard 10 is fixedly connected to the junction box main body 1. A data line 12 is arranged between the power supply mainboard 10 and the temperature sensor 11, and the power supply mainboard 10 and the temperature sensor 11 are electrically connected through the data line 12.

[0026] When in use: install the temperature sensor 11 on the power cord 6. The model of the temperature sensor 11 is SPS061V2. When the explosion-proof motor is running, the power cord 6 will generate heat. The temperature sensor 11 measures the temperature of the power cord 6. The temperature sensor 11 sends the temperature signal wirelessly, so that the staff can obtain the temperature of the power cord 6 in the motor junction box in real time.

[0027] See also Figure 3 Alloy steel belts 14 are provided on both sides of the temperature sensor 11. The alloy steel belt 14 is provided with a connection, and one end of the alloy steel belt 14 is clamped with the temperature sensor 11. The alloy steel belt 14 is surrounded by the power cord 6. The temperature sensor 11 is installed on the power cord 6 through the alloy steel belt 14, and the temperature measuring piece at the bottom of the temperature sensor 11 is made to fit with the power cord 6, which is convenient for the subsequent disassembly and assembly of the temperature sensor 11. The alloy steel belt 14 will not generate heat and jitter due to eddy current in a large current working environment, thereby improving the temperature measurement accuracy.

[0028] See also Figure 3 A code 13 is provided at the upper end of the temperature sensor 11, and the code 13 is connected to the temperature sensor 11 as a whole. The temperature sensor 11 can be quickly placed upward through the code 13, which is convenient for later inspection.

[0029] See also Figure 1 and Figure 2 A connecting hole 9 is provided at the upper end of the junction box body 1, and there are four connecting holes 9, and the four connecting holes 9 are arranged at the four corners of the junction box body 1. A connecting bolt 4 is provided above the box cover 2, and there are four connecting bolts 4, and the connecting bolts 4 are arranged corresponding to the connecting holes 9. The box cover 2 is connected to the junction box body 1 through the connecting bolts 4, and the box cover 2 is connected to the junction box body 1 through the connecting bolts 4 and the connecting holes 9.

[0030] See also Figure 1 and Figure 2 A water-blocking rubber ring 7 is provided inside the wire inlet hole 5, and the water-blocking rubber ring 7 is connected to the junction box body 1 as a whole. The water-blocking rubber ring 7 is arranged on the outside of the power cord 6, and the water-blocking rubber ring 7 fits the power cord 6. The gap between the power cord 6 and the wire inlet hole 5 is filled by the water-blocking rubber ring 7, which can effectively prevent rainwater from penetrating into the interior of the junction box from the wire inlet hole 5.

[0031] See also Figure 1 A sealing heat-insulating gasket 3 is provided between the box cover 2 and the junction box body 1, and the sealing heat-insulating gasket 3 is in contact with both the junction box body 1 and the box cover 2. The sealing heat-insulating gasket 3 ensures the sealing of the connection between the junction box body 1 and the box cover 2, thereby reducing the heat dissipation of the junction box to a certain extent.

[0032] Working principle: Use alloy steel belt 14 to install temperature sensor 11 on power cord 6, so that the temperature measuring piece at the bottom of temperature sensor 11 fits with power cord 6. Model of temperature sensor 11 is SPS061V2. When explosion-proof motor is running, power cord 6 will generate heat. Temperature sensor 11 measures the temperature of power cord 6. Temperature sensor 11 sends temperature signal wirelessly. External receiving device receives and processes the temperature signal, so that staff can obtain the temperature of power cord 6 in motor junction box in real time. There is no electrical connection between temperature measuring mechanism and receiving device, which is cost-effective, safe and reliable.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature measurement mechanism for an explosion-proof motor junction box, comprising a junction box body (1), characterized in that: Also includes: A box cover (2) is arranged above the junction box body (1); a wiring seat (8) is arranged inside the junction box body (1), and the wiring seat (8) is fixedly connected to the junction box body (1); a wire entry hole (5) is arranged on the junction box body (1), and three wire entry holes (5) are arranged; a power line (6) is arranged on one side of the junction box body (1), and three power lines (6) are arranged, and the power line (6) is arranged to pass through the wire entry hole (5); one end of the power line (6) is connected to the wiring seat (8); A temperature sensor (11) is arranged above the power line (6), and a temperature measuring piece at the bottom of the temperature sensor (11) is in contact with the power line (6); a power supply mainboard (10) is arranged inside the junction box main body (1), and the power supply mainboard (10) is fixedly connected to the junction box main body (1); a data line (12) is arranged between the power supply mainboard (10) and the temperature sensor (11), and the power supply mainboard (10) and the temperature sensor (11) are electrically connected via the data line (12).

2. The temperature measuring mechanism of an explosion-proof motor junction box according to claim 1, characterized in that: Alloy steel strips (14) are provided on both sides of the temperature sensor (11), the alloy steel strip (14) is provided with a connection, and one end of the alloy steel strip (14) is clamped with the temperature sensor (11), and the alloy steel strip (14) is arranged around the power line (6).

3. The temperature measuring mechanism of an explosion-proof motor junction box according to claim 1, characterized in that: A code (13) is provided at the upper end of the temperature sensor (11), and the code (13) and the temperature sensor (11) are connected as a whole.

4. The temperature measuring mechanism of an explosion-proof motor junction box according to claim 1, characterized in that: The upper end of the junction box body (1) is provided with a connection hole (9), four of which are provided and arranged at four corners of the junction box body (1); the upper part of the box cover (2) is provided with a connection bolt (4), four of which are provided and arranged corresponding to the connection holes (9); the box cover (2) and the junction box body (1) are connected via the connection bolt (4).

5. The temperature measuring mechanism of an explosion-proof motor junction box according to claim 1, characterized in that: A water-blocking rubber ring (7) is arranged inside the wire inlet hole (5), and the water-blocking rubber ring (7) is connected to the junction box body (1) as a whole; the water-blocking rubber ring (7) is arranged outside the power line (6), and the water-blocking rubber ring (7) fits the power line (6).

6. The temperature measuring mechanism of an explosion-proof motor junction box according to claim 1, characterized in that: A sealing heat-insulating gasket (3) is provided between the box cover (2) and the junction box body (1), and the sealing heat-insulating gasket (3) fits the junction box body (1) and the box cover (2).

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