Wireless temperature measuring device for elbow-shaped joint of transformer

Abstract

The utility model discloses a wireless temperature measuring device for an elbow-shaped joint of a transformer, which relates to the technical field of intelligent temperature measurement and comprises a joint body, a wireless temperature measuring device sensor movably inserted on the outer wall of the joint body, a dry powder cylinder arranged at the bottom of the joint body, an inflator pump mounted on the outer side of the dry powder cylinder, and an air inlet pipe mounted on the top of the inflator pump. An exhaust pipe penetrates through the outer side of the dry powder cylinder, a conveying pipe is installed on one side of the exhaust pipe, and a sealing inner pipe is installed on the inner wall of the exhaust pipe. Dry powder is stored through the dry powder cylinder, the dry powder cylinder is inflated through the inflation pump, when the air pressure in the dry powder cylinder is increased, the air valve in the exhaust pipe can be pushed open, the dry powder is conveyed into the connector body through the conveying pipe and the telescopic pipe, and therefore the connector body can be cooled and extinguished; therefore, the situation of fire caused by internal aging, poor contact or loosening of cable joints of the elbow-shaped joints can be effectively avoided, and the safety of the device is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent temperature measurement, in particular to a wireless temperature measurement device for a transformer elbow joint. Background Art

[0002] Burning accidents often occur on the high-voltage side of the transformer due to loose cable joints, aging insulation, partial discharge, high-voltage leakage, etc., which seriously threaten the safe operation of the transformer. The elbow joint currently used on the transformer is a closed shell, one end of which is inserted into the adapter on the transformer and the other end is connected to the cable. In actual working conditions, due to internal aging of the elbow joint, poor contact or loose cable connection, it is easy to cause excessive resistance and heat. If the temperature of the heating part cannot be detected in real time, it is easy to cause accidents such as equipment burning.

[0003] At present, the internal temperature of the elbow joint used in the transformer is measured by first measuring the surface temperature of the elbow joint through external temperature measuring equipment such as infrared thermometer, and then estimating the internal temperature of the elbow joint based on experience. This temperature measurement method cannot adapt to complex and changeable external factors, and the internal temperature of the elbow joint obtained in a colder or hotter environment deviates greatly from the actual temperature, which can easily cause damage to the elbow joint.

[0004] After searching the existing Chinese patents: a wireless temperature measurement device for elbow-type joints on transformers (publication number: CN217716704U), including a joint body, a wireless temperature sensor, and an intelligent temperature measurement collector, wherein the joint body includes a vertical tube and a horizontal tube connected to the vertical tube, a crimping terminal is provided in the vertical tube, a plug-in rod and an insulating limit block are provided inside the horizontal tube, the plug-in rod passes through the insulating limit block and is installed in the horizontal tube, and one end of the plug-in rod extends out of the horizontal tube and the other end is connected to the crimping terminal; the wireless temperature sensor is arranged in the insulating limit block to detect the temperature of the plug-in rod; the intelligent temperature measurement collector is connected to the wireless temperature sensor in communication to obtain the temperature data measured by the wireless temperature sensor, and an alarm is provided on the intelligent temperature measurement collector. The device has a simple structure and has the effect of temperature measurement and early warning.

[0005] Although the above-mentioned Chinese patent has achieved the effects of temperature measurement and early warning, the device lacks a fire extinguishing mechanism. During use, when the elbow joint is aged, the contact is poor, or the cable connection is loose, it is easy to cause excessive resistance and thus cause a fire accident. It takes a certain amount of time for the user to process the signal from receiving it to processing it, and the joint needs to be disassembled, which makes it easy for a fire accident to occur.

[0006] Therefore, it is necessary to invent a wireless temperature measuring device for transformer elbow joint to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a wireless temperature measuring device for a transformer elbow joint, so as to solve the problem of lack of a fire extinguishing mechanism in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wireless temperature measuring device for a transformer elbow joint, comprising a joint body, a wireless temperature measuring device sensor being movably plugged into the outer wall of the joint body, a dry powder cylinder being arranged at the bottom of the joint body, a threaded cap being threadedly connected to the top of the dry powder cylinder, an air pump being installed at the outer side of the dry powder cylinder, an air intake pipe being installed at the top of the air pump, an exhaust pipe being penetrated and connected to the outer side of the dry powder cylinder, a transport pipe being installed at one side of the exhaust pipe, a mounting seat being fixedly connected to the outer wall of the dry powder cylinder, a sealed inner tube being installed on the inner wall of the exhaust pipe, a structural inner ring being fixedly connected to the inner wall of the sealed inner tube, an extrusion plate being movably connected to the inside of the sealed inner tube, a plurality of groups of discharge troughs being provided on the outer wall of the sealed inner tube, and the plurality of groups of the discharge troughs being distributed in a ring shape on the outer wall of the sealed inner tube.

[0009] Preferably, a telescopic tube is provided on the top of the transport tube.

[0010] Preferably, a connecting flange is provided on one side of the exhaust pipe.

[0011] Preferably, the outer wall of the dry powder cartridge is provided with a threaded outer wall, and a sealing gasket is installed inside the threaded cap.

[0012] Preferably, an ash filter plate is installed on the inner wall of the air intake pipe.

[0013] Preferably, a rubber ring is installed on the outer side of the inner ring of the structure.

[0014] Preferably, a sealing spring is fixedly connected to one side of the extrusion plate.

[0015] Technical effects and advantages of the utility model:

[0016] 1. By arranging a dry powder cylinder, a threaded cap, an air pump, an air inlet pipe, an exhaust pipe, a transport pipe, a telescopic pipe, a connecting flange, a threaded outer wall, a sealing gasket, an ash filter plate and a mounting seat, the device can store dry powder through the dry powder cylinder, and inflate the dry powder cylinder through the air pump. When the air pressure in the dry powder cylinder increases, the air valve in the exhaust pipe can be pushed open and the dry powder can be transported to the joint body through the transport pipe and the telescopic pipe, so that the joint body can be cooled and the fire can be extinguished, thereby effectively avoiding the fire caused by aging of the elbow joint, poor contact or loose cable connection, thereby ensuring the safety of the device;

[0017] 2. By arranging a sealing inner tube, a structural inner ring, a rubber ring, an extrusion plate, a sealing spring and a discharge trough, the device can push the extrusion plate and the rubber ring for extrusion through the rebound force of the sealing spring in the sealing inner tube, thereby sealing the sealing inner tube to avoid the dry powder in the dry powder cylinder from overflowing during stagnation, and at the same time avoid the backflow of dry powder and air, thereby improving the practicality and fire extinguishing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of a wireless temperature measuring device for a transformer elbow joint.

[0020] Figure 2 The utility model is a schematic diagram of the explosion structure of a wireless temperature measuring device for a transformer elbow joint.

[0021] Figure 3 The utility model is a schematic diagram of the fire extinguishing mechanism structure of a wireless temperature measuring device for a transformer elbow joint.

[0022] Figure 4 The utility model is a schematic diagram of the check valve structure of a wireless temperature measuring device for a transformer elbow joint.

[0023] In the figure: 1. Connector body; 2. Wireless temperature measuring device sensor; 3. Dry powder cylinder; 4. Threaded cap; 5. Air pump; 6. Inlet pipe; 7. Exhaust pipe; 8. Transport pipe; 9. Telescopic pipe; 10. Connecting flange; 11. Threaded outer wall; 12. Sealing gasket; 13. Ash filter plate; 14. Mounting seat; 15. Sealing inner tube; 16. Structural inner ring; 17. Rubber ring; 18. Extrusion plate; 19. Sealing spring; 20. Discharge chute. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] The utility model provides Figure 1-4 A wireless temperature measuring device for a transformer elbow joint is shown, comprising a joint body 1, the outer wall of which is movably plugged with a wireless temperature measuring device sensor 2, wherein the wireless temperature measuring device sensor 2 is a temperature main body detection component of the joint body 1, a dry powder cylinder 3 is arranged at the bottom of the joint body 1, wherein the dry powder cylinder 3 is a dry powder storage unit, and a threaded cap 4 is threadedly connected to the top of the dry powder cylinder 3, wherein the threaded cap 4 can cover and seal the top opening of the dry powder cylinder 3, an air pump 5 is installed on the outside of the dry powder cylinder 3, wherein the air pump 5 can inject air into the dry powder cylinder 3 when powered on, thereby making the dry powder rise and increasing the air pressure in the dry powder cylinder 3 to provide transportation power for the dry powder, and an air inlet pipe 6 is installed on the top of the air pump 5, wherein the air inlet pipe 6 is The air of the dry powder cylinder 3 enters the pipeline, and an exhaust pipe 7 is connected to the outside of the dry powder cylinder 3, wherein the exhaust pipe 7 is the exhaust pipe for the air and dry powder in the dry powder cylinder 3 to be discharged, and a transport pipe 8 is installed on one side of the exhaust pipe 7, and a mounting seat 14 is fixedly connected to the outer wall of the dry powder cylinder 3, wherein the mounting seat 14 provides mounting support for the inflation pump 5, and a sealed inner tube 15 is installed on the inner wall of the exhaust pipe 7, wherein the sealed inner tube 15 provides a shielding seal for the exhaust pipe 7, and a structural inner ring 16 is fixedly connected to the inner wall of the sealed inner tube 15, and an extrusion plate 18 is movably connected to the inside of the sealed inner tube 15, and a plurality of discharge grooves 20 are provided on the outer wall of the sealed inner tube 15, and the plurality of discharge grooves 20 are distributed in a ring shape on the outer wall of the sealed inner tube 15, wherein the plurality of discharge grooves 20 are the dry powder discharge positions.

[0026] A telescopic tube 9 is provided on the top of the transport tube 8 , wherein the use of the telescopic tube 9 allows the length and distance of the transport tube 8 to be freely adjusted, thereby facilitating the adjustment of the placement and installation of the dry powder cylinder 3 .

[0027] A connecting flange 10 is provided on one side of the exhaust pipe 7, wherein the connecting flange 10 is used for installation and connection of the exhaust pipe 7 and the transport pipe 8. This connection method ensures the sealing of the connection between the exhaust pipe 7 and the transport pipe 8 while facilitating subsequent disassembly by the user.

[0028] The outer wall of the dry powder tube 3 is provided with a threaded outer wall 11, and a sealing gasket 12 is installed inside the threaded cap 4, wherein the threaded outer wall 11 can be threadedly connected with the threaded groove on the inner wall of the threaded cap 4, thereby realizing the installation connection between the threaded cap 4 and the dry powder tube 3, and the sealing of the opening of the dry powder tube 3 is achieved by using the sealing gasket 12. At the same time, this connection method is convenient for the user to replenish the dry powder in the dry powder tube 3 later.

[0029] An ash filter plate 13 is installed on the inner wall of the air inlet pipe 6, wherein the ash filter plate 13 can block the air inlet pipe 6 to prevent the dry powder in the dry powder cartridge 3 from entering the air pump 5 and damaging the equipment.

[0030] A rubber ring 17 is installed on the outer side of the structural inner ring 16, wherein the rubber ring 17 is used to seal the exhaust pipe 7 by squeezing with the squeezing plate 18 to prevent the backflow of external air.

[0031] A sealing spring 19 is fixedly connected to one side of the extrusion plate 18 , wherein the sealing spring 19 provides sealing pressure for the extrusion plate 18 , thereby ensuring a non-return effect of the exhaust pipe 7 .

[0032] Working principle: During the use of the connector body 1, the wireless temperature measuring device sensor 2 detects the temperature inside the connector body 1 and is connected to the external intelligent temperature measuring collector and the alarm trigger mechanism. When the temperature inside the connector body 1 is too high and a fire occurs, the intelligent temperature measuring collector receives the signal transmitted by the wireless temperature measuring device sensor 2 to generate an alarm to remind the staff and the trigger mechanism provides power to the air pump 5. When the air pump 5 is powered on and started, the outside air will be continuously injected into the dry powder cylinder 3 through the air intake pipe 6 through the exhaust pipe. The airflow drives the dry powder in the cylinder to rise, and the dry powder cylinder 3 is in a sealed state, so that the air pressure increases to be greater than the outside atmospheric pressure until it can overcome the elastic force of the sealing spring 19 on the back of the extrusion plate 18 in the sealed inner tube 15, so that the extrusion plate 18 can be pushed to the rear side of the discharge trough 20, so that the air in the cylinder is mixed with the dry powder through the transport pipe 8 and the telescopic tube 9. In this way, the fire extinguishing function of a wireless temperature measuring device for a transformer elbow type connector is realized.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless temperature measuring device for a transformer elbow joint, comprising a joint body (1), characterized in that: The outer wall of the joint body (1) is movably connected with a wireless temperature measuring device sensor (2); a dry powder cartridge (3) is arranged at the bottom of the joint body (1); a threaded cap (4) is threadedly connected to the top of the dry powder cartridge (3); an air pump (5) is installed on the outside of the dry powder cartridge (3); an air intake pipe (6) is installed on the top of the air pump (5); an exhaust pipe (7) is penetrated and connected to the outside of the dry powder cartridge (3); a transport pipe (7) is installed on one side of the exhaust pipe (7). 8), the outer wall of the dry powder cylinder (3) is fixedly connected to a mounting seat (14), the inner wall of the exhaust pipe (7) is installed with a sealed inner tube (15), the inner wall of the sealed inner tube (15) is fixedly connected to a structural inner ring (16), the interior of the sealed inner tube (15) is movably connected to an extrusion plate (18), the outer wall of the sealed inner tube (15) is provided with a plurality of groups of discharge grooves (20), and the plurality of groups of the discharge grooves (20) are distributed in a ring shape on the outer wall of the sealed inner tube (15).

2. A transformer elbow joint wireless temperature measuring device according to claim 1, characterized in that: A telescopic tube (9) is arranged on the top of the transport tube (8).

3. A transformer elbow joint wireless temperature measuring device according to claim 1, characterized in that: A connecting flange (10) is provided on one side of the exhaust pipe (7).

4. A transformer elbow joint wireless temperature measuring device according to claim 1, characterized in that: The outer wall of the dry powder cartridge (3) is provided with a threaded outer wall (11), and a sealing gasket (12) is installed inside the threaded cap (4).

5. The wireless temperature measuring device for transformer elbow joint according to claim 1, characterized in that: An ash filter plate (13) is installed on the inner wall of the air inlet pipe (6).

6. A transformer elbow joint wireless temperature measurement device according to claim 1, characterized in that: A rubber ring (17) is installed on the outer side of the structural inner ring (16).

7. A transformer elbow joint wireless temperature measurement device according to claim 1, characterized in that: A sealing spring (19) is fixedly connected to one side of the extrusion plate (18).

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