An intermediate joint

Abstract

This utility model discloses an intermediate connector, which includes: a housing, a pressure relief valve, a fire extinguishing module, a temperature monitoring module, a vibration sensing module, a smoke sensing module, a water immersion monitoring module, and a product status monitoring module. The housing has a mounting cavity for installing the intermediate connector; the pressure relief valve is located in the housing and can connect the mounting cavity to the outside; the fire extinguishing module is located in the housing and inside the mounting cavity; the temperature monitoring module is located inside the mounting cavity and is used to detect the temperature of the intermediate connector; the vibration sensing module is located inside the mounting cavity and is used to detect the vibration of the intermediate connector; the smoke sensing module is located inside the mounting cavity and is used to detect the smoke inside the mounting cavity; the water immersion monitoring module is located at the bottom of the mounting cavity and is used to detect the water inside the mounting cavity; the product status monitoring module is located inside the mounting cavity and is electrically connected to the fire extinguishing module, the temperature monitoring module, the vibration sensing module, the smoke sensing module, and the water immersion monitoring module to detect the status of the intermediate connector.

Description

Technical Field

[0001] This utility model relates to the field of cable accessories technology, and in particular to an intermediate joint. Background Technology

[0002] According to relevant surveys, electrical fires have become the leading cause of fire accidents in my country in recent years, and the number remains high, showing a year-on-year increase. Electrical fires have become a major source of various fire hazards in my country. With the rapid development of the national economy, the use of electrical cables in power grids is becoming increasingly widespread. More and more cables are concentrated in cable trenches, cable wells, or laid side-by-side underground. Due to the limited length of a single cable, one or more joints are usually needed on a line to extend its length and meet power supply requirements. During operation, if a joint explodes, even a single spark could ignite the entire cable trench, causing huge economic losses and even threatening personal safety. Furthermore, current joint protection boxes lack monitoring capabilities for joints, making it impossible to obtain real-time operational information. Even if a product malfunctions, the location of the fault cannot be obtained promptly. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an intermediate joint that can improve the operational reliability of the intermediate joint.

[0004] The intermediate joint according to an embodiment of the present invention includes:

[0005] The housing has a mounting cavity for mounting an intermediate joint;

[0006] A pressure relief valve is located in the housing and is capable of connecting the mounting cavity to the outside.

[0007] The fire extinguishing module is disposed in the outer shell and located within the mounting cavity;

[0008] A temperature monitoring module is located inside the mounting cavity and is used to detect the temperature of the intermediate joint;

[0009] A vibration sensing module is disposed inside the mounting cavity and is used to detect the vibration of the intermediate joint;

[0010] A smoke sensing module is disposed inside the mounting cavity and is used to detect smoke inside the mounting cavity;

[0011] A water immersion monitoring module is located at the bottom of the mounting cavity and is used to detect the water inside the mounting cavity;

[0012] The product status monitoring module is located inside the mounting cavity and is electrically connected to the fire extinguishing module, the temperature monitoring module, the vibration sensing module, the smoke sensing module, and the water immersion monitoring module to detect the status of the intermediate joint.

[0013] The intermediate joint according to the embodiments of this utility model has at least the following beneficial effects: the intermediate joint is actively protected by each module; when water enters the intermediate joint to a certain level that may cause a short circuit, an alarm is triggered in time, which makes it convenient for managers to handle the intermediate joint as appropriate; when the temperature, smoke, and vibration of the intermediate joint exceed preset values, the fire extinguishing module can actively extinguish the fire, thereby achieving intelligent fire prevention, reducing the probability of fire, and improving the operational reliability of the intermediate joint.

[0014] According to some embodiments of the present invention, the outer shell includes an upper shell and a lower shell. The upper shell includes an upper housing and a first connecting portion. The upper housing has a first opposing surface relative to the lower shell, and the first connecting portion is disposed on the first opposing surface. The lower shell includes a lower housing and a second connecting portion. The lower housing has a second opposing surface relative to the upper shell, and the second connecting portion is disposed on the second opposing surface.

[0015] According to some embodiments of the present invention, the first connecting portion includes one of a first groove and a first protrusion, and the second connecting portion includes the other of a first groove and a first protrusion;

[0016] The first groove includes a groove opening and a groove bottom surface, wherein the projected area from the groove opening to the groove bottom surface is smaller than the bottom area of ​​the groove bottom surface.

[0017] According to some embodiments of the present invention, the upper shell and the lower shell are locked together by fasteners.

[0018] According to some embodiments of the present invention, the outer casing further includes a first sealing layer and a second sealing layer, wherein the first sealing layer, the first connecting portion and the second sealing layer are arranged sequentially along the radial direction of the outer casing.

[0019] According to some embodiments of the present invention, the first connecting portion has a dovetail-shaped cross-section along the radial direction of the outer shell.

[0020] According to some embodiments of this utility model, it also includes: a product status monitoring device;

[0021] The product status monitoring device is located outside the housing and is electrically connected to the product status monitoring module.

[0022] According to some embodiments of the present invention, it also includes: a wireless signal device;

[0023] The wireless signal transmitter is electrically connected to the product status monitoring device to transmit the result signal after monitoring by the product status monitoring module.

[0024] According to some embodiments of this utility model, the product status monitoring device is located on the ground.

[0025] According to some embodiments of the present invention, the pressure relief valve is fastened to the housing.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 This is a structural schematic diagram of the intermediate joint of an embodiment of the present invention from a first perspective;

[0029] Figure 2 This is a cross-sectional structural diagram of the intermediate joint from a first perspective according to an embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional structural diagram of the intermediate joint from a second perspective according to an embodiment of the present invention;

[0031] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0032] Figure 5 This is a cross-sectional exploded view of the intermediate joint of one embodiment of the present invention from a second perspective.

[0033] Icon labels:

[0034] Outer shell 100; Upper shell 110; First connecting part 120; Lower shell 130; Second connecting part 140; Fastener 150; First sealing layer 160; Second sealing layer 170;

[0035] Pressure relief valve 200;

[0036] Fire extinguishing module 300;

[0037] Temperature monitoring module 400;

[0038] Vibration sensing module 500;

[0039] Smoke detection module 600;

[0040] 700 water immersion monitoring module;

[0041] Product status monitoring module 800;

[0042] Product status monitoring device 900;

[0043] Wireless signal transmitter A00. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, "several" refers to one or more, and "multiple" refers to two or more. The use of "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0047] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0048] Reference Figures 1 to 5 As shown in the figure, this utility model embodiment proposes an intermediate joint, which includes: a housing 100, a pressure relief valve 200, a fire extinguishing module 300, a temperature monitoring module 400, a vibration sensing module 500, a smoke sensing module 600, a water immersion monitoring module 700, and a product status monitoring module 800.

[0049] The housing 100 has a mounting cavity for installing an intermediate connector. The housing 100 serves to fix and seal the intermediate connector. The two ends of the intermediate connector are connected to the cable. The housing 100 will clamp the two ends of the intermediate connector or the cable and keep them sealed with the cable at the clamping position. The housing 100 has a bottom support inside the mounting cavity. The intermediate connector is placed on the bottom support, so that the intermediate connector is basically spaced from the inner circumferential surface of the mounting cavity.

[0050] The pressure relief valve 200 is located in the housing 100 and connects the mounting cavity to the outside. The pressure relief valve 200 automatically connects the mounting cavity to the external environment under a preset pressure, thereby releasing excessive pressure from the mounting cavity to the external environment and effectively preventing the possibility of explosion due to excessive pressure. The preset pressure is greater than atmospheric pressure; therefore, under normal atmospheric pressure, the pressure relief valve 200 remains normally closed to isolate the housing 100 from the external environment, thus ensuring the sealing environment of the intermediate joint.

[0051] The fire extinguishing module 300 is located in the housing 100 and within the mounting cavity. The fire extinguishing module 300 has an active fire extinguishing function. When it receives a designated signal, the fire extinguishing module 300 performs active fire extinguishing. The fire extinguishing module 300 generally uses dry powder fire extinguishing.

[0052] The temperature monitoring module 400 is located inside the mounting cavity and is used to detect the temperature of the intermediate joint. The temperature monitoring module 400 is generally attached to the surface of the intermediate joint to determine the temperature of the intermediate joint. As another embodiment, the temperature monitoring module 400 can also be located in the interval area of ​​the mounting cavity or on the housing 100.

[0053] The vibration sensing module 500 is located inside the mounting cavity and is used to detect the vibration of the intermediate joint. The vibration sensing module 500 is also located on the surface of the intermediate joint to detect the vibration of the intermediate joint. When the vibration amplitude exceeds a certain value, an alarm will be triggered, and the fire extinguishing module 300 will actively extinguish the fire. The causes of changes in vibration amplitude include, but are not limited to: human movement, earthquakes, and explosion vibrations (explosions of other components).

[0054] The smoke detection module 600 is located inside the installation cavity and is used to detect smoke inside the installation cavity. Because smoke is relatively light, it generally rises. The smoke detection module 600 is located at the top of the installation cavity to detect the smoke at the top in a timely manner. When the smoke concentration reaches a certain value, the smoke detection module 600 will sound an alarm, and the fire extinguishing module 300 will actively extinguish the fire to prevent it from happening.

[0055] The water immersion monitoring module 700 is located at the bottom of the mounting cavity and is used to detect the water inside the mounting cavity. Because the water will concentrate at the bottom of the mounting cavity, the real-time water level inside the mounting cavity can be monitored in a timely manner when the water immersion monitoring module 700 is located at the bottom of the mounting cavity. When the real-time water level exceeds the preset water level, the water immersion monitoring module 700 will alarm, and with the cooperation of other modules, the alarm signal can be sent to the management terminal. The management personnel of the management terminal should promptly arrange for staff to maintain the intermediate joint and drain the water accumulated inside the outer casing 100.

[0056] The product status monitoring module 800 is located inside the installation cavity and is electrically connected to the fire extinguishing module 300, temperature monitoring module 400, vibration sensing module 500, smoke sensing module 600, and water immersion monitoring module 700 to detect the status of the intermediate joint. The product status monitoring module 800 is uniformly connected to the fire extinguishing module 300, temperature monitoring module 400, vibration sensing module 500, smoke sensing module 600, and water immersion monitoring module 700, and receives signals from modules other than the fire extinguishing module 300. Based on the specific signal requirements, it executes relevant actions. For example, if the temperature monitoring module 400 alarms, the product status monitoring module 800 receives the alarm signal and then, through other modules, sends a fire extinguishing signal to the fire extinguishing module 300, which then actively performs fire extinguishing.

[0057] It is worth noting that the intermediate joint is actively protected by various modules. When water enters the intermediate joint and reaches a certain level that may cause a short circuit, an alarm is triggered in time, making it convenient for managers to handle the intermediate joint as needed. When the temperature, smoke, or vibration of the intermediate joint exceeds preset values, the fire extinguishing module 300 can actively extinguish the fire, achieving intelligent fire prevention, reducing the probability of fire, and improving the operational reliability of the intermediate joint.

[0058] Reference Figure 3 , Figure 4 and Figure 5 As shown, in some specific embodiments of this utility model, the outer shell 100 includes an upper shell and a lower shell. The upper shell includes an upper housing 110 and a first connecting portion 120. The upper housing 110 has a first opposing surface relative to the lower shell, and the first connecting portion 120 is disposed on the first opposing surface. The lower shell includes a lower housing 130 and a second connecting portion 140. The lower housing 130 has a second opposing surface relative to the upper shell, and the second connecting portion 140 is disposed on the second opposing surface.

[0059] In this embodiment, the upper shell and lower shell are assembled according to the installation method of the first connecting part 120 and the second connecting part 140, so that the first connecting part 120 and the second connecting part 140 are connected, realizing the pre-fixation of the upper shell and the lower shell. The connection between the upper shell and the lower shell will be more compact, making it less likely for the upper shell and the lower shell to separate. The first connecting part 120 and the second connecting part 140 are assembled along the axial direction of the outer shell 100. After assembly, the upper shell and the lower shell will mainly move along the axial direction of the outer shell 100. The movement of the upper shell and the lower shell in other directions is restricted by the first connecting part 120 and the second connecting part 140, making it difficult to move. After the upper shell and the lower shell are fixed along the axial direction of the outer shell 100, the upper shell and the lower shell are completely fixed, and the outer shell 100 will also be in a fixed state at this time.

[0060] Reference Figure 3 , Figure 4 and Figure 5As shown, in some specific embodiments of this utility model, the first connecting part 120 includes one of a first groove and a first protrusion, and the second connecting part 140 includes the other of a first groove and a first protrusion; wherein, the first groove includes a groove opening and a groove bottom surface, and the projected area from the groove opening to the groove bottom surface is smaller than the bottom area of ​​the groove bottom surface.

[0061] In this embodiment, the first connecting part 120 includes a first groove, and the second connecting part 140 includes a first protrusion. The first groove and the first protrusion are assembled along the axial direction of the outer shell 100 to realize the connection between the first connecting part 120 and the second connecting part 140. The projected area of ​​the groove opening in the first groove is smaller than the bottom area of ​​the groove bottom. In other words, the groove opening is smaller than the groove bottom. When the first protrusion is inserted into the first groove, it will be difficult to dislodge from the first groove along the groove depth direction.

[0062] Reference Figure 3 , Figure 4 and Figure 5 As shown, in some specific embodiments of this utility model, the upper shell and the lower shell are locked together by fasteners 150.

[0063] It is worth understanding that the upper and lower shells are locked together by fasteners 150 to limit the movement of the upper and lower shells along the axial direction of the outer shell 100, thereby completely fixing the outer shell 100 and achieving a tight seal, making it more reliable in use.

[0064] Reference Figure 3 , Figure 4 and Figure 5 As shown, in some specific embodiments of this utility model, the outer shell 100 further includes a first sealing layer 160 and a second sealing layer 170, and the first sealing layer 160, the first connecting portion 120 and the second sealing layer 170 are arranged sequentially along the radial direction of the outer shell 100.

[0065] In this embodiment, the first sealing layer 160 and the second sealing layer 170 seal the gap between the upper and lower shells, thereby sealing the outer shell 100 and making it less prone to water ingress, thus preventing short circuits in the cables. The first sealing layer 160 and the second sealing layer 170 also clamp the first connecting portion 120, preventing water from passing through either the first sealing layer 160 or the second sealing layer 170.

[0066] Reference Figure 3 , Figure 4 and Figure 5As shown, in some specific embodiments of this utility model, the cross-section of the first connecting portion 120 along the radial direction of the outer shell 100 is dovetail-shaped. Here, "dovetail-shaped" means that the included angles between the two groove sidewalls and the bottom of the groove along the radial direction of the outer shell 100 are both acute angles. In this case, the groove sidewalls will restrict the protruding sidewalls, making it more difficult for the groove sidewalls to disengage from the first groove along the groove depth direction. The connection between the first connecting portion 120 and the second connecting portion 140 is more reliable.

[0067] Reference Figure 1 As shown, in some specific embodiments of this utility model, the intermediate connector further includes: a product status monitoring device 900; the product status monitoring device 900 is disposed outside the housing 100 and electrically connected to the product status monitoring module 800.

[0068] It is understandable that the product status monitoring device 900 is located outside the housing 100, which facilitates maintenance by personnel and allows for real-time monitoring of the intermediate joint's status. Furthermore, the product status monitoring device 900 is in a safer and more reliable position. In this embodiment, the product status monitoring device 900 directly controls the various modules within the intermediate joint through the product status monitoring module 800. For example, when the product status monitoring module 800 receives temperature, smoke, or vibration alarms, it sends a signal to the fire extinguishing module 300, causing the fire extinguishing module 300 to actively extinguish the fire.

[0069] Reference Figure 1 As shown, in some specific embodiments of this utility model, the intermediate connector further includes: a wireless signal device A00; the wireless signal device A00 is electrically connected to the product status monitoring device 900 to send the result signal after monitoring by the product status monitoring module 800.

[0070] In this embodiment, when the product status monitoring module 800 receives a water level alarm, the product status monitoring device 900 will transmit a wireless signal to the manager's control terminal via the wireless signal transmitter A00, allowing the manager to promptly know the status of the intermediate connector and dispatch maintenance personnel for handling. Similarly, during the process of the product status monitoring module 800 sending a signal to the fire extinguishing module 300,

[0071] Reference Figure 1 As shown, in some specific embodiments of this utility model, the product status monitoring device 900 is located on the ground.

[0072] In this embodiment, the product status monitoring device 900 is directly installed on the ground, while the intermediate joint is generally installed at a higher position. Workers can monitor the intermediate joint through the product status monitoring device 900 without having to climb to the installation position of the intermediate joint, making it more convenient for workers to monitor the intermediate joint.

[0073] In some specific embodiments of this utility model, the pressure relief valve 200 is fastened to the outer casing 100.

[0074] It is understandable that the pressure relief valve 200 is installed on the housing 100 by a snap-fit ​​method, which makes the installation of the pressure relief valve 200 more convenient. After the pressure relief valve 200 is snap-fitted and installed, the pressure relief valve 200 will be in a pre-positioned state. The pressure relief valve 200 can be locked by the bolt fastener 150, making the fixation of the pressure relief valve 200 more reliable. The pre-positioned pressure relief valve 200 is also more convenient to be tightened by the bolt fastener 150, making the installation more convenient.

[0075] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An intermediate joint, characterized in that, include: The housing has a mounting cavity for mounting an intermediate joint; A pressure relief valve is located in the housing and is capable of connecting the mounting cavity to the outside. The fire extinguishing module is disposed in the outer shell and located within the mounting cavity; A temperature monitoring module is located inside the mounting cavity and is used to detect the temperature of the intermediate joint; A vibration sensing module is disposed inside the mounting cavity and is used to detect the vibration of the intermediate joint; A smoke sensing module is disposed inside the mounting cavity and is used to detect smoke inside the mounting cavity; A water immersion monitoring module is located at the bottom of the mounting cavity and is used to detect the water inside the mounting cavity; The product status monitoring module is located inside the mounting cavity and is electrically connected to the fire extinguishing module, the temperature monitoring module, the vibration sensing module, the smoke sensing module, and the water immersion monitoring module to detect the status of the intermediate joint.

2. The intermediate joint of claim 1, wherein: The outer shell includes an upper shell and a lower shell. The upper shell includes an upper housing and a first connecting portion. The upper housing has a first opposing surface relative to the lower shell. The first connecting portion is disposed on the first opposing surface. The lower shell includes a lower housing and a second connecting portion. The lower housing has a second opposing surface relative to the upper shell. The second connecting portion is disposed on the second opposing surface.

3. The intermediate joint of claim 2, wherein: The first connecting portion includes one of a first groove and a first protrusion, and the second connecting portion includes the other of a first groove and a first protrusion; The first groove includes a groove opening and a groove bottom surface, wherein the projected area from the groove opening to the groove bottom surface is smaller than the bottom area of ​​the groove bottom surface.

4. The intermediate joint of claim 2, wherein: The upper shell and the lower shell are locked together by fasteners.

5. The intermediate joint of claim 2, wherein: The outer casing also includes a first sealing layer and a second sealing layer, which are arranged sequentially along the radial direction of the outer casing.

6. The intermediate joint of claim 3, wherein: The first connecting portion has a dovetail-shaped cross-section along the radial direction of the outer shell.

7. The intermediate joint of claim 1, wherein, Also includes: Product status monitoring device; The product status monitoring device is located outside the housing and is electrically connected to the fire extinguishing module, the temperature monitoring module, the vibration sensing module, the smoke sensing module, the water immersion monitoring module, and the product status monitoring module.

8. The intermediate joint of claim 7, wherein, Also includes: Wireless signal transmitter; The wireless signal transmitter is electrically connected to the product status monitoring device to transmit the result signal after monitoring by the product status monitoring module.

9. The intermediate joint of claim 7, wherein: The product status monitoring device is located on the ground.

10. The intermediate joint of claim 1, wherein: The pressure relief valve is fastened to the housing.

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