High-temperature-resistant fastener

Abstract

The utility model belongs to the technical field of fasteners, and particularly relates to a high-temperature-resistant fastener which is characterized in that a cooling assembly is arranged on a bolt, the cooling assembly is used for cooling the bolt, circular notches are formed in the two ends of the bolt, a cooling through hole penetrating through the two circular notches is formed in the middle of the bolt, and the cooling through hole is used for cooling the bolt. The diameter of the cooling through hole is smaller than that of the circular notch, the cooling assembly comprises a first air guide pipe and a second air guide pipe which are connected to the two ends of the circular notch, and the first air guide pipe and the second air guide pipe are attached to the inner wall of the circular notch. When the bolt is used in a high-temperature environment, the high-temperature-resistant effect of the bolt is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and in particular relates to a high temperature resistant fastener. Background Art

[0002] During the use of fasteners, the temperature is sometimes very high. Under the operation of high-temperature fasteners, it is easy to damage the performance of the fasteners and even cause some faults. For example, bolts are important connectors widely used in boilers, turbines and steam pipe valves in high-capacity thermal power plants. Chinese patent publication number CN216691775U discloses a fastener with high-temperature resistance, which relates to the field of fasteners, including a bolt body, one end of the bolt body is fixedly connected with a nut, and the other end of the bolt body is provided with a nut. The bolt body is divided into an inner layer and a protective layer, a cooling cavity is provided on one side of the inner layer, and an air inlet interconnected with the cooling cavity is provided on one side surface of the nut. The protective layer includes a high-temperature resistant layer and a waterproof layer. The high-temperature resistant fasteners in the prior art are made of multiple layers, which makes the production cost of the fasteners relatively high. For this reason, we propose a high-temperature resistant fastener with a simple structure and low production cost. Utility Model Content

[0003] The utility model aims to provide a high temperature resistant fastener which has a simple structure, low production cost and good high temperature resistant effect.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A high temperature resistant fastener comprises a bolt and a nut. A cooling component is provided on the bolt, and the cooling component is used to cool the bolt.

[0006] Preferably, the bolt has circular notches at both ends, and a cooling through hole penetrating the two circular notches is opened in the middle of the bolt, and the diameter of the cooling through hole is smaller than the diameter of the circular notch.

[0007] Preferably, the cooling component is a first air duct and a second air duct connected to two ends of the circular notch, and the first air duct and the second air duct are respectively in contact with the inner wall of the circular notch.

[0008] Preferably, the cooling component is a liquid guide tube inserted into the circular groove, one end of the liquid guide tube is connected to a fixing ring, the fixing ring and the inner wall of the circular groove are in contact with each other, the other end of the liquid guide tube is located in the cooling through hole, and the other ends of the liquid guide tube are in contact with each other.

[0009] Preferably, a first rubber pad is provided on the other side wall of the fixing ring, and the first rubber pad is located inside the circular notch.

[0010] Preferably, one end of the bolt is fixedly connected to a threaded tube, and the external thread size of the threaded tube is the same as the thread size of the bolt.

[0011] Preferably, a connector is threadedly connected to the external thread of the threaded pipe and the external thread of the bolt end, a liquid pipe joint is movably provided inside the connector, a second rubber pad is provided on the side wall of the liquid pipe joint, and the side wall of the second rubber pad is tightly fitted with the side wall of the first rubber pad.

[0012] Preferably, the fixing ring and the liquid guiding tube are made of stainless steel, and a rubber ring is provided between the contact ends of the two liquid guiding tubes.

[0013] The technical effects achieved by the utility model are:

[0014] The utility model discloses a high temperature resistant fastener, which directly opens a circular notch and a cooling through hole in the middle of a bolt, and directly uses the cooling through hole and the circular notch to increase the contact area with the outside air while ensuring the rigidity of the bolt, thereby achieving cooling, so that the fastener has a high temperature resistant effect.

[0015] The utility model provides a high temperature resistant fastener, and two air ducts can be installed at both ends of the circular notch, wherein the first air duct is connected to the main air outlet duct of the fan, and the air from the fan flows into the first air duct connected thereto through the main air duct, and then the air enters and exits the second air duct from the cooling through hole, and then blows out from the second air duct, so that the bolt is cooled by air flow, and the fastener has a better high temperature resistance effect.

[0016] A high temperature resistant fastener of the utility model can also, after the bolt is fastened with the nut, first insert the two liquid guide tubes into the cooling through holes from the circular notches at both ends of the bolt, then place the two first rubber pads inside the circular notches, and then screw a connector on the external thread of the threaded tube and the external thread of the end of the bolt, so that the liquid pipe joint inside the connector squeezes the second rubber pad, so that the side wall of the second rubber pad fits tightly with the side wall of the first rubber pad, and at the same time squeezes the two liquid guide tubes, so that the ends of the two liquid guide tubes fit tightly with the rubber ring. After the installation is completed, when cooling, liquid water enters the two liquid guide tubes from the liquid pipe joint and then flows out from the other liquid pipe joint, so that the bolt is cooled by liquid water, and the cooling effect of the bolt is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the first embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the second embodiment of the utility model;

[0019] Figure 3This is a schematic diagram of the overall structure of the third embodiment of the present utility model;

[0020] Figure 4 It is a cross-sectional structural schematic diagram of the third embodiment of the utility model;

[0021] Figure 5 This utility model Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Bolt; 2. Nut; 3. Cooling assembly; 101. Circular notch; 102. Cooling through hole; 103. Threaded pipe; 301. First air duct; 302. Second air duct; 303. Liquid duct; 304. Fixing ring; 305. First rubber pad; 306. Connector; 307. Liquid pipe joint; 308. Second rubber pad; 309. Rubber ring; DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0025] Embodiment 1:

[0026] like Figure 1 As shown, a high temperature resistant fastener comprises a bolt 1 and a nut 2. The bolt 1 is provided with a cooling component 3, and the cooling component 3 is used to cool the bolt 1.

[0027] Preferably, the bolt 1 has circular notches 101 at both ends, and a cooling through hole 102 penetrating the two circular notches 101 is opened in the middle of the bolt 1 , and the diameter of the cooling through hole 102 is smaller than the diameter of the circular notch 101 .

[0028] In this embodiment, a circular notch 101 and a cooling through hole 102 are directly opened in the middle of the bolt 1. While ensuring the rigidity of the bolt 1, the cooling through hole 102 and the circular notch 101 are directly used to increase the contact area with the outside air, thereby achieving cooling, so that the fastener has a high temperature resistance effect.

[0029] Embodiment 2:

[0030] like Figure 2As shown, as a preferred embodiment, the cooling component 3 is a first air duct 301 and a second air duct 302 connected at both ends of the circular slot 101, and the first air duct 301 and the second air duct 302 are respectively in contact with the inner wall of the circular slot 101.

[0031] In this embodiment, based on the first embodiment, two air ducts are installed at both ends of the circular slot 101, wherein the first air duct 301 is connected to the main air outlet duct of the fan, and the air from the fan flows into the first air duct 301 connected thereto through the main branch pipes, and then the air enters and exits the second air duct 302 from the cooling hole 102, and is then blown out from the second air duct 302, so that the bolt 1 is cooled by the air flow, so that the fastener has a better high temperature resistance effect.

[0032] Embodiment three:

[0033] like Figure 3-5 As shown, as another preferred embodiment, based on the first embodiment and different from the second embodiment, the cooling component 3 is a liquid guide tube 303 inserted into the circular notch 101, one end of the liquid guide tube 303 is connected to a fixing ring 304, the fixing ring 304 and the inner wall of the circular notch 101 are mutually fitted, the other end of the liquid guide tube 303 is located in the cooling through hole 102, and the other ends of the liquid guide tube 303 are mutually fitted; a first rubber pad 305 is provided on the other side wall of the fixing ring 304, and the first rubber pad 305 is located inside the circular notch 101; the screw One end of the bolt 1 is fixedly connected to a threaded tube 103, and the external thread size of the threaded tube 103 is the same as the thread size of the bolt 1; a connector 306 is threadedly connected to the external thread of the threaded tube 103 and the external thread of the end of the bolt 1, and a liquid pipe joint 307 is movably provided inside the connector 306, and a second rubber pad 308 is provided on the side wall of the liquid pipe joint 307, and the side wall of the second rubber pad 308 is tightly fitted with the side wall of the first rubber pad 305; the fixing ring 304 and the liquid guide tube 303 are made of stainless steel, and a rubber ring 309 is provided between the contact ends of the two liquid guide tubes 303.

[0034] This embodiment is based on the first embodiment. In actual use, after the bolt 1 is fastened with the nut 2, the two liquid guide tubes 303 are respectively inserted into the cooling through hole 102 from the circular notches 101 at both ends of the bolt 1, and then the two first rubber pads 305 are placed inside the circular notches 101. Then, the connector 306 is screwed on the external thread of the threaded tube 103 and the external thread of the end of the bolt 1, so that the liquid pipe joint 307 inside the connector 306 squeezes the second rubber pad 308, so that the side wall of the second rubber pad 308 is closely fitted with the side wall of the first rubber pad 305, and at the same time, the two liquid guide tubes 303 are squeezed, so that the ends of the two liquid guide tubes 303 are closely fitted with the rubber ring 309. After the installation is completed, when cooling is performed, liquid water enters the two liquid guide tubes 303 from the liquid pipe joint 307, and then flows out from the other liquid pipe joint 307, so that the bolt 1 is cooled by liquid water, and the cooling effect of the bolt 1 is greatly improved.

[0035] It should be noted that since the fixing ring 304 and the liquid guide tube 303 are made of stainless steel, and the side wall of the second rubber pad 308 is tightly fitted with the side wall of the first rubber pad 305, and the ends of the two liquid guide tubes 303 are tightly fitted with the rubber ring 309, the sealing effect is greatly improved, and ultimately liquid water will not contact the bolt 1, ensuring that the bolt 1 will not be corroded, thereby increasing the service life of the bolt 1.

[0036] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A high temperature resistant fastener, comprising a bolt (1) and a nut (2), characterized in that: The bolt (1) is provided with a cooling component (3), and the cooling component (3) is used to cool the bolt (1); Circular notches (101) are provided at both ends of the bolt (1); a cooling through hole (102) penetrating the two circular notches (101) is provided in the middle of the bolt (1); the diameter of the cooling through hole (102) is smaller than the diameter of the circular notch (101); The cooling component (3) is a first air duct (301) and a second air duct (302) connected to the two ends of the circular notch (101); the first air duct (301) and the second air duct (302) are respectively in contact with the inner wall of the circular notch (101); Alternatively, the cooling component (3) is a liquid guide tube (303) inserted into the circular notch (101); one end of the liquid guide tube (303) is connected to a fixing ring (304); the fixing ring (304) and the inner wall of the circular notch (101) are in contact with each other; the other end of the liquid guide tube (303) is located in the cooling through hole (102); and the other ends of the liquid guide tube (303) are in contact with each other.

2. A high temperature resistant fastener according to claim 1, characterized in that: A first rubber pad (305) is provided on the other side wall of the fixing ring (304), and the first rubber pad (305) is located inside the circular notch (101).

3. A high temperature resistant fastener according to claim 2, characterized in that: One end of the bolt (1) is fixedly connected to a threaded tube (103), and the external thread size of the threaded tube (103) is the same as the thread size of the bolt (1).

4. A high temperature resistant fastener according to claim 3, characterized in that: A connector (306) is threadedly connected to the external thread of the threaded pipe (103) and the external thread of the end of the bolt (1); a liquid pipe joint (307) is movably provided inside the connector (306); a second rubber pad (308) is provided on the side wall of the liquid pipe joint (307); and the side wall of the second rubber pad (308) is tightly fitted with the side wall of the first rubber pad (305).

5. A high temperature resistant fastener according to claim 1, characterized in that: The fixing ring (304) and the liquid guiding tube (303) are made of stainless steel, and a rubber ring (309) is provided between the contact ends of the two liquid guiding tubes (303).

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