Vertical high-pressure furnace body with screw fastening structure

Abstract

The utility model discloses a vertical high-pressure furnace body with a screw fastening structure, which comprises a cylinder body and sealing flat covers arranged at two ends of the cylinder body, a cooling jacket is arranged on the outer wall of the cylinder body, a plurality of annular plates are arranged on the cylinder body at intervals up and down, and the cooling jacket is divided into a plurality of cooling subareas by the annular plates. An annular gland is arranged on the outer side of each sealing flat cover, the two annular glands are connected and fixed through a plurality of fastening studs and fastening nuts, anti-loosening mechanisms are arranged at the two ends of each fastening stud, each anti-loosening mechanism comprises an anti-loosening bolt and a connecting rod, a threaded hole is machined in the end of each fastening stud, and the connecting rods are connected with the threaded holes. The screwing direction of the threaded hole is opposite to that of the fastening stud, a positioning rod is hinged to the connecting rod, a spring is arranged between the connecting rod and the positioning rod, and a plurality of positioning holes matched with the positioning rod are evenly machined in the periphery of the edge of the fastening nut. In conclusion, the screw has the advantages of being long in service life, capable of effectively preventing the screw from loosening, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of vertical high-pressure furnace body technology, specifically to a vertical high-pressure furnace body with a screw fastening structure. Background Technology

[0002] The screw-fastened high-pressure furnace body is a special high-pressure vessel design that uses a high-strength screw system to seal and connect pressure-bearing components. It is a sealed container that can operate stably under high temperature and high pressure environments and is widely used in chemical, material synthesis, energy, scientific research and other fields. Its core feature is that it uses a precision pre-tightened screw group to maintain the structural integrity and sealing performance of the furnace body under high pressure and high temperature conditions.

[0003] Currently, high-pressure furnace bodies with screw-fastened structures often suffer from the following problems during operation: First, the equipment cylinder operates in a high-temperature environment for extended periods, which reduces its yield strength and elastic modulus, potentially leading to deformation. Simultaneously, the material undergoes slow plastic deformation, especially in stress concentration areas, undoubtedly reducing the equipment's service life. Even with cooling structures, the cooling effect is often inadequate. Second, during long-term use, the screw nuts within the equipment may loosen, causing leakage of the internal media and posing a significant safety hazard. Therefore, developing a high-pressure furnace body with a screw-fastened structure that boasts a long service life, effectively prevents screw loosening, and ensures safety and reliability is objectively necessary. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical high-pressure furnace body with a screw fastening structure that has a long service life, can effectively prevent screw loosening, and is safe and reliable.

[0005] The purpose of this utility model is achieved as follows: It includes a cylindrical body and sealing flat covers at both ends of the cylindrical body. A cooling jacket is provided on the outer wall of the cylindrical body. Multiple annular plates are spaced vertically on the cylindrical body, and fixing frames are provided on the annular plates. The multiple annular plates divide the cooling jacket into multiple cooling zones. Each cooling zone has a separate cooling medium inlet and outlet. An annular pressure cap is provided on the outer side of each sealing flat cover. Two annular pressure caps are connected and fixed by several fastening studs and fastening nuts. The fastening studs pass through the annular plates. Both ends of the fastening studs are provided with anti-loosening mechanisms. The anti-loosening mechanism includes an anti-loosening bolt and a connecting rod provided on the hexagonal head of the anti-loosening bolt. The end of the fastening stud is machined with a threaded hole, the direction of rotation of the threaded hole being opposite to the direction of rotation of the fastening stud. The anti-loosening bolt is screwed into the threaded hole, and the threaded end of the anti-loosening bolt abuts against the bottom of the threaded hole. A positioning rod is hinged to the connecting rod, and a spring is provided between the connecting rod and the positioning rod. Several positioning holes matching the positioning rod are uniformly machined around the edge of the fastening nut.

[0006] Furthermore, the fixing frame includes fixing plates symmetrically arranged on both sides of the cylinder. The fixing plates are fixedly connected to the ring plates. Each fixing plate is provided with a support plate. The lower part of two support plates is connected by a connecting plate. The bottom of the support plate is provided with a base.

[0007] Furthermore, the fastening stud is a double-ended stud with a threaded hole machined on the ring plate. An anti-moving bolt is screwed into the threaded hole, and the threaded end of the anti-moving bolt abuts against the smooth rod of the fastening stud.

[0008] Furthermore, a spiral guide plate is installed inside the cooling jacket.

[0009] Furthermore, one end of the spring is fixedly connected to the connecting rod, and the other end is equipped with a hook, while a positioning ring is provided on the positioning rod.

[0010] Furthermore, blind holes are machined on both end faces of the cylinder, and positioning pins corresponding to the blind holes are provided on the sealing flat cover.

[0011] The vertical high-pressure furnace body with a screw-fastening structure described in this utility model has the following beneficial effects: Firstly, a cooling jacket is set on the outer wall of the cylinder, and the cooling jacket is divided into sections using a ring plate. A segmented structure is adopted, dividing the cooling jacket into multiple cooling zones, each of which operates independently. Each cooling zone is circulated with a low-temperature cooling medium, ensuring that all parts of the cylinder receive adequate cooling, effectively reducing the operating temperature of the cylinder, decreasing the probability of cylinder deformation, and extending the service life of the cylinder. Secondly, an anti-loosening mechanism is provided to address the potential loosening of the fastening nut during use. This mechanism is located at the end of the fastening stud. During use, the fastening nut is screwed into the fastening stud as usual, and then the anti-loosening bolt is screwed into the threaded hole at the end of the fastening stud, so that the threaded end of the anti-loosening bolt abuts against the bottom of the threaded hole. The positioning rod is then rotated, causing it to engage with the positioning hole of the fastening nut. At this time, a spring tightens the positioning rod, preventing it from dislodging from the positioning hole. The anti-loosening principle is as follows: Since the anti-loosening bolt, connecting rod, positioning rod, and fastening nut are integrated into a single unit, and the direction of rotation of the threaded hole is opposite to that of the fastening stud, the direction in which the fastening nut is tightened onto the fastening stud is the direction in which the anti-loosening bolt is loosened within the threaded hole, and the direction in which the fastening nut loosens is the direction in which the anti-loosening bolt is tightened. During use, when the fastening nut tends to loosen, the loosening torque is transmitted to the anti-loosening bolt through the positioning rod and connecting rod. This torque causes the anti-loosening bolt to tend to tighten. However, because the threaded end of the anti-loosening bolt rests against the bottom of the threaded hole, the anti-loosening bolt... If the bolt cannot be turned and continues to tighten, the fastening nut will also be unable to turn, thus preventing the fastening nut from loosening. Conversely, when the anti-loosening bolt tends to loosen, the loosening torque is transmitted to the fastening nut through the connecting rod and positioning rod. This torque causes the fastening nut to tend to tighten, also preventing it from loosening. In summary, through the interaction of the anti-loosening bolt, connecting rod, positioning rod, and fastening nut, the fastening nut can be effectively prevented from loosening, thereby preventing leakage of the medium inside the equipment, improving the safety performance of the equipment during operation, and significantly reducing safety hazards at the equipment site. In conclusion, this utility model has the advantages of long service life, effective prevention of bolt loosening, and safety and reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a top view of the structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the anti-loosening mechanism in this utility model;

[0015] Figure 4This is a schematic diagram of the fastening nut 6 in this utility model;

[0016] Figure 5 for Figure 1 A magnified structural diagram of node A in the middle;

[0017] In the diagram: 1-Cylinder body, 2-Cooling jacket, 3-Ring plate, 4-Annular cover, 5-Fasting stud, 6-Fasting nut, 7-Anti-loosening bolt, 8-Connecting rod, 9-Positioning rod, 10-Spring, 11-Positioning hole, 12-Fixing plate, 13-Supporting plate, 14-Connecting plate, 15-Base, 16-Anti-moving bolt, 17-Spiral guide plate, 18-Positioning ring, 19-Positioning column, 20-Sealing flat cover, 21-Adjusting shim. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0019] like Figures 1-5 As shown, this utility model includes a cylindrical body 1 and sealing flat covers 20 disposed at both ends of the cylindrical body 1. The sealing flat covers 20 are sealed to both ends of the cylindrical body 1. A cooling jacket 2 is disposed on the outer wall of the cylindrical body 1. Multiple annular plates 3 are disposed vertically on the cylindrical body 1, and fixing frames are disposed on the annular plates 3. The multiple annular plates 3 divide the cooling jacket 2 into multiple cooling zones. Each cooling zone is provided with a separate cooling medium inlet and outlet. An annular pressure cap 4 is disposed on the outer side of each sealing flat cover 20. Two annular pressure caps 4 are connected and fixed by a number of fastening studs 5 and fastening nuts 6. In specific implementation, the annular pressure cap 4 can be square, and there can be 4 fastening studs 5, which are respectively disposed at the four corners of the annular pressure cap 4. The specific number can be determined according to the diameter of the cylindrical body 1. The parameters such as pressure are calculated and determined. Generally, to prevent loosening, two fastening nuts 6 are set at each end of the fastening stud 5. The fastening stud 5 passes through the ring plate 3. Both ends of the fastening stud 5 are equipped with anti-loosening mechanisms, which include anti-loosening bolts 7 and connecting rods 8 set on the hexagonal heads of the anti-loosening bolts 7. The end of the fastening stud 5 is machined with a threaded hole, and the threaded end of the anti-loosening bolt 7 abuts against the bottom of the threaded hole. The rotation direction of the threaded hole is opposite to that of the fastening stud 5. The anti-loosening bolt 7 is screwed into the threaded hole. A positioning rod 9 is hinged on the connecting rod 8. The positioning rod 9 can rotate up and down. A spring 10 is set between the connecting rod 8 and the positioning rod 9. Several positioning holes 11 that match the positioning rod 9 are evenly machined on the circumference of the edge of the fastening nut 6.

[0020] This invention provides a cooling jacket 2 on the outer wall of the cylinder 1, and uses a ring plate 3 to divide the cooling jacket 2 into sections. The segmented structure divides the cooling jacket 2 into multiple cooling sections, and each cooling section operates independently. The cooling medium introduced into each cooling section is at a low temperature, so that all parts of the cylinder 1 can be cooled well, resulting in a good cooling effect. This can effectively reduce the operating temperature of the cylinder 1, reduce the probability of deformation of the cylinder 1, and improve the service life of the cylinder 1.

[0021] To address the potential loosening of the fastening nut 6 during use, an anti-loosening mechanism is installed at the end of the fastening stud 5. During use, the fastening nut 6 is screwed into the fastening stud 5 using the existing method to secure the furnace body. Then, the anti-loosening bolt 7 is screwed into the threaded hole at the end of the fastening stud 5, with the threaded end of the anti-loosening bolt 7 abutting against the bottom of the threaded hole. The positioning rod 9 is then rotated, causing it to engage with the positioning hole 11 of the fastening nut 6. At this point, the spring 10 tightens the positioning rod 9, preventing it from dislodging from the positioning hole 11. The anti-loosening principle is as follows: Since the anti-loosening bolt 7, connecting rod 8, positioning rod 9, and fastening nut 6 are connected as a whole, and the direction of rotation of the threaded hole is opposite to that of the fastening stud 5, that is, the direction in which the fastening nut 6 is tightened on the fastening stud 5 is the direction in which the anti-loosening bolt 7 is loosened in the threaded hole, and the direction in which the fastening nut 6 is loosened is the direction in which the anti-loosening bolt 7 is tightened. During use, when the fastening nut 6 has a tendency to loosen, the loosening torque is transmitted to the anti-loosening bolt 7 through the positioning rod 9 and connecting rod 8. This torque makes the anti-loosening bolt 7 tend to tighten, but since the threaded end of the anti-loosening bolt 7 is against the bottom of the threaded hole, the anti-loosening bolt 7 cannot rotate. If the anti-loosening bolt 7 continues to tighten, the fastening nut 6 will not be able to rotate, thus preventing the fastening nut 6 from loosening. Conversely, when the anti-loosening bolt 7 tends to loosen, the loosening torque is transmitted to the fastening nut 6 through the connecting rod 8 and the positioning rod 9. This torque makes the fastening nut 6 tend to tighten, which also prevents the fastening nut 6 from loosening. In short, through the interaction of the anti-loosening bolt 7, the connecting rod 8, the positioning rod 9 and the fastening nut 6, the fastening nut 6 will not loosen, thus effectively preventing the loosening of the fastening nut 6, preventing the leakage of the medium inside the equipment, improving the safety performance of the equipment during operation, and greatly reducing the safety hazards at the equipment site.

[0022] The fixing frame includes fixing plates 12 symmetrically arranged on both sides of the cylinder 1. The fixing plates 12 are fixedly connected to the ring plate 3. Each fixing plate 12 is provided with a support plate 13. The lower part of two support plates 13 is connected by a connecting plate 14. A base 15 is provided at the bottom of the support plate 13. The fixing frame is used to support and fix the entire furnace body. In specific implementation, other structural forms can also be selected, as long as they can provide good support and fixation for the entire furnace body.

[0023] The fastening stud 5 is a double-ended stud. A threaded hole is machined on the ring plate 3, and an anti-moving bolt 16 is screwed into the threaded hole. The threaded end of the anti-moving bolt 16 abuts against the smooth rod of the fastening stud 5. The anti-moving bolt 16 is provided to prevent the fastening stud 5 from loosening. The anti-moving bolt 16 is screwed into the ring plate 3, and its end abuts tightly against the smooth rod of the fastening stud 5, thereby fixing the fastening stud 5 firmly and preventing the fastening stud 5 from rotating or shaking, thus preventing the fastening nut 6 from loosening.

[0024] A spiral guide plate 17 is provided inside the cooling jacket 2. During operation, cooling medium such as cooling water is passed into the cooling jacket. However, in actual use, it was found that there are certain dead angles in the flow of the cooling medium inside the cooling jacket 2, which will undoubtedly reduce the cooling effect of the cylinder 1 at that position. To avoid this problem, the spiral guide plate 17 is provided. The spiral guide plate 17 forms a spiral flow channel inside the cooling jacket 2. The cooling medium flows in the spiral flow channel. In this way, the dead angles in the flow of the cooling medium can be effectively eliminated, so that all parts of the cylinder 1 can be effectively cooled, thereby improving the cooling effect.

[0025] One end of the spring 10 is fixedly connected to the connecting rod 8, and the other end is provided with a hook. A positioning ring 18 is provided on the positioning rod 9. The spring 10 is installed between the connecting rod 8 and the positioning rod 9. In this utility model, the spring 10 is in the pull rope state, and it has a tendency to contract, thereby pulling the positioning rod 9 towards the fastening nut 6, so that the positioning rod 9 is tightly locked in the positioning hole 11 of the fastening nut 6. Considering that when the anti-loosening bolt 7 is screwed into the threaded hole, the positioning rod 9 may interfere with the fastening nut 6 and affect the rotation of the anti-loosening bolt 7, a hook is provided at one end of the spring 10. When tightening the anti-loosening bolt 7, the hook is released, and the positioning rod 9 is pushed aside. When the anti-loosening bolt 7 is tightened in place, the spring 10 is stretched so that the hook hooks the positioning ring 18. At this time, the positioning rod 9 is locked in the positioning hole 11, and the spring 10 tightens the positioning rod 9 to prevent the positioning rod 9 from coming out of the positioning hole 11.

[0026] Blind holes are machined on both end faces of the cylinder 1. The sealing flat cover 20 is provided with positioning pins 19 corresponding to the blind holes. The dimensions of the positioning pins 19 and the blind holes are matched. When the sealing flat cover 20 is installed at both ends of the cylinder 1, the positioning pins 19 are aligned with the blind holes. After installation, the positioning pins 19 are inserted into the blind holes. The positioning pins 19 have two functions: first, to guide the installation of the sealing flat cover 20; and second, to position the sealing flat cover 20 to prevent relative displacement between the sealing flat cover 20 and the cylinder 1, thereby ensuring a good seal between the two.

[0027] The specific inlet / outlet, pressure gauge port, and other process ports on the high-pressure furnace body described in this utility model are not described. They can be determined according to the actual situation and process requirements. In implementation, an adjusting shim 21 of suitable thickness can be placed in the threaded hole at the end of the fastening stud 5. The adjusting shim 21 can be a single piece or multiple pieces stacked together, as long as the thickness is appropriate. This facilitates adjusting the angle when the anti-loosening bolt 7 is tightened to the bottom of the threaded hole, thereby adjusting the orientation of the connecting rod 8 and the positioning rod 9, so that the positioning rod 9 can smoothly engage in the positioning hole 11 of the fastening nut 6.

Claims

1. A vertical high-pressure furnace body with a screw fastening structure, comprising a cylinder (1) and sealing flat covers (20) disposed at both ends of the cylinder (1), characterized in that: A cooling jacket (2) is provided on the outer wall of the cylinder (1). Multiple ring plates (3) are arranged vertically and vertically on the cylinder (1). A fixing frame is provided on the ring plate (3). The multiple ring plates (3) divide the cooling jacket (2) into multiple cooling zones. Each cooling zone is provided with a separate cooling medium inlet and outlet. An annular pressure cap (4) is provided on the outer side of each sealing flat cover (20). The two annular pressure caps (4) are connected and fixed by several fastening studs (5) and fastening nuts (6). The fastening studs (5) are arranged through the ring plate (3). Both ends of the fastening studs (5) are provided with anti-reflective material. The loosening mechanism and the anti-loosening mechanism include an anti-loosening bolt (7) and a connecting rod (8) set on the hexagonal head of the anti-loosening bolt (7). The end of the fastening stud (5) is machined with a threaded hole. The direction of rotation of the threaded hole is opposite to that of the fastening stud (5). The anti-loosening bolt (7) is screwed into the threaded hole, and the threaded end of the anti-loosening bolt (7) abuts against the bottom of the threaded hole. A positioning rod (9) is hinged on the connecting rod (8). A spring (10) is set between the connecting rod (8) and the positioning rod (9). Several positioning holes (11) that match the positioning rod (9) are uniformly machined on the circumference of the edge of the fastening nut (6).

2. The vertical high-pressure furnace body with screw fastening structure according to claim 1, characterized in that: The fixing frame includes fixing plates (12) symmetrically arranged on both sides of the cylinder (1). The fixing plates (12) are fixedly connected to the ring plate (3). Each fixing plate (12) is provided with a support plate (13). The lower part between the two support plates (13) is connected by a connecting plate (14). The bottom of the support plate (13) is provided with a base (15).

3. The vertical high-pressure furnace body with screw fastening structure according to claim 1, characterized in that: The fastening stud (5) is a double-ended stud. The ring plate (3) has a screw hole, and an anti-moving bolt (16) is screwed into the screw hole. The threaded end of the anti-moving bolt (16) abuts against the smooth rod of the fastening stud (5).

4. A vertical high-pressure furnace body with a screw fastening structure according to claim 1, characterized in that: The cooling jacket (2) is provided with a spiral guide plate (17).

5. A vertical high-pressure furnace body with a screw fastening structure according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the connecting rod (8), and the other end is provided with a hook. The positioning rod (9) is provided with a positioning ring (18).

6. A vertical high-pressure furnace body with a screw fastening structure according to claim 1, characterized in that: Blind holes are machined on both end faces of the cylinder (1), and a positioning post (19) corresponding to the blind hole is provided on the sealing flat cover (20).

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