Three-section oil passage connection structure and connection process of x-ray tube assembly radiator

Abstract

This invention discloses a three-section oil circuit connection structure for an X-ray tube assembly radiator, characterized by: comprising an X-ray tube assembly and a radiator; the cooling oil circuit within the X-ray tube assembly is connected at both ends to the tube assembly inlet pipe and the tube assembly outlet pipe, respectively; the oil circuit within the radiator is connected at both ends to the radiator outlet pipe and the radiator return pipe, respectively; including two states: before assembly and after assembly; in the pre-assembly state, the X-ray tube assembly and the radiator are separated, and the cooling oil circuits and corresponding pipes within the X-ray tube assembly and the radiator are completely pre-filled with cooling oil; and the free ends of the tube assembly inlet pipe, tube assembly outlet pipe, radiator outlet pipe, and radiator return pipe are all sealed with plugs; improving on-site installation efficiency, connection consistency, and long-term operational reliability.

Description

Technical Field

[0001] This invention belongs to the field of heat sinks for X-ray tube assemblies. Background Technology

[0002] High-power X-ray tubes generate a large amount of heat during operation, requiring forced oil circulation cooling via a radiator to ensure continuous output power and long-term reliability. Due to space constraints in the overall installation, the distance between the X-ray tube assembly and the radiator is usually very short. Traditional direct-connection oil pipe solutions suffer from problems such as difficulty in oil filling, incomplete venting, assembly interference, and inability to conduct independent production and debugging under short-distance conditions.

[0003] Existing technologies mainly include three solutions:

[0004] Integrated structure: The tube assembly and radiator are rigidly fixed together by a metal bracket. The advantage is that no secondary docking is required after assembly; the disadvantages are that the overall weight is large, difficult to transport, inconvenient to install and operate, and significantly increases the centrifugal load on the whole machine, affecting the life of rotating parts.

[0005] Quick-connect couplings: High-pressure quick-connect couplings are used at the ends of the oil pipes to enable separate production and rapid on-site connection. The disadvantages are that quick-connect couplings require high sealing levels, are expensive, significantly increasing product costs, and pose a risk of leakage with long-term use.

[0006] Long oil pipe connection: Extended oil pipes are used to increase the docking distance, facilitating separate operation. The disadvantages are increased oil circuit length, higher circulation resistance, the need for a higher head oil pump, resulting in increased energy consumption, increased cost, and larger space occupation.

[0007] None of the above solutions can simultaneously meet the comprehensive requirements of low cost, lightweight, short oil circuit, easy assembly, thorough oil injection and venting, and high production flexibility. Summary of the Invention

[0008] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a three-section oil circuit connection structure and connection process for X-ray tube assembly heat sink, which improves on-site installation efficiency, connection consistency and long-term operational reliability.

[0009] Technical solution: To achieve the above objectives, the present invention provides a three-section oil circuit connection structure for an X-ray tube assembly radiator, characterized in that: it includes an X-ray tube assembly and a radiator; the cooling oil circuit within the X-ray tube assembly is connected at both ends to the tube assembly inlet oil pipe and the tube assembly outlet oil pipe, respectively; the oil circuit within the radiator is connected at both ends to the radiator outlet oil pipe and the radiator return oil pipe, respectively; and includes two states: before assembly and after assembly.

[0010] Before assembly, the X-ray tube assembly and the radiator are separated from each other. The cooling oil passages and corresponding pipes in the X-ray tube assembly and the radiator are completely pre-filled with cooling oil. The free ends of the oil inlet pipe of the tube assembly, the oil outlet pipe of the tube assembly, the oil outlet pipe of the radiator, and the oil return pipe of the radiator are all sealed with plugs.

[0011] In the assembled state, the free end of the oil inlet pipe of the pipe assembly is connected to the free end of the oil outlet pipe of the radiator through connector a; the free end of the oil outlet pipe of the pipe assembly is connected to the free end of the oil return pipe of the radiator through connector b.

[0012] Furthermore, both the a-connector and the b-connector include a connecting box, inside which is a connecting chamber, with the a-connector pipe and the b-connector pipe connected to each end of the connecting chamber, respectively.

[0013] Furthermore, in the assembled state, the a connector tube and the b connector tube of the a connector are respectively sealed and fitted into the free end of the radiator oil outlet tube and the free end of the tube assembly oil inlet tube, and are sealed and tightened by sealing clamps.

[0014] The a-connector pipe and the b-connector pipe of the b-connector are respectively sealed inside the free end of the oil outlet pipe of the pipe assembly and the free end of the oil return pipe of the radiator, and are sealed and tightened by sealing clamps.

[0015] Furthermore, a liquid sealing port is provided on the upper part of the connecting box; in the use state, a permanent sealing cap is fixedly sealed on the liquid sealing port.

[0016] Furthermore, the cooling oil circuits in the X-ray tube assembly and radiator, as well as the corresponding pipe fittings, are all pre-filled with mineral insulating oil; the oil inlet pipe of the tube assembly, the oil outlet pipe of the tube assembly, the oil outlet pipe of the radiator, and the oil return pipe of the radiator are all flexible hoses.

[0017] Optional connection process for the three-section oil circuit connection structure of the X-ray tube assembly heat sink:

[0018] Before assembly, the X-ray tube assembly and the radiator are manufactured by different manufacturers. The cooling oil passages and corresponding pipes in the X-ray tube assembly and the radiator are fully pre-filled with cooling oil before leaving the factory. The free ends of the oil inlet pipe of the tube assembly, the oil outlet pipe of the tube assembly, the oil outlet pipe of the radiator and the oil return pipe of the radiator are temporarily sealed with sealing plugs before leaving the factory.

[0019] First, install oil pipe shut-off clamps near the free ends of the radiator oil outlet pipe and radiator oil return pipe to clamp the oil pipes and achieve temporary shut-off sealing. Then, remove the sealing plugs from the free ends of the radiator oil outlet pipe and radiator oil return pipe. Next, seal the a connector pipe and b connector pipe of connector a into the free ends of the radiator oil outlet pipe and the pipe assembly oil inlet pipe, respectively, and seal them tightly with sealing clamps. Then, fill the connecting chamber with cooling oil through the open sealing port using an oil filling funnel. After removing the oil filling funnel, use ultrasonic welding or welding along the joint to permanently seal the sealing port so that the sealing cap cannot be removed. Finally, remove the oil pipe shut-off clamps.

[0020] Optionally, before assembly, a permanent sealing cap is non-removably sealed to the sealing liquid port. The inner sides of the openings of the a connector tube and the b connector tube of the a-connector / b-connector are fixedly sealed with convex solid paraffin caps. The convex solid paraffin caps are ellipsoidal shells that gradually taper at the ends along the axial direction, and the outer ring of the root of the convex solid paraffin caps is locked with the hook pattern of the inner wall of the a connector tube or the b connector tube. The connecting chamber is completely sealed under the combined action of the convex solid paraffin caps and the permanent sealing caps at both ends, and the connecting chamber in the sealed state is completely pre-filled with polyalphaolefin liquid before production.

[0021] The connection process of the three-section oil circuit connection structure of the X-ray tube assembly radiator is as follows: First, raise the free end of the radiator oil outlet pipe vertically upwards by hand, then remove the sealing plug of the free end of the radiator oil outlet pipe. Then, hold the A connector and gradually insert the A connector pipe downwards and coaxially into the free end of the radiator oil outlet pipe. During the above process, the convex solid paraffin cap at the end of the A connector pipe is inserted downwards into the free end of the radiator oil outlet pipe first. During the insertion process, some mineral oil at the free end of the radiator oil outlet pipe will overflow outwards due to the occupant action until the A connector pipe and the free end of the radiator oil outlet pipe are completely connected. Then, seal and tighten the connection with the sealing clamp.

[0022] Then, by hand, first raise the free end of the oil inlet pipe of the pipe assembly vertically upwards, then remove the sealing plug of the free end of the oil inlet pipe of the pipe assembly, and then hold the a-connector and gradually insert the b-connector pipe of the a-connector downwards and coaxially into the free end of the oil inlet pipe of the pipe assembly. During the above process, the convex solid paraffin cap at the end of the b-connector pipe is inserted downwards into the free end of the oil inlet pipe of the pipe assembly first, and during the insertion process, some mineral oil at the free end of the oil inlet pipe of the pipe assembly will overflow outwards due to the occupant action, until the b-connector pipe and the free end of the oil inlet pipe of the pipe assembly are completely connected, and then seal and tighten with a sealing clamp.

[0023] Beneficial effects: Before leaving the factory, the communicating vessel of the present invention has a permanent sealing cap welded non-removably to the oil inlet, and the inside of the two connector pipes is fixedly sealed with an outwardly convex ellipsoidal solid paraffin cap. Under the joint sealing of the paraffin cap and the permanent sealing cap, the internal cavity of the communicating vessel is completely pre-filled with polyalphaolefin liquid compatible with mineral insulating oil.

[0024] During on-site connection, simply raise the free end of the hose and pull out the sealing plug vertically upwards, then insert the connector downwards into the pipe opening; the convex solid paraffin cap, with its streamlined shape and space-occupying effect, discharges a small amount of mineral oil from the pipe opening during insertion, achieving bubble-free connection, and temporarily blocks the oil passage in a solid form, providing ample time for tightening the clamp.

[0025] After docking, the mineral insulating oil gradually dissolves the solid paraffin cap, which is a non-polar alkane, based on the principle of like dissolves like. After complete dissolution, it releases the pre-encapsulated polyalphaolefin liquid. The two are miscible with the mineral insulating oil in any proportion, and the internal cavity of the communicating vessel is automatically connected, and the oil circuit is automatically connected.

[0026] The entire connection process completely eliminates the need for on-site oil replenishment, venting, and flow interruption clamp operations, thus eliminating the risks of air bubble introduction and hose clamping damage. The trace dissolution of paraffin and polyalphaolefin does not affect the insulation strength and flowability of the mineral insulating oil. Through the material compatibility design and pre-encapsulation of paraffin, polyalphaolefin, and mineral insulating oil, the complex oil filling and venting process is simplified into a simple plug-and-play tightening operation, improving on-site installation efficiency, connection consistency, and long-term operational reliability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the device in its combined state;

[0028] Figure 2 A schematic diagram of a single X-ray tube assembly;

[0029] Figure 3 A schematic diagram of a single heat sink;

[0030] Figure 4 This is a schematic diagram showing the connected state of the a-connector;

[0031] Figure 5 This is a schematic diagram of the connection process before the improvement.

[0032] Figure 6 To improve the structure of the a-connector. Detailed Implementation

[0033] The invention will now be further described with reference to the accompanying drawings.

[0034] like Figures 1 to 6The three-section oil circuit connection structure of the X-ray tube assembly radiator shown includes an X-ray tube assembly 2 and a radiator 1. The radiator 1 is an air-cooled or water-cooled heat dissipation device with a meandering oil circuit inside to increase the heat exchange area. The cooling oil circuit inside the X-ray tube assembly 2 is connected to the tube assembly inlet oil pipe 4a and the tube assembly outlet oil pipe 4b at both ends, respectively. The cooling oil circuit inside the X-ray tube assembly 2 surrounds the X-ray tube anode target disk to remove the large amount of heat generated during operation. The oil circuit inside the radiator 1 is connected to the radiator outlet oil pipe 3a and the radiator return oil pipe 3b at both ends, respectively. The radiator outlet oil pipe 3a is used to send out the cooled oil in the radiator, and the radiator return oil pipe 3b is used to receive the hot oil from the tube assembly, forming a circulation.

[0035] It includes two states: before and after assembly. The three-section oil circuit connection structure allows the X-ray tube assembly and the heat sink to be manufactured and transported independently in a physically separated state, and a leak-free connection can be completed on site through a simple docking operation, reducing the integration difficulty.

[0036] Before assembly, the final assembly and factory testing of X-ray tube assembly 2 and radiator 1 are completed by the X-ray tube manufacturing plant. The integrated assembly of the two can be completed either in the manufacturing plant or on-site, depending on the product structure design. When the cooling oil pipe length is moderate, factory pre-integration assembly is preferred. This enables modular mass production, reduces assembly difficulty, improves production efficiency, and allows for oil filling under controlled conditions, effectively ensuring oil filling accuracy and sealing quality. On-site integrated assembly is only used in special circumstances where the oil pipe design size is too short, the space at the overall assembly station is limited, or the on-site assembly operation is too difficult.

[0037] The X-ray tube assembly 2 and the radiator 1 are in a separate state. The cooling oil circuits and corresponding pipes in the X-ray tube assembly 2 and the radiator 1 are completely pre-filled with cooling oil. The free ends of the oil inlet pipe 4a of the tube assembly, the oil outlet pipe 4b of the tube assembly, the oil outlet pipe 3a of the radiator, and the oil return pipe 3b of the radiator are temporarily sealed with sealing plugs 14. The sealing plugs 14 are elastic rubber plugs. After being inserted into the pipe opening, they achieve oil sealing by interference fit and can withstand vibration during transportation.

[0038] In the assembled state, the free end of the oil inlet pipe 4a of the pipe assembly is connected to the free end of the oil outlet pipe 3a of the radiator via connector 5a (a); the free end of the oil outlet pipe 4b of the pipe assembly is connected to the free end of the oil return pipe 3b of the radiator via connector 5b (b). Thus, the oil outlet pipe 3a of the radiator, connector 5a (a), the oil inlet pipe 4a of the pipe assembly, the internal oil circuit of the X-ray tube assembly 2, the oil outlet pipe 4b of the pipe assembly, connector 5b (b), the oil return pipe 3b of the radiator, and the internal circulation pump of the radiator constitute a complete closed-loop circulating oil circuit.

[0039] Both the a-connector 5a and the b-connector 5b include a connecting box 11, inside which is a connecting chamber 9. The two ends of the connecting chamber 9 are connected to the a-connector pipe 7 and the b-connector pipe 8, respectively.

[0040] In the assembled state, the a-connector pipe 7 and the b-connector pipe 8 of the a-connector 5a are respectively sealed and fitted into the free end of the radiator oil outlet pipe 3a and the free end of the pipe assembly oil inlet pipe 4a, and are sealed and tightened by the sealing clamp 6.

[0041] The a-connector pipe 7 and b-connector pipe 8 of the b-connector 5b are respectively sealed inside the free end of the oil outlet pipe 4b of the pipe assembly and the free end of the oil return pipe 3b of the radiator, and are sealed and tightened by the sealing clamp 6.

[0042] The upper part of the connecting box 11 is provided with a liquid sealing port 34. In use, a permanent sealing cap 10 is fixedly sealed on the liquid sealing port 34. The permanent sealing cap 10 means that once sealed, the cap is non-removable. Specifically, it is permanently sealed by ultrasonic welding or welding along the seam after sealing. The material of the permanent sealing cap 10 is the same as or compatible with that of the connecting box 11. The molecular-level fusion is achieved by ultrasonic welding to ensure a permanent seal and prevent moisture and air from entering.

[0043] The cooling oil in the X-ray tube assembly 2 and the radiator 1, as well as the corresponding pipe fittings, is completely pre-filled with mineral insulating oil; the oil inlet pipe 4a of the tube assembly, the oil outlet pipe 4b of the tube assembly, the oil outlet pipe 3a of the radiator, and the oil return pipe 3b of the radiator are all flexible hoses.

[0044] Connection process of the three-section oil circuit connection structure of the X-ray tube assembly heat sink:

[0045] Before assembly, the X-ray tube assembly 2 and the radiator 1 were manufactured by different manufacturers. The cooling oil circuits and corresponding pipes in the X-ray tube assembly 2 and the radiator 1 were fully pre-filled with cooling oil before leaving the factory. The free ends of the oil inlet pipe 4a, the oil outlet pipe 4b, the oil outlet pipe 3a, and the oil return pipe 3b of the radiator were temporarily sealed with sealing plugs 14 before leaving the factory.

[0046] Taking the connection process of the radiator oil outlet pipe 3a free end and the radiator oil return pipe 3b free end as an example, the oil pipe disconnection clamp 51 is first installed at the position close to the free end of the radiator oil outlet pipe 3a and the free end of the radiator oil return pipe 3b to clamp the oil pipe and achieve temporary flow interruption and sealing. The oil pipe disconnection clamp 51 is a special hose clamp. The clamping force is adjusted by the screw to make the inner wall of the hose fit together to achieve temporary flow interruption. However, repeated clamping can easily lead to local fatigue damage to the hose. Then remove the sealing plugs 14 from the free ends of the radiator oil outlet pipe 3a and the radiator oil return pipe 3b. Then, seal the a connector pipe 7 and b connector pipe 8 of the a connector 5a into the free ends of the radiator oil outlet pipe 3a and the pipe assembly oil inlet pipe 4a, respectively, and seal them tightly with the sealing clamps 6. Then, fill the connecting chamber 9 with cooling oil through the open sealing port 34 using the oil filling funnel 16. After removing the oil filling funnel 16, use ultrasonic welding or welding along the joint to seal the sealing port 34 of the permanent sealing cap 10 so that it cannot be removed. Finally, remove the oil pipe disconnect clamp 51.

[0047] The above-mentioned oil injection process is cumbersome and requires additional mineral insulating oil to be prepared on-site. Furthermore, the oil injection process is prone to introducing air bubbles due to improper operation, and the clamping process of the oil pipe disconnect clamp 51 poses a risk of damage to the pipeline. To address these issues, the following further optimized embodiment is designed:

[0048] The optimized structure of the a-connector 5a is as follows: Figure 6 As shown, before assembly, the permanent sealing cap 10 is already non-removably sealed to the sealing liquid port 34 before leaving the factory. The inner sides of the a-connector pipe 7 and b-connector pipe 8 of the a-connector 5a / b-connector 5b are fixedly sealed with an outwardly convex solid paraffin wax cap 12. The solid paraffin wax cap 12 uses paraffin wax with a melting point range of 55 to 80℃, and is a solid hard shell at room temperature. Its thickness is designed according to the pipe diameter of the connector, and is above 3mm to ensure sufficient sealing strength and controllable dissolution time. The outwardly convex solid paraffin wax cap 12 is ellipsoidal. The convex shell-like wall, tapering gradually at its ends along the axial direction, has an ellipsoidal streamlined shape that effectively dissipates oil during insertion into the tubing and serves as a guide for alignment. The small, pointed tip facilitates the breaking of the oil film, achieving bubble-free connection. Furthermore, the outer ring of the convex solid paraffin cap 12's root engages with the hook-pattern seal on the inner wall of connector a 7 or connector b 8. The hook pattern refers to the annular or spiral grooves machined into the inner wall of the connector tube; during injection molding, paraffin penetrates to form a mechanical lock, ensuring it will not detach during transportation and installation. The connecting chamber 9, under the combined action of the convex solid paraffin caps 12 and the permanent sealing caps 10 at both ends, forms a completely sealed state. Before production, the sealed connecting chamber 9 is completely pre-filled with polyalphaolefin liquid; the polyalphaolefin liquid is a low-viscosity synthetic hydrocarbon oil with excellent electrical insulation properties, oxidation stability, and good compatibility with mineral insulating oil.

[0049] The relationship between polyalphaolefin liquid, solid paraffin, and mineral insulating oil: Mineral insulating oil and solid paraffin are both non-polar alkanes and exhibit miscibility. Based on the principle of "like dissolves like," the non-polar mineral insulating oil and solid paraffin have similar structures, allowing solvent molecules to penetrate into the amorphous regions of paraffin, causing it to swell and dissolve. A small proportion of solid paraffin can gradually dissolve in mineral insulating oil at room temperature, and this small dissolution does not affect the insulation and flowability of the mineral insulating oil. Typically, less than 3% of the total oil volume is dispersed in the mineral insulating oil without reducing its breakdown voltage, and because its melting point is higher than ambient temperature, it remains liquid and does not affect the oil pump circulation. Mineral insulating oil and polyalphaolefin liquid are miscible in any proportion, and polyalphaolefin liquid can also improve the oxidation stability of mineral insulating oil and reduce sludge formation. Since solid paraffin and polyalphaolefin liquid are almost immiscible at room temperature, and polyalphaolefin is a non-polar synthetic oil that is completely miscible with mineral insulating oil, it can be used as a pre-filling fluid sealed by paraffin, and polyalphaolefin liquid can be stably encapsulated by solid paraffin.

[0050] Introduction to the improved connection process:

[0051] Before assembly, the X-ray tube assembly 2 and the radiator 1 were manufactured by different manufacturers. The cooling oil circuits and corresponding pipes in the X-ray tube assembly 2 and the radiator 1 were fully pre-filled with cooling oil before leaving the factory. The free ends of the oil inlet pipe 4a of the tube assembly, the oil outlet pipe 4b of the tube assembly, the oil outlet pipe 3a of the radiator and the oil return pipe 3b of the radiator were temporarily sealed with sealing plugs 14 before leaving the factory.

[0052] The specific improved connection process, taking the connection process between the free end of the radiator oil outlet pipe 3a and the free end of the radiator oil return pipe 3b as an example:

[0053] The communicating device 5a (a) and communicating device 5b (b) need to be installed sequentially. This example will first illustrate the installation of communicating device 5a (a):

[0054] First, lift the free end of the radiator oil outlet pipe 3a vertically upwards by hand. Then, remove the sealing plug 14 from the free end of the radiator oil outlet pipe 3a. Next, hold the a-connector 5a and gradually insert the a-connector pipe 7 of the a-connector 5a downwards and coaxially into the free end of the radiator oil outlet pipe 3a. By lifting the end of the hose vertically upwards, an oil meniscus is formed at the pipe opening after the sealing plug 14 is removed, preventing air backflow. During the above process, the convex solid paraffin cap 12 at the end of the a-connector pipe 7 is inserted downwards into the free end of the radiator oil outlet pipe 3a. During the insertion process, a small amount of mineral oil at the free end of the radiator oil outlet pipe 3a will overflow outwards due to the positioning effect. This small amount of overflow during the docking process avoids the problem of air bubbles forming inside after docking. Continue until the a-connector pipe 7 and the free end of the radiator oil outlet pipe 3a are completely docked. Then, seal and tighten the connection with the sealing clamp 6.

[0055] At this point, the mineral insulating oil in the free end of the radiator oil outlet pipe 3a begins to slowly dissolve the protruding solid paraffin cap 12 at the end of connector pipe 7. However, the dissolution rate is relatively slow, and connector pipe 7 remains continuously blocked. This blockage provides the operator with ample time for subsequent pipe connections and clamp tightening without worrying about oil leakage. Normally, it takes several hours for the paraffin cap to completely dissolve at room temperature. This can be accelerated to within tens of minutes by heating it to about 60°C with an external hot air gun.

[0056] Subsequently, by hand, the free end of the oil inlet pipe 4a of the pipe assembly is raised vertically upwards. Then, the sealing plug 14 of the free end of the oil inlet pipe 4a of the pipe assembly is removed. Then, holding the a-connector 5a, the b-connector pipe 8 of the a-connector 5a is gradually inserted downwards and coaxially into the free end of the oil inlet pipe 4a of the pipe assembly. During the above process, the protruding solid paraffin cap 12 at the end of the b-connector pipe 8 is inserted downwards into the free end of the oil inlet pipe 4a of the pipe assembly first. During the insertion process, a small amount of mineral oil at the free end of the oil inlet pipe 4a of the pipe assembly will overflow outwards due to the occupant action. This avoids the problem of air bubbles forming inside after the connection is completed by a small amount of overflow during the connection process. Until the b-connector pipe 8 and the free end of the oil inlet pipe 4a of the pipe assembly are completely connected, the sealing clamp 6 is used to seal and tighten it. This completes the air bubble-free and extra-oil-free connection between the free end of the radiator oil outlet pipe 3a and the free end of the radiator oil return pipe 3b.

[0057] Subsequently, since mineral insulating oil and solid paraffin are both non-polar alkanes and have miscibility, appropriate heating can be used to accelerate dissolution after a predetermined time. The protruding solid paraffin caps 12 at both ends of the connecting chamber 9 gradually and completely dissolve in the mineral insulating oil in the radiator oil outlet pipe 3a and radiator oil return pipe 3b. After the protruding solid paraffin caps 12 are completely dissolved, the polyalphaolefin liquid in the connecting chamber 9 also dissolves into the mineral insulating oil, thereby enabling the connecting chamber 9 to automatically connect the radiator oil outlet pipe 3a with the pipe assembly oil inlet pipe 4a. Since the total amount of polyalphaolefin liquid and paraffin in the a-connector 5a / b-connector 5b is very small relative to the proportion of mineral insulating oil in the entire heat dissipation circulation system, it will not affect the insulation and fluidity of the mineral insulating oil. The entire connection process does not require on-site preparation of insulating oil, nor does it require venting or air removal, avoiding the risk of partial discharge caused by air bubbles, and significantly improving the overall reliability of the X-ray system and the efficiency of on-site installation.

[0058] The installation method for the 5b connector is the same as described above.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A three-section oil circuit connection structure for an X-ray tube assembly heat sink, characterized in that: It includes an X-ray tube assembly (2) and a radiator (1); the cooling oil circuit in the X-ray tube assembly (2) is connected to the oil inlet pipe (4a) and the oil outlet pipe (4b) of the tube assembly at both ends; the oil circuit in the radiator (1) is connected to the oil outlet pipe (3a) and the oil return pipe (3b) of the radiator at both ends; it includes two states: before assembly and after assembly. Before assembly, the X-ray tube assembly (2) and the radiator (1) are separated from each other. The cooling oil circuits and corresponding pipes in the X-ray tube assembly (2) and the radiator (1) are completely pre-filled with cooling oil. The free ends of the oil inlet pipe (4a) of the tube assembly, the oil outlet pipe (4b) of the tube assembly, the oil outlet pipe (3a) of the radiator and the oil return pipe (3b) of the radiator are all sealed with sealing plugs (14). In the assembled state, the free end of the oil inlet pipe (4a) of the pipe assembly is connected to the free end of the oil outlet pipe (3a) of the radiator through a connector (5a); the free end of the oil outlet pipe (4b) of the pipe assembly is connected to the free end of the oil return pipe (3b) of the radiator through a connector (5b).

2. The three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 1, characterized in that: Both the a-connector (5a) and the b-connector (5b) include a connecting box (11), inside which is a connecting chamber (9), and the two ends of the connecting chamber (9) are connected to the a-connector pipe (7) and the b-connector pipe (8) respectively.

3. The three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 2, characterized in that: In the assembled state, the a connector pipe (7) and the b connector pipe (8) of the a connector (5a) are respectively sealed and connected to the free end of the radiator oil outlet pipe (3a) and the free end of the pipe assembly oil inlet pipe (4a), and are sealed and tightened by the sealing clamp (6); The a connector pipe (7) and b connector pipe (8) of the b connector (5b) are respectively sealed inside the free end of the oil outlet pipe (4b) of the pipe assembly and the free end of the oil return pipe (3b) of the radiator, and are sealed and tightened by the sealing clamp (6).

4. The three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 3, characterized in that: A liquid sealing port (34) is provided on the upper part of the connecting box (11); in the use state, a permanent sealing cap (10) is fixedly sealed on the liquid sealing port (34).

5. The three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 4, characterized in that: The cooling oil circuits in the X-ray tube assembly (2) and the radiator (1) and the corresponding pipe fittings are all pre-filled with mineral insulating oil; the oil inlet pipe (4a) of the tube assembly, the oil outlet pipe (4b) of the tube assembly, the oil outlet pipe (3a) of the radiator and the oil return pipe (3b) of the radiator are all flexible hoses.

6. The connection process of the three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 5, characterized in that: Before assembly, the X-ray tube assembly (2) and the radiator (1) were manufactured by different manufacturers. The cooling oil circuits and corresponding pipes in the X-ray tube assembly (2) and the radiator (1) were fully pre-filled with cooling oil before leaving the factory. The free ends of the oil inlet pipe (4a) of the tube assembly, the oil outlet pipe (4b) of the tube assembly, the oil outlet pipe (3a) of the radiator and the oil return pipe (3b) of the radiator were temporarily sealed with sealing plugs (14) before leaving the factory. First, install the oil pipe disconnect clamp (51) near the free end of the radiator oil outlet pipe (3a) and the free end of the radiator oil return pipe (3b) to clamp the oil pipe and achieve temporary disconnection and sealing; then remove the sealing plugs (14) from the free end of the radiator oil outlet pipe (3a) and the free end of the radiator oil return pipe (3b); then, seal the a connector pipe (7) and b connector pipe (8) of the a connector (5a) to the free end of the radiator oil outlet pipe (3a) and the free end of the pipe assembly inlet pipe (4a) respectively, and seal them tightly with the sealing clamp (6); then fill the connecting chamber (9) with heat dissipation oil through the open sealing port (34) using the oil filling funnel (16); then remove the oil filling funnel (16) and use ultrasonic welding or welding along the joint to seal the permanent sealing cap (10) so that the sealing port (34) is not removable; finally, remove the oil pipe disconnect clamp (51).

7. The three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 5, characterized in that: Before assembly, the permanent sealing cap (10) is non-removably sealed to the sealing liquid port (34). The inner side of the opening of the a connector tube (7) and the b connector tube (8) of the a connector (5a) / b connector (5b) is fixedly sealed with an outwardly convex solid paraffin cap (12). The outwardly convex solid paraffin cap (12) is an ellipsoidal shell wall that gradually tapers at the end along the axial direction. The outer ring of the root of the outwardly convex solid paraffin cap (12) is sealed and engaged with the hook pattern of the inner wall of the a connector tube (7) or the b connector tube (8). The connecting chamber (9) forms a completely sealed state under the combined action of the outwardly convex solid paraffin cap (12) and the permanent sealing cap (10) at both ends. The connecting chamber (9) in the sealed state before production is completely pre-filled with polyalphaolefin liquid.

8. The connection process of the three-section oil circuit connection structure of the X-ray tube assembly heat sink according to claim 7, characterized in that: First, raise the free end of the radiator oil outlet pipe (3a) vertically upwards by hand, then remove the sealing plug (14) of the free end of the radiator oil outlet pipe (3a), and then hold the a-connector (5a) and gradually insert the a-connector pipe (7) of the a-connector (5a) downwards and coaxially into the free end of the radiator oil outlet pipe (3a). During the above process, the convex solid paraffin cap (12) at the end of the a-connector pipe (7) is inserted downwards into the free end of the radiator oil outlet pipe (3a) first. During the insertion process, some mineral oil at the free end of the radiator oil outlet pipe (3a) will overflow outwards under the occupying effect until the a-connector pipe (7) and the free end of the radiator oil outlet pipe (3a) are completely connected. Then, seal and tighten it with the sealing clamp (6). Then, by hand, the free end of the oil inlet pipe (4a) of the pipe assembly is raised vertically upwards. Then, the sealing plug (14) of the free end of the oil inlet pipe (4a) of the pipe assembly is removed. Then, holding the a-connector (5a), the b-connector pipe (8) of the a-connector (5a) is gradually inserted downwards and coaxially into the free end of the oil inlet pipe (4a) of the pipe assembly. During the above process, the convex solid paraffin cap (12) at the end of the b-connector pipe (8) is inserted downwards into the free end of the oil inlet pipe (4a) of the pipe assembly. During the insertion process, some mineral oil at the free end of the oil inlet pipe (4a) of the pipe assembly will overflow outwards under the occupying effect until the b-connector pipe (8) and the free end of the oil inlet pipe (4a) of the pipe assembly are completely connected. Then, the sealing clamp (6) is used to seal and tighten it.

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