Built-in X-ray bulb tube cooling structure

Abstract

The utility model relates to the technical field of X-ray bulb tubes, in particular to a built-in X-ray bulb tube cooling structure. The bulb tube comprises a bulb tube shell, a bulb tube core is arranged in an inner cavity of the bulb tube shell, an oil outlet is formed in the cathode end of the bulb tube shell, an oil inlet is formed in the anode end of the bulb tube shell, and the oil inlet is communicated with the inner cavity of the bulb tube shell; a motor is arranged outside the cathode end of the bulb tube shell, a driving shaft of the motor penetrates through the bulb tube shell, extends into the inner cavity and is connected with an impeller, a pump shell is arranged on the outer ring of the impeller, the impeller is surrounded by the pump shell, and a pump shell oil inlet and a pump shell oil outlet are formed in the pump shell. The oil outlet of the circulating pump coincides with the oil outlet of the X-ray bulb tube, high-temperature insulation cooling oil is directly pumped out of the bulb tube and enters an external cooling device to be cooled, the number of connectors is reduced, the oil leakage risk is reduced, the cooling efficiency is improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of X-ray tubes, in particular to a built-in X-ray tube cooling structure. Background Art

[0002] When the X-ray tube starts working, the tube core will generate a lot of heat, and a cooling device needs to be set up to cool the heat generated by the X-ray generator. In the prior art, heat dissipation insulating oil is set inside the X-ray tube, and a circulating pump is set outside the X-ray tube. When the X-ray tube starts working, the large amount of heat generated by the tube core is transferred to the insulating oil inside the tube through heat conduction. The hot oil is pumped out from the oil outlet by the circulating pump, and then cooled by an external cooling device and re-introduced into the tube to achieve the purpose of heat dissipation. The existing circulating pump is independent of the tube, which occupies a large space in the CT equipment. At the same time, there are many oil circuit interfaces in the cooling structure, and the risk of oil leakage is relatively high. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned existing production technology, the present application provides a built-in X-ray tube cooling structure, which integrates the circulating oil pump in the X-ray tube, saves the installation space in the CT equipment, and reduces the risk of oil leakage.

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

[0005] A built-in X-ray tube cooling structure comprises a tube shell, a tube core is arranged in the inner cavity of the tube shell, an oil outlet is arranged at the cathode end of the tube shell, an oil inlet is arranged at the anode end of the tube shell, and the oil inlet is connected to the inner cavity of the tube shell; a motor is arranged outside the cathode end of the tube shell, a driving shaft of the motor passes through the tube shell, extends into the inner cavity and is connected to an impeller, a pump shell is arranged on the outer ring of the impeller, the pump shell surrounds the impeller, a pump shell oil inlet hole and a pump shell oil outlet are respectively arranged on the pump shell, the pump shell oil inlet hole is connected to the inner cavity of the tube shell, and the pump shell oil outlet is directly connected to the oil outlet.

[0006] Furthermore, the pump housing and the ball tube housing are integrally cast.

[0007] Furthermore, the motor housing is detachably connected to the motor seat via a connecting piece, and the motor seat is detachably connected to the cathode end outer surface of the bulb shell via a connecting piece.

[0008] Furthermore, a circle of radial sealing grooves is arranged in the motor seat at the shaft seat position facing the motor, a radial sealing ring is arranged in the radial sealing groove, and the radial sealing ring can seal and contact the shaft seat of the motor; a circle of axial sealing grooves is arranged in the motor seat facing the end face of the motor housing, an axial sealing ring is arranged in the axial sealing groove, and the axial sealing ring can seal and contact the motor housing.

[0009] The beneficial effects of the utility model are as follows:

[0010] The utility model sets the oil outlet of the circulation pump and the oil outlet of the X-ray tube to overlap, and the high-temperature insulating cooling oil is directly extracted from the tube into an external cooling device for cooling, which reduces the number of joints, reduces the risk of oil leakage, improves cooling efficiency, and extends the service life of the equipment; the utility model simplifies the circulation pump to three main components: a motor, an impeller, and a pump casing, effectively reducing the volume of the circulation pump; the pump casing of the utility model is directly cast integrally with the tube casing, reducing the complexity of installation; the impeller and pump casing of the utility model are built-in, reducing the space occupied by the CT equipment; the external motor is convenient for disassembly and maintenance, reducing the difficulty of later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the utility model.

[0012] Figure 2 It is a half-section view of the utility model.

[0013] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0014] Among them: 1. Ball tube housing; 2. Oil inlet; 3. Oil outlet; 4. Motor; 5. Motor seat; 6. Impeller; 7. Pump casing; 8. Pump casing oil inlet hole; 9. Ball tube core; 10. Radial sealing ring; 11. Axial sealing ring. DETAILED DESCRIPTION

[0015] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0016] like Figure 1 and Figure 2 As shown, a built-in X-ray tube cooling structure mainly includes a tube shell 1, a tube core 9 is arranged in the inner cavity of the tube shell 1, and the space around the tube core 9 is filled with heat dissipation insulating oil. The heat generated by the tube core 9 when working can be absorbed by the heat dissipation insulating oil. The cathode end of the tube shell 1 is provided with an oil outlet 3, and the anode end of the tube shell 1 is provided with an oil inlet 2, and the oil inlet 2 is connected to the inner cavity of the tube shell 1.

[0017] like Figure 2 and Figure 3 As shown, a motor 4 is arranged outside the cathode end of the ball tube housing 1, and a driving shaft of the motor 4 passes through the ball tube housing 1 and extends into the inner cavity and is connected to the impeller 6. A pump housing 7 is arranged outside the impeller 6, and the pump housing 7 surrounds the impeller 6. The pump housing 7 and the ball tube housing 1 are integrally cast, which reduces the complexity of installation. The pump housing 7 is respectively provided with a pump housing oil inlet hole 8 and a pump housing oil outlet, and the pump housing oil inlet hole 8 is connected to the inner cavity of the ball tube housing 1, and the pump housing oil outlet is directly connected to the oil outlet 3.

[0018] When in use, the motor 4 drives the impeller 6 to rotate, and the hot oil is sucked into the pump housing 7 by the impeller 6, and then directly enters the external cooling device from the oil outlet 3 for cooling. The cooled heat dissipating insulating oil enters the inner cavity of the bulb housing 1 through the oil inlet 2 for circulation.

[0019] The utility model arranges the oil outlet of the circulation pump to coincide with the oil outlet of the X-ray tube, and the high-temperature insulating cooling oil is directly drawn from the tube into an external cooling device for cooling, thereby reducing the number of joints, reducing the risk of oil leakage, improving cooling efficiency, and extending the service life of the equipment.

[0020] like Figure 3 As shown, the motor 4 housing is detachably connected to the motor seat 5 through a connecting piece, and the motor seat 5 is detachably connected to the cathode end outer surface of the bulb housing 1 through a connecting piece. In order to improve the sealing performance, a circle of radial sealing grooves is arranged in the motor seat 5 facing the shaft seat of the motor 4, and a radial sealing ring 10 is arranged in the radial sealing groove, and the radial sealing ring 10 can seal and contact the shaft seat of the motor 4. A circle of axial sealing grooves is arranged on the motor seat 5 facing the end face of the motor 4 housing, and an axial sealing ring 11 is arranged in the axial sealing groove, and the axial sealing ring 11 can seal and contact the motor 4 housing. The utility model improves the sealing performance of the bulb housing 1 by setting a double sealing structure in the axial direction and the radial direction.

[0021] The utility model simplifies the circulation pump into three main components: a motor 4, an impeller 6 and a pump casing 7. The pump casing 7 is directly cast integrally with the tube casing 1. The motor 4 is arranged outside the tube casing 1, and the impeller 6 and the pump casing 7 are arranged in the inner cavity of the tube casing 1, which effectively reduces the volume of the circulation pump. The impeller 6 and the pump casing 7 are built-in to reduce the space occupied by the CT equipment. The motor 4 is externally arranged for easy disassembly and maintenance, which reduces the difficulty of later maintenance.

[0022] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A built-in X-ray tube cooling structure, comprising a tube housing (1), wherein a tube core (9) is arranged in an inner cavity of the tube housing (1), characterized in that: An oil outlet (3) is arranged at the cathode end of the ball tube housing (1), and an oil inlet (2) is arranged at the anode end of the ball tube housing (1), and the oil inlet (2) is communicated with the inner cavity of the ball tube housing (1); a motor (4) is arranged outside the cathode end of the ball tube housing (1), and a drive shaft of the motor (4) passes through the ball tube housing (1) and extends into the inner cavity and is connected to an impeller (6); a pump casing (7) is arranged on the outer ring of the impeller (6), and the pump casing (7) surrounds the impeller (6); a pump casing oil inlet hole (8) and a pump casing oil outlet are respectively arranged on the pump casing (7), and the pump casing oil inlet hole (8) is communicated with the inner cavity of the ball tube housing (1), and the pump casing oil outlet is directly communicated with the oil outlet (3).

2. The internal X-ray tube cooling structure according to claim 1, characterized in that: The pump housing (7) and the ball tube housing (1) are integrally cast.

3. The internal X-ray tube cooling structure according to claim 2, characterized in that: The motor (4) housing is detachably connected to the motor seat (5) via a connecting piece, and the motor seat (5) is detachably connected to the cathode end outer surface of the bulb tube housing (1) via a connecting piece.

4. The internal X-ray tube cooling structure according to claim 3, characterized in that: A circle of radial sealing grooves is arranged in the motor seat (5) at the shaft seat position facing the motor (4), a radial sealing ring (10) is arranged in the radial sealing groove, and the radial sealing ring (10) is capable of sealingly contacting the shaft seat of the motor (4); a circle of axial sealing grooves is arranged in the motor seat (5) at the end surface of the motor (4) housing, an axial sealing ring (11) is arranged in the axial sealing groove, and the axial sealing ring (11) is capable of sealingly contacting the motor (4) housing.

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