CN102783959B - Device for preventing coolant material of an X-ray unit from evaporating when being overheated - Google Patents

Abstract

The invention discloses an X-ray machine anti-coolant overheating evaporation device, which includes a fluid containing cavity, which is filled with a liquid coolant, and maintains liquid communication with the coolant inlet pipeline of the X-ray machine; a first container and a second container Two containers, the bottoms of which are connected by a flexible connecting pipe and kept in fluid communication, liquid heavy metals are installed inside to increase the pressure of the liquid coolant, the first container is located above the fluid containing cavity, The second container is connected with a fixed rod through bolts; a temperature sensor senses the temperature of the X-ray machine; a drive mechanism and a control module, the control module receives signals from the temperature sensor, and The driving mechanism is controlled, the driving mechanism is connected with the second container, and drives the second container to move up and down along the fixed rod. The X-ray machine anti-coolant overheating evaporation device of the invention has good cooling effect and prolongs the service life of the X-ray machine.

Description

Anti-coolant overheating evaporation device for X-ray machine

technical field

The invention relates to a medical device, in particular to an X-ray machine anti-coolant overheating evaporation device.

Background technique

Nearly 100% of the energy used to generate X-rays in the X-ray machine is converted into heat, which is discharged from the ray tube by the liquid cooling medium. Because of the huge heat generation, the liquid coolant is heated to the boiling point and evaporates. The evaporated gas coolant will greatly reduce the effective heat transfer area and reduce the contact between the liquid coolant and the heat transfer surface, thus seriously affecting the cooling of the X-ray tube. Causes the X-ray tube to overheat.

Contents of the invention

The object of the present invention is to provide an X-ray machine anti-coolant overheating evaporation device, which can suppress the generation of bubbles in the output window area, increase the static pressure of the liquid, and suppress the evaporation of the liquid coolant.

In order to solve the difficulties existing in the prior art and achieve the above-mentioned purpose, the present invention provides an X-ray machine anti-coolant overheating evaporation device, including:

The fluid containing cavity is filled with a liquid coolant and is in liquid communication with the coolant inlet pipeline of the X-ray machine;

The bottoms of the first container and the second container are connected by a flexible connecting pipe to maintain liquid communication, and liquid heavy metals are installed inside to increase the pressure of the liquid coolant, and the first container is located in the fluid container. Above the cavity, the second container is connected to a fixed rod through bolts;

A temperature sensor, which senses the temperature of the X-ray machine;

a driving mechanism and a control module, the control module receives the signal from the temperature sensor and controls the driving mechanism, the driving mechanism is connected with the second container, drives the second container along the The fixed rod moves up and down.

Preferably, the fluid containing cavity comprises:

a top membrane positioned between the fluid-containing cavity and the first container and at least partially forming a movable piston between the fluid-containing cavity and the first container;

a base located at the bottom of the fluid containing cavity;

membrane, connecting the top membrane and the base.

Preferably, the top membrane and membrane are mechanically flexible and coolant impermeable membranes.

Preferably, the driving mechanism is a stepping motor.

Preferably, the liquid heavy metal is mercury.

The beneficial effects of the present invention are: the X-ray machine anti-coolant overheating evaporation device according to the present invention changes the position of the second container according to the temperature information of the X-ray tube, and then adjusts the static pressure of the liquid coolant to suppress the evaporation of the liquid coolant The purpose is to prevent the X-ray tube from overheating during the working process, and the cooling effect is good, which prolongs the service life of the X-ray machine.

Description of drawings

Fig. 1 is the structural representation of the anti-coolant overheating evaporation device of the X-ray machine described herein

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, so that those of ordinary skill in the art can implement it after referring to this specification.

The boiling point of liquid coolant is determined by the static pressure of the liquid, the lower the static pressure, the lower the boiling point and the easier the liquid evaporates. When the X-ray machine is working, the X-ray tube rotates around the system axis 2, and the rotational centrifugal force acceleration is much greater than the gravitational acceleration, so the hydrostatic pressure depends on the rotational centrifugal force. The centrifugal force at a certain point in the rotating body is proportional to the distance between this point and the center of rotation. Therefore, the static pressure in the output window area 3, which is closest to the system axis and under strong thermal load, is the smallest. In order to suppress the tendency of air bubbles to form in this area, The invention provides an X-ray machine anti-coolant superheat evaporation device.

As shown in Figure 1, the X-ray machine anti-coolant overheating evaporation device according to the present invention includes a fluid containing cavity, which is filled with a liquid coolant, and maintains liquid communication with the coolant inlet pipeline of the X-ray machine; The first container 7 is located above the fluid containing cavity, and is filled with liquid heavy metal, preferably mercury. The fluid containing cavity also includes a top membrane 5, located between the fluid containing cavity and the first container 7, and at least partially forms a movable diaphragm between the fluid containing cavity and the first container 7. a piston; a base 6 at the bottom of said fluid containing cavity; a membrane 4 connecting said top membrane 5 and base 6, said top membrane 5 and membrane 4 being mechanically flexible and cooling fluid impermeable membranes. Wherein, when the X-ray machine rotates around the system axis 2, the top film 5 exerts pressure on the liquid coolant, and the liquid coolant enters the cooling channel to cool the X-ray tube 1 . Because the first container 7 contains mercury, the mass becomes larger, the centrifugal force applied to the liquid coolant becomes larger, and the static pressure increases, which increases the boiling point of the liquid coolant and prevents the X-ray tube 1 from being cooled by the liquid. The agent is vaporized and overheated.

The anti-coolant overheating evaporation device of the X-ray machine also includes a second container 8, the bottom of which is connected to the bottom of the first container 7 through a flexible connecting pipe 9 and maintains liquid communication; a fixed rod 11, the The second container 8 is connected with the fixed rod 11 through the bolt 10, and can move up and down relative to the fixed rod 11; the driving mechanism 12 and the control module also include a temperature sensor, which is connected with the control module and detects the X-ray The temperature of the tube 1 is sensed, and the signal is transmitted to the control module; the control module receives the signal from the temperature sensor, and controls the driving mechanism 12 according to the temperature of the X-ray tube 1, and the driving mechanism 12 and The second container 8 is connected and drives the second container 8 to move up and down along the fixed rod 11; the driving mechanism 12 is a stepping motor.

The first container 7, the second container 8 and the flexible connecting pipe 9 between the two form a communicator, the inside of which is filled with mercury, and the temperature sensor senses the temperature of the X-ray tube 1, And transmit the signal to the control module, the control module receives the signal from the temperature sensor, and controls the driving mechanism 12 according to the temperature of the X-ray tube 1 to drive the second container 8 along the The fixed rod 11 moves up and down to adjust the position of the second container 8 on the fixed rod 11, then adjust the mass of mercury flowing into the first container 7, and change the centrifugal force exerted on the liquid coolant Size, change the static pressure, increase or decrease the boiling point of the liquid coolant as required, and prevent the coolant from overheating and evaporating.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (5)

1. The anti-coolant overheating evaporation device of the X-ray machine is characterized in that it includes: The fluid containing cavity is filled with a liquid coolant and is in liquid communication with the coolant inlet pipeline of the X-ray machine; The bottoms of the first container and the second container are connected by a flexible connecting pipe and kept in fluid communication. Both the first container and the second container are filled with liquid heavy metals, and the second container is adjusted on the fixed rod. The position is such that the liquid heavy metal in the first container increases the pressure on the liquid coolant, the first container is located above the fluid containing cavity, and the second container is connected to a fixed rod through bolts; A temperature sensor, which senses the temperature of the X-ray machine; a driving mechanism and a control module, the control module receives the signal from the temperature sensor and controls the driving mechanism, the driving mechanism is connected with the second container, drives the second container along the The fixed rod moves up and down. 2. The X-ray machine anti-coolant overheating evaporation device according to claim 1, wherein the fluid containing cavity comprises: a top membrane positioned between the fluid-containing cavity and the first container and at least partially forming a movable piston between the fluid-containing cavity and the first container; a base located at the bottom of the fluid containing cavity; membrane, connecting the top membrane and the base. 3. The X-ray machine anti-coolant overheating evaporation device according to claim 2, characterized in that, the top film and the film are mechanically flexible and impermeable to the coolant. 4. The anti-coolant overheating evaporation device for X-ray machine according to claim 1, characterized in that, the driving mechanism is a stepping motor. 5. The X-ray machine anti-coolant overheating evaporation device according to claim 1, wherein the liquid heavy metal is mercury.