CN213006736U - Heat shield force transmission device of hot isostatic pressing equipment and hot isostatic pressing equipment - Google Patents
Heat shield force transmission device of hot isostatic pressing equipment and hot isostatic pressing equipment Download PDFInfo
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- CN213006736U CN213006736U CN202020696350.7U CN202020696350U CN213006736U CN 213006736 U CN213006736 U CN 213006736U CN 202020696350 U CN202020696350 U CN 202020696350U CN 213006736 U CN213006736 U CN 213006736U
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Abstract
The utility model relates to a hot isostatic pressing equipment heat shield power transmission device and hot isostatic pressing equipment belongs to hot isostatic pressing equipment technical field, has solved the heat shield come-up in the prior art, leads to the temperature measurement signal to lose, problem that the technology is out of control. A heat shield force transmission device of a hot isostatic pressing device is arranged between the upper surface of a heat shield and an upper plug of the hot isostatic pressing device and comprises a support pillar, a spring and a mounting seat; the mounting seat is of a sleeve structure and is fixedly arranged on the upper surface of the heat shield; the support column is inserted into the mounting seat, and the upper end surface of the support column is abutted against the lower surface of an upper plug of the hot isostatic pressing equipment; the spring passes through the mount pad and the support column is installed at the heat shield upper surface, and it is spacing that the support column upper end is passed through to the upper end of spring, and it is spacing that the lower extreme of spring passes through sleeve bottom or heat shield upper surface. The force transmission device solves the problem that the heat shield in the hot isostatic pressing equipment floats upwards or inclines.
Description
Technical Field
The utility model relates to a hot isostatic pressing equipment technical field especially relates to a hot isostatic pressing equipment heat shield power transmission device.
Background
With the rapid development of the aerospace and military fields, the requirements on light, high-temperature resistant and high-performance structural materials are increasingly increased. The hot isostatic pressing technology is a process production technology integrating high temperature and high pressure, a workpiece to be processed is placed in a working chamber of hot isostatic pressing equipment in the production process, the workpiece is uniformly pressed and uniformly heated under the combined action of the high temperature and the high pressure, and a processed product has high density, good uniformity and excellent performance. Meanwhile, the technology has the characteristics of short production period, less working procedures, low energy consumption, small material loss and the like. Because of its own technological superiority, the hot isostatic pressing technology is not only a special technology for powder metallurgy near-net-shape forming, but also gradually expands into a plurality of production fields such as casting densification treatment, dissimilar material connection, complex special-shaped part manufacturing and the like.
And in the heating process of the hot isostatic pressing equipment, the heat conduction and gas circulation inside and outside the heat shield form a structure similar to a Kongming lantern. Along with the inside temperature rise of heat shield, the inside and outside difference in temperature of heat shield increases, and inside gas flows to the outside back rapid cooling of heat shield and leads to the inside and outside pressure differential that produces of heat shield. When the internal heating rate of the heat shield is too fast, and the buoyancy generated in the heat shield exceeds the self gravity of the heat shield, the heat shield in the inverted cup shape slightly floats or inclines, and a lower heating rate needs to be maintained for ensuring that the heat shield does not float, but the lower heating rate not only influences the hot isostatic pressing treatment effect, but also can lead to the extension of the heating time and the lengthening of the integral production rhythm of the equipment. At present, the domestic hot isostatic pressing equipment heat treatment market belongs to the supply and demand shortage stage, and the increase of the production cost caused by prolonging the production takt is not a little worth.
SUMMERY OF THE UTILITY MODEL
In view of foretell analysis, to the not enough among the prior art, the utility model aims at providing a hot isostatic pressing equipment heat shield power transmission device for when solving hot isostatic pressing equipment rate of rise of temperature too fast among the prior art, the heat shield come-up leads to the temperature measurement signal to lose, problem that the technology is out of control.
The utility model discloses a realize through following technical scheme:
a heat shield force transmission device of a hot isostatic pressing equipment is arranged between the upper surface of the heat shield and an upper plug of the hot isostatic pressing equipment;
the force transmission device comprises a support column, a spring and a mounting seat;
the mounting seat is of a sleeve structure and is fixedly arranged on the upper surface of the heat shield;
the support column is inserted into the mounting seat, and the upper end surface of the support column is abutted against the lower surface of an upper plug of the hot isostatic pressing equipment;
the spring passes through the mount pad and the support column is installed at the heat shield upper surface, and the upper end of spring is passed through the support column upper end is spacing, and the lower extreme of spring passes through sleeve bottom or the heat shield upper surface is spacing.
Further, the number of the force transmission means is plural.
Further, the plurality of force-conducting means are evenly distributed on more than two concentric circles on the upper surface of the heat shield.
Furthermore, the mounting seat is of a sleeve structure with a protruding extension at the lower end, the spring is mounted in the sleeve, the outer diameter of the spring is the same as the inner diameter of the sleeve, and the lower end of the support column is inserted into the spring.
Furthermore, the mounting seat is of a sleeve structure with a protruding extension at the lower end, the spring is sleeved outside the sleeve, the inner diameter of the spring is the same as the outer diameter of the sleeve, and the support column is inserted into the sleeve.
Furthermore, the support column is of a T-shaped structure and comprises a horizontal section and a vertical section; the upper end of the spring is limited by the lower surface of the horizontal section of the support column in the shape of T.
Further, the width of the horizontal section of the T-shaped support column is larger than the width of the upper end of the mounting seat, and the height of the vertical section of the T-shaped support column is smaller than the height of the mounting seat.
Further, the length of the spring in the natural state is larger than the height of the mounting seat.
Further, in the assembled state, the spring of the force transmission device is in a compressed state, and the upper surface of the support column abuts against the lower surface of the upper plug.
The utility model also provides a hot isostatic pressing equipment, including foretell hot isostatic pressing equipment heat shield power conduction device.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
1. the utility model provides a heat shield force transmission device of hot isostatic pressing equipment, which comprises a spring, a support column and a mounting seat; the force conduction device is arranged in a gap between an upper plug of the hot isostatic pressing equipment and the heat shield; under the assembly state, the spring of the force transmission device is in a compressed state, the force transmission device gives a downward force to the heat shield, the heat shield is controlled not to float upwards, the male head of the thermocouple at the lower end of the heat shield is connected with the female head of the thermocouple on the heat insulation pad, the temperature in the working cavity of the hot isostatic pressing equipment is monitored in real time, and the production process is controllable.
2. The utility model discloses be equipped with a plurality of power conduction devices at the heat screen upper surface, multiunit power conduction device evenly distributed is on the concentric circles more than two on the heat screen upper surface, and the power conduction device divide into inner circle and outer lane at the concentric circles more than two of heat screen upper surface distribution. Through inner circle and outer lane force conduction device evenly distributed, the even atress of heat shield upper surface guarantees that the heat shield can not take place the come-up or slope, prevents to take place the phenomenon of striking an arc, increases the life of hot isostatic pressing equipment, guarantees hot isostatic pressing equipment stability.
3. The utility model provides a power transmission device, mount pad welding are at the heat shield upper surface. The spring and the support column are fixed on the upper surface of the heat shield through the mounting seat, the heat shield is mounted at one time and used permanently, and the production process cannot be increased for hot isostatic pressing treatment.
4. The utility model provides a hot isostatic pressing equipment heat shield power transmission device, power transmission device assemble in the heat shield top, do not exert an influence to the circulation of gas in the equipment, guarantee that the circulation of gas is smooth and easy, guarantee hot isostatic pressing technological effect, realize good heating and cooling effect in the hot isostatic pressing equipment.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
FIG. 1 is a schematic view of a simplified partial structure of a hot isostatic pressing apparatus according to the present invention;
fig. 2 is a schematic view of the force transmission structure of the force transmission device of the present invention;
FIG. 3 is a schematic top view of the force transmitting structure of the force transmitting device of the present invention in relation to the heat shield;
fig. 4 is a schematic view of the force transmission structure of the force transmission device according to the present invention and the position relationship of the heat shield.
Drawings
1-plugging; 2-outer wall; 3-a heat shield; 4-side wall heating means; 5-a base; 6-heat insulation pad; 7-a force transmission means; 8-a mounting seat; 9-a spring; 10-support column.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
The utility model discloses a heat shield force transmission device of hot isostatic pressing equipment, as shown in figure 2, the heat shield force transmission device of hot isostatic pressing equipment is installed between the upper surface of a heat shield 3 and an upper plug 1 of the hot isostatic pressing equipment, and comprises a support column 10, a spring 9 and a mounting seat 8; the mounting seat 8 is of a sleeve structure, and the mounting seat 8 is fixedly arranged on the upper surface of the heat shield; the support column 10 is inserted into the mounting seat 8, and the upper end surface of the support column 10 is abutted against the lower surface of the upper plug 1 of the hot isostatic pressing equipment; spring 9 passes through mount pad 8 and support column 10 and installs in heat screen 3 upper surface, and it is spacing that support column 10 upper end is passed through to spring 9's upper end, and it is spacing that sleeve bottom or heat screen 3 upper surface are passed through to spring 9's lower extreme.
The force transmission device solves the problem that the heat shield in the hot isostatic pressing equipment floats upwards or inclines. The supporting column 10 can increase the contact area of the force transmission device and the upper plug, and relieve the stress concentration at the contact position of the force transmission device 7 and the upper plug 1.
In order to increase the area of contact between force transmission device 7 and the upper plug 1, support column 10 establishes to the T style of calligraphy, including horizontal segment and vertical section, and the horizontal segment and the vertical section of T style of calligraphy are the cylinder, upper end cylinder and lower extreme cylinder promptly, and the cylindrical diameter in upper end of support column 10 is greater than the cylindrical diameter in lower extreme, and the lower surface of the upper end of spring through support column 10 horizontal segment is spacing.
In one possible design, the mounting seat 8 is a sleeve structure with a convex extension at the lower end, the spring 9 is installed in the sleeve of the mounting seat, the outer diameter of the spring is the same as the inner diameter of the sleeve of the mounting seat, and the supporting column 10 is inserted into the spring 9. The lower end of the mounting seat sleeve is provided with a bottom or is not provided with a bottom, when the sleeve is not provided with a bottom, the lower end of the spring is limited through the upper surface of the heat shield, and the upper end of the spring is limited through the lower surface of the horizontal section of the support column 10; when the sleeve has a bottom, the lower end of the spring is limited through the bottom surface of the sleeve, and the upper end of the spring is limited through the lower surface of the horizontal section of the support column 10. Before assembly, the mounting seat 8 is fixedly mounted on the upper surface of the heat shield 3, the spring 9 is mounted on the heat shield through the bottom mounting seat 8, the mounting seat 8 plays a role in fixing the spring, and the support column 10 is inserted into the spring; after assembly, the supporting column 10 is in contact with the upper plug 1, the supporting column can increase the contact area of the force transmission device and the upper plug, and stress concentration at the contact position of the force transmission device and the upper plug is relieved. It is worth noting that the length of the supporting column 10 is smaller than that of the spring 9, so that when the force transmission device is in contact with the upper plug, the supporting column moves downwards under the action of the pressure of the upper plug, the spring contracts under the action of the supporting column, the elastic force generated by the contraction of the spring gives a downward force to the heat shield, the upward floating of the heat shield can be controlled by the downward force, the effective transmission of a heat signal is guaranteed, and the controllability of a production process is further guaranteed.
In order to fix the spring 9, the diameter of the lower end cylinder of the supporting column 10 is smaller than the inner diameter of the spring 9, the outer diameter of the spring 9 is the same as the inner diameter of the mounting seat 8, the supporting column 10 is placed in the spring 9, and the supporting column 10 and the spring 9 are installed in the mounting seat 8 in a combined mode.
In another possible design, the mounting seat 8 is a sleeve structure with a protruding extension at the lower end, the spring 9 is sleeved on the sleeve, the inner diameter of the spring is the same as the outer diameter of the sleeve, the supporting column 10 is inserted into the sleeve, the lower end of the spring is limited by the protruding extension on the upper surface of the heat shield or/and the lower part of the sleeve, and the upper end of the spring is limited by the lower surface of the horizontal section of the supporting column 10.
It should be noted that, a force transmission device with a spring is arranged between the heat shield and the upper plug of the hot isostatic pressing device, when the hot isostatic pressing device is implemented, the spring is in a compression state, a downward force is given to the heat shield, the heat shield is controlled to float upwards through the downward force, effective transmission of a heat signal in the hot isostatic pressing device is ensured, and real-time temperature monitoring in a working cavity is realized.
For satisfying the dress and get the convenient and quick radiating demand of hot isostatic pressing processing later stage frock of feeding of frock of feeding, there is the annular clearance between heat shield and the heat shield lower extreme heat insulating mattress. In the process of heating up and boosting the pressure of hot isostatic pressing equipment, due to the improvement of heating capacity and heat preservation capacity, pressure difference exists between the inside and the outside of the heat insulation screen during heating to generate buoyancy, the heat insulation screen slightly floats upwards, the thermocouple male head at the lower end of the heat insulation screen is disconnected with the thermocouple female head on the heat insulation pad, the actual measurement temperature of the thermocouple cannot be read, and the hot isostatic pressing process is out of control. Through the heat shield with go up the stopper setting and have the power conduction device of spring, during the implementation, the spring is compression state, gives a decurrent power of heat shield, through this decurrent power, controls the heat shield come-up, guarantees the effectual conduction of heat signal in the hot isobaric equipment, and then realizes the real-time temperature monitoring to the work intracavity.
Before the stove is loaded, 8 fixed mounting of mount pad are on 3 upper surfaces of heat screen, and spring 9 covers at 8 surfaces of mount pad, and spring 9 passes through the mount pad bottom and installs on the heat screen, and mount pad 8 plays the fixed action to spring 9, and support column 10 inserts in mount pad 8. After the furnace is charged, the supporting column 10 is in contact with the upper plug 1, the supporting column 10 increases the contact area of the force transmission device 7 and the upper plug 1, and stress concentration of the contact position of the force transmission device and the upper plug is relieved. It is worth noting that the length of the supporting column 10 is smaller than that of the spring 9, so that when the force transmission device 7 is in contact with the upper plug 1, the supporting column moves downwards, the spring contracts to a certain extent under the action of the supporting column, the elastic force generated by the contraction of the spring provides a downward force for the heat shield, the heat shield is controlled to float upwards through the force, effective transmission of a heat signal is guaranteed, and the controllability of a hot isostatic pressing production process is further guaranteed.
The utility model discloses a specific embodiment, 1400 ℃ and 150MPa pressure heat preservation 4h under the full load condition of RD1250 type hot isostatic pressing equipment, the heat shield top air temperature is about 180 ℃. In order to ensure that the force transmission device can normally work under the high-temperature and high-pressure conditions when the hot isostatic pressing equipment works, the spring 9 is made of 30W4Cr2V, and the maximum working temperature of the spring is 500 ℃. A pressure measuring device is added outside the heat shield, and through measurement, the heat shield floats upwards when the pressure difference between the inside and the outside of the heat shield reaches 12.7KPa when the hot isostatic pressing equipment works at full load. It should be noted that when the heat shield floats upwards or inclines, a slight gap exists in the connecting device at the lower end of the heat shield, which may cause arcing of the electrode at the lower end of the heat shield, not only affect the current output of the hot isostatic pressing equipment, but also cause deformation and even damage of the electrode. The utility model discloses a circumference evenly distributed's power conduction device can guarantee that the heat screen top atress is even, guarantees that the heat screen can not take place come-up or slope, prevents that the phenomenon of striking an arc from taking place, increases the life of hot isostatic pressing device inner part, guarantees equipment stability and accuracy. And the sectional area of the force transmission device is negligible relative to the sectional area of the upper end of the heat shield, and the flow of gas is not influenced.
The utility model discloses a hot isostatic pressing equipment heat shield power transmission device, hot isostatic pressing equipment is shown as figure 1, and hot isostatic pressing equipment includes hot isostatic pressing equipment cavity, goes up stopper 1, heat shield 3, power transmission device 7, lateral wall heating device 4 and heat insulating mattress 6. The hot isostatic pressing equipment chamber comprises an equipment outer wall 2 and a base 5, wherein the outer wall 2 and the base 5 form a hot isostatic pressing equipment working chamber. The hot isostatic pressing equipment chamber is of a U-shaped cylindrical structure, the upper plug 1 is arranged at the upper end of the outer wall 2, the diameter of the upper plug 1 is the same as the inner diameter of the upper end of the outer wall 2, and the heat shield 3 is in an inverted cup shape. The force transmission means 7 is mounted between the upper surface of the heat shield 3 and the upper plug 1 of the hot isostatic pressing apparatus. The inner diameter of the base 5 is smaller than the inner diameter of the heat shield 3, the heat shield 3 is arranged on the base 5 of the hot isostatic pressing equipment chamber, a heat insulation pad 6 is arranged between the lower end face of the heat shield and the base 5 of the hot isostatic pressing equipment chamber, and the width of the heat insulation pad 6 is the same as the wall thickness of the heat shield 3. The inner side wall of the heat shield is provided with a side wall heating device 4.
It is worth noting that in order to realize real-time temperature monitoring of the hot isostatic pressing equipment on the workpiece, the lower end of the heat shield is provided with a temperature sensing device (a thermocouple male head), the heat shield pad is provided with a thermocouple female head, and the temperature sensing device (the thermocouple male head) at the lower end of the heat shield is connected with the thermocouple female head on the heat shield pad. Real-time temperatures of different positions in the loading tool are monitored through a temperature control system in the hot isostatic pressing equipment, and the process performability is guaranteed.
In the hot isostatic pressing equipment course of operation, because hot isostatic pressing equipment during operation is high temperature high pressure environment, the heat shield is under high temperature high pressure effect, and the buoyancy that the heat shield receives is greater than heat shield self gravity, and the heat shield takes place to incline or come-up, and the public head of thermocouple and the female first disconnect-type of thermocouple, temperature control system can't read thermocouple actual measurement temperature, and hot isostatic pressing equipment can't normally read the operating temperature in the working chamber, leads to the hot isostatic pressing technology inefficacy. The inclination of the heat shield can also cause the arcing phenomenon at the bottom of the heat shield, resulting in the damage of the electrode.
In order to solve the problem, the utility model discloses design power conduction device 7 is located in the clearance of stopper and heat screen. The force-conducting means 7 is located in relation to the heat shield 3 as shown in fig. 3 and 4. The main functional structure of force conduction device is spring 9, and spring 9 passes through installation base 8 to be installed on heat shield 3, and mount pad 8 plays the fixed stay effect to spring 9, inserts support column 10 in the spring 9, and during equipment work, support column 10 and last stopper 1 contact, support column 10 increase force conduction device and the area of contact of last stopper slow down force conduction device and last stopper contact position stress concentration.
Before the force transmission device 7 is mounted, the spring 9 is in a naturally extended state. During installation, the hot isostatic pressing equipment firstly arranges the charging tool in the cavity of the hot isostatic pressing equipment through the lifter, the heat insulation screen is covered outside the charging tool, the force transmission device is fixed on the outer surface of the heat insulation screen, the upper plug with the sealing device is finally covered, and after the installation is finished, the spring in the force transmission device is in a compressed state. The spring in a compressed state provides a downward force for the heat shield in the gap between the upper plug and the heat shield, the downward force controls the heat shield to float upwards, and the thermocouple male head below the heat shield is connected with the thermocouple female head above the heat shield, so that effective conduction of a heat signal is ensured, and the controllability of a hot isostatic pressing production process is ensured.
In order to ensure the tightness of the hot isostatic pressing equipment, a sealing structure is arranged in the upper plug; in order to ensure the heating function of the hot isostatic pressing equipment, a heating device is arranged on the base, a side wall heating device 4 is arranged on the inner side of the heat shield, and a heat insulation pad is arranged at the bottom of the outer wall of the equipment; in order to ensure the gas exchange and cooling functions of the hot isostatic pressing equipment, the outer wall is provided with a cooling structure, and the base and the upper plug are also provided with the cooling structure. The utility model discloses a gaseous smoothness between heat shield and the last stopper can be guaranteed to power transmission device, the cooling effect of hot isostatic pressing equipment is guaranteed.
Different among the prior art, the utility model provides a power transmission device can also guarantee the circulation of gas between heat screen and the last stopper except having the control heat screen come-up, and for the heat screen, power transmission device 7 occupies that heat screen surface area is less, does benefit to the air convection exchange between heat screen and the last stopper, does benefit to work piece hot isostatic pressing heating and cooling process.
In order to control the heat shield come-up, realize the real-time temperature monitoring to hot isostatic pressing equipment work intracavity, the utility model discloses set up more than a set of heat shield power conduction device on the heat shield, the utility model discloses a specific embodiment sets up 15 groups power conduction device on the heat shield, and each group heat shield power conduction device applys the same decurrent power to the heat shield, and these 15 groups decurrent power are applyed on the heat shield, and the come-up of control heat shield guarantees the public head of thermocouple and the female first connection of thermocouple, realizes the normal monitoring to each position of hot isostatic pressing equipment. Good heating and cooling effect in order to guarantee the gas flow of well stopper and heat screen in the hot isostatic pressing equipment, realize hot isostatic pressing equipment, the utility model discloses well a plurality of power conduction devices establish to two circles on the heat screen, inner circle and outer lane two circles promptly, the power conduction device circumference evenly distributed in the heat screen upper surface of inner circle and outer lane. The number of the outer ring force transmission devices is larger than or equal to that of the inner ring force transmission devices, so that the heat shield is uniformly stressed.
It should be noted that, in the above specific embodiment, 9 sets of force transmission devices are uniformly installed in the circumferential direction of the outer ring, and the angle between two adjacent sets of force transmission devices and the center of the circle is 40 °. 6 groups of force conduction devices are uniformly arranged in the circumferential direction of the inner ring, the angles between the adjacent two groups of force conduction devices and the circle center are 60 degrees, the stress above the heat shield is ensured to be uniform through the structure that a plurality of groups of force conduction devices are uniformly distributed in the circumferential direction of the concentric outer ring and the concentric inner ring, the heat shield is prevented from floating or inclining, the bottom end of the heat shield is ensured to be in good contact with the heat shield, and the arcing phenomenon can not occur.
Example 1
The utility model provides a hot isostatic pressing equipment heat shield power transmission device, power transmission device schematic structure is shown in figure 2, including spring 9, connecting spring 9 and heat shield 3's mount pad 8 and increase spring 9 and the support column 10 of upper plug 1 area of contact. The positional relationship between the force transmission device 7 and the heat shield 3 is schematically shown in fig. 3 in a top view, and the positional relationship between the force transmission device 7 and the heat shield 3 is schematically shown in fig. 4 in a front view.
The embodiment of the utility model provides an in, design 15 group's power transmission device 7, power transmission device 7 includes: spring 9, spring 9 are installed on heat shield 3 through bottom mount pad 8, and mount pad 8 plays the fixed action to spring 9. The supporting column 10 is inserted into the spring 9, the supporting column 10 is contacted with the upper plug 1 after charging, the supporting column 10 can increase the contact area of the force transmission device and the upper plug, and the stress concentration of the contact position of the force transmission device and the upper plug is relieved.
The embodiment is applied to the RD1250 hot isostatic pressing equipment, and the diameter of the effective space inside the heat shield is 1250 mm. The maximum working temperature is 1400 ℃ when the RD1250 is fully loaded, the maximum working pressure is 150MPa, the heat preservation time is 4 hours, the air temperature above the heat shield is about 180 ℃, the self weight of the heat shield is 2.0T, the maximum temperature rise rate is 5K/s, and through calculation, under the condition of full load, the heat shield is controlled not to float upwards and the downward force of 9KN needs to be applied to the heat shield by the force transmission device in consideration of the heat stress loss of the spring heated along with the furnace in the force transmission device. The clearance between the upper plug 1 and the heat shield 3 after the hot isostatic pressing equipment is loaded is about 100 mm. The utility model discloses used spring 9 length 130 mm. After charging, the spring 9 is compressed to 100mm, and through calculation, the spring in each group of force transmission devices 7 can be stressed by 800N, and the total of 15 groups of force transmission devices at normal temperature is 12 KN. The force is transmitted to the heat shield, the heat shield is controlled not to float upwards, and the real-time temperature of each position in the charging tool can be accurately read through the heat sensing device. The 15 groups of force transmission devices are designed into an inner ring and an outer ring according to the size of the heat shield, 9 groups of outer rings and 6 groups of inner rings, so that the circumferential uniform stress of the heat shield is ensured, and the phenomenon of arc striking caused by the inclination of the heat shield due to uneven stress is prevented. The normal circulation of gas in the hot isostatic pressing equipment can not be influenced. The force transmission device is arranged on the heat shield, so that the charging time is saved, the production beat is shortened, and the process cost is reduced.
Example 2
Example 2 the same heat shield arrangement as in example 1 was used, except that in example 2 the heat shield applied to the RD1250 hot isostatic pressing apparatus had a diameter of 1350mm, a self weight of 2.2T and a maximum rate of temperature rise at full load of 4.8K/s, unlike in example 1. The distance between the heat shield and the upper plug is 90 mm. Through calculation, the spring loss after the spring is heated is considered, the heat shield is controlled not to float, and about 7.5KN downward force needs to be applied to the heat shield. The method is characterized in that a spring with the diameter of being 110mm is selected, the effective number of turns is 5, the wire diameter of the spring is 8mm, the outer ring is straight by 70mm, calculation is carried out, a single group of force conduction devices can generate 674N, 14 groups of force conduction devices, 6 groups of inner rings and 8 groups of outer rings for the heat shield at normal temperature and normal pressure, and downward force of about 9.4KN can be provided for the heat shield. The force transmission device is installed on the heat shield, and the floating requirement of the heat shield is met.
It is pointed out that the utility model discloses can be according to the required buoyancy size regulating spring's of heat shield thickness, length, the number of turns. The utility model provides a force transmission device arranges and sets for the concrete atress condition when the equipment that synthesizes to consider when implementing uses, and any similar structure of changing or replacing all should be covered in this patent protection scope.
It should be noted that, in the present invention, a set of force transmission device composed of a single mounting seat, a single spring and a single supporting column is 1 set of force transmission device, and can also be understood as 1 force transmission device.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A heat shield force transfer arrangement for a hot isostatic pressing apparatus, wherein the force transfer arrangement is mounted between an upper surface of the heat shield and an upper plug of the hot isostatic pressing apparatus;
the force transmission device comprises a support column, a spring and a mounting seat;
the mounting seat is of a sleeve structure and is fixedly mounted on the upper surface of the heat shield;
the supporting column is inserted into the mounting seat, and the upper end surface of the supporting column is abutted against the lower surface of an upper plug of the hot isostatic pressing equipment;
the spring passes through the mount pad with the support column is installed the heat shield upper surface, the upper end of spring passes through the support column upper end is spacing, it is spacing that the lower extreme of spring passes through sleeve bottom or heat shield upper surface.
2. The hot isostatic pressing apparatus heat shield force conducting device according to claim 1, wherein the number of force conducting devices is plural.
3. The hot isostatic pressing apparatus heat shield force conducting device according to claim 2, wherein the plurality of force conducting devices are evenly distributed on more than two concentric circles on the upper surface of the heat shield.
4. The hot isostatic pressing apparatus heat shield force transfer device of claim 1, wherein the mounting seat is a sleeve structure with a lower end having a protrusion, the spring is mounted in the sleeve, the spring has an outer diameter equal to an inner diameter of the sleeve, and the lower end of the support post is inserted into the spring.
5. The hipping equipment heat shield force transducer of claim 1, wherein the mount is a sleeve structure with a protrusion at the lower end, the spring is sleeved outside the sleeve, the inner diameter of the spring is the same as the outer diameter of the sleeve, and the support column is inserted into the sleeve.
6. The hot isostatic pressing equipment heat shield force transmission device according to claim 1, wherein the support column is of a T-shaped structure comprising a horizontal section and a vertical section; the upper end of the spring is limited through the lower surface of the horizontal section of the T-shaped support column.
7. The hot isostatic pressing apparatus heat shield force transfer device of claim 6, wherein the horizontal section of the T-shaped support column has a width greater than the width of the upper end of the mounting seat, and the vertical section of the T-shaped support column has a height less than the height of the mounting seat.
8. The hot isostatic pressing apparatus heat shield force transfer device of claim 7, wherein the spring has a natural length greater than the height of the mount.
9. The hot isostatic pressing apparatus heat shield force conducting device according to claim 1, wherein in the assembled state, the spring of the force conducting device is in a compressed state, and the upper surface of the support column abuts against the lower surface of the upper plug.
10. A hot isostatic pressing apparatus, comprising a heat shield force conducting arrangement of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020696350.7U CN213006736U (en) | 2020-04-29 | 2020-04-29 | Heat shield force transmission device of hot isostatic pressing equipment and hot isostatic pressing equipment |
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| CN202020696350.7U CN213006736U (en) | 2020-04-29 | 2020-04-29 | Heat shield force transmission device of hot isostatic pressing equipment and hot isostatic pressing equipment |
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| CN213006736U true CN213006736U (en) | 2021-04-20 |
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| Country | Link |
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| CN (1) | CN213006736U (en) |
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2020
- 2020-04-29 CN CN202020696350.7U patent/CN213006736U/en active Active
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