A warm isostatic pressing apparatus system

Abstract

The utility model discloses a kind of warm isostatic pressing equipment systems, belong to warm isostatic pressing equipment technical field, the system includes high-pressure bin, mould temperature machine body and 600 mega high-pressure pump, system further includes superhigh pressure throttle valve, small hole pressure relief valve, third pressure relief valve, pressure relief oil tank, heat exchanger, water chiller, low-temperature oil tank, diaphragm pump and mould temperature machine expansion oil tank, the superhigh pressure throttle valve is connected in series on the pressure relief main pipe of the high-pressure bin, the small hole pressure relief valve and the third pressure relief valve are connected in parallel downstream of the superhigh pressure throttle valve, the third pressure relief valve communicates the pressure relief oil tank, the pressure relief oil tank communicates the heat exchanger.The utility model solves the problem that existing technology in pressure relief impact is big, high-temperature heat transfer oil lacks automated cooling recovery closed-loop system, realizes safe and stable decompression, and realizes heat transfer oil efficient cooling and automated recycling.

Description

Technical Field

[0001] This utility model relates to the field of isostatic pressing equipment technology, and in particular to a temperature isostatic pressing equipment system. Background Technology

[0002] Thermostatic pressing (WPS) is an advanced material processing technology that uses a high-temperature and high-pressure inert gas or liquid medium to apply uniform pressure to materials from all directions to achieve densification or molding. It has wide applications in food processing, high-temperature structural ceramics, and hard alloys.

[0003] In isostatic pressing systems, liquid media such as heat transfer oil not only serve as heat transfer carriers but also as pressure transmission media. Their working state directly affects the final product quality and equipment safety.

[0004] In existing isostatic pressing equipment, after the pressure holding stage, the high-temperature and high-pressure heat transfer oil in the high-pressure chamber needs to be depressurized and cooled. During this process, the speed and method of depressurization are crucial. If the depressurization is too fast, the instantaneous release of high-pressure oil will cause a huge hydraulic shock to the pipelines, valves, and oil tank of the entire system, which may lead to component damage and safety hazards. In addition, the depressurized heat transfer oil carries a large amount of heat energy. Many existing equipment systems do not handle the cooling and recovery of this high-temperature oil well enough, or the cooling efficiency is low, or the recovery circuit is incomplete, resulting in a large amount of heat energy being wasted and heat transfer oil loss. This not only increases the operating energy consumption and production cost of the equipment, but also makes it necessary to improve the automation level and operational stability of the system.

[0005] Therefore, this utility model proposes a thermostatic pressure equipment system to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the warm isostatic pressing equipment system, such as large pressure relief impact, lack of automated cooling and recovery closed-loop system for high temperature heat transfer oil, resulting in high energy consumption and unstable operation, this utility model aims to provide a warm isostatic pressing equipment system with improved structure that can effectively solve the above problems.

[0007] This utility model provides a thermostatic pressure equipment system, including: a high-pressure chamber, a mold temperature controller body, and a 600M high-pressure pump.

[0008] The isostatic pressure equipment system also includes: an ultra-high pressure throttling valve, a small-hole pressure relief valve, a third pressure relief valve, a pressure relief oil tank, a heat exchanger, a chiller, a low-temperature oil tank, a diaphragm pump, and a mold temperature controller expansion oil tank.

[0009] The ultra-high pressure throttle valve is connected in series with the main pressure relief pipe of the high pressure chamber, and the small-hole pressure relief valve and the third pressure relief valve are connected in parallel downstream of the ultra-high pressure throttle valve. This multi-stage valve combination is used to achieve graded pressure relief.

[0010] Furthermore, the outlet of the third pressure relief valve is connected to the pressure relief oil tank, the oil outlet of the pressure relief oil tank is connected to the heat medium inlet of the heat exchanger, the chiller and the heat exchanger form a cooling water circulation system for forced cooling of the high-temperature oil, the heat medium outlet of the heat exchanger is connected to the low-temperature oil tank, the outlet of the low-temperature oil tank is connected to the inlet of the diaphragm pump, the outlet of the diaphragm pump is connected to the expansion oil tank of the mold temperature controller, and the expansion oil tank of the mold temperature controller is connected to the mold temperature controller body. The above components together constitute a complete cooling and recovery circuit.

[0011] Preferably, the outlet branch of the small-hole pressure relief valve is connected to the circuit of the mold temperature controller body. This structure allows a portion of the high-temperature and high-pressure oil to be smoothly guided back to the heating system in the initial stage of pressure relief, thus helping to achieve a smooth pressure reduction.

[0012] Preferably, the isostatic pressing equipment system further includes a closed oil tank, an ultra-high pressure coil, and a ball valve. The mold temperature controller body and the closed oil tank form a heating circuit. The outlet of the heating circuit is connected to the high-pressure chamber in series with the ultra-high pressure coil and the ball valve, providing a stable and controllable heating source for the high-pressure chamber.

[0013] Preferably, a check valve and a one-way valve are connected in series on the pressurization pipeline between the 600 MW high-pressure pump and the high-pressure chamber. The check valve and the one-way valve ensure that the high-pressure medium does not flow back during the pressurization and pressure holding process, thus ensuring the pressure stability of the system.

[0014] Preferably, an oil pump and a throttle valve body are connected in series on the recovery pipeline between the diaphragm pump and the expansion tank of the mold temperature controller. The oil pump provides auxiliary power for the recovery of cooled oil, and the throttle valve body is used to precisely control the flow rate of oil returning to the expansion tank of the mold temperature controller.

[0015] Preferably, the high-pressure chamber has a circulation channel between the outer wall and the inner cavity, and the mold temperature controller body is connected to the inlet of the circulation channel through a heating pipe, so that high-temperature heat transfer oil can uniformly and efficiently heat or replenish the temperature of the high-pressure chamber body through the circulation channel.

[0016] Preferably, the isostatic pressing system further includes a first pressure relief valve and a second pressure relief valve, which are disposed on the heating pipeline between the mold temperature controller body and the high-pressure chamber.

[0017] More preferably, the first pressure relief valve and the second pressure relief valve are connected in parallel on the bypass pipeline for low-pressure circulating heating. The bypass pipeline is connected between the oil inlet and the oil outlet of the heating pipeline of the high-pressure chamber. This structure is used to achieve low-pressure preheating circulation before formal pressurization.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problems of large pressure relief impact, difficulty in recovering high-temperature heat transfer oil, and serious heat waste in the prior art by setting up a staged pressure relief structure consisting of an ultra-high pressure throttling valve, a small-hole pressure relief valve, and a third pressure relief valve, and by setting up a cooling recovery closed loop consisting of a pressure relief oil tank, a heat exchanger, a chiller, a low-temperature oil tank, a diaphragm pump, and a mold temperature controller expansion oil tank. It achieves the technical effect of safe and stable pressure reduction and realizes efficient cooling and automated recycling of heat transfer oil.

[0019] 2. This utility model, by setting a first pressure relief valve and a second pressure relief valve, preheats and replenishes the high-pressure chamber in a low-pressure circulation mode before pressurization, which solves the problems of uneven heating of the high-pressure chamber or large temperature fluctuations after loading in the prior art, and achieves the technical effect of ensuring uniform temperature of the high-pressure chamber and improving process stability.

[0020] 3. This utility model solves the problem of unstable pressure or difficulty in synchronously controlling temperature and pressure during the pressurization stage in the prior art by setting a check valve and a one-way valve on the pressurization pipeline and making the high-pressure pump work in coordination with the mold temperature controller. It achieves the technical effect of realizing synchronous control of thermal isostatic pressure and ensuring the safety and reliability of the pressurization process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a thermostatic pressure equipment system proposed in this utility model.

[0022] Legend: 1. High-pressure chamber; 2. Mold temperature controller body; 3. Sealed oil tank; 4. Chiller; 5. 600M high-pressure pump; 6. Low-temperature oil tank; 7. Pressure relief oil tank; 8. Diaphragm pump; 9. Oil pump; 10. Heat exchanger; 11. Throttling valve body; 12. Mold temperature controller expansion oil tank; 13. Ultra-high pressure coil; 14. Check valve; 15. One-way valve; 16. First pressure relief valve; 17. Second pressure relief valve; 18. Ultra-high pressure throttling valve; 19. Small orifice pressure relief valve; 20. Third pressure relief valve; 21. Ball valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please refer to Figure 1 This utility model provides a thermostatic pressure equipment system, which aims to solve the problems of large impact during the depressurization process and lack of an automated cooling and recovery closed-loop system for high-temperature heat transfer oil in the prior art.

[0025] like Figure 1 As shown, the isostatic pressing system includes a high-pressure chamber 1, a mold temperature controller 2 connected to the high-pressure chamber 1, and a 600 MW high-pressure pump 5 connected to the high-pressure chamber 1. The high-pressure chamber 1 provides a high-temperature and high-pressure processing environment, the mold temperature controller 2 heats the heat transfer oil, and the 600 MW high-pressure pump 5 pressurizes the high-pressure chamber 1. The system also includes a complete staged pressure relief and cooling recovery system, which includes an ultra-high pressure throttle valve 18, a small-hole pressure relief valve 19, a third pressure relief valve 20, a pressure relief oil tank 7, a heat exchanger 10, a chiller 4, a low-temperature oil tank 6, a diaphragm pump 8, and a mold temperature controller expansion tank 12. These components together form a closed loop for safe pressure reduction and media circulation. The ultra-high pressure throttle valve 18 is connected in series with the pressure relief main pipe of the high-pressure chamber 1 to precisely control the pressure relief flow. The small-hole pressure relief valve 19 and the third pressure relief valve 20 are connected in parallel with the ultra-high pressure throttle valve 18. Downstream, for step-by-step pressure relief, in the cooling recovery path, the outlet of the third pressure relief valve 20 is connected to the pressure relief oil tank 7, and the oil outlet of the pressure relief oil tank 7 is connected to the heat medium inlet of the heat exchanger 10. The chiller 4 and the heat exchanger 10 form a cooling water circulation. Specifically, the cooling water outlet of the chiller 4 is connected to the cooling water inlet of the heat exchanger 10, and the cooling water outlet of the heat exchanger 10 is connected to the cooling water return inlet of the chiller 4, for forced cooling of the hot oil entering the heat exchanger 10. The heat medium outlet of the heat exchanger 10 is connected to the low-temperature oil tank 6, which is used to store the cooled oil. The outlet of the low-temperature oil tank 6 is connected to the inlet of the diaphragm pump 8, and the outlet of the diaphragm pump 8 is connected to the expansion oil tank 12 of the mold temperature controller. Finally, the expansion oil tank 12 of the mold temperature controller is connected to the mold temperature controller body 2, thereby sending the cooled heat transfer oil back to the heating system, forming a complete automated closed loop.

[0026] The system also includes a closed oil tank 3, an ultra-high pressure coil 13, and a ball valve 21. The mold temperature controller body 2 and the closed oil tank 3 form a heating circuit for initial heating and storage of the heat transfer oil. The outlet of the heating circuit is connected to the high-pressure chamber 1 via the ultra-high pressure coil 13 and the ball valve 21 in series. The ultra-high pressure coil 13 is wound around or placed outside the high-pressure chamber 1 or in a specific channel to achieve efficient heat exchange between the high-temperature heat transfer oil and the high-pressure chamber 1. The ball valve 21 acts as a pipeline switch to control the on / off of the high-temperature heat transfer oil entering the high-pressure chamber 1.

[0027] A pressurization pipeline is provided between the 600 MW high-pressure pump 5 and the high-pressure chamber 1. A check valve 14 and a one-way valve 15 are connected in series on the pressurization pipeline. Both the check valve 14 and the one-way valve 15 are used to prevent the oil in the high-pressure chamber 1 from flowing back to the 600 MW high-pressure pump 5 during the pressurization or pressure holding process, so as to ensure the stability and safety of the system pressure.

[0028] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to achieve a smooth return of high-temperature oil in the initial stage of pressure relief, the outlet branch of the small-hole pressure relief valve 19 is connected to the circuit of the mold temperature controller body 2. When the pressure relief process begins, a portion of the high-temperature and high-pressure oil is precisely guided back to the heating system through the small-hole pressure relief valve 19, avoiding a sudden pressure drop and achieving a smooth pressure reduction.

[0029] As another preferred embodiment, in order to enhance the recovery capacity of the cooling oil and control the return flow rate, an oil pump 9 and a throttle valve body 11 are connected in series on the recovery pipeline between the diaphragm pump 8 and the mold temperature controller expansion tank 12. The oil pump 9 provides auxiliary power for the oil return flow to ensure that the recovery pipeline is unobstructed, while the throttle valve body 11 is used to precisely adjust the flow rate of the oil returning to the mold temperature controller expansion tank 12 to maintain system balance.

[0030] As a further preferred embodiment, in order to realize the low-pressure circulation preheating function of the high-pressure chamber 1, the system also includes a first pressure relief valve 16 and a second pressure relief valve 17. These two valves are connected in parallel on the bypass pipeline for low-pressure circulation heating. The bypass pipeline is connected between the oil inlet and oil outlet of the heating pipeline of the high-pressure chamber 1. During the preheating stage, by opening the first pressure relief valve 16 and the second pressure relief valve 17, a low-pressure circulation loop is formed, so that the high-temperature heat transfer oil circulates only outside the high-pressure chamber 1.

[0031] As a further preferred embodiment, in order to achieve uniform heating of the high-pressure chamber 1, the high-pressure chamber 1 has a circulation channel between the outer wall and the inner cavity. The mold temperature controller body 2 is connected to the inlet of the circulation channel through a heating pipe. High-temperature heat transfer oil flows in the circulation channel and the heat is evenly transferred to the entire chamber of the high-pressure chamber 1 through heat conduction.

[0032] The working principle of the thermostatic pressure equipment system of this utility model is as follows: In the initial stage of system operation, the mold temperature controller 2 starts up to heat the heat transfer oil in the sealed oil tank 3, gradually raising its temperature to the process temperature. The heated heat transfer oil is then transported to the circulation channel outside the high-pressure chamber 1 through the pipeline consisting of the ultra-high pressure coil 13 and the ball valve 21 for circulation. At this time, the first pressure relief valve 16 and the second pressure relief valve 17 are opened, used only for low-pressure circulation heating, so that the overall temperature of the high-pressure chamber 1 rises evenly until the process requirements are met. After the high-pressure chamber 1 reaches the set temperature, it is resealed after being filled with material, and the mold temperature controller 2 and the heat transfer oil circulation system are restarted for heat replenishment.

[0033] Once the high-pressure chamber 1 reaches the set temperature, the 600 MW high-pressure pump 5 starts and delivers heat transfer oil to the high-pressure chamber 1 through the pressurization pipeline for pressurization. During the pressurization process, the check valve 14 and the one-way valve 15 on the pressurization pipeline prevent oil backflow and ensure that the pressure rises steadily. When the pressure reaches the preset value, the mold temperature controller 2 restarts to continue heating and heat preservation of the system. At the same time, the 600 MW high-pressure pump 5 continues to pressurize to the process pressure, realizing synchronous control of thermal isostatic pressure.

[0034] Once the temperature and pressure in the high-pressure chamber 1 reach the set values ​​and the pressure holding is completed, the system enters the pressure relief stage. At this time, the ultra-high pressure throttle valve 18 and the small-hole pressure relief valve 19 start working. The small-hole pressure relief valve 19 opens first, allowing the high-temperature and high-pressure oil to be connected to the circuit of the mold temperature controller body 2 through a branch circuit, achieving a slow and stable pressure reduction. When the pressure drops to the preset value, the third pressure relief valve 20 opens, and the high-temperature oil is discharged into the pressure relief oil tank 7. The oil in the pressure relief oil tank 7 enters the heat exchanger 10 through the oil outlet, where the chiller 4 provides cooling water to connect with the heat exchanger 10. The cooling water circulation system forces the high-temperature oil to cool. The cooled heat transfer oil enters the low-temperature oil tank 6 from the heat medium outlet of the heat exchanger 10. When the liquid level in the low-temperature oil tank 6 reaches the high level, the outlet of the diaphragm pump 8 is connected in series with the oil pump 9 and the throttle valve body 11 to send the oil back to the mold temperature controller expansion tank 12. Finally, the mold temperature controller expansion tank 12 is connected to the mold temperature controller body 2 to realize the closed-loop circulation of the heat transfer oil. Through the above synergistic effect, this utility model effectively solves the problems of large pressure relief impact and low high-temperature heat transfer oil recovery efficiency in the prior art.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A thermostatic pressure equipment system, comprising a high-pressure chamber (1), a mold temperature controller body (2) and a 600 MW high-pressure pump (5), wherein the mold temperature controller body (2) is connected to the high-pressure chamber (1) and the 600 MW high-pressure pump (5) is connected to the high-pressure chamber (1). Its features are, It also includes an ultra-high pressure throttle valve (18), a small orifice pressure relief valve (19), a third pressure relief valve (20), a pressure relief oil tank (7), a heat exchanger (10), a chiller (4), a low temperature oil tank (6), a diaphragm pump (8), and a mold temperature controller expansion oil tank (12). The ultra-high pressure throttle valve (18) is connected in series to the pressure relief main pipe of the high pressure chamber (1). The small hole pressure relief valve (19) and the third pressure relief valve (20) are connected in parallel downstream of the ultra-high pressure throttle valve (18). The outlet of the third pressure relief valve (20) is connected to the pressure relief oil tank (7). The oil outlet of the pressure relief oil tank (7) is connected to the hot medium inlet of the heat exchanger (10). The chiller (4) and the heat exchanger (10) form a cooling water circulation. The hot medium outlet of the heat exchanger (10) is connected to the low temperature oil tank (6). The outlet of the low temperature oil tank (6) is connected to the inlet of the diaphragm pump (8). The outlet of the diaphragm pump (8) is connected to the mold temperature controller expansion oil tank (12). The mold temperature controller expansion oil tank (12) is connected to the mold temperature controller body (2).

2. The isostatic pressing system according to claim 1, characterized in that, The outlet branch of the small-hole pressure relief valve (19) is connected to the circuit of the mold temperature controller body (2).

3. The isostatic pressing system according to claim 1, characterized in that, The system also includes a closed oil tank (3), an ultra-high pressure coil (13) and a ball valve (21). The mold temperature controller body (2) and the closed oil tank (3) form a heating circuit. The outlet of the heating circuit is connected to the high pressure chamber (1) after being connected in series with the ultra-high pressure coil (13) and the ball valve (21).

4. The isostatic pressing system according to claim 1, characterized in that, A check valve (14) and a one-way valve (15) are connected in series on the pressurization pipeline between the 600 MW high-pressure pump (5) and the high-pressure chamber (1).

5. The isostatic pressing equipment system according to claim 1, characterized in that, The diaphragm pump (8) and the expansion tank (12) of the mold temperature controller are connected in series with an oil pump (9) and a throttle valve body (11).

6. The isostatic pressing system according to claim 1, characterized in that, The high-pressure chamber (1) has a circulation channel between the outer wall and the inner cavity, and the mold temperature controller body (2) is connected to the inlet of the circulation channel through a heating pipe.

7. The isostatic pressing system according to claim 1, characterized in that, The system also includes a first pressure relief valve (16) and a second pressure relief valve (17), which are disposed on the heating pipeline between the mold temperature controller body (2) and the high pressure chamber (1).

8. The isostatic pressing equipment system according to claim 7, characterized in that, The first pressure relief valve (16) and the second pressure relief valve (17) are connected in parallel on the bypass pipeline for low-pressure circulating heating, and the bypass pipeline is connected between the oil inlet and the oil outlet of the heating pipeline of the high-pressure chamber (1).

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