Waste heat storage heat accumulator
By adopting a one-way pressure relief valve structure between the inner shell and the outer shell in the waste heat storage heat storage device, balancing the internal pressure and discharging heat, the problems of pressure increase and heat loss in traditional heat storage devices under high load are solved, and the problem of pressure increase and heat loss in traditional heat storage devices is improved. The stability and insulation performance of the equipment are achieved.
Patent Information
- Application Number
- CN202421049627.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The existing waste heat storage transformer heat accumulator has a continuous increase in internal pressure under the long-term loading state of the system, causing the traditional heat accumulator to close the intake valve to avoid explosion, and when the heat is stopped, the heat is transmitted and lost through the shell, causing heat energy to be wasted.
Design a waste heat storage heat storage device, using a one-way pressure relief valve between the inner sleeve and the outer sleeve shell, high-temperature steam enters the gap between the outer sleeve shell through the one-way pressure relief valve, balances the pressure of the inner sleeve, and is discharged to the outer sleeve through the exhaust hole. External, reduce the risk of explosion and heat loss.
Effectively balance the internal pressure of the inner shell, ensure the continuous entry of high-temperature steam, improve insulation performance, reduce the risk of heat storage explosion, and reduce heat energy waste.
Smart Images
Figure CN222256472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat accumulators, in particular to a waste heat storage heat accumulator. Background Art
[0002] The waste heat storage accumulator includes a pressure-variable heat accumulator. The waste heat storage accumulator is a large-volume water container that can absorb excess steam from the boiler when the system load decreases and deliver steam when the system load increases. At present, the main one used is the pressure-variable heat accumulator. Using a heat accumulator or utilizing the heat storage capacity of the equipment is one of the methods for balancing short-term peak loads for heat supply regulation. Heat supply regulation is an important way to strive to reduce energy consumption and reduce investment on the premise of meeting the user's heat load requirements. The steam accumulator can assist in regulating the changing steam load, which can ensure the stability and economy of the steam heating system and equipment during peak times.
[0003] The existing technology has the following deficiencies: the existing waste heat storage transformer heat accumulator has a certain pressure limit. When the system is in a load state for a long time, the increased steam will be continuously input into the heat accumulator, causing the pressure in the heat accumulator to continue to rise. When the internal pressure of the heat accumulator approaches the limit value, the traditional heat accumulator will close the air inlet valve to avoid equipment damage or explosion; when the heat accumulator stops storing heat, the heat inside it will gradually generate a certain amount of heat loss through conduction of the outer shell. At the same time, the excess steam generated by the system load state cannot enter the heat accumulator, which will cause a large amount of heat energy waste. Utility Model Content
[0004] The purpose of the utility model is to solve the above-mentioned problem and provide the following technical solutions: a waste heat storage accumulator, comprising an inner shell and high-temperature steam, the inner shell being a capsule-shaped hollow structure, a steam inlet pipe being inserted and installed on one side of the outer wall of the inner shell, the high-temperature steam being able to enter the inner shell along the steam inlet pipe, a steam outlet pipe being inserted and installed on one end of the inner shell, an outer shell being sleeved on the outer wall of the inner shell, a gap being arranged between the inner shell and the outer shell, a one-way pressure relief valve being inserted and installed on the end of the inner wall of the inner shell away from the steam outlet pipe, the high-temperature steam in the inner shell being able to enter the outer shell through the one-way pressure relief valve.
[0005] Preferably, the one-way pressure relief valve comprises an exhaust pipe, which is fixedly mounted on an end of the inner wall of the inner shell away from the steam outlet pipe, and the exhaust pipe penetrates the inner wall of the inner shell and connects the gap between the outer shell and the inner shell.
[0006] Preferably, the one-way pressure relief valve includes a second sleeve, which is fixedly mounted on the inner wall of the exhaust pipe, and one end of the second sleeve away from the inner wall of the inner shell is fixedly connected to the first sleeve, and one end of the first sleeve away from the second sleeve extends out of the exhaust pipe to the inner wall of the inner shell.
[0007] Preferably, the one-way pressure relief valve comprises a valve core, the inner diameter of the first sleeve is smaller than the inner diameter of the second sleeve, the valve core is slidably mounted on the inner wall of the second sleeve, and one end of the valve core close to the first sleeve extends into the inner wall of the first sleeve.
[0008] Preferably, one end of the valve core extending into the first sleeve is provided with a slot, the bottom of the valve core slot is provided with a conical structure groove, and air holes are provided around the side of the inner wall of the valve core slot.
[0009] Preferably, the one-way pressure relief valve includes a positioning ring, which is fixedly mounted on the inner wall of the second sleeve at one end away from the first sleeve, and a spring is fixedly mounted on one end of the positioning ring close to the first sleeve, and the end of the spring away from the positioning ring presses against the end of the valve core away from the first sleeve.
[0010] Preferably, the one-way pressure relief valve comprises a steam collecting hood, which is fixedly mounted on an end of the first sleeve away from the second sleeve, and a sealing ring is fixedly mounted on an end of the inner wall of the second sleeve close to the first sleeve.
[0011] Preferably, a plurality of exhaust holes are evenly arranged at one end of the outer shell away from the exhaust pipe, and the high-temperature steam between the outer shell and the inner shell can be discharged to the outside through the exhaust holes. A support is fixedly installed on the bottom surface of the outer shell.
[0012] Preferably, one end of the steam inlet pipe away from the inner shell passes through the outer shell and extends to the outside of the outer shell, and one end of the steam inlet pipe extending to the outside of the outer shell is fixedly installed with a steam inlet valve, and one end of the steam outlet pipe away from the inner shell passes through the outer shell and extends to the outside of the outer shell, and one end of the steam outlet pipe extending to the outside of the outer shell is fixedly installed with a steam outlet valve.
[0013] The beneficial effect of the utility model is that when the internal pressure of the inner shell approaches the limit value, part of the high-pressure steam in the inner shell will enter the gap between the outer shell and the inner shell through the one-way pressure relief valve to achieve the balance of the internal pressure of the inner shell, so that new high-temperature steam can continuously enter the inner shell, and the thermal insulation performance of the inner shell is improved, while reducing the risk of explosion of the heat accumulator. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A front view of a waste heat storage accumulator provided by the utility model;
[0015] Figure 2 A cross-sectional view of a waste heat storage accumulator provided by the utility model;
[0016] Figure 3 A top cross-sectional view of a waste heat storage accumulator provided by the utility model;
[0017] Figure 4A cross-sectional view of a one-way pressure relief valve of a waste heat storage accumulator provided by the utility model;
[0018] Figure 5 A schematic diagram of the internal structure of a one-way pressure relief valve of a waste heat storage accumulator provided by the utility model;
[0019] Figure 6 A detailed view of the exhaust hole of a waste heat storage accumulator provided by the utility model.
[0020] In the figure: outer shell 11, inner shell 12, steam inlet pipe 13, steam inlet valve 14, steam outlet pipe 15, steam outlet valve 16, exhaust hole 17, support 18, exhaust pipe 21, first sleeve 22, steam collecting cover 23, second sleeve 24, positioning ring 25, sealing ring 26, valve core 27, air hole 28, spring 29. DETAILED DESCRIPTION
[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example 1
[0022] like Figure 1-Figure 3 As shown, a waste heat storage accumulator in an embodiment of the first aspect of the utility model comprises an inner shell 12 and high-temperature steam, the inner shell 12 being a capsule-shaped hollow structure, a steam inlet pipe 13 being inserted and installed on one side of the outer wall of the inner shell 12, the high-temperature steam being able to enter the inner shell 12 along the steam inlet pipe 13, a steam outlet pipe 15 being inserted and installed on one end of the inner shell 12, an outer shell 11 being sleeved on the outer wall of the inner shell 12, a gap being arranged between the inner shell 12 and the outer shell 11, a one-way pressure relief valve being inserted and installed on the end of the inner wall of the inner shell 12 away from the steam outlet pipe 15, the high-temperature steam in the inner shell 12 being able to enter the outer shell 11 through the one-way pressure relief valve.
[0023] In the above embodiment, it should be noted that when the system load is reduced, excess steam is absorbed from the boiler through the steam inlet pipe 13 and transported into the inner shell 12. When the system load increases, the steam in the inner shell 12 is sent out through the steam outlet pipe 15 to achieve the effect of balancing the short-term peak load for heat regulation. When the long-term system load causes the internal pressure of the inner shell 12 to approach the limit value, part of the high-pressure steam in the inner shell 12 will enter the gap between the inner shell 12 and the outer shell 11 through the one-way pressure relief valve to achieve the effect of balancing the pressure in the inner shell 12, so that new high-temperature steam can continuously enter the inner shell 12, and improve the thermal insulation performance of the inner shell 12, while reducing the risk of explosion of the heat accumulator. Example 2
[0024] like Figure 2-Figure 5As shown, a waste heat storage accumulator includes all the contents of Example 1. In addition, the one-way pressure relief valve includes an exhaust pipe 21, which is fixedly installed on the inner wall of the inner shell 12 at one end away from the steam outlet pipe 15. The exhaust pipe 21 penetrates the inner wall of the inner shell 12 and connects the gap between the outer shell 11 and the inner shell 12. The one-way pressure relief valve includes a second sleeve 24, which is fixedly installed on the inner wall of the exhaust pipe 21. The end of the second sleeve 24 away from the inner wall of the inner shell 12 is fixedly connected to the first sleeve 22. The end of the first sleeve 22 away from the second sleeve 24 extends from the exhaust pipe 21 to the inner wall of the inner shell 12. The one-way pressure relief valve includes a valve core 27. The inner diameter of the first sleeve 22 is smaller than the inner diameter of the second sleeve 24. The valve core 27 is slidably installed on the inner wall of the second sleeve 24. 7 The end close to the first sleeve 22 extends into the inner wall of the first sleeve 22, and the end of the valve core 27 extending into the first sleeve 22 is provided with a groove, and the bottom of the groove of the valve core 27 is set as a conical structure groove, and the side of the inner wall of the groove of the valve core 27 is provided with air holes 28 around the side, and the one-way pressure relief valve includes a positioning ring 25, and the positioning ring 25 is fixedly installed on the inner wall of the second sleeve 24 at one end away from the first sleeve 22, and the positioning ring 25 is fixedly installed on the end close to the first sleeve 22. A spring 29 is fixedly installed, and the end of the spring 29 away from the positioning ring 25 presses against the end of the valve core 27 away from the first sleeve 22, and the one-way pressure relief valve includes a steam collecting hood 23, and the steam collecting hood 23 is fixedly installed on the end of the first sleeve 22 away from the second sleeve 24, and a sealing ring 26 is fixedly installed on the inner wall of the second sleeve 24 close to the first sleeve 22.
[0025] In the above embodiment, it should be noted that the spring 29 always pushes the valve core 27 to squeeze the sealing ring 26 to play a sealing role. When the internal pressure of the inner shell 12 rises to the limit value, the high-pressure steam in the inner shell 12 enters the valve core 27 through the steam collecting cover 23 and pushes the valve core 27 to squeeze the spring 29. The spring 29 is forced to shrink. At the same time, the part of the valve core 27 extending into the first sleeve 22 slides into the inner wall of the second sleeve 24. Then the high-pressure steam in the valve core 27 enters the second sleeve 24 through the air hole 28. The high-pressure steam in the second sleeve 24 enters the gap between the inner shell 12 and the outer shell 11 through the exhaust pipe 21, so as to achieve the effect of balancing the pressure of the inner shell 12 and improving the thermal insulation performance of the inner shell 12. Example 3
[0026] like Figure 1 and Figure 6 As shown, a waste heat storage accumulator includes all the contents of Example 2. In addition, a plurality of exhaust holes 17 are evenly arranged at one end of the outer shell 11 away from the exhaust pipe 21. The high-temperature steam between the outer shell 11 and the inner shell 12 can be discharged to the outside from the exhaust holes 17. A support 18 is fixedly installed on the bottom surface of the outer shell 11.
[0027] In the above embodiment, it should be noted that the support 18 has the function of fixing the outer shell 11 and the inner shell 12, and the high-temperature steam in the gap between the inner shell 12 and the outer shell 11 can be discharged to the outside through the exhaust hole 17. A drainage hole is provided at the bottom of the outer shell 11 for discharging condensed water generated in the gap between the inner shell 12 and the outer shell 11. Example 4
[0028] like Figure 1-Figure 3 As shown, a waste heat storage accumulator includes all the contents of Example 1. In addition, one end of the steam inlet pipe 13 away from the inner shell 12 penetrates the outer shell 11 and extends to the outside of the outer shell 11, and the end of the steam inlet pipe 13 extending to the outside of the outer shell 11 is fixedly installed with a steam inlet valve 14, and one end of the steam outlet pipe 15 away from the inner shell 12 penetrates the outer shell 11 and extends to the outside of the outer shell 11, and the end of the steam outlet pipe 15 extending to the outside of the outer shell 11 is fixedly installed with a steam outlet valve 16.
[0029] In the above embodiment, it should be noted that the steam inlet valve 14 and the steam outlet valve 16 are driven by a motor, and the steam inlet valve 14 has the function of controlling the opening or closing of the steam inlet pipe 13. When the system load decreases, the steam inlet valve 14 automatically opens, and the steam outlet valve 16 has the function of controlling the opening or closing of the steam outlet pipe 15. When the system load increases, the steam outlet valve 16 automatically opens.
[0030] The use process of the utility model is as follows: when the system load is reduced, the steam inlet valve 14 is automatically opened, the steam inlet pipe 13 absorbs excess steam from the boiler and transports it into the inner shell 12; when the system load increases, the steam outlet valve 16 is automatically opened, and the steam outlet pipe 15 sends out the steam in the inner shell 12 to balance the short-term peak load for heating regulation; when the system load is reduced for a long time, the steam continues to enter the inner shell 12 and its internal pressure approaches the limit value, and the high-pressure steam in the inner shell 12 enters the valve core 27 through the steam collecting cover 23 and pushes the valve core 27 to squeeze the spring 29, the spring 29 is forced to shrink, and at the same time, the part of the valve core 27 extending into the first sleeve 22 slides into the inner wall of the second sleeve 24, and then the high-pressure steam in the valve core 27 enters the second sleeve 24 through the air hole 28, and the high-pressure steam in the second sleeve 24 enters the gap between the inner shell 12 and the outer shell 11 through the exhaust pipe 21, and then the high-temperature steam in the gap between the inner shell 12 and the outer shell 11 can be discharged to the outside through the exhaust hole 17 to balance the pressure of the inner shell 12, thereby improving the thermal insulation performance of the inner shell 12 and reducing the risk of explosion of the heat accumulator.
[0031] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.
Claims
1. A waste heat storage accumulator, comprising an inner shell (12) and high-temperature steam, wherein the inner shell (12) is a capsule-shaped hollow structure, a steam inlet pipe (13) is inserted and installed on one side of the outer wall of the inner shell (12), and the high-temperature steam can enter the inner shell (12) along the steam inlet pipe (13), and a steam outlet pipe (15) is inserted and installed on one end of the inner shell (12), characterized in that: The outer shell (11) is sleeved on the outer wall of the inner shell (12), a gap is provided between the inner shell (12) and the outer shell (11), a one-way pressure relief valve is inserted and installed on the end of the inner wall of the inner shell (12) away from the steam outlet pipe (15), and the high-temperature steam in the inner shell (12) can enter the outer shell (11) through the one-way pressure relief valve.
2. A waste heat storage accumulator according to claim 1, characterized in that: The one-way pressure relief valve comprises a steam exhaust pipe (21), wherein the steam exhaust pipe (21) is fixedly mounted on an end of the inner wall of the inner casing (12) away from the steam outlet pipe (15), and the steam exhaust pipe (21) penetrates the inner wall of the inner casing (12) and is connected to the gap between the outer casing (11) and the inner casing (12).
3. A waste heat storage accumulator according to claim 2, characterized in that: The one-way pressure relief valve comprises a second sleeve (24), the second sleeve (24) being fixedly mounted on the inner wall of the exhaust pipe (21), one end of the second sleeve (24) away from the inner wall of the inner casing (12) being fixedly connected to the first sleeve (22), and one end of the first sleeve (22) away from the second sleeve (24) extending out of the exhaust pipe (21) to the inner wall of the inner casing (12).
4. A waste heat storage accumulator according to claim 3, characterized in that: The one-way pressure relief valve comprises a valve core (27); the inner diameter of the first sleeve (22) is smaller than the inner diameter of the second sleeve (24); the valve core (27) is slidably mounted on the inner wall of the second sleeve (24); and one end of the valve core (27) close to the first sleeve (22) extends into the inner wall of the first sleeve (22).
5. A waste heat storage accumulator according to claim 4, characterized in that: One end of the valve core (27) extending into the first sleeve (22) is provided with a slot, the bottom of the slot of the valve core (27) is provided with a conical structure groove, and air holes (28) are provided around the inner wall side of the slot of the valve core (27).
6. A waste heat storage accumulator according to claim 5, characterized in that: The one-way pressure relief valve comprises a positioning ring (25), wherein the positioning ring (25) is fixedly mounted on an end of the inner wall of the second sleeve (24) away from the first sleeve (22), and a spring (29) is fixedly mounted on an end of the positioning ring (25) close to the first sleeve (22), and an end of the spring (29) away from the positioning ring (25) presses against an end of the valve core (27) away from the first sleeve (22).
7. A waste heat storage accumulator according to claim 6, characterized in that: The one-way pressure relief valve comprises a steam collecting hood (23), wherein the steam collecting hood (23) is fixedly mounted on an end of the first sleeve (22) away from the second sleeve (24), and a sealing ring (26) is fixedly mounted on an end of the inner wall of the second sleeve (24) close to the first sleeve (22).
8. A waste heat storage accumulator according to claim 7, characterized in that: A plurality of exhaust holes (17) are evenly arranged at one end of the outer shell (11) away from the exhaust pipe (21), and high-temperature steam between the outer shell (11) and the inner shell (12) can be discharged to the outside through the exhaust holes (17). A support (18) is fixedly mounted on the bottom surface of the outer shell (11).
9. The waste heat storage accumulator according to claim 1, characterized in that: One end of the steam inlet pipe (13) away from the inner casing (12) penetrates the outer casing (11) and extends to the outside of the outer casing (11); one end of the steam inlet pipe (13) extending to the outside of the outer casing (11) is fixedly mounted with a steam inlet valve (14); one end of the steam outlet pipe (15) away from the inner casing (12) penetrates the outer casing (11) and extends to the outside of the outer casing (11); one end of the steam outlet pipe (15) extending to the outside of the outer casing (11) is fixedly mounted with a steam outlet valve (16).