Temperature control device of steam combined cycle unit
By designing a protective mechanism and induction mechanism on the heat exchanger of the steam combined cycle unit, automatic protection and early warning are achieved when leakage occurs, and the dangerous problems of heat exchanger leakage to staff in the prior art are solved.
Patent Information
- Application Number
- CN202421463356.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-25
AI Technical Summary
When the heat exchanger of existing steam combined cycle units leaks, high temperature and high pressure gas or liquid may be sprayed to the outside, causing staff injury and lacking effective early warning and automatic protection mechanisms.
A steam combined cycle unit temperature control device including a heat exchanger body, a side fixing screw, a protective mechanism and an induction mechanism is designed. When the heat exchanger leaks, the protection mechanism automatically triggers, forming a preliminary protection barrier. At the same time, the induction mechanism feedbacks the leakage situation to the control terminal, issues an alarm and realizes automatic protection.
It effectively protects the outside staff from high temperature and high pressure splashing, and provides early warning of leakage and initial automatic protection, avoiding the danger of sudden leakage to personnel.
Smart Images
Figure CN222895119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of unit temperature control, in particular to a temperature control device for a steam combined cycle unit. Background Art
[0002] The temperature control device of the steam combined cycle unit is a complex and sophisticated system, which requires the comprehensive use of temperature sensors, controller design, actuators, cooling systems, heat exchangers, fault diagnosis systems, safety protection devices and human-machine interaction interfaces to achieve effective control of the unit temperature. These components work together to ensure the stable operation and safety performance of the steam combined cycle unit. The heat exchanger is the key equipment for heat transfer. It transfers high-temperature heat to low-temperature medium through the heat exchange process, thereby achieving control of the unit temperature. During the use of the existing heat exchanger, the staff needs to regularly check whether the heat exchanger has leakage problems. When the heat exchanger leaks, the leaked high-temperature and high-pressure gas or the high-temperature liquid in the exchanger under high-temperature and high-pressure environment will be sprayed to the outside of the exchanger. The suddenness of the leakage will cause harm to the staff outside the device.
[0003] The implementation of the utility model aims to provide a temperature control device for a steam combined cycle unit to solve the problems raised in the above background technology. Utility Model Content
[0004] The utility model aims to solve the shortcomings of the prior art mentioned in the background technology and proposes a temperature control device for a steam combined cycle unit.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A temperature control device for a steam combined cycle unit comprises a heat exchanger body, a side fixing screw, a protective mechanism and a sensing mechanism, wherein the outer side of the heat exchanger body is provided with a side fixing screw, and the lower end of the side fixing screw is provided with a protective mechanism, one side of the protective mechanism is provided with a sensing mechanism, the upper end of the protective mechanism is provided with a protective mechanism mounting buckle, and one side of the protective mechanism mounting buckle is provided with a protective mechanism screw, the upper and lower ends of the sensing mechanism are provided with sensing mechanism buckles, and the outer side of the sensing mechanism buckle is provided with a sensing mechanism screw.
[0007] Preferably, a slide groove is provided on the inner side of the protective mechanism, and a storage shaft is provided inside the protective mechanism, a protective plate is provided on the outer side of the storage shaft, and a counterweight block is provided at the bottom of the protective plate, and connecting rods are provided on both sides of the counterweight block.
[0008] Preferably, one end of the connecting rod is connected to the counterweight block, and the other end is fixedly mounted on the inner surface of the protective mechanism, and slide grooves are provided on both left and right sides of the inner side of the protective mechanism, and both ends of the protective plate are inserted into the inner side of the slide grooves.
[0009] Preferably, a pressure sensor is provided on the back of the sensing mechanism, and sensor fixing rods are provided at both upper and lower ends of the pressure sensor.
[0010] Preferably, six side fixing screws are equidistantly arranged on the left and right sides of the heat exchanger body, and protective mechanisms are arranged at the bottoms of the upper five side fixing screws on the left and right sides.
[0011] Preferably, three sensing mechanisms are respectively provided on the left and right sides of the heat exchanger body, and the three sensing mechanisms are respectively installed at the center of the side fixing screw through the sensing mechanism buckles at the upper and lower ends.
[0012] Preferably, the counterweight block is fixed to the inner side of the protective mechanism through connecting rods on both sides, and the entire material of the connecting rods is POM material.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. In the utility model, by setting a protective mechanism and a sensing mechanism, when the heat exchanger leaks, the high-temperature and high-pressure gas ejected from the heat exchanger and the liquid ejected under the internal high-temperature and high-pressure environment will be ejected from both sides of the exchanger. The protective mechanism on the side of the device can be automatically triggered when the heat exchanger leaks. The protective mechanism can protect the staff outside the device from being hurt in the first time. At the same time, the sensing mechanism can feed back the leakage situation to the control terminal in the first time, so that the device can play the role of early warning, issuing warnings and automatic protection in the early stage of leakage, avoiding sudden leakage from causing excessive danger to the staff outside.
[0015] 2. By setting the protective mechanism installation buckle and the sensing mechanism buckle, the protective mechanism and the sensing mechanism of the device are installed on the outside of the side fixing screw, so that the staff can flexibly adjust the quantity ratio and installation position of the protective mechanism and the sensing mechanism on the outside of the side fixing screw through the protective mechanism installation buckle and the sensing mechanism buckle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of a temperature control device for a steam combined cycle unit proposed by the utility model;
[0017] Figure 2 It is a schematic diagram of the protection mechanism structure;
[0018] Figure 3 This is a schematic diagram of the front structure of the protection mechanism;
[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the protection mechanism;
[0020] Figure 5 It is a schematic diagram of the induction mechanism structure.
[0021] In the figure: 1. Heat exchanger body; 2. Side fixing screw; 3. Protection mechanism; 4. Sensing mechanism; 5. Protection mechanism mounting buckle; 6. Protection mechanism screw; 7. Sensing mechanism buckle; 8. Sensing mechanism screw; 9. Slide; 10. Counterweight; 11. Connecting rod; 12. Protection plate; 13. Storage shaft; 14. Pressure sensor; 15. Sensor fixing rod. DETAILED DESCRIPTION
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.
[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0026] Example
[0027] Reference Figure 1-5A temperature control device for a steam combined cycle unit comprises a heat exchanger body 1, a side fixing screw 2, a protection mechanism 3 and a sensing mechanism 4. The side fixing screw 2 is arranged on the outside of the heat exchanger body 1, and the lower end of the side fixing screw 2 is provided with a protection mechanism 3, one side of the protection mechanism 3 is provided with a sensing mechanism 4, the upper end of the protection mechanism 3 is provided with a protection mechanism mounting buckle 5, and one side of the protection mechanism mounting buckle 5 is provided with a protection mechanism screw 6, the upper and lower ends of the sensing mechanism 4 are provided with a sensing mechanism buckle 7, and the outer side of the sensing mechanism buckle 7 is provided with a sensing mechanism screw 8, and the inner side of the protection mechanism 3 is provided with a sensing mechanism screw 8. A slide groove 9 is provided, and a storage shaft 13 is provided inside the protective mechanism 3, a protective plate 12 is provided on the outside of the storage shaft 13, and a counterweight 10 is provided at the bottom of the protective plate 12. Connecting rods 11 are provided on the left and right sides of the counterweight 10, one end of the connecting rod 11 is connected to the counterweight 10, and the other end is fixedly installed on the inner surface of the protective mechanism 3. Slide grooves 9 are provided on the left and right sides of the inner side of the protective mechanism 3, and the two ends of the protective plate 12 are inserted into the inner side of the slide groove 9. The counterweight 10 is fixed to the inner side of the protective mechanism 3 through the connecting rods 11 on both sides, and the overall material of the connecting rod 11 is POM material. A pressure sensor 14 is provided on the back of the sensing mechanism 4, and sensor fixing rods 15 are provided at the upper and lower ends of the pressure sensor 14. The pressure sensor 14 is fixedly installed on the back of the sensing mechanism 4 through the sensor fixing rod 15, and the model of the pressure sensor 14 is PX3 series, when the heat exchange plate inside the heat exchanger body leaks, high-temperature and high-pressure gas and liquid will be sprayed on the surface of the exchange mechanism 3, causing the connecting rod 11 on the inner side of the protective mechanism 3 to be broken by the impact. After the connecting rod 11 breaks, the counterweight block 10 is fixed to the inner side of the protective mechanism 3 by the connecting rods 11 on both sides, causing the counterweight block 10 to lose its supporting force, and then the counterweight block 10 falls downward. The downward force of the counterweight block 10 drives the protective plate 12 on the upper end of the counterweight block 10 to slide down the slide groove 9 and open, so that the protective plate 12 opens to form a preliminary protective barrier, which plays an initial anti-leakage protection role. At the same time, when the heat exchanger body 1 leaks, the high-temperature and high-pressure gas and liquid will trigger the pressure sensor 14, so that the pressure sensor 14 can feed back information to the control terminal, and the control terminal can simultaneously issue an alarm to remind the staff of the leakage area.
[0028] Six side fixing screws 2 are equidistantly arranged on the left and right sides of the heat exchanger body 1, and the bottoms of the upper five side fixing screws 2 on the left and right sides are provided with protective mechanisms 3. Three sensing mechanisms 4 are respectively arranged on the left and right sides of the heat exchanger body 1, and the three sensing mechanisms 4 are respectively installed at the center of the side fixing screws 2 through the sensing mechanism buckles 7 at the upper and lower ends. The protective mechanisms 3 and the sensing mechanisms 4 are installed on the outside of the side fixing screws 2 through the protective mechanism mounting buckles 5 and the sensing mechanism buckles 7. When the number ratio of the protective mechanisms 3 and the sensing mechanisms 4 needs to be replaced, the staff can remove the protective mechanism screws 6 and the sensing mechanism screws. 8 Remove the protective mechanism installation buckle 5 and the sensing mechanism buckle 7 from the surface of the side fixing screw 2 to disassemble the protective mechanism 3 and the sensing mechanism 4. Then install the protective mechanism 3 and the sensing mechanism 4 according to the new quantity ratio. When it is necessary to adjust the position of the protective mechanism 3 and the sensing mechanism 4, the staff can loosen the protective mechanism screw 6 and the sensing mechanism screw 8 to loosen the connection between the protective mechanism installation buckle 5 and the sensing mechanism buckle 7 and the side fixing screw 2, so that the protective mechanism installation buckle 5 and the sensing mechanism buckle 7 slide on the surface of the side fixing screw 2, thereby adjusting the position of the protective mechanism 3 and the sensing mechanism 4.
[0029] Working principle: When using this device, the protective mechanism 3 and the sensing mechanism 4 are installed on the surface of the side fixing screw 2 through the protective mechanism installation buckle 5 and the sensing mechanism buckle 7. When it is necessary to adjust the position of the protective mechanism 3 and the sensing mechanism 4, the staff can loosen the protective mechanism screw 6 and the sensing mechanism screw 8 to loosen the connection between the protective mechanism installation buckle 5 and the sensing mechanism buckle 7 and the side fixing screw 2, so that the protective mechanism installation buckle 5 and the sensing mechanism buckle 7 slide on the surface of the side fixing screw 2, thereby playing a role in adjusting the position of the protective mechanism 3 and the sensing mechanism 4. When the heat exchange plate inside the heat exchanger body leaks, high-temperature and high-pressure gas and liquid will be sprayed on the exchange mechanism 3. The surface of the protective mechanism 3 is impacted and broken by the connecting rod 11 inside. After the connecting rod 11 is broken, the counterweight 10 is fixed to the inner side of the protective mechanism 3 by the connecting rods 11 on both sides, so that the counterweight 10 loses its supporting force. Then the counterweight 10 falls downward, and the downward force of the counterweight 10 drives the protective plate 12 on the upper end of the counterweight 10 to slide down the slide groove 9 and open, so that the protective plate 12 opens to form a preliminary protective barrier, which plays an initial anti-leakage protection role. At the same time, when the heat exchanger body 1 leaks, the high-temperature and high-pressure gas and liquid will trigger the pressure sensor 14, so that the pressure sensor 14 can feed back information to the control terminal, and the control terminal can simultaneously issue an alarm to remind the staff of the leakage area.
[0030] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.
[0031] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
Claims
1. A temperature control device for a steam combined cycle unit, comprising a heat exchanger body (1), a side fixing screw (2), a protection mechanism (3) and a sensing mechanism (4), characterized in that: The heat exchanger body (1) is provided with a side fixing screw (2) on the outside, and a protective mechanism (3) is provided at the lower end of the side fixing screw (2), a sensing mechanism (4) is provided on one side of the protective mechanism (3), a protective mechanism mounting buckle (5) is provided on the upper end of the protective mechanism (3), and a protective mechanism screw (6) is provided on one side of the protective mechanism mounting buckle (5), and a sensing mechanism buckle (7) is provided at both upper and lower ends of the sensing mechanism (4), and a sensing mechanism screw (8) is provided on the outside of the sensing mechanism buckle (7).
2. A temperature control device for a steam combined cycle unit according to claim 1, characterized in that: A slide groove (9) is provided on the inner side of the protection mechanism (3), and a storage shaft (13) is provided inside the protection mechanism (3); a protection plate (12) is provided on the outer side of the storage shaft (13), and a counterweight (10) is provided at the bottom of the protection plate (12); and connecting rods (11) are provided on both left and right sides of the counterweight (10).
3. A temperature control device for a steam combined cycle unit according to claim 2, characterized in that: One end of the connecting rod (11) is connected to the counterweight (10), and the other end is fixedly mounted on the inner surface of the protection mechanism (3). Slide grooves (9) are provided on both left and right sides of the inner side of the protection mechanism (3), and both ends of the protection plate (12) are inserted into the inner side of the slide grooves (9).
4. A temperature control device for a steam combined cycle unit according to claim 1, characterized in that: A pressure sensor (14) is provided on the back of the sensing mechanism (4), and sensor fixing rods (15) are provided at both the upper and lower ends of the pressure sensor (14).
5. The temperature control device for a steam combined cycle unit according to claim 1, characterized in that: Six side fixing screws (2) are equidistantly arranged on the left and right sides of the heat exchanger body (1), and protective mechanisms (3) are arranged at the bottoms of the upper five side fixing screws (2) on the left and right sides.
6. A temperature control device for a steam combined cycle unit according to claim 2, characterized in that: The heat exchanger body (1) is provided with three sensing mechanisms (4) on the left and right sides respectively, and the three sensing mechanisms (4) are respectively installed at the center of the side fixing screw rod (2) through sensing mechanism buckles (7) at the upper and lower ends.
7. A temperature control device for a steam combined cycle unit according to claim 2, characterized in that: The counterweight block (10) is fixed to the inner side of the protection mechanism (3) via connecting rods (11) on both sides, and the entire material of the connecting rods (11) is POM material.