Nuclear-grade temperature switch with high sensitivity

Abstract

The invention relates to the technical field of temperature switches, in particular to a high-sensitivity nuclear-grade temperature switch which comprises a base, the base comprises a bottom plate, a center cylinder is fixedly installed at the upper end of the bottom plate, a cover plate is installed at the upper end of the center cylinder, a temperature control assembly is installed on the base, and the temperature switch further comprises the temperature control assembly and an anti-interference assembly. By designing the anti-interference assembly, the yield force of the non-Newtonian liquid is ingeniously used as the first buffering effect, and by means of small-flow conveying of the conveying pipe, the first bag body can provide the second buffering effect and cannot interfere with the high-temperature cutting-off function; meanwhile, continuously enhanced buffering force of the first reset spring and the second reset spring is used as a third buffering effect, the multiple buffering effects not only improve the stability of contact connection of the movable contact piece and the static contact piece and effectively avoid the occurrence of poor contact accidents, but also enhance the anti-interference capability of the temperature switch to the environment, and the service life of the temperature switch is prolonged. And the sensitivity of the temperature switch to the temperature is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature switches, and in particular to a nuclear-grade temperature switch with high sensitivity. Background Art

[0002] Temperature switches are divided into snap type and flash type. Flash type temperature switches with adjustable operating temperature function are more common. The bimetallic strip is set at the bottom of the flash type temperature switch. The hot and cold deformation of the bimetallic strip does not act on the contacts immediately. Instead, the energy is slowly accumulated on the reed to the turning point, and the contacts quickly engage or disengage to achieve connection or disconnection.

[0003] During the operation, transportation and installation of equipment, vibration forces such as mechanical vibration, bumpy vibration and installation environment vibration may cause poor contact of the internal contacts of the temperature control switch, thereby affecting the performance and reliability of the temperature control switch. Safety is particularly important for some nuclear equipment. The temperature switches used in nuclear equipment need to have high stability and cannot be easily affected by the environment. In addition, due to the diversity of the installation environment of the temperature switch, some scenarios require wiring on the left side, and some scenarios require wiring on the right side. This requires the electrode sheet to be able to flexibly adjust the angle to adapt to different installation environments.

[0004] Therefore, a nuclear-grade temperature switch with high sensitivity is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a nuclear-grade temperature switch with high sensitivity to solve the problems of poor contact of temperature switch contacts and diversity of wiring environments raised in the above-mentioned background art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a highly sensitive nuclear-grade temperature switch, comprising a base, the base comprising a bottom plate, a center tube fixedly mounted on the upper end of the bottom plate, a cover plate mounted on the upper end of the center tube, a temperature control assembly mounted on the base, the temperature switch further comprising an anti-interference assembly and a limit assembly, the anti-interference assembly utilizing the characteristic of a non-Newtonian liquid whose viscosity increases sharply when subjected to rapid, instantaneous impact to generate a strong yield force to limit the separation of a moving contact piece and a static contact piece in a vibration environment, while utilizing its characteristic of being able to flow under a continuous and stable force so that the moving contact piece can still be separated from the static contact piece under a continuous force caused by high temperature, the limit assembly is used to position the first electrode piece and the second electrode piece after the angle is adjusted, and can retract the handle.

[0007] Preferably, the temperature control component includes a bimetallic strip mounted on the central tube, the upper right end of the bimetallic strip is connected to a force frame and a moving contact piece, the lower right end of the force frame is clamped with the moving contact piece, the bottom left end of the moving contact piece is attached to the static contact piece, and a pin plate is provided at the upper end of the force frame.

[0008] Preferably, the left ends of the static contact piece, the insulating block, the force frame and the ejector plate are all sleeved on the central tube, and the bimetallic strip, the static contact piece, the force frame and the ejector plate are insulated and separated from each other by three groups of insulating blocks.

[0009] Preferably, the anti-interference component includes a guide block box arranged on both sides of the moving contact piece, the outer side of the guide block box is fixedly connected to a bracket, the bracket is installed on the insulating block, the inside of the guide block box is fixedly installed with a guide rod, the outer side of the guide rod is sleeved with a guide block, the guide block is fixedly installed on the moving contact piece, the upper end of the guide block is fixedly connected to one end of the first capsule, the other end of the first capsule is fixedly connected to the top of the guide block box, the bottom end of the guide block is fixedly connected to one end of the second capsule, the other end of the second capsule is fixedly connected to the bottom end of the guide block box, the inner side of the first capsule is connected to one end of the conveying pipe, the other end of the conveying pipe passes through the guide rod and is connected to the second capsule.

[0010] Preferably, the first capsule and the second capsule are both sleeved on the guide rod, and the fluids in the first capsule and the second capsule are both non-Newtonian liquids.

[0011] Preferably, the central axis of the circle to which the arc of the guide rod belongs is the same as the central axis of the circle to which the swing arc of the movable contact piece belongs, so as to avoid affecting the swing trajectory of the movable contact piece.

[0012] Preferably, a first return spring is provided inside the first capsule, and a second return spring is provided inside the second capsule.

[0013] Preferably, the limiting assembly includes a center plate fixedly mounted inside the center tube, the upper end of the center plate is fixedly connected to a first tension spring, the upper end of the first tension spring is fixedly connected to a lifting plate, a group of connecting rods are hinged on the outer sides of the center plate and the lifting plate, the outer ends of the two groups of connecting rods are hinged on the splint, a rubber pad is fixedly mounted on the outer side of the splint, and an arc strip is provided on the rubber pad.

[0014] Preferably, two groups of card slots are provided on the outer side of the central tube, and the two groups of card slots are respectively provided with the first electrode sheet and the second electrode sheet. The first electrode sheet is attached to the bottom end of the static contact sheet, and the second electrode sheet is attached to the upper end of the force frame. Arc grooves are provided on the inner sides of the first electrode sheet and the second electrode sheet for facilitating the insertion of the arc strips. A movable channel is provided on the outer side of the central tube for facilitating the passage of the rubber pad.

[0015] Preferably, a handle is placed on the upper end of the cover plate, the bottom end of the handle is fixedly connected to the first pull rod, the bottom end of the first pull rod is provided with a movable cavity, the top end of the movable cavity is fixedly connected to one end of a second tension spring, the other end of the second tension spring is fixedly connected to the limit plate, the restoring force of the second tension spring can be overcome by the restoring force of the first tension spring, the bottom end of the limit plate is fixedly connected to one end of the second pull rod, and the other end of the second pull rod is fixedly connected to the lifting plate.

[0016] Beneficial effects of the present invention: 1. The present invention cleverly utilizes the yield force of non-Newtonian liquid as the first buffering effect by designing an anti-interference component. With the help of low-flow delivery through the delivery pipe, the first capsule can provide a second buffering effect without interfering with the high-temperature cut-off function. At the same time, the continuously enhanced buffering force of the first return spring and the second return spring is utilized as a third buffering effect. The multiple buffering effects not only improve the stability of the contact connection between the moving contact piece and the static contact piece, effectively avoiding the occurrence of poor contact accidents, but also enhance the temperature switch's anti-interference ability to the environment, thereby improving the temperature switch's sensitivity to temperature.

[0017] 2. The present invention utilizes a limit assembly designed to retract the rubber pad by pulling the handle, thereby facilitating the removal of the restriction on the first and second electrode sheets, allowing them to be freely adjusted in direction. This allows the temperature switch to better adapt to various installation environments and improves the versatility of the temperature switch. The outward expansion of the rubber pad is controlled by the restoring force of the first tension spring, facilitating the re-fixation of the first and second electrode sheets after adjustment, thereby ensuring the stability of the connection between the two. The provision of the second tension spring also stabilizes the handle without interfering with the outward expansion and positioning effect of the first tension spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is an overall three-dimensional schematic diagram of the present invention; Figure 2 It is an overall front view of the present invention; Figure 3 is a three-dimensional schematic diagram of the anti-interference component of the present invention; Figure 4 It is a cross-sectional schematic diagram of the guide block box of the present invention; Figure 5 A partial three-dimensional diagram of the limiting component of the present invention Figure 1 ; Figure 6 For the present invention Figure 5 A in the middle is an enlarged schematic diagram; Figure 7 A partial three-dimensional diagram of the limiting component of the present invention Figure 2 ; Figure 8 It is a schematic cross-sectional view of the handle of the present invention.

[0020] The following are marked in the figure: 1, base; 11, bottom plate; 12, center tube; 13, cover plate; 14, slot; 15, movable channel; 2. Temperature control assembly; 21. Bimetallic strip; 22. Static contact; 23. Insulation block; 24. Force frame; 25. Moving contact; 26. Ejector plate; 27. First electrode; 28. Second electrode; 3. Anti-interference assembly; 31. Guide block box; 32. Bracket; 33. Guide rod; 34. Guide block; 35. First bladder; 36. Delivery tube; 37. Second bladder; 38. First return spring; 39. Second return spring; 4. Limiting assembly; 41. Center plate; 42. First tension spring; 43. Lifting plate; 44. Connecting rod; 45. Clamping plate; 46. Rubber pad; 461. Arc bar; 462. Arc groove; 47. Handle; 471. First pull rod; 472. Movable cavity; 48. Second tension spring; 49. Limiting plate; 491. Second pull rod. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] See also Figures 1 to 8The present invention provides a technical solution: a highly sensitive nuclear-grade temperature switch, comprising a base 1, the base 1 comprising a bottom plate 11, a central tube 12 being fixedly mounted on the upper end of the bottom plate 11, a cover plate 13 being mounted on the upper end of the central tube 12, a temperature control component 2 being mounted on the base 1, and the temperature switch further comprising an anti-interference component 3 and a limit component 4, the anti-interference component 3 utilizing the characteristic that the viscosity of non-Newtonian liquid increases sharply when subjected to rapid and instantaneous impact to generate a strong yield force to limit the separation of the moving contact piece 25 and the static contact piece 22 in a vibration environment, and at the same time utilizing its characteristic of being able to flow under continuous and stable force, so that the moving contact piece 25 can still be separated from the static contact piece 22 under the continuous force caused by high temperature, the limit component 4 is used to position the first electrode piece 27 and the second electrode piece 28 after the angle is adjusted, and can retract the handle 47.

[0024] Preferably, the temperature control component 2 includes a bimetallic strip 21 sleeved on the central tube 12, the upper right end of the bimetallic strip 21 is connected to a force frame 24 and a moving contact piece 25, the lower right end of the force frame 24 is clamped with the moving contact piece 25, the bottom left end of the moving contact piece 25 is attached to the static contact piece 22, and the upper end of the force frame 24 is provided with a pin plate 26.

[0025] Preferably, the left ends of the static contact piece 22, the insulating block 23, the force frame 24 and the ejector plate 26 are all sleeved on the central tube 12, and the bimetallic strip 21, the static contact piece 22, the force frame 24 and the ejector plate 26 are insulated and separated from each other by three groups of insulating blocks 23.

[0026] By adopting the above technical solution, when the high temperature is automatically cut off, because the bimetallic strip 21 is composed of two metals or alloys with different thermal expansion coefficients, under the same temperature change, the thermal expansion coefficient of the metal in the upper layer of the bimetallic strip 21 is much lower than that of the metal in the lower layer, so the bimetallic strip 21 is deformed and bent by heat, and then the bending of the bimetallic strip 21 causes the right end of the moving contact piece 25 at the bottom end of the force frame 24 to move, and finally causes the other end of the moving contact piece 25 to break away from the contact with the static contact piece 22. This is an existing conventional technical means and will not be described in detail.

[0027] As an embodiment of the present invention, Figure 1 、 Figure 3 and Figure 4As shown, the anti-interference component 3 includes a guide block box 31 arranged on both sides of the moving contact piece 25, the outer side of the guide block box 31 is fixedly connected to a bracket 32, the bracket 32 is installed on the insulating block 23, the inside of the guide block box 31 is fixedly installed with a guide rod 33, the outer side of the guide rod 33 is sleeved with a guide block 34, the guide block 34 is fixedly installed on the moving contact piece 25, the upper end of the guide block 34 is fixedly connected to one end of the first capsule 35, the other end of the first capsule 35 is fixedly connected to the top of the guide block box 31, the bottom end of the force frame 24 is fixedly connected to one end of the second capsule 37, the other end of the second capsule 37 is fixedly connected to the guide block At the bottom end of the box 31, the inner side of the first capsule 35 is connected to one end of the delivery pipe 36, and the other end of the delivery pipe 36 passes through the guide rod 33 and is connected to the second capsule 37. The first capsule 35 and the second capsule 37 are both sleeved on the guide rod 33. The fluids in the first capsule 35 and the second capsule 37 are both non-Newtonian liquids. The central axis of the circle to which the arc of the guide rod 33 belongs is the same as the central axis of the circle to which the swing arc of the moving contact piece 25 belongs, which is used to avoid affecting the swing trajectory of the moving contact piece 25. A first return spring 38 is provided inside the first capsule 35, and a second return spring 39 is provided inside the second capsule 37.

[0028] By adopting the above technical solution, during the operation, transportation and installation of the equipment, vibration forces such as mechanical vibration, bump vibration and installation environment vibration may cause poor contact of the internal contacts of the temperature control switch, thereby affecting the performance and reliability of the temperature control switch. When the temperature control switch is subjected to a large instantaneous vibration force from the outside world, since the first capsule 35 is filled with a non-Newtonian liquid, its viscosity will increase sharply when encountering a fast and instantaneous impact force, thereby generating a large instantaneous reaction force, effectively ensuring the contact effect between the moving contact piece 25 and the static contact piece 22, even if it is instantaneous. The impact force is strong enough to overcome the yield force of the non-Newtonian liquid, and the liquid in the first capsule 35 can only flow slowly into the second capsule 37 through the delivery pipe 36. In this way, the first capsule 35 can not only provide a buffering force to prevent the dynamic contact piece 25 and the static contact piece 22 from quickly separating, but also the first return spring 38 inside the first capsule 35 can also play a buffering role. In addition, the first return spring 38 in the first capsule 35 and the second return spring 39 inside the second capsule 37 work together to neutralize the swing force of the dynamic contact piece 25, making the swing of the dynamic contact piece 25 more gentle. When the temperature inside the switch rises and the bimetallic strip 21 gradually deforms, it will apply a continuous force to the right end of the moving contact piece 25 through the force frame 24. At this time, the non-Newtonian liquid in the first capsule 35 and the second capsule 37 has the characteristics that as the temperature rises, the viscosity decreases and the flow rate increases. Under the continuous force, its viscosity will gradually decrease over time and its fluidity will increase. Based on these characteristics, the liquid in the first capsule 35 can flow stably into the second capsule 37 through the delivery pipe 36, and finally the moving contact piece 25 is separated from the static contact piece 22, realizing the cut-off function under high temperature. It is beneficial to utilize the yield force of non-Newtonian liquid as the first buffering effect, and with the help of small flow delivery of the delivery pipe 36, the first capsule 35 can provide the second buffering effect without interfering with the high-temperature cut-off function. At the same time, the continuously enhanced buffering force of the first return spring 38 and the second return spring 39 is utilized as the third buffering effect. The multiple buffering effects not only improve the stability of the contact connection between the moving contact piece 25 and the static contact piece 22, effectively avoid the occurrence of poor contact accidents, but also enhance the temperature switch's anti-interference ability to the environment, thereby improving the temperature switch's sensitivity to temperature.

[0029] As an embodiment of the present invention, Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the limit assembly 4 includes a center plate 41 fixedly mounted inside the center tube 12, the upper end of the center plate 41 is fixedly connected to a first tension spring 42, the upper end of the first tension spring 42 is fixedly connected to a lifting plate 43, the outer sides of the center plate 41 and the lifting plate 43 are hinged with a group of connecting rods 44, the outer ends of the two groups of connecting rods 44 are hinged on the clamping plate 45, the outer side of the clamping plate 45 is fixedly mounted with a rubber pad 46, the rubber pad 46 is provided with an arc strip 461, the outer side of the center tube 12 is provided with two groups of card slots 14, the two groups of card slots 14 are respectively provided with a first electrode sheet 27 and a second electrode sheet 28, the first electrode sheet 27 is attached to the bottom end of the static contact sheet 22, the second electrode sheet 28 is attached to the upper end of the force frame 24, and the first electrode sheet Arc grooves 462 are provided on the inner sides of the electrode sheets 27 and the second electrode sheet 28 for facilitating the insertion of the arc strip 461. A movable channel 15 is provided on the outer side of the central tube 12 for facilitating the passage of the rubber pad 46. A handle 47 is placed on the upper end of the cover plate 13. The bottom end of the handle 47 is fixedly connected to the first pull rod 471. A movable cavity 472 is provided at the bottom end of the first pull rod 471. The top of the movable cavity 472 is fixedly connected to one end of the second tension spring 48. The other end of the second tension spring 48 is fixedly connected to the limit plate 49. The restoring force of the second tension spring 48 can be overcome by the restoring force of the first tension spring 42. The bottom end of the limit plate 49 is fixedly connected to one end of the second pull rod 491. The other end of the second pull rod 491 is fixedly connected to the lifting plate 43.

[0030] By adopting the above technical solution, since the installation environment of the temperature switch is diverse, some scenes need to be wired on the left, and some scenes need to be wired on the right, which requires the electrode sheet to be able to flexibly adjust the angle to adapt to different installation environments. In actual use, first pull the handle 47, and the handle 47 will drive the limit plate 49 in the active cavity 472 to slide through the first pull rod 471. When the limit plate 49 slides to the bottom of the active cavity 472, the first pull rod 471 drives the lifting plate 43 at the lower end of the second pull rod 491 to rise with the help of the limit plate 49. Since the center plate 41 is fixedly mounted on the center tube 12 The outer sides of the central plate 41 and the lifting plate 43 are hinged with a set of connecting rods 44, and the outer ends of the two sets of connecting rods 44 are hinged on the clamping plates 45. Therefore, when the lifting plate 43 rises, the two sets of clamping plates 45 will be driven to retract inward. The contraction of the clamping plates 45 will drive the arc strips 461 on the rubber pads 46 to break away from the arc grooves 462 on the first electrode sheet 27 and the second electrode sheet 28, thereby releasing the restriction on the first electrode sheet 27 and the second electrode sheet 28. At this time, the first electrode sheet 27 and the second electrode sheet 28 in the upper cover plate 13 of the central tube 12 can be rotated to adjust them to a suitable angle. After completion, the handle 47 is released. Under the action of the restoring force of the first tension spring 42, the lifting plate 43 will descend. The lifting plate 43 drives the rubber pad 46 on the outer side of the clamping plate 45 to expand outward through the connecting rod 44, so that the arc strip 461 on the rubber pad 46 is stuck in the arc groove 462 provided on the first electrode sheet 27 and the second electrode sheet 28, thereby fixing the direction of the first electrode sheet 27 and the second electrode sheet 28. In addition, since the second tension spring 48 is provided on the upper end of the limit plate 49, after the handle 47 is released, the restoring force of the second tension spring 48 will drive the handle 47 to be stuck on the cover plate 13 through the first tension rod 471. It is beneficial to retract the rubber pad 46 by pulling the handle 47, which is convenient for removing the restrictions on the first electrode piece 27 and the second electrode piece 28, so that they can adjust their directions at will, so that the temperature switch can better adapt to various installation environments and improve the versatility of the temperature switch. The rubber pad 46 is controlled to expand outward by the restoring force of the first tension spring 42, which is convenient for re-fixing the adjusted first electrode piece 27 and the second electrode piece 28, thereby ensuring the stability of the connection between the two. At the same time, the second tension spring 48 is provided to stably place the handle 47 without interfering with the outward expansion positioning effect of the first tension spring 42.

[0031] Working principle: During the operation, transportation and installation of the equipment, vibration forces such as mechanical vibration, bump vibration and installation environment vibration may cause poor contact of the internal contacts of the temperature control switch, thereby affecting the performance and reliability of the temperature control switch. When the temperature control switch is subjected to a large instantaneous vibration force from the outside world, since the first capsule 35 is filled with a non-Newtonian liquid, its viscosity will increase sharply when encountering a fast and instantaneous impact force, thereby generating a large instantaneous reaction force, effectively ensuring the contact effect between the moving contact piece 25 and the static contact piece 22. Even if the instantaneous impact force is strong enough to overcome the yield force of the non-Newtonian liquid, the liquid in the first capsule 35 can only flow slowly into the second capsule 37 through the delivery pipe 36. In this way, the first capsule 35 can not only provide a buffering force to prevent the moving contact piece 25 and the static contact piece 22 from separating quickly, but also the first capsule 3 The first return spring 38 inside the first capsule 35 also acts as a buffer. In addition, the first return spring 38 inside the first capsule 35 and the second return spring 39 inside the second capsule 37 work together to neutralize the swinging force of the movable contact piece 25, making the movable contact piece 25 swing more smoothly. When the temperature inside the temperature switch rises and the bimetallic strip 21 gradually deforms, it will exert a continuous force on the right end of the movable contact piece 25 through the force-bearing frame 24. At this time, the non-Newtonian liquid inside the first capsule 35 and the second capsule 37 has the characteristic that as the temperature rises, the viscosity decreases and the flow rate increases. Under the continuous force, the viscosity gradually decreases over time and the fluidity increases. Based on these characteristics, the liquid in the first capsule 35 can flow steadily into the second capsule 37 through the delivery pipe 36, ultimately separating the movable contact piece 25 from the static contact piece 22, achieving the high-temperature cut-off function. Due to the diversity of the installation environment of the temperature switch, some scenarios require wiring on the left side, and some scenarios require wiring on the right side. This requires that the electrode sheet can flexibly adjust the angle to adapt to different installation environments. In actual use, first pull the handle 47, and the handle 47 will drive the limit plate 49 in the active cavity 472 to slide through the first pull rod 471. When the limit plate 49 slides to the bottom of the active cavity 472, the first pull rod 471 drives the lifting plate 43 at the lower end of the second pull rod 491 to rise with the help of the limit plate 49. Since the center plate 41 is fixedly installed in the center tube 12, and the outer sides of the center plate 41 and the lifting plate 43 are hinged with a group of connecting rods 44, and the outer ends of these two groups of connecting rods 44 are hinged on the splint 45, so in the process of the lifting plate 43 rising, it will drive the two groups of splints 45 to shrink inward, and the shrinkage of the splint 45 will drive the arc strip 461 on the rubber pad 46 to disengage. The arc groove 462 on the first electrode sheet 27 and the second electrode sheet 28 is formed, thereby releasing the restriction on the first electrode sheet 27 and the second electrode sheet 28. At this time, the first electrode sheet 27 and the second electrode sheet 28 in the cover plate 13 on the central tube 12 can be rotated to adjust them to a suitable angle. After the adjustment is completed, the handle 47 is released. Under the action of the restoring force of the first tension spring 42, the lifting plate 43 will drop. The lifting plate 43 drives the rubber pad 46 on the outside of the clamping plate 45 to expand outward through the connecting rod 44, so that the arc strip 461 on the rubber pad 46 is stuck into the arc groove 462 opened on the first electrode sheet 27 and the second electrode sheet 28, thereby achieving the direction fixing of the first electrode sheet 27 and the second electrode sheet 28. In addition, since a second tension spring 48 is provided at the upper end of the limit plate 49, after the handle 47 is released, the restoring force of the second tension spring 48 will drive the handle 47 to be stuck on the cover plate 13 through the first pull rod 471.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A highly sensitive nuclear-grade temperature switch, comprising a base (1), the base (1) comprising a bottom plate (11), a central tube (12) fixedly mounted on the upper end of the bottom plate (11), a cover plate (13) mounted on the upper end of the central tube (12), a temperature control assembly (2) mounted on the base (1), characterized in that: The temperature switch further comprises an anti-interference component (3) and a limit component (4). The anti-interference component (3) utilizes the characteristic of a non-Newtonian liquid that its viscosity increases sharply when subjected to a rapid and instantaneous impact force to generate a strong yield force to limit the separation of the moving contact piece (25) and the static contact piece (22) in a vibration environment. At the same time, it utilizes its characteristic of being able to flow under a continuous and stable force so that the moving contact piece (25) can still be separated from the static contact piece (22) under a continuous force caused by high temperature. The limit component (4) is used to position the first electrode piece (27) and the second electrode piece (28) after the angle is adjusted, and can also retract the handle (47). The anti-interference component (3) includes a guide block box (31) arranged on both sides of the movable contact piece (25), a guide rod (33) is fixedly installed inside the guide block box (31), a guide block (34) is sleeved on the outer side of the guide rod (33), and the guide block (34) is fixedly installed on the movable contact piece (25), the upper end of the guide block (34) is fixedly connected to one end of a first capsule (35), the other end of the first capsule (35) is fixedly connected to the top of the guide block box (31), the bottom end of the guide block (34) is fixedly connected to one end of a second capsule (37), the other end of the second capsule (37) is fixedly connected to the bottom end of the guide block box (31), the inner side of the first capsule (35) is connected to one end of a delivery pipe (36), and the other end of the delivery pipe (36) passes through the guide rod (33) and is connected to the second capsule (37).

2. A highly sensitive nuclear-grade temperature switch according to claim 1, characterized in that: The temperature control assembly (2) includes a bimetallic strip (21) sleeved on a central tube (12); the upper right end of the bimetallic strip (21) is connected to a force-bearing frame (24) and a movable contact piece (25); the lower right end of the force-bearing frame (24) is clamped with the movable contact piece (25); the bottom left end of the movable contact piece (25) is attached to the static contact piece (22); and the upper end of the force-bearing frame (24) is provided with a pin plate (26).

3. A highly sensitive nuclear-grade temperature switch according to claim 2, characterized in that: The left ends of the static contact piece (22), the insulating block (23), the force frame (24) and the ejector plate (26) are all sleeved on the central tube (12), and the bimetallic piece (21), the static contact piece (22), the force frame (24) and the ejector plate (26) are insulated and separated from each other by three groups of insulating blocks (23).

4. A highly sensitive nuclear-grade temperature switch according to claim 1, characterized in that: A bracket (32) is fixedly connected to the outer side of the guide block box (31), and the bracket (32) is installed on the insulating block (23).

5. A highly sensitive nuclear-grade temperature switch according to claim 4, characterized in that: The first capsule (35) and the second capsule (37) are both sleeved on the guide rod (33), and the fluids in the first capsule (35) and the second capsule (37) are both non-Newtonian liquids.

6. A highly sensitive nuclear-grade temperature switch according to claim 4, characterized in that: The central axis of the circle to which the arc of the guide rod (33) belongs is the same as the central axis of the circle to which the swing arc of the movable contact piece (25) belongs, so as to avoid affecting the swing trajectory of the movable contact piece (25).

7. The highly sensitive nuclear-grade temperature switch according to claim 4, characterized in that: A first return spring (38) is provided inside the first sac (35), and a second return spring (39) is provided inside the second sac (37).

8. The highly sensitive nuclear-grade temperature switch according to claim 1, characterized in that: The limiting assembly (4) includes a center plate (41) fixedly mounted inside the center tube (12), the upper end of the center plate (41) is fixedly connected to a first tension spring (42), the upper end of the first tension spring (42) is fixedly connected to a lifting plate (43), the outer sides of the center plate (41) and the lifting plate (43) are hinged with a group of connecting rods (44), the outer ends of the two groups of connecting rods (44) are hinged to a clamping plate (45), the outer side of the clamping plate (45) is fixedly mounted with a rubber pad (46), and the rubber pad (46) is provided with an arc strip (461).

9. A highly sensitive nuclear-grade temperature switch according to claim 8, characterized in that: Two groups of slots (14) are provided on the outer side of the central tube (12), and the two groups of slots (14) are respectively provided with a first electrode sheet (27) and a second electrode sheet (28). The first electrode sheet (27) is attached to the bottom end of the static contact sheet (22), and the second electrode sheet (28) is attached to the upper end of the force-bearing frame (24). The inner sides of the first electrode sheet (27) and the second electrode sheet (28) are both provided with an arc groove (462) for facilitating the insertion of the arc strip (461). The outer side of the central tube (12) is provided with a movable channel (15) for facilitating the passage of the rubber pad (46).

10. The highly sensitive nuclear-grade temperature switch according to claim 8, characterized in that: A handle (47) is placed at the upper end of the cover plate (13), and the bottom end of the handle (47) is fixedly connected to a first pull rod (471), and a movable cavity (472) is opened at the bottom end of the first pull rod (471), and the top end of the movable cavity (472) is fixedly connected to one end of a second tension spring (48), and the other end of the second tension spring (48) is fixedly connected to the limit plate (49), and the restoring force of the second tension spring (48) can be overcome by the restoring force of the first tension spring (42), and the bottom end of the limit plate (49) is fixedly connected to one end of a second pull rod (491), and the other end of the second pull rod (491) is fixedly connected to the lifting plate (43).

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