A fast-response electric shut-off valve for nuclear power

Abstract

The invention relates to the technical field of electric stop valves, and discloses an electric stop valve with rapid response for nuclear power, which solves the problem that the existing electric stop valve with rapid response for nuclear power usually adopts an annular clip to connect with the pipelines at both ends, the annular clip is connected slowly and has no tightness, resulting in a gap at the connection between the pipeline and the valve body. The valve body comprises a valve body, an electric actuator is fixedly installed on the upper part of the valve body, the output end of the electric actuator is transmission-connected with the valve stem, three support columns are fixedly installed at the front of the valve body at equal distances, an equipment box is fixedly installed between one ends of the three support columns, a driving motor is fixedly installed on the inner bottom of the equipment box, and mounting heads are fixedly installed at both ends of the valve body. The electric stop valve with rapid response for nuclear power can quickly and conveniently fix the pipeline, and can press the pipeline against the valve body, thereby reducing the gap and improving the sealing effect, avoiding leakage of the medium.

Description

Technical Field

[0001] The invention belongs to the technical field of electric stop valves, and in particular relates to a fast-response electric stop valve for nuclear power. Background Art

[0002] The electric stop valve with fast response for nuclear power usually refers to an efficient and reliable valve designed and manufactured specifically for nuclear power plants. This electric stop valve combines the fast response characteristics of the electric actuator and the fluid control function of the stop valve, and is very suitable for occasions in nuclear power plants that require precise and fast control of fluid flow. The working principle of the electric stop valve is that the motor drives the valve core or valve plate to rotate through the reducer to change the opening of the valve. When the fluid needs to be cut off, the motor drives the valve core or valve plate to rotate to the closed position to cut off the fluid; when the fluid needs to be opened, the motor drives the valve core or valve plate to rotate to the open position to allow the fluid to pass. The electric actuator can quickly receive control signals and drive the valve to open and close to achieve rapid response; the electric stop valve with rapid response for nuclear power is an efficient and reliable valve with the characteristics of rapid response, precise control, high reliability and easy maintenance; it plays an important role in nuclear power plants to ensure the stable operation of nuclear reactors and cooling systems; the existing electric stop valve with rapid response for nuclear power usually uses annular clips to connect with the pipes at both ends. The annular clip connection speed is slow and can only be used for fixing, and has no tightening ability, resulting in a gap at the connection between the pipe and the valve body, which is easy to cause medium leakage, and its use effect is not good. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a fast-response electric stop valve for nuclear power, which effectively solves the problem that the existing fast-response electric stop valve for nuclear power in the above background technology usually adopts annular clips to connect with the pipes at both ends, and the annular clips have slow connection speed and no tightening ability, resulting in a gap at the connection between the pipe and the valve body.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric stop valve for nuclear power with rapid response, comprising a valve body, an electric actuator fixedly installed on the upper part of the valve body, the output end of the electric actuator is transmission-connected to the valve stem, three support columns are fixedly installed at equal distances on the front part of the valve body, an equipment box is fixedly installed between one ends of the three support columns, a driving motor is fixedly installed on the inner bottom of the equipment box, mounting heads are fixedly installed on both ends of the valve body, connectors are plugged into the insides of the two mounting heads, pipes are fixedly installed on the sides of the two connectors away from each other, and fixing rings are fixedly installed on the sides of the two mounting heads close to the valve body. A sealing ring is fixedly installed on the side of the two fixing rings away from each other, a transmission block is fixedly installed on the upper and lower sides of the two pipes, a mounting bar is fixedly installed on the upper and lower parts of the two mounting heads away from each other, a socket is provided at the end of the four mounting bars, pushing rods are plugged into the inside of the four sockets, a ring groove is provided on the inner walls of the two mounting heads, clamps are provided on the upper and lower sides of the two ring grooves, sealing pads are fixedly installed on the inner walls of the four clamps, a transmission assembly is provided at the output end of the driving motor, the transmission assembly is connected to the four pushing rods and the four clamps, and when the driving motor is running, power is output to the four pushing rods and the four clamps through the transmission assembly.

[0005] Preferably, a limiting groove is provided on the inner wall of one side of the socket, a limiting strip is fixedly installed on one side of the four pushing rods, the four limiting strips are slidably installed inside the four limiting grooves, plug rods are fixedly installed on the upper and lower sides of the two connecting heads, two slots are provided on the surface of the two mounting heads away from each other, and the four plug rods are inserted into the four slots.

[0006] Preferably, the transmission assembly includes a worm, which is fixedly mounted on the output end of the driving motor, the top of the worm is rotatably connected to the inner top of the equipment box through an axle seat, the surface of the worm is meshingly connected with a worm wheel, and a shaft is fixedly mounted in the middle of the worm wheel.

[0007] Preferably, four bushings are rotatably mounted on the surface of the shaft rod, the bottoms of the four bushings are fixedly connected to the inner bottom of the equipment box through a fixing seat, threaded rods are fixedly mounted at both ends of the shaft rod, and threaded sleeves are threadedly connected to the surfaces of the two threaded rods.

[0008] Preferably, sliding sleeves are fixedly installed on the upper and lower sides of the two threaded sleeves, sliding rods are inserted into the inside of the sliding sleeves, one end of the four sliding rods are fixedly connected to the inner walls of the two ends of the equipment box respectively, and the other ends of the four sliding rods are fixedly connected to the inside of the equipment box through fixing rods.

[0009] Preferably, the two threaded sleeves are fixedly installed with connecting strips at the ends away from each other, connecting rods are fixedly installed at both ends of the two connecting strips close to the mounting head, pushing strips are fixedly installed at the ends of the connecting rods away from the connecting strips, and sliders are fixedly installed on the sides of the four pushing strips close to the mounting head, and sliding grooves are provided on the upper and lower surfaces of the two mounting heads, and the four sliders are slidably installed inside the four sliding grooves respectively.

[0010] Preferably, the inclined surface of one end of the pushing strip is tightly attached to the contact head, and a rectangular rod is fixedly installed on the side of the contact head close to the mounting head. The ends of the rectangular rod away from the contact head extend to the inside of the two circle grooves and are fixedly connected to four clamps respectively. A rectangular sleeve is sleeved on one end of the surface of the rectangular rod, and the four rectangular sleeves are fixedly connected to the middle parts of the upper and lower sides of the two mounting heads respectively. A spring is sleeved on the other end of the surface of the rectangular rod, and the two ends of the four springs are fixedly connected to the rectangular sleeve and the contact head respectively.

[0011] Preferably, a rack is fixedly installed on one end of the pushing bar away from the mounting head, a limiting sleeve is fixedly installed on the side of the rack away from the mounting head, a limiting rod is inserted inside the limiting sleeve, and both ends of the four limiting rods are fixedly connected to the two mounting heads and the four mounting bars through a positioning frame.

[0012] Preferably, the rack is meshed with a first gear on one side close to the mounting head, one side of the four first gears is rotatably connected to the four mounting bars via a rotating frame, a driving sprocket is fixedly installed on the other side of the four first gears, a second gear is rotatably installed on the four mounting bars away from the pipe via a rotating frame, a driven sprocket is fixedly installed on one side of the second gear, chains are meshed with the four driven sprockets and the four driving sprockets, and the four second gears are meshed with one side of the four pushing rods, respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) During operation, the electric actuator can quickly drive the valve stem to rotate, thereby quickly opening or closing the valve, thereby achieving a quick response effect; during installation, the operator inserts the two connectors on the two pipes into the valve body; the installation heads at both ends, and at the same time inserts the four plug rods into the inside of the four slots for limiting, and then the operator starts the drive motor to drive the worm to rotate along the shaft seat. When the worm rotates, the shaft rod is driven by the worm gear to rotate along the inside of the four sleeves. When the shaft rod rotates, it drives the two threaded rods to rotate. When the two threaded rods rotate, they drive the two threaded sleeves to move back and forth. When the two threaded sleeves move, they drive the sliding sleeves to slide on the surface of the sliding rod, which increases the stability of the two threaded sleeves when they move. When the two threaded sleeves move back and forth, the two connecting rods are pushed to move by the two connecting bars. When the four connecting rods move, they drive the four pushing bars to move. When the four pushing bars move, they drive the slider to slide inside the slide groove, which increases the stability of the pushing bars when they move;

[0015] When the four pushing strips move, the four contact heads push the four rectangular rods to move along the inside of the four rectangular sleeves and squeeze the four springs at the same time, thereby ensuring the movement stability of the four rectangular rods while making them have the effect of elastic reset. When the four rectangular rods move, they drive the four clamps to clamp and fix the two connecting heads inside the two mounting heads, and the cooperation of the four sealing pads can ensure the sealing effect.

[0016] (2) When the four pushing bars move, they will also drive the four racks to move. When the four racks move, they will drive the limit sleeves to slide on the surface of the limit rods, thereby increasing the stability of the four racks when they move. When the four racks move, they will drive the four driving sprockets to rotate through the four first gears. When the four driving sprockets rotate, they will drive the four driven sprockets to rotate through the four chains. When the four driven sprockets rotate, they will drive the four pushing rods to move along the inside of the four jacks through the four second gears. When the four pushing rods move, they will drive the limit bars to slide inside the limit grooves, thereby increasing the stability of the four pushing rods when they move. When the four pushing rods move, they will push the two pipes toward each other through the transmission block, thereby driving the two connecting heads to press against the two sealing rings on the two fixing rings through the two pipes, thereby reducing the gap and improving the sealing performance;

[0017] (3) The electric stop valve for nuclear power with rapid response can quickly and conveniently fix the pipeline, and can press the pipeline against the valve body, thereby reducing the gap and improving the sealing effect, avoiding leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is a schematic diagram of the structure of the electric stop valve capable of rapid response used in nuclear power of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the equipment box of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the mounting head of the present invention;

[0023] Figure 4 For the present invention Figure 2 The enlarged structural diagram of the equipment box in the middle;

[0024] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle mounting head;

[0025] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0026] Figure 7 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0027] In the figure: 1, valve body; 2, electric actuator; 3, support column; 4, equipment box; 5, drive motor; 6, mounting head; 7, connector; 8, pipe; 9, fixing ring; 10, sealing ring; 11, transmission block; 12, mounting strip; 13, pushing rod; 14, limiting strip; 15, limiting groove; 16, plug hole; 17, ring groove; 18, clamp; 19, sealing gasket; 20, plug rod; 21, slot; 22, worm; 23, worm wheel; 24, shaft seat; 25, shaft rod; 26, shaft sleeve; 27. Fixed seat; 28. Threaded rod; 29. ​​Threaded sleeve; 30. Sliding sleeve; 31. Sliding rod; 32. Fixed rod; 33. Connecting strip; 34. Connecting rod; 35. Pushing strip; 36. Sliding block; 37. Sliding groove; 38. Contact head; 39. Rectangular rod; 40. Rectangular sleeve; 41. Spring; 42. Rack; 43. Limiting sleeve; 44. Limiting rod; 45. Positioning frame; 46. First gear; 47. Driving sprocket; 48. Second gear; 49. Driven sprocket; 50. Chain. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Embodiment 1, by Figures 1 to 7 The present invention comprises a valve body 1, an electric actuator 2 is fixedly installed on the upper part of the valve body 1, the output end of the electric actuator 2 is transmission-connected to the valve stem, three support columns 3 are fixedly installed at the front of the valve body 1 at equal distances, an equipment box 4 is fixedly installed between one ends of the three support columns 3, a driving motor 5 is fixedly installed on the inner bottom of the equipment box 4, mounting heads 6 are fixedly installed on both ends of the valve body 1, connecting heads 7 are plugged into the insides of the two mounting heads 6, pipes 8 are fixedly installed on the sides of the two connecting heads 7 away from each other, fixing rings 9 are fixedly installed on the sides of the two mounting heads 6 close to the valve body 1, sealing rings 10 are fixedly installed on the sides of the two fixing rings 9 away from each other, transmission blocks 11 are fixedly installed on the upper and lower sides of the two pipes 8, mounting strips 12 are fixedly installed on the upper and lower parts of the sides of the two mounting heads 6 away from each other, and the ends of the four mounting strips 12 are provided with sockets 1 6, pushing rods 13 are inserted into the inside of the four jacks 16, and circular grooves 17 are provided on the inner walls of the two mounting heads 6. Clamps 18 are provided on the upper and lower sides of the two circular grooves 17, and sealing gaskets 19 are fixedly installed on the inner walls of the four clamps 18. A transmission assembly is provided at the output end of the driving motor 5, and the transmission assembly is transmission-connected with the four pushing rods 13 and the four clamps 18. When the driving motor 5 is running, the power is output to the four pushing rods 13 and the four clamps 18 through the transmission assembly; a limiting groove 15 is provided on the inner wall of one side of the jack 16, and a limiting strip 14 is fixedly installed on one side of the four pushing rods 13, and the four limiting strips 14 are slidably installed inside the four limiting grooves 15, and plug rods 20 are fixedly installed on the upper and lower sides of the two connecting heads 7, and two slots 21 are provided on the surfaces of the two mounting heads 6 away from each other, and the four plug rods 20 are inserted into the inside of the four slots 21.

[0030] During operation, the electric actuator 2 can quickly drive the valve stem to rotate, thereby quickly opening or closing the valve, thereby achieving a quick response effect; during installation, the operator inserts the two connectors 7 on the two pipes 8 into the valve body 1; the installation heads 6 at both ends, and at the same time inserts the four insertion rods 20 into the inside of the four slots 21 for limiting, and then the operator starts the drive motor 5 to drive the transmission component to operate. When the transmission component operates, it will drive the four clamps 18 to clamp and fix the two connectors 7 inside the two installation heads 6, and at the same time, the sealing effect can be ensured by the cooperation of the four sealing pads 19;

[0031] When the transmission assembly is running, it will also drive the four pushing rods 13 to move along the inside of the four jacks 16. When the four pushing rods 13 move, they will drive the limit strips 14 to slide inside the limit grooves 15, thereby increasing the stability of the four pushing rods 13 when moving. When the four pushing rods 13 move, they will push the two pipes 8 to move toward each other through the transmission block 11, thereby driving the two connecting heads 7 to press against the two sealing rings 10 on the two fixing rings 9 through the two pipes 8, thereby reducing the gap and improving the sealing performance; the electric stop valve with rapid response for nuclear power can quickly and conveniently fix the pipe 8, and can press the pipe 8 against the valve body 1, thereby reducing the gap and improving the sealing effect, avoiding leakage of the medium.

[0032] Embodiment 2, on the basis of embodiment 1, the transmission assembly includes a worm 22, the worm 22 is fixedly mounted on the output end of the driving motor 5, the top of the worm 22 is rotatably connected to the inner top of the equipment box 4 through the shaft seat 24, the surface of the worm 22 is meshedly connected with a worm wheel 23, and the middle of the worm wheel 23 is fixedly mounted with a shaft rod 25; four shaft sleeves 26 are rotatably mounted on the surface of the shaft rod 25, the bottoms of the four shaft sleeves 26 are fixedly connected to the inner bottom of the equipment box 4 through a fixing seat 27, both ends of the shaft rod 25 are fixedly mounted with threaded rods 28, and the surfaces of the two threaded rods 28 are threadedly connected with threaded sleeves 29; sliding sleeves 30 are fixedly mounted on the upper and lower sides of the two threaded sleeves 29, and sliding rods 31 are inserted into the interior of the sliding sleeves 30, one end of the four sliding rods 31 is respectively fixedly connected to the inner walls of the two ends of the equipment box 4, and the other ends of the four sliding rods 31 are fixedly connected to the inside of the equipment box 4 through a fixing rod 32; the ends of the two threaded sleeves 29 away from each other are fixedly mounted with a connecting strip 3 3. Connecting rods 34 are fixedly installed at both ends of the two connecting strips 33 close to the mounting head 6, and pushing strips 35 are fixedly installed at one end of the connecting rods 34 away from the connecting strips 33. Slide blocks 36 are fixedly installed on one side of the four pushing strips 35 close to the mounting head 6. Slide grooves 37 are provided on the surfaces of the upper and lower sides of the two mounting heads 6, and the four slide blocks 36 are slidably installed in the four slide grooves 37 respectively; the inclined surface of one end of the pushing strip 35 is tightly attached to the contact head 38, and a rectangular rod 39 is fixedly installed on the side of the contact head 38 close to the mounting head 6. The ends of the rectangular rod 39 away from the contact head 38 extend to the inside of the two ring grooves 17 respectively and are fixedly connected to the four clamps 18 respectively, and one end of the surface of the rectangular rod 39 is sleeved with a rectangular sleeve 40, and the four rectangular sleeves 40 are respectively fixedly connected to the middle parts of the upper and lower sides of the two mounting heads 6, and the other end of the surface of the rectangular rod 39 is sleeved with a spring 41, and the two ends of the four springs 41 are respectively fixedly connected to the rectangular sleeve 40 and the contact head 38.

[0033] The operator starts the driving motor 5 to drive the worm 22 to rotate along the shaft seat 24. When the worm 22 rotates, the shaft 25 is driven to rotate along the inside of the four shaft sleeves 26 through the worm wheel 23. When the shaft 25 rotates, it drives the two threaded rods 28 to rotate. When the two threaded rods 28 rotate, they drive the two threaded sleeves 29 to move back and forth. When the two threaded sleeves 29 move, they drive the sliding sleeves 30 to slide on the surface of the sliding rod 31, which increases the stability of the two threaded sleeves 29 when they move. When the two threaded sleeves 29 move back and forth, they push the four connecting rods 34 to move through the two connecting bars 33. When the four connecting rods 34 move, they drive the four pushing bars 35 to move. When the four pushing bars 35 move, they drive the slider 36 to slide inside the slide groove 37, which increases the stability of the pushing bars 35 when they move.

[0034] When the four pushing strips 35 move, they will push the four rectangular rods 39 through the four contact heads 38 to move along the inside of the four rectangular sleeves 40 and squeeze the four springs 41 at the same time, so as to ensure the movement stability of the four rectangular rods 39 while giving them an elastic reset effect. When the four rectangular rods 39 move, they will drive the four clamps 18 to move and clamp.

[0035] Embodiment 3, on the basis of embodiment 2, a rack 42 is fixedly installed on one end of the pushing bar 35 away from the mounting head 6, a limiting sleeve 43 is fixedly installed on the side of the rack 42 away from the mounting head 6, a limiting rod 44 is inserted inside the limiting sleeve 43, and both ends of the four limiting rods 44 are fixedly connected to the two mounting heads 6 and the four mounting bars 12 through a positioning frame 45; a first gear 46 is meshed and connected on the side of the rack 42 close to the mounting head 6, one side of the four first gears 46 is rotatably connected to the four mounting bars 12 through a rotating frame, a driving sprocket 47 is fixedly installed on the other side of the four first gears 46, a second gear 48 is rotatably installed on the side of the four mounting bars 12 away from the pipe 8 through a rotating frame, a driven sprocket 49 is fixedly installed on one side of the second gear 48, a chain 50 is meshed and connected between the four driven sprockets 49 and the four driving sprockets 47, and the four second gears 48 are respectively meshed and connected with one side of the four pushing rods 13.

[0036] When the four pushing bars 35 move, they will also drive the four racks 42 to move. When the four racks 42 move, they will drive the limiting sleeves 43 to slide on the surface of the limiting rod 44, thereby increasing the stability of the four racks 42 when moving. When the four racks 42 move, they will drive the four driving sprockets 47 to rotate through the four first gears 46. When the four driving sprockets 47 rotate, they will drive the four driven sprockets 49 to rotate through the four chains 50. When the four driven sprockets 49 rotate, they will drive the four pushing rods 13 to move and push through the four second gears 48.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast-response electric stop valve for nuclear power, comprising a valve body (1), characterized in that: An electric actuator (2) is fixedly installed on the upper part of the valve body (1), and the output end of the electric actuator (2) is drivingly connected to the valve stem. Three support columns (3) are fixedly installed at the front of the valve body (1) at equal distances, and an equipment box (4) is fixedly installed between one end of the three support columns (3). A driving motor (5) is fixedly installed on the inner bottom of the equipment box (4). Mounting heads (6) are fixedly installed on both ends of the valve body (1), and connecting heads (7) are inserted into the inside of the two mounting heads (6). Pipes (8) are fixedly installed on the sides of the two connecting heads (7) away from each other. Fixed rings (9) are fixedly installed on the sides of the two mounting heads (6) close to the valve body (1), and sealing rings (10) are fixedly installed on the sides of the two fixing rings (9) away from each other. The two pipes (8) Transmission blocks (11) are fixedly installed on both upper and lower sides of the two mounting heads (6), mounting strips (12) are fixedly installed on the upper and lower parts of the sides away from each other, four mounting strips (12) are provided with plug holes (16) at the ends, and pushing rods (13) are inserted into the four plug holes (16), the inner walls of the two mounting heads (6) are provided with ring grooves (17), the upper and lower sides of the two ring grooves (17) are provided with clamps (18), and the inner walls of the four clamps (18) are fixedly installed with sealing pads (19), and the output end of the driving motor (5) is provided with a transmission assembly, which is in transmission connection with the four pushing rods (13) and the four clamps (18), and when the driving motor (5) is running, power is output to the four pushing rods (13) and the four clamps (18) through the transmission assembly.

2. The electric stop valve with quick response for nuclear power according to claim 1, characterized in that: The inner wall of one side of the insertion hole (16) is provided with a limiting groove (15), one side of the four pushing rods (13) is fixedly installed with a limiting strip (14), the four limiting strips (14) are slidably installed inside the four limiting grooves (15), the upper and lower sides of the two connecting heads (7) are fixedly installed with an insertion rod (20), the surfaces of the two mounting heads (6) away from each other are provided with two slots (21), and the four insertion rods (20) are inserted into the four slots (21).

3. The electric stop valve with quick response for nuclear power according to claim 1, characterized in that: The transmission assembly comprises a worm (22), the worm (22) being fixedly mounted on the output end of the driving motor (5), the top of the worm (22) being rotatably connected to the inner top of the equipment box (4) via a shaft seat (24), the surface of the worm (22) being meshingly connected with a worm wheel (23), and a shaft (25) being fixedly mounted in the middle of the worm wheel (23).

4. The electric stop valve with quick response for nuclear power according to claim 3 is characterized in that: Four shaft sleeves (26) are rotatably mounted on the surface of the shaft rod (25), the bottoms of the four shaft sleeves (26) are fixedly connected to the inner bottom of the equipment box (4) through a fixing seat (27), threaded rods (28) are fixedly mounted on both ends of the shaft rod (25), and threaded sleeves (29) are threadedly connected to the surfaces of the two threaded rods (28).

5. The electric stop valve with quick response for nuclear power according to claim 4, characterized in that: Slide sleeves (30) are fixedly installed on both upper and lower sides of the two threaded sleeves (29), and slide rods (31) are inserted into the interior of the slide sleeves (30). One end of the four slide rods (31) is fixedly connected to the inner walls of the two ends of the equipment box (4), and the other ends of the four slide rods (31) are fixedly connected to the interior of the equipment box (4) through fixed rods (32).

6. The electric stop valve with quick response for nuclear power according to claim 4, characterized in that: A connecting strip (33) is fixedly installed at one end of the two threaded sleeves (29) away from each other, a connecting rod (34) is fixedly installed at both ends of the two connecting strips (33) close to the mounting head (6), a pushing strip (35) is fixedly installed at one end of the connecting rod (34) away from the connecting strip (33), a sliding block (36) is fixedly installed at one side of the four pushing strips (35) close to the mounting head (6), and sliding grooves (37) are provided on the upper and lower surfaces of the two mounting heads (6), and the four sliding blocks (36) are slidably installed in the inside of the four sliding grooves (37) respectively.

7. The electric stop valve with quick response for nuclear power according to claim 6, characterized in that: The inclined surface at one end of the pushing strip (35) is in close contact with a contact head (38), and a rectangular rod (39) is fixedly installed on one side of the contact head (38) close to the mounting head (6). One end of the rectangular rod (39) away from the contact head (38) extends to the inside of the two ring grooves (17) and is fixedly connected to four clamps (18) respectively. One end of the surface of the rectangular rod (39) is sleeved with a rectangular sleeve (40), and the four rectangular sleeves (40) are respectively fixedly connected to the middle of the upper and lower sides of the two mounting heads (6). The other end of the surface of the rectangular rod (39) is sleeved with a spring (41), and the two ends of the four springs (41) are respectively fixedly connected to the rectangular sleeve (40) and the contact head (38).

8. The electric stop valve with quick response for nuclear power according to claim 7, characterized in that: A rack (42) is fixedly mounted on one end of the pushing bar (35) away from the mounting head (6), a limiting sleeve (43) is fixedly mounted on one side of the rack (42) away from the mounting head (6), a limiting rod (44) is inserted inside the limiting sleeve (43), and both ends of the four limiting rods (44) are fixedly connected to the two mounting heads (6) and the four mounting bars (12) through positioning frames (45).

9. The electric stop valve capable of rapid response for nuclear power according to claim 8, characterized in that: The rack (42) is meshedly connected with a first gear (46) on one side close to the mounting head (6); one side of the four first gears (46) is rotatably connected to the four mounting bars (12) via a rotating frame; a driving sprocket (47) is fixedly installed on the other side of the four first gears (46); a second gear (48) is rotatably installed on one side of the four mounting bars (12) away from the pipe (8) via a rotating frame; a driven sprocket (49) is fixedly installed on one side of the second gear (48); chains (50) are meshedly connected between the four driven sprockets (49) and the four driving sprockets (47); and the four second gears (48) are meshedly connected with one side of the four pushing rods (13) respectively.

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