Recording device for operation of power plant unit

Abstract

The invention discloses a recording device for operation of a power plant unit, and relates to the technical field of electrical variable measuring devices. The invention discloses a recording device for operation of a power plant unit. The recording device comprises two probes which are respectively arranged on the back surface of a shell of an electric power recorder in a sliding manner; according to the invention, after the electric power recorder is used and measurement is completed, the probe is stored and the rubber roll is pulled out for numerical value recording, the rubber wheel rotates and stretches out, the probe is automatically driven to move on the shell of the electric power recorder, and in the displacement process, the probe is automatically driven to move on the shell of the electric power recorder. When the rubber roll is pulled out, the conical head at the front end of the probe and the metal needle are driven to be automatically bent to tend to 90 degrees, so that the metal needle enters the protective sleeve, the metal needle on the probe is protected through the protective sleeve, the metal needle is prevented from being abraded, and after the rubber roll is pulled out, a user can conveniently record a measurement result on paper of the rubber roll. Therefore, when one person carries out measurement operation, measurement and writing and recording of numerical values can be easily realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of devices for measuring electrical variables, and more specifically, relates to a recording device for the operation of power plant units. Background Art

[0002] A power plant refers to a power plant that converts a certain form of primary energy into electrical energy for use in fixed facilities or transportation, such as thermal power plants, hydropower plants, steam power plants, diesel power plants, or nuclear power plants. Most of the existing recording devices used in power plant units are power analysis recorders, which are instruments used to measure power quality, power, harmonics, and flicker and can display real-time oscilloscopes and digital meters on a computer.

[0003] To record the electrical parameters of power plant units, a handheld power recorder is mostly used. During the process of using this power recorder to measure power plant units, by bringing two probes into contact with the device to be measured respectively to form a circuit, the required values can be measured. The existing probes are roughly the same as signature pens, with the end with a metal needle integrally set with the probe handle body. There is no protection device at the metal needle, which easily causes wear of the metal needle. Moreover, one end of the metal needle is usually relatively sharp, which may cause harm to the user. In addition, a power recorder usually requires one person to hold the recorder with both hands to measure the unit, and another person uses a pen and paper to record the measured data in detail. However, when it comes to the situation of single-person measurement, the operation is rather inconvenient. Therefore, a recording device for the operation of power plant units is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a recording device for the operation of power plant units that can overcome the above problems or at least partially solve the above problems.

[0005] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is as follows: A recording device for the operation of power plant units includes: two probes respectively slidably arranged on the back surface of the housing of the power recorder. The probe includes a handle body and a conical head rotatably connected to the front end of the handle body through a torsion spring, and a metal needle is arranged on the conical head; a protective kit symmetrically arranged on the side surface of the housing, and the protective kit is perpendicular to the housing; a rubber roll member drawn and arranged on the bottom surface of the housing, and a piece of paper is arranged on the rubber roll member. Pull the rubber roll member to extend towards one side of the housing and connect it to the end of the probe. When pulling the rubber roll member, drive the front ends of the two probes to approach the protective kit, and make the conical head bend upward and enter the protective kit.

[0006] Preferably, two groups of buckles are symmetrically and fixedly connected to the bottom surface of the housing. The number of buckles in each group is not less than two. Each buckle includes a base and an arc-shaped clamp integrally formed with the base. The handle of the probe is clamped in the arc-shaped clamp.

[0007] Preferably, the protective kit includes a first protective sleeve. The top end of the first protective sleeve is closed, and the side away from the housing is open. The length of the open part is two-thirds of the length of the first protective sleeve.

[0008] Preferably, the protective kit includes a second protective sleeve and a connecting sleeve. The connecting sleeve is fixedly connected to the housing, and the second protective sleeve is slidably connected to the connecting sleeve. The connecting sleeve is open at one end and closed at the other end.

[0009] Preferably, arc-shaped guide plates are fixedly connected to both sides of the housing where the protective kit is located through fixing rods. A gap is formed between the two arc-shaped guide plates, and the arc-shaped guide plates correspond to the conical head.

[0010] Preferably, an installation cylinder is fixedly connected to the bottom surface of the housing. A connecting shaft is rotatably connected in the installation cylinder. Both ends of the connecting shaft are respectively connected to the installation cylinder through spiral springs to store energy for the reverse rotation of the connecting shaft when pulling the rubber roll; one end of the rubber roll is connected to the connecting shaft, and a slit is formed in the installation cylinder. The rubber roll passes through the slit and extends outside the installation cylinder; a pull rod is fixedly connected to the end of the rubber roll away from the connecting shaft, and a limit buckle is fixedly connected to one end of the handle. The pull rod corresponds to the limit buckle.

[0011] Preferably, collar rings and threaded seats are respectively fixedly connected to the outer peripheries of both ends of the installation cylinder. A multi-faceted sleeve is rotatably and slidably connected in the collar ring. A multi-faceted block is slidably connected in the multi-faceted sleeve. A connecting rod is fixedly connected to the multi-faceted block. External threads are formed at one end of the connecting rod. The connecting rod is threadedly connected to the threaded seat through the external threads. Both ends of the connecting shaft extend outside the installation cylinder, and first gears are fixedly connected to both ends of the connecting shaft. A second gear is fixedly connected to the outer periphery of the multi-faceted sleeve. The first gear and the second gear are meshed with each other. A rubber wheel is connected to one end of the connecting rod through a ratchet. The rubber wheel is located between the probe and the housing and corresponds to the handle of the probe.

[0012] Further, a sleeve is further included. A piston block is slidably connected in the sleeve. A connecting pipe is fixedly communicated with the sleeve. The connecting pipe leads to the first protective sleeve to blow air on the metal needle in the first protective sleeve when the piston block slides in the sleeve.

[0013] Further, it further includes a sleeve, in which a piston block is slidably connected. The sleeve is respectively fixedly communicated with an air suction pipe and an exhaust pipe. One-way valves are arranged in both the air suction pipe and the exhaust pipe. The air suction pipe leads to the second protective sleeve to suck the gas in the second protective sleeve when the piston block slides in the sleeve.

[0014] Further, symmetrically fixedly connected to the side of the outer shell away from the protective kit are guiding frames, in which guiding grooves are formed. A limiting block is fixedly connected to the handle body of the probe, and the limiting block slides in the guiding groove.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: When the power recorder is used up and the probe is stored, and the rubber roll is pulled out for numerical recording, the rubber wheel rotates and extends to automatically drive the probe to displace on the outer shell of the power recorder. During the displacement process, the conical head and the metal needle at the front end of the probe are automatically bent to approximately 90 degrees, so that the metal needle enters the protective kit. The protective kit protects the metal needle on the probe to avoid wear of the metal needle. After the rubber roll is pulled out, it is very convenient for the user to record the measurement results on the paper of the rubber roll, thereby realizing that when a person performs measurement operations, it is also possible to easily perform measurement and writing and recording of numerical values.

[0016] Secondly, in one embodiment, when the rubber roll is pulled out and the connecting rod displaces in the direction away from the installation cylinder, the piston block will be pulled to move in the sleeve. When the piston block moves, air enters the sleeve through the connecting pipe. Subsequently, when the rubber roll retracts, the gas in the sleeve is squeezed by the piston block and blown through the connecting pipe onto the metal needle located in the first protective sleeve to clean the surface of the metal needle, avoid stains on the surface of the metal needle affecting subsequent measurement use, and at the same time can appropriately dry the liquid remaining on the metal needle (such as sweat on the hand, moisture in humid air), slowing down the oxidation rate of the metal needle.

[0017] In another embodiment, when the rubber roll is pulled, when the connecting rod displaces in the direction away from the installation cylinder and the piston block slides in the sleeve, the gas in the second protective sleeve is sucked through the air suction pipe, reducing the oxidation of the metal needle by the gas in the second protective sleeve. When the connecting rod is reset, the gas in the sleeve is discharged through the exhaust pipe.

[0018] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0019] In the drawings:

[0020] Figure 1Schematic three-dimensional structure diagram of a recording device for power plant unit operation proposed by the present invention;

[0021] Figure 2 Schematic structure diagram of the arc-shaped guide plate and fixed rod of a recording device for power plant unit operation proposed by the present invention;

[0022] Figure 3 Bottom view of a recording device for power plant unit operation proposed by the present invention;

[0023] Figure 4 For a recording device for power plant unit operation proposed by the present invention Figure 2 Left side view;

[0024] Figure 5 Schematic structure diagram of the installation cylinder and sleeve of a recording device for power plant unit operation proposed by the present invention;

[0025] Figure 6 Schematic structure diagram of the limit buckle of a recording device for power plant unit operation proposed by the present invention;

[0026] Figure 7 Schematic structure diagram of the probe of a recording device for power plant unit operation proposed by the present invention;

[0027] Figure 8 For a recording device for power plant unit operation proposed by the present invention Figure 7 Schematic structure diagram of the part at A in;

[0028] Figure 9 Schematic structure diagram of the second protective sleeve of a recording device for power plant unit operation proposed by the present invention;

[0029] Figure 10 For a recording device for power plant unit operation proposed by the present invention Figure 2 Schematic structure diagram of the part at B in.

[0030] In the figure: 1. Power recorder; 11. Display screen; 12. Button; 13. Housing; 14. Probe; 141. Shank; 142. Tapered head; 143. Metal needle; 144. Limit buckle; 15. Snap; 151. Guide frame; 152. Guide groove; 153. Limit block; 16. Arc-shaped guide plate; 161. Fixed rod; 162. First protective sleeve; 163. Universal rod; 164. Light-shielding plate; 17. Second protective sleeve; 171. Connecting sleeve; 2. Installation cylinder; 20. Slit; 21. Connecting shaft; 22. Spiral spring; 23. Rubber roll; 24. Pull rod; 25. First gear; 3. Multi-faceted sleeve; 30. Collar; 31. Connecting rod; 32. External thread; 33. Multi-faceted block; 34. Rubber wheel; 340. Ratchet; 35. Threaded seat; 36. Piston block; 37. Sleeve; 38. Connecting pipe; 39. Second gear; 4. Suction pipe; 41. Exhaust pipe. Specific embodiments

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0032] The following combines the attached Figure 1 - attached Figure 9 , and will detail the technical solutions provided by each embodiment of the present invention.

[0033] It should be noted that Figure 1 , Figure 2 , Figure 6 , Figure 9 , the position of the rubber roll 23 shown in the figure is a schematic diagram of the position after the rubber roll 23 is pulled out, so it is represented by a dotted line.

[0034] Embodiment 1: Refer to Figures 1-10 , a recording device for the operation of a power plant unit, including: two probes 14 respectively slidably arranged on the back surface of the housing 13 of the power recorder 1. The probe 14 includes a shank 141 and a tapered head 142 rotatably connected to the front end of the shank 141 through a torsion spring. A metal needle 143 is arranged on the tapered head 142. The probe 14 is electrically connected to the power recorder 1 through a wire; a protective kit symmetrically arranged on the side surface of the housing 13, and the protective kit is perpendicular to the housing 13; a rubber roll 23 is drawn and arranged on the bottom surface of the housing 13. A piece of paper is arranged on the rubber roll 23. Pull the rubber roll 23 to extend towards one side of the housing 13 and connect it to the end of the probe 14. When pulling the rubber roll 23, drive the front ends of the two probes 14 to approach the protective kit and make the tapered head 142 bend upwards into the protective kit;

[0035] On the bottom surface of the outer shell 13, two groups of buckles 15 are symmetrically and fixedly connected. The number of each group of buckles 15 is not less than two. The buckle 15 includes a base and an arc-shaped clamp integrally formed with the base. The handle body 141 of the probe 14 is clamped in the arc-shaped clamp;

[0036] On both sides of the outer shell 13 located in the protective kit, arc-shaped guide plates 16 are fixedly connected through fixing rods 161. A gap is formed between the two arc-shaped guide plates 16, and the arc-shaped guide plates 16 correspond to the conical head 142;

[0037] On the bottom surface of the outer shell 13, an installation cylinder 2 is fixedly connected. A connecting shaft 21 is rotatably connected in the installation cylinder 2. Both ends of the connecting shaft 21 are respectively connected to the installation cylinder 2 through spiral springs 22 to store energy for the reverse rotation of the connecting shaft 21 when pulling the rubber reel 23; One end of the rubber reel 23 is connected to the connecting shaft 21. A slit 20 is opened on the installation cylinder 2, and the rubber reel 23 passes through the slit 20 and extends outside the installation cylinder 2; A pull rod 24 is fixedly connected to the end of the rubber reel 23 away from the connecting shaft 21, and a limit buckle 144 is fixedly connected to one end of the handle body 141. The pull rod 24 corresponds to the limit buckle 144;

[0038] On the outer circumferences of both ends of the installation cylinder 2, a collar 30 and a threaded seat 35 are respectively fixedly connected. A multi-faceted sleeve 3 is rotatably and slidably connected in the collar 30. A multi-faceted block 33 is slidably connected in the multi-faceted sleeve 3. A connecting rod 31 is fixedly connected to the multi-faceted block 33. An external thread 32 is opened at one end of the connecting rod 31. The connecting rod 31 is threadedly connected to the threaded seat 35 through the external thread 32. Both ends of the connecting shaft 21 extend outside the installation cylinder 2, and first gears 25 are fixedly connected to both ends of the connecting shaft 21. A second gear 39 is fixedly connected to the outer circumference of the multi-faceted sleeve 3. The first gear 25 and the second gear 39 are meshed with each other. One end of the connecting rod 31 is connected with a rubber wheel 34 through a ratchet 340. The rubber wheel 34 is located between the probe 14 and the outer shell 13, and the rubber wheel 34 corresponds to the handle body 141 of the probe 14;

[0039] On the side surface of the outer shell 13 away from the protective kit, guide frames 151 are symmetrically and fixedly connected. Guide grooves 152 are opened on the guide frames 151. A limit block 153 is fixedly connected to the handle body 141 of the probe 14. The limit block 153 slides in the guide groove 152;

[0040] When this device is in use, after the power recorder 1 finishes the measurement and the probe 14 is stored, when the rubber roll 23 is pulled out for numerical recording, the rubber wheel 34 rotates and extends, automatically driving the probe 14 to displace on the outer shell 13 of the power recorder 1. During the displacement process, the conical head 142 and the metal needle 143 at the front end of the probe 14 are automatically bent to approximately 90 degrees, causing the metal needle 143 to enter the protective kit. The protective kit protects the metal needle 143 on the probe 14 to prevent the metal needle 143 from being worn. After the rubber roll 23 is pulled out, it is very convenient for the user to record the measurement results on the paper of the rubber roll 23, thereby enabling the measurement, numerical writing, and recording to be easily achieved even when a single person is performing the measurement operation;

[0041] Specifically, during use, two probes 14 are removed from the outer shell 13, and the device to be measured is measured using the probes 14. The measurement results are displayed on the display screen 11 of the power recorder 1. The buttons 12 on the power recorder 1 can achieve different function conversions and operations;

[0042] After the measurement is completed, the end of the metal needle 143 of the probe 14 is oriented towards the protective kit on the outer shell 13, and the probe 14 is placed horizontally on the power recorder 1. The handle body 141 of the probe 14 is snapped into the buckle 15. The buckle 15 has a small opening and an inner diameter larger than the diameter of the handle body 141. This allows the probe 14 to have a certain amount of movement space after being snapped into the buckle 15, but this movement space does not cause the probe 14 to move around in the buckle 15. Subsequently, the limit block 153 on the handle body 141 is aligned with the guide groove 152 on the guide frame 151, causing the symmetric protrusions on the limit block 153 to enter the guide groove 152. This prevents the probe 14 from rotating in the buckle 15 and ensures that the bending direction of the conical head 142 does not change;

[0043] Subsequently, by pinching the pull rod 24 and pulling the rubber roll member 23, since the rubber roll member 23 is wound around the connecting shaft 21, when pulling, the connecting shaft 21 will rotate, driving the spiral spring 22 to deform and store energy. During the rotation of the connecting shaft 21, the connecting shaft 21 drives the second gear 39 through the meshing of the first gear 25, causing the multi-faceted sleeve 3 to rotate on the collar 30. Since the connecting rod 31 is arranged in the multi-faceted sleeve 3 through the multi-faceted block 33 (it should be noted that the inner diameter of the multi-faceted sleeve 3 is multi-faceted), when the connecting rod 31 rotates, it meshes and rotates with the threaded seat 35, causing the rubber wheel 34 at one end of the connecting rod 31 to move towards the probe 14 and rotate during the movement. When the rubber wheel 34 contacts the surface of the shank 141 of the probe 14, due to the influence of friction, the probe 14 is pushed to move. During the movement, the conical head 142 at the front end of the probe 14 bends upward relying on the guidance of the arc-shaped guide plate 16 and enters the protective kit. Therefore, while pulling out the rubber roll member 23 for measuring value writing and recording, it is linked to make the probe 14 move and change the direction of the metal needle 143, thereby avoiding the wear and injury of the metal needle 143 and facilitating the recording of single-person measurement values during single-person operation;

[0044] It should be noted that an anti-slip sticker is attached to the outer circumference of the shank 141, and annular protrusions are provided on the surface of the protective sticker, and grooves are formed between the adjacent annular protrusions. Annular protrusions are circumferentially provided on the outer circumference of the rubber wheel 34, and grooves are also formed between the adjacent annular protrusions. This enables the rubber wheel 34 to mesh with the shank 141 when the rubber wheel 34 contacts the surface of the shank 141, allowing the rubber wheel 34 to push the probe 14 to move when rotating;

[0045] Pull the rubber roll member 23 until the pull rod 24 is at the limit buckle 144 at one end of the probe 14, place the pull rod 24 in the limit buckle 144 to fix the rubber roll member 23 and prevent the rubber roll member 23 from retracting into the installation cylinder 2;

[0046] When the recording is completed, remove the pull rod 24 from the limit buckle 144. Under the action of the spiral spring 22, the rubber roll member 23 retracts into the installation cylinder 2, causing the connecting shaft 21 to reverse. This also causes the connecting rod 31 to pull the rubber wheel 34 back to its original position. When the rubber wheel 34 returns to its original position, due to the setting of the ratchet 340, it will not rotate when contacting the shank 141. Therefore, when the rubber wheel 34 passes over the shank 141, it will not drive the probe 14 to move in the reverse direction;

[0047] Since the conical head 142 is rotationally connected to the handle body 141 by a torsion spring, when the probe 14 is removed, the conical head 142 will be horizontal with the handle body 141 under the reset of the torsion spring, thus not affecting normal use. And since the conical head 142 can rotate on the handle body 141, when measuring some special positions, the metal needle 143 can also rotate adaptively.

[0048] Example 2: Refer to Figure 1 、 Figure 4 、 Figure 6 A recording device for power plant unit operation is basically the same as that in Example 1. Further, the protection kit includes a first protection sleeve 162. The top of the first protection sleeve 162 is closed, and the side of the first protection sleeve 162 away from the housing 13 is open. The length of the open part is two-thirds of the length of the first protection sleeve 162.

[0049] When the conical head 142 at one end of the probe 14 is bent, it will enter the first protection sleeve 162 through the open part. Since the top of the first protection sleeve 162 is closed, it can well protect the metal needle 143 and avoid the metal needle 143 from being worn and hurting people.

[0050] It also includes a sleeve 37 fixedly connected to the outer periphery of the mounting cylinder 2. A piston block 36 is slidably connected in the sleeve 37. The piston block 36 is fixedly connected to the end of the connecting rod 31. A connecting pipe 38 is fixedly communicated with the sleeve 37. The connecting pipe 38 leads to the first protection sleeve 162 to blow air on the metal needle 143 in the first protection sleeve 162 when the piston block 36 slides in the sleeve 37.

[0051] When the rubber roll 23 is pulled out and the connecting rod 31 moves in the direction away from the mounting cylinder 2, the piston block 36 will be pulled to move in the sleeve 37. This makes when the piston block 36 moves, air enters the sleeve 37 through the connecting pipe 38. Then when the rubber roll 23 retracts, the gas in the sleeve 37 is squeezed by the piston block 36 and blown to the metal needle 143 located in the first protection sleeve 162 through the connecting pipe 38, realizing the cleaning of the surface of the metal needle 143, avoiding stains on the surface of the metal needle 143 from affecting subsequent measurement use, and at the same time being able to appropriately dry the liquid remaining on the metal needle 143 (such as hand sweat, moisture in humid air), slowing down the oxidation speed of the metal needle 143.

[0052] Example 3: Refer to Figure 9 A recording device for power plant unit operation is basically the same as that in Example 1. Further, the protection kit includes a second protection sleeve 17 and a connecting sleeve 171. The connecting sleeve 171 is fixedly connected to the housing 13. The second protection sleeve 17 is slidably connected to the connecting sleeve 171. The second protection sleeve 17 and the connecting sleeve 171 are in interference fit. The connecting sleeve 171 is open at one end and closed at the other end.

[0053] When the conical head 142 is bent to be approximately perpendicular to the handle body 141 at an angle of 90 degrees, by pushing down the second protective sleeve 17, the second protective sleeve 17 is sleeved on the conical head 142 to protect the metal needle 143, thereby effectively preventing the metal needle 143 from hurting people, reducing the contact between the metal needle 143 and the outside world, effectively avoiding problems such as wear and oxidation of the metal needle 143, and effectively improving the protection of the metal needle 143.

[0054] It further includes a sleeve 37 fixedly connected to the outer periphery of the mounting cylinder 2. A piston block 36 is slidably connected in the sleeve 37. The piston block 36 is fixedly connected to the end of the connecting rod 31. The sleeve 37 is fixedly communicated with an air suction pipe 4 and an exhaust pipe 41 respectively. One-way valves are provided in both the air suction pipe 4 and the exhaust pipe 41. The air suction pipe 4 leads to the second protective sleeve 17 to suck the gas in the second protective sleeve 17 when the piston block 36 slides in the sleeve 37.

[0055] When pulling the rubber roll member 23, when the connecting rod 31 moves in the direction away from the mounting cylinder 2 and the piston block 36 slides in the sleeve 37, the gas in the second protective sleeve 17 is sucked through the air suction pipe 4 to reduce the oxidation of the metal needle 143 by the gas in the second protective sleeve 17. When the connecting rod 31 is reset, the gas in the sleeve 37 is discharged through the exhaust pipe 41.

[0056] Example 4: Refer to Figure 1 、 Figure 2 A recording device for the operation of a power plant unit, which is basically the same as that in Example 2. Further, a universal rod 163 is movably connected to the top end of the first protective sleeve 162, and a light-shielding plate 164 is fixedly connected to the universal rod 163. By arranging the light-shielding plate 164 in front of the display screen 11, light shielding can be performed, making it clearer when viewing the display screen 11.

[0057] After the power recorder 1 finishes measurement in the present invention, after the probe 14 is stored and the rubber roll member 23 is pulled out for numerical recording, the rubber wheel 34 rotates and extends to automatically drive the probe 14 to displace on the outer shell 13 of the power recorder 1. During the displacement process, the conical head 142 and the metal needle 143 at the front end of the probe 14 are automatically bent to be approximately 90 degrees, so that the metal needle 143 enters the protective kit. The protective kit protects the metal needle 143 on the probe 14 to avoid wear of the metal needle 143. After the rubber roll member 23 is pulled out, it is very convenient for the user to record the measurement results on the paper of the rubber roll member 23. Thus, when a person performs the measurement operation, it is also possible to easily perform measurement and numerical writing and recording.

[0058] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A recording device for power plant unit operation, characterized in that: include: Two probes (14) are respectively slidably arranged on the back of the housing (13) of the power recorder (1), the probes (14) comprising a handle (141) and a conical head (142) rotatably connected to the front end of the handle (141) via a torsion spring, and a metal needle (143) is arranged on the conical head (142); A protective kit is symmetrically arranged on the side of the housing (13), and the protective kit is arranged vertically to the housing (13); A rubber roll (23) is drawn and arranged on the bottom surface of the housing (13), and paper is arranged on the rubber roll (23). The rubber roll (23) is pulled to extend toward one side of the housing (13) and connected to the ends of the probes (14). When the rubber roll (23) is pulled, the front ends of the two probes (14) are driven to approach the protective kit, and the conical heads (142) are bent upward and enter the protective kit.

2. A recording device for power plant unit operation according to claim 1, characterized in that: Two groups of buckles (15) are symmetrically fixedly connected to the bottom surface of the shell (13), and the number of buckles (15) in each group is not less than two. The buckles (15) include a base and an arc-shaped clamp integrally formed with the base, and the handle (141) of the probe (14) is clamped in the arc-shaped clamp.

3. A recording device for power plant unit operation according to claim 2, characterized in that: The protective kit comprises a protective sleeve 1 (162), the top end of the protective sleeve 1 (162) is closed, and the side of the protective sleeve 1 (162) away from the housing (13) is open, and the length of the open side is two-thirds of the length of the protective sleeve 1 (162).

4. A recording device for power plant unit operation according to claim 2, characterized in that: The protective set comprises a second protective sleeve (17) and a connecting sleeve (171); the connecting sleeve (171) is fixedly connected to the outer shell (13); the second protective sleeve (17) is slidably connected to the connecting sleeve (171); and the connecting sleeve (171) is open at one end and closed at the other end.

5. A recording device for power plant unit operation according to claim 3 or 4, characterized in that: The shell (13) is located on both sides of the protective kit and is fixedly connected to arc-shaped guide plates (16) via fixing rods (161), a gap is formed between the two arc-shaped guide plates (16), and the arc-shaped guide plates (16) correspond to the conical heads (142).

6. A recording device for power plant unit operation according to claim 5, characterized in that: A mounting cylinder (2) is fixedly connected to the bottom surface of the housing (13), a connecting shaft (21) is rotatably connected to the mounting cylinder (2), and both ends of the connecting shaft (21) are respectively connected to the mounting cylinder (2) via vortex springs (22) so as to store force for reverse rotation of the connecting shaft (21) when the rubber roll (23) is pulled; One end of the rubber roll (23) is connected to the connecting shaft (21), a slit (20) is provided on the installation tube (2), and the rubber roll (23) passes through the slit (20) and out of the installation tube (2); A pull rod (24) is fixedly connected to one end of the rubber roll (23) away from the connecting shaft (21), and a limit buckle (144) is fixedly connected to one end of the handle body (141), and the pull rod (24) corresponds to the limit buckle (144).

7. A recording device for power plant unit operation according to claim 6, characterized in that: The outer circumferences of both ends of the installation tube (2) are respectively fixedly connected with a collar (30) and a threaded seat (35); a multi-faceted sleeve (3) is rotatably and slidably connected in the collar (30); a multi-faceted block (33) is slidably connected in the multi-faceted sleeve (3); a connecting rod (31) is fixedly connected to the multi-faceted block (33); one end of the connecting rod (31) is provided with an external thread (32); the connecting rod (31) is threadedly connected to the threaded seat (35) via the external thread (32); and both ends of the connecting shaft (21) extend The connecting rod (31) is connected to the outside of the mounting tube (2), and both ends of the connecting shaft (21) are fixedly connected to a first gear (25), the outer periphery of the multi-faceted sleeve (3) is fixedly connected to a second gear (39), the first gear (25) and the second gear (39) are meshed with each other, one end of the connecting rod (31) is connected to a rubber wheel (34) through a ratchet (340), the rubber wheel (34) is located between the probe (14) and the housing (13), and the rubber wheel (34) corresponds to the handle (141) of the probe (14).

8. A recording device for power plant unit operation according to claim 3, characterized in that: The invention also comprises a sleeve (37), wherein a piston block (36) is slidably connected in the sleeve (37), and a connecting pipe (38) is fixedly connected to the sleeve (37), wherein the connecting pipe (38) leads to the protective sleeve (162) and is used for blowing air to the metal needle (143) in the protective sleeve (162) when the piston block (36) slides in the sleeve (37).

9. A recording device for power plant unit operation according to claim 4, characterized in that: The invention also comprises a sleeve (37), wherein a piston block (36) is slidably connected in the sleeve (37), and an air intake pipe (4) and an air exhaust pipe (41) are respectively fixedly connected to the sleeve (37), wherein both the air intake pipe (4) and the air exhaust pipe (41) are provided with a one-way valve, and the air intake pipe (4) leads to the second protective sleeve (17) for sucking gas in the second protective sleeve (17) when the piston block (36) slides in the sleeve (37).

10. A recording device for power plant unit operation according to claim 8 or 9, characterized in that: A guide frame (151) is symmetrically fixedly connected to the side of the housing (13) away from the protective kit, and a guide groove (152) is provided on the guide frame (151). A limit block (153) is fixedly connected to the handle (141) of the probe (14), and the limit block (153) slides in the guide groove (152).

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