CN114705358B - Auxiliary verification device - Google Patents

Auxiliary verification device Download PDF

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Publication number
CN114705358B
CN114705358B CN202210199084.0A CN202210199084A CN114705358B CN 114705358 B CN114705358 B CN 114705358B CN 202210199084 A CN202210199084 A CN 202210199084A CN 114705358 B CN114705358 B CN 114705358B
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shell
valve
groove
hole
spring
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CN202210199084.0A
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CN114705358A (en
Inventor
程威
孙静
王楠
周鸿肖
胡丹丹
李嘉嘉
万晓丽
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Guizhou Power Grid Co Ltd
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Guizhou Power Grid Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L27/00Testing or calibrating of apparatus for measuring fluid pressure
    • G01L27/002Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
    • G01L27/005Apparatus for calibrating pressure sensors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/007Leak detector calibration, standard leaks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Valve Housings (AREA)

Abstract

The application discloses an auxiliary verification device which comprises a valve assembly, wherein the valve assembly comprises a conversion valve and an adapter, the conversion valve is connected with a density relay, and the adapter is connected with the conversion valve; and the shell component is matched with the density relay. The installation is convenient, and it is simple to dismantle, provides warning and alarming function when experimental, prevents to miss the operation.

Description

Auxiliary verification device
Technical Field
The application relates to the technical field of density relay testing, in particular to an auxiliary checking device.
Background
In the power transmission process, sulfur hexafluoride gas with certain pressure is filled in the gas insulation closed combined electrical appliance to serve as an insulation and arc extinguishing medium to isolate the high-voltage electrical appliance from the outside, so that the high-voltage electrical appliance is protected, the density relay is used for monitoring the pressure, density value and leakage condition of the sulfur hexafluoride gas in the equipment, and timely sending out an alarm or locking signal to inform operators to check defects and faults, so that the gas insulation closed combined electrical appliance is an important component of GIS equipment.
According to the rule requirements, the SF6 gas density relay needs to be periodically checked, a tester needs to manually close a gas valve communicated with the main equipment by the density relay during checking, a meter checking air inlet is opened, and after the checking work is finished, the density relay displays normal pressure because SF6 gas used for checking remains in the density relay.
Because no reminding measures are adopted, the testers often misunderstand that the gas valve communicated with the main equipment is opened, and the opening operation of the gas valve is leaked, so that the density relay of the transformer substation is not communicated with the main equipment, the density relay senses the environment change and gives out false alarm, and potential safety hazards are brought to the operation of the gas-insulated main equipment of the transformer substation.
Disclosure of Invention
This section is intended to summarize some aspects of embodiments of the application and to briefly introduce some preferred embodiments, which may be simplified or omitted in this section, as well as the description abstract and the title of the application, to avoid obscuring the objects of this section, description abstract and the title of the application, which is not intended to limit the scope of this application.
The present application has been made in view of the above and/or problems occurring in the prior art.
Therefore, the technical problem to be solved by the application is that without reminding measures, a tester often misjudges that the gas valve communicated with the main equipment is opened, and the opening operation of the gas valve is missed, so that the density relay of the transformer substation is not communicated with the main equipment.
In order to solve the technical problems, the application provides the following technical scheme: an auxiliary verification device comprises a valve assembly, wherein the valve assembly comprises a conversion valve and an adapter, the conversion valve is connected with a density relay, and the adapter is connected with the conversion valve; and the shell component is matched with the density relay.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the switching valve comprises a handle and valve port square grooves, wherein the handle is arranged at the upper end of the switching valve, the valve port square grooves are arranged on the side face of the switching valve, and a plurality of valve port square grooves are formed.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the adapter comprises a round hole and square blocks, the round hole is penetrated and arranged on the side face of the adapter, the square blocks are arranged on the adapter, the square blocks are arranged in a plurality of blocks, and the square blocks are in sliding fit with the square grooves of the valve ports.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the switching valve is characterized in that connecting holes are formed in the circumferential surface of one end of the switching valve, a plurality of connecting holes are formed in the connecting holes, and square connecting holes are formed in the square block.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the valve assembly further comprises a connecting rod, a round connecting column is arranged on the connecting rod, and the round connecting column penetrates through the connecting hole and is arranged in the square connecting hole.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the shell assembly comprises a shell, a pressing plate and a limiting column, wherein the pressing plate is rotationally connected with the shell, a limiting groove is formed in the shell, and the limiting column is arranged in the limiting groove;
and the auxiliary assembly is connected with the shell.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the shell also comprises a rotating block, a fixing groove and a fixing plate, wherein the rotating block and the fixing groove are arranged on the side face of the shell, and the fixing plate is arranged in the fixing groove;
the shell further comprises a valve hole, a clamping groove and a pushing hole, wherein the valve hole is formed in the side face of the shell, the clamping groove is formed in the shell, the pushing hole is formed in the side face of the shell and communicated with the clamping groove, and the valve hole is communicated with the clamping groove.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the fixed plate comprises a pulling cylinder, an inclined plane and a spring, wherein the pulling cylinder and the spring are arranged on the side face of the fixed plate, the inclined plane is arranged on the other side face of the fixed plate, and the spring is connected with the fixed groove.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the lower end of the pressing plate is provided with a pressing column, the pressing plate is rotationally connected with the rotating block, the upper end of the limiting column is provided with a limiting lower pressing plate, the limiting lower pressing plate is provided with a pressing spring, and the pressing spring is connected with the limiting groove.
As a preferable embodiment of the auxiliary verification device of the present application, wherein: the auxiliary assembly comprises a pushing piece and a first clamping piece, wherein the pushing piece is arranged in the clamping groove, the first clamping piece is in sliding fit with the pushing piece, and a plurality of pushing pieces and a plurality of first clamping pieces are arranged.
The application has the beneficial effects that: the installation is convenient, and it is simple to dismantle, provides warning and alarming function when experimental, prevents to miss the operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of an assembly structure of an auxiliary verification device according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a connection structure of components in an auxiliary verification device according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a cross-sectional structure of a housing in an auxiliary calibration device according to an embodiment of the present application;
FIG. 4 is a schematic cross-sectional connection structure of a housing component and an auxiliary component in an auxiliary verification device according to an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a fixing plate in an auxiliary calibration device according to an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a limiting post in an auxiliary calibration device according to an embodiment of the present application;
fig. 7 is a schematic cross-sectional connection structure of an auxiliary component in an auxiliary verification device according to an embodiment of the application.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
In the following detailed description of the embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the application is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, the present embodiment provides an auxiliary verification device including a valve assembly 300.
The valve assembly 300 comprises a switching valve 301 and an adapter 302, wherein the switching valve 301 is connected with the density relay 400, and the adapter 302 is connected with the switching valve 301; housing assembly 100, housing assembly 100 mates with density relay 400.
The switching valve 301 includes a handle 301a and a valve port square groove 301b, the handle 301a is disposed at the upper end of the switching valve 301, the valve port square groove 301b is disposed at the side surface of the switching valve 301, and the valve port square groove 301b is provided with a plurality of valve ports.
The adapter 302 includes round hole 302a and square piece 302b, and round hole 302a runs through and sets up in adapter 302 side, and square piece 302b sets up on adapter 302, and square piece 302b is provided with a plurality of, square piece 302b and valve port square groove 301b sliding fit.
The switching valve 301 has a plurality of connection holes 301c provided on a circumferential surface of one end, and a square block 302b has a square connection hole 302b-1 provided thereon.
The valve assembly 300 further includes a connecting rod 303, a circular connecting post 303a is provided on the connecting rod 303, and the circular connecting post 303a is placed in the square connecting hole 302b-1 through the connecting hole 301 c.
Preferably, the square connecting hole 302b-1 is internally provided with threads, the circular connecting post 303a is provided with threads, and the circular connecting post 303a is in threaded fit with the square connecting hole 302b-1.
The switching valve 301 is connected to the gas inlet of the density relay, one end of the switching valve 301 is connected to the switching connector 302, and the other end is fixed by the connecting rod 303, and the other end is connected to the gas cylinder for detection.
The gas valve on the rotary density relay is closed to connect with the main device, pushing the handle 301a to check.
Example 2
Referring to fig. 2 to 6, in a second embodiment of the present application, based on the previous embodiment, an implementation manner of an auxiliary verification device is provided in this embodiment.
The shell assembly 100 comprises a shell 101, a pressing plate 102 and a limiting column 103, wherein the pressing plate 102 is rotationally connected with the shell 101, a limiting groove 101a is formed in the shell 101, the limiting column 103 is arranged in the limiting groove 101a, and the limiting column 103 and the limiting groove 101a are provided with two.
And an auxiliary assembly 200, the auxiliary assembly 200 being connected to the housing 101.
The housing 101 further includes a rotating block 101b, a fixing groove 101c, and a fixing plate 101d, the rotating block 101b and the fixing groove 101c being provided with the side of the housing 101, the fixing plate 101d being disposed in the fixing groove 101 c.
The rotating block 101b is provided with a circular hole, the rotating block 101b is symmetrically provided with two along the center line of the shell 101, and the fixing groove 101c and the fixing plate 101d are provided with a plurality of fixing grooves.
The housing 101 further includes a valve hole 101e, an engagement groove 101f, and a push hole 101g, the valve hole 101e is disposed on a side surface of the housing 101, the engagement groove 101f is disposed inside the housing 101, the push hole 101g is disposed on the side surface of the housing 101 and is communicated with the engagement groove 101f, and the valve hole 101e is communicated with the engagement groove 101 f.
The pushing holes 101g are symmetrically provided with two along the center line of the housing 101.
The fixed plate 101d comprises a pulling cylinder 101d-1, an inclined plane 101d-2 and a spring 101d-3, wherein the pulling cylinder 101d-1 and the spring 101d-3 are arranged on the side surface of the fixed plate 101d, the inclined plane 101d-2 is arranged on the other side surface of the fixed plate 101d, the spring 101d-3 is fixedly connected with the inside of the fixed groove 101c, and a round corner is arranged on the pulling cylinder 101 d-1.
The lower extreme of pressing plate 102 is provided with presses post 102a, is provided with the fillet on pressing post 102a, presses pressing plate 102 one end and is provided with the round bar, presses plate 102 and rotates piece 101b and rotate to be connected, and spacing post 103 upper end is provided with spacing holding down plate 103a, is provided with down spring 103a-1 on the spacing holding down plate 103a, pushes down spring 103a-1 and the inside fixed connection of spacing groove 101 a.
When the device is not in use, the limit post 103 is completely located inside the limit groove 101 a.
When the device is used, the shell 101 is clamped with the density relay, a gas valve on the density relay is arranged in the valve hole 101e, the pressing plate 102 is rotated to enable the pressing column 102a to be in contact with the limiting lower pressing plate 103a, the pressing plate 102 is continuously rotated to enable the pressing column 102a to press the limiting lower pressing plate 103a, and the limiting column 103 is enabled to move downwards; when the pressing plate 102 rotates to a certain position, one end of the pressing plate 102 contacts with the inclined surface 101d-2 and presses the inclined surface 101d-2, the fixing plate 101d moves in the fixing groove 101c, and when the pressing plate 102 is located below the fixing plate 101d and limited, the limiting column 103 contacts with the density relay to fix the whole device.
The device is simple and convenient to fix, is firmly fixed and is prevented from being separated, and only the pulling cylinder 101d-1 is required to be moved to release the limit of the pressing plate 102 during disassembly.
Example 3
Referring to fig. 1 to 7, in a third embodiment of the present application, based on the above two embodiments, an implementation manner of an auxiliary verification device is provided in this embodiment.
The auxiliary assembly 200 comprises a pushing piece 201 and a first clamping piece 202, the pushing piece 201 is arranged in the clamping groove 101f, the first clamping piece 202 is in sliding fit with the pushing piece 201, and the pushing piece 201 and the first clamping piece 202 are provided with two.
The pushing piece 201 comprises a pushing column 201a and a sliding groove 201b, the pushing column 201a is arranged on the circumferential side face of the pushing piece 201, the sliding groove 201b is arranged on the inner circumferential face of the pushing piece 201, the pushing column 201a is inserted into the pushing hole 101g, a spring is arranged on the pushing column 201a, and the spring is fixedly connected with the inside of the clamping groove 101 f.
The first engaging member 202 includes a first rotating column 202a and a triangular projection 202b, the first rotating column 202a is disposed on the circumferential surface of the first engaging member 202, the triangular projection 202b is disposed on the circumferential surface of the first engaging member 202, the first rotating column 202a is disposed in the sliding groove 201b, and the first rotating column 202a and the triangular projection 202b are disposed in plurality.
The upper end of the first rotating column 202a is provided with a square arc block which is attached to the inner wall of the sliding groove 201 b.
The housing 101 is further provided with a moving slot 101h, the moving slot 101h is communicated with the engaging slot 101f, and the auxiliary assembly 200 further comprises a display rectangular block 203, and the display rectangular block 203 is in sliding fit with the moving slot 101 h.
The display rectangular block 203 comprises a display rectangular block 203a, an indicator light 203b, a button 203c, a circular hole 203d and a spring block 203e, wherein the display rectangular block 203a and the button 203c are arranged at the lower end of the display rectangular block 203, the indicator light 203b is arranged on the side surface of the display rectangular block 203, a spring is arranged on the other side surface of the display rectangular block 203, the circular hole 203d is arranged at the upper end of the display rectangular block 203, and the spring block 203e is arranged in the circular hole 203d and fixedly connected with the inside of the circular hole 203 d.
The spring block 203e is provided with rounded corners, showing that the springs on the rectangular block 203 are fixedly connected with the inside of the movable groove 101 h.
The frictional resistance between the first rotating post 202a and the sliding groove 201b is high, so that the connection position of the pushing member 201 and the first engaging member 202 is not easy to change and move.
When SF6 gas density relay verification is carried out, the shell 101 is clamped with the density relay, a gas valve on the density relay is arranged in the valve hole 101e, the pressing plate 102 is rotated to enable the pressing post 102a to be in contact with the limiting lower pressing plate 103a, the pressing plate 102 is continuously rotated to enable the pressing post 102a to press the limiting lower pressing plate 103a, and the limiting post 103 is moved downwards; when the pressing plate 102 rotates to a certain position, one end of the pressing plate 102 contacts the inclined surface 101d-2 and the pushing post 201a, presses the inclined surface 101d-2 and the pushing post 201a, moves the fixing plate 101d in the fixing groove 101c, and moves the pushing member 201 in the engaging groove 101 f.
When the pressing plate 102 is located below the fixing plate 101d and is limited, the whole device contacting the limiting column 103 and the density relay is fixed, and the two first clamping pieces 202 are tightly clamped with the gas valve.
The first clamping piece 202 matched with the rotary gas valve by a worker rotates along with the valve to synchronously rotate, and the first rotary column 202a contacts with the display square block 203a in the rotating process to push the display square block 203 to move; after the display rectangular block 203 moves outwards in the moving groove 101h to a certain distance, the spring block 203e pops out from the circular hole 203d to stop the display rectangular block 203 from returning to the original state under the action of the side spring, and in the process, the button 203c positioned below the display rectangular block 203 contacts with the lower end of the moving groove 101h and is in a closed state, and the indicator lamp 203b flashes in red light to remind.
After the density relay is verified, the gas valve is restored, the pulling cylinder 101d-1 is moved to release the limit of the pressing plate 102, the spring block 203e is pressed to enable the indication lamp 203b for restoring the display rectangular block 203 to the original position to be extinguished, the pushing piece 201 is restored to the original position under the action of the spring on the pushing post 201a, the first clamping piece 202 is not clamped with the gas valve, the limiting post 103 is restored to be completely located in the limiting groove 101a under the action of the pressing spring 103a-1, and the device can be removed.
Therefore, the problem that workers forget to recover the gas valve after the calibration test is completed is avoided, the false alarm of the density relay sensing environment change is avoided, and potential safety hazards are brought to the operation of gas-insulated main equipment of the transformer substation.
It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the application, or those not associated with practicing the application).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.

Claims (5)

1. An auxiliary verification device, characterized in that: comprising the steps of (a) a step of,
a valve assembly (300) comprising a switching valve (301) and an adapter (302), the switching valve (301) being connected to a density relay (400), the adapter (302) being connected to the switching valve (301);
-a housing assembly (100), the housing assembly (100) cooperating with the density relay (400);
the shell assembly (100) comprises a shell (101), a pressing plate (102) and a limiting column (103), wherein the pressing plate (102) is rotationally connected with the shell (101), a limiting groove (101 a) is formed in the shell (101), and the limiting column (103) is arranged in the limiting groove (101 a);
-an auxiliary assembly (200), the auxiliary assembly (200) being connected to the housing (101);
the shell (101) further comprises a rotating block (101 b), a fixing groove (101 c) and a fixing plate (101 d), wherein the rotating block (101 b) and the fixing groove (101 c) are arranged on the side face of the shell (101), and the fixing plate (101 d) is arranged in the fixing groove (101 c);
the shell (101) further comprises a valve hole (101 e), a clamping groove (101 f) and a pushing hole (101 g), wherein the valve hole (101 e) is formed in the side face of the shell (101), the clamping groove (101 f) is formed in the shell (101), the pushing hole (101 g) is formed in the side face of the shell (101) and is communicated with the clamping groove (101 f), and the valve hole (101 e) is communicated with the clamping groove (101 f);
the fixing plate (101 d) comprises a pulling cylinder (101 d-1), an inclined plane (101 d-2) and a spring (101 d-3), wherein the pulling cylinder (101 d-1) and the spring (101 d-3) are arranged on the side surface of the fixing plate (101 d), the inclined plane (101 d-2) is arranged on the other side surface of the fixing plate (101 d), and the spring (101 d-3) is connected with the fixing groove (101 c);
the lower end of the pressing plate (102) is provided with a pressing column (102 a), the pressing plate (102) is rotationally connected with the rotating block (101 b), the upper end of the limiting column (103) is provided with a limiting lower pressing plate (103 a), the limiting lower pressing plate (103 a) is provided with a pressing spring (103 a-1), and the pressing spring (103 a-1) is connected with the limiting groove (101 a);
the auxiliary assembly (200) comprises a pushing piece (201) and a first clamping piece (202), wherein the pushing piece (201) is arranged in the clamping groove (101 f), the first clamping piece (202) is in sliding fit with the pushing piece (201), and a plurality of pushing pieces (201) and a plurality of first clamping pieces (202) are arranged;
the shell (101) is further provided with a moving groove (101 h), the moving groove (101 h) is communicated with the clamping groove (101 f), the auxiliary assembly (200) further comprises a display rectangular block (203), and the display rectangular block (203) is in sliding fit with the moving groove (101 h);
the display rectangular block (203) comprises a display rectangular block (203 a), an indicator lamp (203 b), a button (203 c), a round hole (203 d) and a spring block (203 e), wherein the display rectangular block (203 a) and the button (203 c) are arranged at the lower end of the display rectangular block (203), the indicator lamp (203 b) is arranged on the side face of the display rectangular block (203), a spring is arranged on the other side face of the display rectangular block (203), the round hole (203 d) is arranged at the upper end of the display rectangular block (203), and the spring block (203 e) is arranged in the round hole (203 d).
2. The auxiliary verification device of claim 1, wherein: the switching valve (301) comprises a handle (301 a) and valve port square grooves (301 b), wherein the handle (301 a) is arranged at the upper end of the switching valve (301), the valve port square grooves (301 b) are formed in the side face of the switching valve (301), and a plurality of valve port square grooves (301 b) are formed.
3. The auxiliary verification device of claim 2, wherein: the adapter (302) comprises a round hole (302 a) and square blocks (302 b), the round hole (302 a) penetrates through the side face of the adapter (302), the square blocks (302 b) are arranged on the adapter (302), the square blocks (302 b) are arranged in a plurality of blocks, and the square blocks (302 b) are in sliding fit with the valve port square grooves (301 b).
4. An auxiliary verification device as claimed in claim 3, wherein: the switching valve (301) is characterized in that a connecting hole (301 c) is formed in the circumferential surface of one end of the switching valve (301), a plurality of connecting holes (301 c) are formed, and square connecting holes (302 b-1) are formed in the square block (302 b).
5. The auxiliary verification device of claim 4, wherein: the valve assembly (300) further comprises a connecting rod (303), a circular connecting column (303 a) is arranged on the connecting rod (303), and the circular connecting column (303 a) penetrates through the connecting hole (301 c) to be arranged in the square connecting hole (302 b-1).
CN202210199084.0A 2022-03-02 2022-03-02 Auxiliary verification device Active CN114705358B (en)

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