CN213180645U

CN213180645U - Density relay calibration device and system

Info

Publication number: CN213180645U
Application number: CN202022346007.2U
Authority: CN
Inventors: 李晓飞
Original assignee: Guoneng Daduhe Maintenance And Installation Co ltd
Current assignee: Guoneng Daduhe Maintenance And Installation Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-05-11
Anticipated expiration: 2030-10-20

Abstract

The utility model provides a density relay is with calibration equipment, including calibration portion and the calibration piece that is located calibration portion, wherein, calibration piece includes the trachea that is located calibration portion, the isolation valve of fixing on the trachea and the check valve that communicates in the trachea, and the isolation valve separates the trachea and is anterior segment and back end, and one end of check valve is the link that communicates in the anterior segment, and the other end of check valve is the calibration end that extends to the external world for passing calibration portion; a calibration system for a density relay comprises a calibration device, and a first device and a second device which are respectively arranged at two ends of the calibration device. The utility model discloses a calibration equipment and system pass through mutually supporting of calibration portion and check-up piece, have avoided the dismantlement of density relay, have reduced the on-the-spot work volume of overhauing, have reduced the on-the-spot operation risk of overhauing, have reduced the number of times of repeated dismantlement, are favorable to prolonging the life of density relay, have solved the problem that must dismantle when current density relay check-up.

Description

Density relay calibration device and system

Technical Field

The utility model belongs to the technical field of the check-up equipment, concretely relates to density is calibration equipment and system for relay.

Background

Density relays control the operation of the relay by means of variations in the gas pressure, commonly known as the SF6 relay, SF6 gas in the SF6 relay being sealed in a fixed and unchanging container having a density value at 20 ℃ and nominal pressure, the density value of SF6 gas being constant, despite the variation in pressure of SF6 gas with temperature, within the various allowable conditions for the operation of the relay. Since the insulation and arc extinguishing performance of SF6 relays depends to a large extent on the purity and density of SF6 gas, the detection of the purity and the monitoring of the density of SF6 gas are of particular importance. If a normal pressure gauge is used to monitor a leak of SF6 gas, it is unclear whether the pressure of the SF6 gas changes due to the fact that there is a leak or due to a change in ambient temperature.

However, in actual production, isolation measures are not considered in design by part of manufacturers, so that the density relay needs to be disassembled and checked. Therefore, the on-site overhaul workload and operation risk are increased; on the other hand, repeated disassembly also leads to an increased probability of damage to the density relay.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a density is calibration equipment and system for relay has solved the problem that must dismantle when current density relay check-up to dismantle density relay when avoiding the check-up, reduced the on-the-spot maintenance work load, reduced the on-the-spot maintenance operation risk, reduced the number of times of repeated dismantlement, be favorable to prolonging density relay's life.

The utility model discloses the technical scheme who adopts does:

on one hand, the utility model provides a density is calibration equipment for relay, including calibration portion and the calibration piece that is located calibration portion, wherein, calibration piece includes the trachea that is located calibration portion, the isolation valve of fixing on the trachea and the check valve that communicates in the trachea, and the isolation valve separates the trachea and is anterior segment and back end, and one end of check valve is the link that communicates in the anterior segment, and the other end of check valve is the calibration end that passes calibration portion and extend to the external world;

when the isolation valve is opened, the gas flows through the front section and the rear section in sequence; when the isolation valve is closed, gas flows through the front section to the check valve for checking.

The checking device avoids repeated disassembly and assembly of the density relay and prolongs the service life of the density relay through the mutual matching of the checking part and the checking piece; the convenience of the checking work is improved, and the workload is reduced.

Optionally, a calibration interface adapted to the calibration device is provided on the calibration end of the calibration valve.

Optionally, one end of the checking part is provided with at least one air inlet, and the other end of the checking part is provided with at least one air outlet.

Optionally, an air outlet pipe is inserted into the air outlet of the checking part.

Optionally, the checking part is further provided with a connecting piece, the connecting piece comprises a locking piece fixed on the checking part or the air outlet pipe and a connecting ring arranged on the checking part or the air outlet pipe in a sliding manner, and the connecting ring is provided with a locking rod matched with the locking piece;

and the connecting ring, the checking part and the air outlet pipe are respectively provided with a corresponding flange to prevent the connecting ring from being separated.

Alternatively, the locking member includes a locking plate attached to the proof portion or the outlet tube and a locking hole provided on the locking plate.

Optionally, the locking rod includes a first rod and a second rod, the first rod is connected to the connecting ring, one end of the second rod is connected to the first rod, and the other end of the second rod is coaxially disposed in the locking hole.

Optionally, the attachment ring includes a ring body and a first thread located on an inner or outer side of the ring body;

when the first threads are located on the inner side of the ring body, the inner side of the ring body is divided into a sliding section and a thread section, and the diameter of the thread section is larger than that of the sliding section, so that the top surface of the first threads is lower than that of the sliding section.

On the other hand, the utility model provides a check-up system for density relay, which comprises a check-up device;

the checking system also comprises a first device and a second device which are respectively positioned at two ends of the checking device.

This calibration system is through the use of other equipment for the calibration equipment is on the basis of check-up effect, and is mutually supported with other equipment, so that the gas flow has expanded calibration equipment's application range.

Optionally, the first device is connected to the verification part and communicated with the air pipe;

and a second thread which is matched with the first thread is arranged on the second equipment.

The utility model has the advantages that:

this verifying attachment and system pass through mutually supporting of check-up portion and check-up piece, have avoided the dismantlement of density relay, have reduced the on-the-spot work load of overhauing, have reduced the on-the-spot operation risk of overhauing, have reduced the number of times of repeated dismantlement, are favorable to prolonging the life of density relay.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a calibration system for a density relay;

FIG. 2 is a schematic view of the connecting member connected to the verifying part;

FIG. 3 is a schematic view of the connection of the connector to the outlet tube when the first thread is external;

FIG. 4 is a schematic view of the locking member and the outlet tube;

FIG. 5 is a schematic view of the connection of the connector to the outlet tube when the first thread is an internal thread;

fig. 6 is a partially enlarged schematic view of a portion a in fig. 5.

In the figure: 1. a verification section; 2. an air tube; 21. a front section; 22. a rear section; 3. an isolation valve; 4. a check valve; 5. checking an interface; 6. an air outlet pipe; 7. a first device; 8. a second device; 91. a locking member; 92. a connecting ring; 93. locking the lever.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1:

as shown in fig. 1 to 6, the calibration device for the density relay of the present embodiment includes a calibration portion 1 and a calibration member located in the calibration portion 1, wherein the calibration member includes an air tube 2 located in the calibration portion, an isolation valve 3 fixed on the air tube 2, and a calibration valve 4 communicated with the air tube 2, the isolation valve 3 separates the air tube 2 into a front section 21 and a rear section 22, one end of the calibration valve 4 is a connection end communicated with the front section 21, and the other end of the calibration valve 4 is a calibration end extending to the outside through the calibration portion;

when the isolation valve 3 is opened, the gas flows through the front section 21 and the rear section 22 in sequence; when the isolation valve 3 is closed, the gas flows through the front section 21 to the check valve 4 for checking.

Aiming at the problem that the existing density relay can be checked after being disassembled, the device for checking the density relay avoids the disassembly of the density relay through the mutual matching of the checking part 1 and the checking piece, reduces the on-site maintenance workload, reduces the on-site maintenance operation risk, reduces the repeated disassembly times, and is beneficial to prolonging the service life of the density relay.

The checking part 1 plays a role in connection on one hand, and the checking part 1 provides an installation space for a checking piece on the other hand; the checking piece has a simple structure, is easy to produce and manufacture, and is beneficial to reducing the production cost; and the checking operation of the checking piece is simple, the checking piece is easy to learn and master, and the popularization cost is reduced.

The utility model provides an among the specific implementation, as an option, the check-up of check valve 4 is served and is equipped with the check-up interface 5 that suits with the check-up equipment. The calibration interface 5 is convenient for the calibration equipment to be connected to the test valve 4, so that the disassembly is avoided, and the calibration operation is simplified.

For the verification process, after the verification equipment is connected with the verification interface 5, the isolation valve 3 is closed, the verification valve 4 is opened, and gas flows to the verification equipment through the front section 21 and the verification valve 4 to be verified. In the normal use process, isolation valve 3 is opened, check valve 4 is closed, and the check equipment breaks away from with check interface 5, and gaseous flow through anterior segment 21 and back end 22 in proper order.

The utility model provides an among the concrete implementation mode, as an option, the one end of verification portion 1 is equipped with at least one air inlet, and the other end of verification portion is equipped with at least one gas outlet. The checking part 1 is connected with other equipment into a whole through the arrangement of the air inlet and the air outlet to form a system.

Optionally, the number, size, etc. of air inlets and air outlets are adapted to the connected equipment, and the utility model discloses do not do any restriction to this.

The utility model provides an in the embodiment, as an option, it has outlet duct 6 to peg graft on the gas outlet of check-up portion 1. The outlet duct 6 has lengthened the length of the checking part 1 to be convenient for the checking part 1 to connect to other equipment, and the diameter of the outlet duct 6 is small at the same time, so as to be convenient for use in a small space.

Optionally, according to the actual use condition, the outlet duct 6 chooses the pipeline of straight tube, return bend or other suitable types for use, the utility model discloses do not do any restriction to this.

In the specific embodiment provided by the present invention, as an option, the calibration part 1 is further provided with a connecting piece, the connecting piece includes a locking piece 91 fixed on the calibration part 1 or the outlet pipe 6 and a connecting ring 92 slidably arranged on the calibration part 1 or the outlet pipe 6, and the connecting ring 92 is provided with a locking rod 93 adapted to the locking piece 91;

the connecting ring 92, the verifying part 1 and the air outlet pipe 6 are respectively provided with corresponding flanges to prevent the connecting ring 92 from being separated.

For the connector, a locking rod 93 is inserted into the locking member 91 to prevent the connection ring 92 from rotating, and to prevent the connection ring 92 from being separated from the calibration part 1 or the air outlet pipe 6. When the checking device is connected with other equipment, the connecting ring 92 is slid to disengage the locking rod 93 from the locking piece 91, and simultaneously the connecting ring 92 is gradually approached and inserted to other equipment to realize connection.

The locking member 91 cooperates with the locking lever 93 to prevent the attachment ring 92 from being disengaged. The locking lever 93 can also provide a fulcrum during the sliding of the connection ring 92, so that the sliding of the connection ring 92 can be conveniently and quickly realized. The connection of the connection ring 92 is realized, and the connection ring 92 has a simple structure, which is beneficial to reducing the production cost.

The connecting piece is convenient to realize the dismouting of verification portion 1, is convenient for use in the little space through the control to go-between 92 sliding distance, has expanded application range. The connecting piece has simple structure and convenient operation, and is favorable for popularization and mastering.

As shown in fig. 2, for the connection of the connector to the verification part 1, the locking member 91 is integrally formed with the verification part 1, the connection ring 92 is slidably disposed in the verification part 1, and both the outer side of the connection ring 92 and the inner side of the verification part are provided with flanges to prevent the connection ring 92 from being separated from the verification part 1.

As shown in fig. 3-6, for the connection of the connector to the outlet tube 6, the locking member 91 is fixedly disposed on the outlet tube 6, the connecting ring 92 is sleeved on the outlet tube 6, and the inner side of the connecting ring 92 and the outer side of the outlet tube 6 are both provided with matching flanges to prevent the connecting ring 92 from separating from the outlet tube 6.

In the embodiment provided by the present invention, the locking member 91 includes a locking plate connected to the calibration part 1 or the outlet duct 6 and a locking hole formed in the locking plate. A locking lever 93 is inserted into the locking hole to fix the position of the connection ring 92 at the calibration part 1 or the outlet pipe 6.

When pegging graft in the locking hole to locking lever 93, through interference fit, round pin axle, key or other conventional modes to fixed locking lever 93 and the relative position between the locking hole, the utility model discloses do not do any restriction to this.

In the embodiment provided by the present invention, the locking rod 93 comprises a first rod and a second rod, the first rod is connected to the connecting ring 92, one end of the second rod is connected to the first rod, and the other end of the second rod is coaxially disposed in the locking hole.

When the connection ring 92 is slid, a user holds the first and/or second shaft, which serves as a fulcrum to facilitate the sliding of the connection ring 92. When the second rod is inserted into the locking hole, the connecting ring 92 is fixed, and the second rod and the locking member 91 are arranged in a one-to-one correspondence.

In the embodiment provided by the present invention, the connection ring 92 includes a ring body and a first thread located on the inner side or the outer side of the ring body, as an option. The connecting ring 92 is connected to other equipment through a first thread, and the threaded connection is simple in structure and convenient to disassemble and assemble.

As shown in fig. 5-6, when the first thread is located inside the ring body, the inside of the ring body is divided into a sliding section and a thread section, and the diameter of the thread section is larger than that of the sliding section, so that the top surface of the first thread is lower than that of the sliding section. The top surface friction checking part 1 or the air outlet pipe 6 of the first thread is avoided, the abrasion is reduced, and the service life is prolonged.

Example 2:

as shown in fig. 1 to fig. 6, a calibration system for a density relay according to the present embodiment includes a calibration device; the checking system further comprises a first device 7 and a second device 8, located at the two ends of the checking means, respectively.

When the checking system works, for example, the air inlet end of the checking device is connected to the first equipment 7, and the air outlet end of the checking device is connected to the second equipment 8, when the checking device works normally, the isolation valve 3 is opened, the check valve 4 is closed, the gas flowing through the first equipment 7 flows through the checking device into the second equipment 8, and the gas flows to other directions through the distribution of the second equipment 8.

When the checking device checks, the isolation valve 3 is closed, the check valve 4 is opened, the gas flowing through the first equipment 7 flows to the check valve 4, then enters the check equipment, the check of the first equipment 7 is realized, and the first equipment 7 is corrected according to the check result.

In the embodiment provided by the present invention, the first device 7 is connected to the calibration part 1 and is communicated with the air tube 2; the second device 8 is provided with a second thread adapted to the first thread.

For the verification system, as shown in fig. 1, the first device 7 is a density relay, the second device 8 is a gas chamber, and the gas chamber is communicated with at least one gas pipe 2, so as to distribute gas entering the gas chamber.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. A calibration device for a density relay is characterized in that: the checking device comprises a checking part (1) and a checking piece positioned in the checking part (1), wherein the checking piece comprises an air pipe (2) positioned in the checking part, an isolation valve (3) fixed on the air pipe (2) and a checking valve (4) communicated with the air pipe (2), the isolation valve (3) separates the air pipe (2) into a front section (21) and a rear section (22), one end of the checking valve (4) is a connecting end communicated with the front section (21), and the other end of the checking valve (4) is a checking end extending to the outside through the checking part;

when the isolation valve (3) is opened, the gas flows through the front section (21) and the rear section (22) in sequence; when the isolation valve (3) is closed, the gas flows through the front section (21) to the check valve (4) for checking.

2. The verification device according to claim 1, wherein: a calibration interface (5) which is adaptive to the calibration equipment is arranged on the calibration end of the calibration valve (4).

3. The verification device according to claim 1, wherein: one end of the checking part (1) is provided with at least one air inlet, and the other end of the checking part is provided with at least one air outlet.

4. A verification device according to claim 3, wherein: an air outlet pipe (6) is inserted into the air outlet of the checking part (1).

5. The verification device of claim 4, wherein: the checking part (1) is also provided with a connecting piece, the connecting piece comprises a locking piece (91) fixed on the checking part (1) or the air outlet pipe (6) and a connecting ring (92) arranged on the checking part (1) or the air outlet pipe (6) in a sliding way, and the connecting ring (92) is provided with a locking rod (93) matched with the locking piece (91);

the connecting ring (92), the checking part (1) and the air outlet pipe (6) are respectively provided with a corresponding flange to prevent the connecting ring (92) from being separated.

6. The verification device of claim 5, wherein: the locking piece (91) comprises a locking plate connected to the verification part (1) or the air outlet pipe (6) and a locking hole positioned on the locking plate.

7. The verification device of claim 6, wherein: the locking rod (93) comprises a first rod body and a second rod body, the first rod body is connected to the connecting ring (92), one end of the second rod body is connected to the first rod body, and the other end of the second rod body is coaxially arranged in the locking hole.

8. The verification device of claim 5, wherein: the connecting ring (92) comprises a ring body and a first thread positioned on the inner side or the outer side of the ring body;

9. A check-up system for a density relay is characterized in that: comprising a verification device according to any of claims 1-8;

the checking system further comprises a first device (7) and a second device (8) respectively located at both ends of the checking device.

10. The verification system of claim 9, wherein: the first equipment (7) is connected to the checking part (1) and communicated with the air pipe (2);

and a second thread which is matched with the first thread is arranged on the second device (8).