CN215931946U - Pressure relay's check-up base and system - Google Patents
Pressure relay's check-up base and system Download PDFInfo
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- CN215931946U CN215931946U CN202121475168.XU CN202121475168U CN215931946U CN 215931946 U CN215931946 U CN 215931946U CN 202121475168 U CN202121475168 U CN 202121475168U CN 215931946 U CN215931946 U CN 215931946U
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- 238000012795 verification Methods 0.000 claims description 17
- 239000011295 pitch Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004164 analytical calibration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application provides a pressure relay's check-up base and system includes: a base and a connector; the pressure relay is arranged on the base, the pressure relay is arranged on the pressure relay, and the pressure relay is used for measuring the pressure of the pressure relay; the connector is connected with the base to improve the safety and reliability of the pressure relay.
Description
Technical Field
The application relates to the technical field of instrument calibration equipment, in particular to a calibration base and a system of a pressure relay.
Background
The pressure relay is often used as the signal feedback of the input or exit position of the hydraulic turbine governor accident pressure distribution valve in the hydraulic power plant. The pressure relay can visually feed back the state signal of the accident pressure distribution valve according to the pressure change by switching on the pressure source, so that the operation and maintenance personnel of the hydraulic power plant can conveniently and accurately master the working state of the accident pressure distribution valve in time, and the operation and maintenance work of the hydraulic power plant is helped. If the feedback signal of the pressure relay is out of alignment or fails, the position state of the accident pressure distribution valve cannot be judged, which brings great inconvenience to operation and maintenance personnel and seriously affects the normal safe and stable operation of the unit. Therefore, the accuracy of the feedback signal of the pressure relay is very important for estimating the working state of the emergency distribution valve of the governor.
In the operation process of the pressure relay, an internal pressure measuring mechanism may be out of alignment, so that the measurement accuracy is not high. In order to improve the accuracy of the pressure feedback signal, the pressure relay needs to be periodically checked. At present, the existing pressure relay is not suitable for a pressure calibration table, and great inconvenience is brought to the calibration work of the pressure relay.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a pressure relay's check-up base and system for the technological defect that pressure relay that exists can't use the pressure check-up platform to carry out the check-up among the effectual improvement prior art.
In a first aspect, an embodiment of the present application provides a pressure relay's verification base, including: a base and a connector; the pressure relay is arranged on the base, the pressure relay is arranged on the pressure relay, and the pressure relay is used for measuring the pressure of the pressure relay; the connector is connected with the base.
With reference to the first aspect, in a first possible implementation manner, one first screw hole and the other first screw hole of the pair of first screw holes are oppositely arranged along the first direction on two sides of the verification oil hole.
With reference to the first aspect, in a second possible implementation manner, one second screw hole and the other second screw hole in the pair of second screw holes are oppositely arranged along a second direction on two sides of the verification oil hole, where the first direction is different from the second direction.
With reference to the first possible implementation manner and the second possible implementation manner of the first aspect, in a third possible implementation manner, a distance between the first screw hole and the verification oil hole is a first distance, a distance between the second screw hole and the verification oil hole is a second distance, and the first distance and the second distance are determined according to the type of the pressure relay.
With reference to the first aspect, in a fourth possible implementation manner, the connector is in threaded connection with the base.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the connector is fixed by a fastening nut.
With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the connection head is an M20 connection head.
With reference to the first aspect, in a seventh possible implementation manner, an O-shaped seal is used at a connection portion of the check oil hole and the pressure relay.
In a second aspect, an embodiment of the present application provides a verification system for a pressure relay, where the system includes: the pressure calibration table is connected with the calibration base of the pressure relay.
Compared with the prior art, the utility model has the beneficial effects that: according to the pressure relay checking device, the pressure relays are installed by setting the screw holes with various screw pitches on the base, the bolt hole distances of different pressure relays are different, and the installation direction is adjusted only by setting the screw pitches of the screw holes and the distances between the screw holes and the checking oil holes according to the specific types of the pressure relays, so that the pressure relays are conveniently fixed, and further the checking of the pressure relays is carried out. By the structure, the technical problem that the pressure relay cannot be checked by using the conventional pressure checking table can be solved, and the operation reliability of equipment is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is an exemplary structural diagram of a calibration base of a pressure relay according to an embodiment of the present disclosure;
fig. 2 is an exemplary structural diagram of another calibration base of a pressure relay according to an embodiment of the present disclosure.
Icon: the checking device comprises a base 1, a connector 2, a checking oil hole 3, a first screw hole 41, a second screw hole 42 and a fastening nut 5.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
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. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The pressure relay is a component that actuates the electrical contact when the fluid pressure reaches a predetermined value in the hydraulic system. The pressure relay can also be defined as a hydraulic component for converting pressure into an electric signal, the function of outputting the electric signal under a certain set pressure can be realized by adjusting the pressure relay according to the pressure design requirement of the pressure relay, and the pressure relay has four structural forms of a plunger type, a diaphragm type, a spring tube type and a bellows type.
Specifically, the pressure relay mainly comprises a pressure transmission device, a microswitch and the like, wherein liquid or gas pressure pushes a rubber membrane and a sliding rod through a pressure inlet to overcome the counterforce of a spring to move upwards, when the pressure reaches a set pressure, the microswitch is triggered to send a control signal, and the set pressure can be changed by rotating a pressure regulating nut.
Referring to fig. 1 and fig. 2, an embodiment of the present application provides a calibration base for a pressure relay, including: a base and a connector; the pressure relay is arranged on the base, the pressure relay is arranged on the pressure relay, and the pressure relay is used for measuring the pressure of the pressure relay; the connector is connected with the base.
Specifically, one first screw hole and the other first screw hole in the pair of first screw holes are oppositely arranged along a first direction on two sides of the check oil hole; one second screw hole and the other second screw hole in the pair of second screw holes are oppositely arranged on two sides of the verification oil hole along a second direction, wherein the first direction is different from the second direction. The sizes of the screw holes of the first screw hole and the second screw hole can be the same or different, and the specific size of the screw hole can be set adaptively. In the embodiment of the present application, the sizes of the first screw holes and the second screw holes are the same, and both the sizes of the screw holes are phi 5.
As a possible embodiment, a distance between the first screw hole and the verification oil hole is a first distance, a distance between the second screw hole and the verification oil hole is a second distance, and the first distance and the second distance are determined according to the type of the pressure relay. The first screw hole and the second screw hole can fix the pressure relay with different screw pitches, and the pressure relay with different screw pitches only needs to rotate in the direction, finds the corresponding screw hole and can finish fixing.
In this application embodiment, a pair of first screw and a pair of second screw all set up with the verification oilhole as the center, and first screw and second screw crisscross adjacent setting are around the verification oilhole.
As a possible embodiment, the base has a certain thickness, and the shape of the base can be selected according to the pressure relay. For example, the shape of the base may be rectangular or circular, and the shape of the base is not particularly limited.
As a possible embodiment, the connector is in threaded connection with the base. Specifically, the base has relative first face and second face, is provided with a pair of first screw and a pair of second screw on the first face, uses the check-up oilhole to set up the joint screw as the center on the second face, and the connector carries out threaded connection through joint screw and base. Connector one end is connected with the base, and the other end and the pressure check-up platform of connector are connected for in transmitting the oil pressure in the pressure check-up platform to pressure relay through the check-up oilhole, and carry out the check-up to pressure relay.
As a possible embodiment, the connector is an M20 connector, and the connector is fixed by a fastening nut. Specifically, the conventional size phi 8 is adopted for the check oil hole, the connector is an M20 connector, the stud thread in the connector is a G/2 metric thread, the length of the connector is 3cm, the connector is provided with a fastening nut for dismounting and fixing the connector, and the thickness of the fastening nut is 1 cm.
As a possible implementation mode, in order to further improve the safety, O-shaped sealing is adopted at the joint of the check oil hole and the pressure relay, so that the risk of oil leakage of the contact surface of the base and the pressure relay is prevented.
The embodiment of the application further provides a calibration system of the pressure relay, and the system comprises: the pressure calibration table is connected with the calibration base of the pressure relay.
The use process of the checking base of the pressure relay is as follows: when carrying out the check-up, fix inspection base and connector on pressure check-up platform M20 box thread earlier, then install pressure relay on the base based on first screw or second screw, installation pressure relay can choose for use according to the screw pitch of difference and fix with the screw, only need fix it through the direction of adjustment pressure relay installation. When the pressure relay is checked, the pressure relay is pressurized through the pressure checking platform, the on-off condition of the auxiliary contact of the pressure relay is measured, and the actual action value and the return value of the pressure relay are measured. If the action value, the return value and the set fixed value have errors, the pressure adjusting piece of the pressure relay is properly adjusted to enable the fixed value to meet the requirement.
To sum up, this application embodiment provides a pressure relay's check-up base, includes: a base and a connector; the pressure relay is arranged on the base, the pressure relay is arranged on the pressure relay, and the pressure relay is used for measuring the pressure of the pressure relay; the connector is connected with the base.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a pressure relay's check-up base which characterized in that includes: a base and a connector;
the pressure relay is characterized in that the base is provided with a pair of first screw holes, a pair of second screw holes and a checking oil hole, the first screw holes are provided with first screw pitches, the second screw holes are provided with second screw pitches, the first screw holes and the second screw holes are used for installing the pressure relay, the checking oil hole is used for connecting a pressure checking platform, and the sizes of the first screw pitches and the second screw pitches are determined according to the types of the pressure relay;
the connector with the base is connected.
2. The pressure relay checking base of claim 1, wherein one first screw hole and the other first screw hole of the pair of first screw holes are oppositely disposed along the first direction at both sides of the checking oil hole.
3. The pressure relay calibration base of claim 1, wherein one second screw hole and the other second screw hole of the pair of second screw holes are oppositely disposed along a second direction on both sides of the calibration oil hole, wherein the first direction is different from the second direction.
4. The pressure relay checking base according to claims 2 and 3, wherein a distance between the first screw hole and the checking oil hole is a first distance, a distance between the second screw hole and the checking oil hole is a second distance, and the first distance and the second distance are determined according to a type of the pressure relay.
5. The pressure relay calibration base of claim 1, wherein the connector is in threaded connection with the base.
6. The pressure relay calibration base of claim 5, wherein the connector is fixed by a fastening nut.
7. The pressure relay verification base of claim 6, wherein the connector is an M20 connector.
8. The pressure relay checking base of claim 1, wherein the connection between the checking oil hole and the pressure relay is sealed by an O-shaped seal.
9. A verification system for a pressure relay, the system comprising: a pressure verification table and a verification base of the pressure relay of any one of claims 1-8, the pressure verification table being connected with the verification base of the pressure relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121475168.XU CN215931946U (en) | 2021-06-29 | 2021-06-29 | Pressure relay's check-up base and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121475168.XU CN215931946U (en) | 2021-06-29 | 2021-06-29 | Pressure relay's check-up base and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215931946U true CN215931946U (en) | 2022-03-01 |
Family
ID=80400315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121475168.XU Withdrawn - After Issue CN215931946U (en) | 2021-06-29 | 2021-06-29 | Pressure relay's check-up base and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215931946U (en) |
-
2021
- 2021-06-29 CN CN202121475168.XU patent/CN215931946U/en not_active Withdrawn - After Issue
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220301 Effective date of abandoning: 20231225 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220301 Effective date of abandoning: 20231225 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |