Sulfur hexafluoride gas circuit breaker inflation valve uninterrupted power transformation device

Abstract

The utility model relates to an uninterruptible power transformation device for an inflation valve of a sulfur hexafluoride gas circuit breaker. The uninterruptible power transformation device comprises a sulfur hexafluoride density relay, a three-way valve, a brass hose with an adapter, a hoop and a fixed seat, the lower portion of the supporting column is coaxially sleeved with a hoop, the hoop is connected with the fixing base and used for fixedly installing the fixing base on the supporting column, and a three-way valve is installed on the fixing base. A first interface of the three-way valve is connected with the sulfur hexafluoride density relay and is used for monitoring the pressure of sulfur hexafluoride gas; and a second interface of the three-way valve is connected with one end of a brass hose with an adapter, and the other end of the brass hose with the adapter is connected with an inflation valve of the original sulfur hexafluoride gas circuit breaker and is used for introducing gas in a gas chamber of the circuit breaker into the three-way valve. According to the utility model, the inflation valve can be transformed under the conditions that power is not cut and sulfur hexafluoride gas in the circuit breaker does not need to be discharged completely.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment and relates to a non-stop transformation device for a charging valve, in particular to a non-stop transformation device for a charging valve of a sulfur hexafluoride gas circuit breaker. Background Art

[0002] At present, the connection method between the sulfur hexafluoride density relay and the sulfur hexafluoride gas circuit breaker body should meet the requirement that the density relay can be calibrated under energized conditions without removing the density relay from the circuit breaker body.

[0003] In order to meet this requirement, the traditional method is to replace the inflation valve installed on the sulfur hexafluoride gas circuit breaker body with a three-way valve, and the three-way valve controls the on-off between the sulfur hexafluoride density relay and the sulfur hexafluoride gas circuit breaker body. Figure 1 As shown in the upper part, it includes: the original sulfur hexafluoride gas circuit breaker charging valve 6, the sulfur hexafluoride gas circuit breaker body 7, the circular connecting plate 8, the support column 9, the square support seat 10 and the original sulfur hexafluoride density relay 11; the bottom of the sulfur hexafluoride gas circuit breaker body 7 is fixedly mounted on the support column 9 below it, the sulfur hexafluoride gas circuit breaker body 7 is fixedly connected with the circular connecting plate 8 below, and the square support seat 10 is also fixedly mounted on the support column 9, the circular connecting plate 8 is sleeved on the support column 9, and is connected with the square support seat 10 below it. The SF6 gas circuit breaker body 7 is fixedly mounted on the support column 9 to ensure that the SF6 gas circuit breaker body 7 can be stably mounted on the support column 9; the original SF6 gas circuit breaker charging valve 6 is also installed on the SF6 gas circuit breaker body 7 to inflate the SF6 gas circuit breaker; the original SF6 density relay 11 is installed on the original circuit breaker charging valve 6, and the original SF6 density relay 11 is connected to the SF6 gas circuit breaker body 7 to monitor the SF6 gas pressure in the SF6 gas circuit breaker;

[0004] However, when the above-mentioned inflation valve is modified and replaced with a three-way valve, the equipment needs to be powered off and all the sulfur hexafluoride gas in the circuit breaker needs to be released. The original method is time-consuming, labor-intensive and has harsh conditions.

[0005] Therefore, the utility model proposes a device that can transform the inflation valve without power outage or releasing all the sulfur hexafluoride gas in the circuit breaker.

[0006] After searching, no public documents of the prior art that are identical or similar to the present utility model were found. Utility Model Content

[0007] The utility model aims to overcome the shortcomings of the prior art and provides a device for modifying the charging valve of a sulfur hexafluoride gas circuit breaker without power outage, which can modify the charging valve without power outage or releasing all the sulfur hexafluoride gas in the circuit breaker.

[0008] The utility model solves the practical problem by adopting the following technical solutions:

[0009] A non-stop power-off transformation device for a sulfur hexafluoride gas circuit breaker charging valve, comprising: a sulfur hexafluoride density relay, a three-way valve, a brass hose with an adapter, a hoop and a fixing seat;

[0010] A hoop is coaxially sleeved on the lower part of the support column, and the hoop is connected to the fixing seat, which is used to fix the fixing seat on the support column, and a three-way valve is installed on the fixing seat; the first interface of the three-way valve is connected to the sulfur hexafluoride density relay, which is used to monitor the sulfur hexafluoride gas pressure; the second interface of the three-way valve is connected to one end of a brass hose with an adapter, and the other end of the brass hose with an adapter is connected to the original sulfur hexafluoride gas circuit breaker charging valve, which is used to introduce the circuit breaker gas chamber gas into the three-way valve;

[0011] Moreover, the third interface of the three-way valve is connected to a sulfur hexafluoride density relay calibrator for calibrating the sulfur hexafluoride density relay.

[0012] Moreover, a rain cover is additionally provided above the sulfur hexafluoride density relay.

[0013] Moreover, the structure of the brass hose with the adapter is that a layer of metal hose is sheathed on the copper air pipe.

[0014] Moreover, the adapter of the copper air pipe is an inflation joint structure, which can push open the check valve in the inflation valve.

[0015] Advantages and beneficial effects of the utility model:

[0016] 1. The utility model proposes a non-stop power-off modification device for a sulfur hexafluoride gas circuit breaker charging valve, comprising a three-way valve, a sulfur hexafluoride density relay, a brass hose with an adapter, a hoop and a fixing seat. By adding the above components and connecting them reliably, the modification can be completed without power off or gas release, thereby realizing the function of non-disassembly verification of the sulfur hexafluoride circuit breaker density relay.

[0017] 2. When the utility model is used to transform the charging valve of the sulfur hexafluoride circuit breaker, it is not necessary to shut down the sulfur hexafluoride circuit breaker or release all the sulfur hexafluoride gas in the circuit breaker, so that the equipment can be transformed with power on and gas on, reducing personnel costs and the inconvenience caused by power outages, ensuring the reliable operation of the sulfur hexafluoride circuit breaker, and having the characteristics of simplicity, reasonable design, time-saving and labor-saving, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Description of reference numerals:

[0020] 1-three-way valve; 2-sulfur hexafluoride density relay; 3-brass hose with adapter; 4-hoop; 5-fixed seat; 6-original sulfur hexafluoride gas circuit breaker charging valve; 7-sulfur hexafluoride gas circuit breaker body; 8-round connecting plate; 9-support column; 10-square support seat; 11-original sulfur hexafluoride density relay; 12-rain cover; 1-1-the first interface of the three-way valve; 1-2-the second interface of the three-way valve; 1-3-the third interface of the three-way valve. DETAILED DESCRIPTION

[0021] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0022] A non-stop power-on transformation device for a sulfur hexafluoride gas circuit breaker charging valve, such as Figure 1 The lower part shows: sulfur hexafluoride density relay, three-way valve, brass hose with adapter, hoop and fixing seat;

[0023] A hoop is coaxially sleeved on the lower part of the support column, and the hoop is connected to the fixing seat, which is used to fix the fixing seat on the support column, and a three-way valve is installed on the fixing seat; the first interface of the three-way valve is connected to the sulfur hexafluoride density relay, which is used to monitor the sulfur hexafluoride gas pressure; the second interface of the three-way valve is connected to one end of a brass hose with an adapter, and the other end of the brass hose with an adapter is connected to the original sulfur hexafluoride gas circuit breaker charging valve, which is used to introduce the circuit breaker gas chamber gas into the three-way valve;

[0024] In this embodiment, the third interface of the three-way valve is connected to a sulfur hexafluoride density relay calibrator for calibrating the sulfur hexafluoride density relay;

[0025] In this embodiment, a rain cover is provided above the sulfur hexafluoride density relay to protect the sulfur hexafluoride density relay from being affected by climate and rain;

[0026] In this embodiment, the structure of the brass hose with adapter is as follows: a layer of metal hose is placed on the copper air pipe to protect the copper air pipe from the influence of climate and rain;

[0027] In this embodiment, the adapter of the copper gas pipe is an inflation joint structure, which can push open the check valve in the inflation valve to ensure the flow of sulfur hexafluoride gas;

[0028] The working process of the utility model is:

[0029] A method for modifying a sulfur hexafluoride gas circuit breaker charging valve without power outage comprises the following steps:

[0030] (1) Install the fixing base on the support column with a hoop;

[0031] (2) Install the three-way valve on the fixed seat and fix it firmly;

[0032] (3) Install the sulfur hexafluoride density relay on the three-way valve and assemble the rain cover above the sulfur hexafluoride density relay;

[0033] (4) Connect one end of the brass hose with adapter to the interface of the newly installed three-way valve;

[0034] (5) Connect the other end of the brass hose with the adapter to the original sulfur hexafluoride gas circuit breaker charging valve interface, and connect the gas circuit after tightening;

[0035] (6) Perform leak tests on all installed joints and pipe connections to ensure that there is no leakage of sulfur hexafluoride gas.

[0036] (7) The three-way valve is turned to the position where the first interface and the third interface are connected, and the third interface is connected to the sulfur hexafluoride density relay calibrator to perform non-stop power calibration on the sulfur hexafluoride density relay;

[0037] Through the above steps, the original sulfur hexafluoride gas circuit breaker charging valve and density relay are retained. The two density relays realize dual monitoring of sulfur hexafluoride gas pressure. Through the reliable connection of the new three-way valve and the original sulfur hexafluoride gas circuit breaker charging valve, the sulfur hexafluoride gas circuit breaker charging valve can be transformed without power outage.

[0038] The utility model can replace the traditional inflation valve with a three-way valve without stopping the power supply and releasing all the sulfur hexafluoride gas in the circuit breaker, and control the on-off between the sulfur hexafluoride density relay and the sulfur hexafluoride gas circuit breaker body through the three-way valve, thereby meeting the requirement of non-disassembly calibration of the sulfur hexafluoride density relay.

[0039] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A non-stop power-off transformation device for the charging valve of a sulfur hexafluoride gas circuit breaker, characterized in that: include: Sulfur hexafluoride density relay, three-way valve, brass hose with adapter, ferrule and fixing seat; A hoop is coaxially sleeved on the lower part of the support column, and the hoop is connected to the fixing seat and is used to fix the fixing seat on the support column. A three-way valve is installed on the fixing seat; the first interface of the three-way valve is connected to the sulfur hexafluoride density relay and is used to monitor the sulfur hexafluoride gas pressure; the second interface of the three-way valve is connected to one end of a brass hose with an adapter, and the other end of the brass hose with an adapter is connected to the original sulfur hexafluoride gas circuit breaker charging valve and is used to introduce the circuit breaker gas chamber gas into the three-way valve.

2. The non-stop power-off transformation device for the charging valve of a sulfur hexafluoride gas circuit breaker according to claim 1 is characterized in that: The third interface of the three-way valve is connected to a sulfur hexafluoride density relay calibrator for calibrating the sulfur hexafluoride density relay.

3. The non-stop power-off transformation device for the charging valve of a sulfur hexafluoride gas circuit breaker according to claim 1 is characterized in that: A rain cover is additionally provided above the sulfur hexafluoride density relay.

4. The non-stop power-off transformation device for the charging valve of a sulfur hexafluoride gas circuit breaker according to claim 1 is characterized in that: The structure of the brass hose with the adapter is as follows: a layer of metal hose is sheathed on the copper air pipe.

5. The non-stop power-off transformation device for the charging valve of a sulfur hexafluoride gas circuit breaker according to claim 4 is characterized in that: The adapter of the copper air pipe is an inflation joint structure, which can push open the check valve in the inflation valve.

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