CN211166901U - Locomotive air storage cylinder pressure control system and locomotive - Google Patents
Locomotive air storage cylinder pressure control system and locomotive Download PDFInfo
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- CN211166901U CN211166901U CN201921868148.1U CN201921868148U CN211166901U CN 211166901 U CN211166901 U CN 211166901U CN 201921868148 U CN201921868148 U CN 201921868148U CN 211166901 U CN211166901 U CN 211166901U
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Abstract
The utility model relates to a locomotive stores up reservoir pressure control system and locomotive, locomotive store up reservoir pressure control system and include that first reservoir and second store up the reservoir, first reservoir and second store up the reservoir and communicate through parallelly connected first pipeline and second pipeline, are equipped with the check valve on the first pipeline, are equipped with the overflow valve on the second pipeline. The air source is provided from the outside and sequentially enters the first air storage cylinder and the second air storage cylinder; when the air source inflates the system, the check valve is opened, and the first air storage cylinder inflates air to the second air storage cylinder; and when the wind source stops inflating the system, the one-way valve is closed. When the locomotive normally runs, the air pressure value in the first air storage cylinder is higher than the preset pressure value of the overflow valve, the overflow valve can be opened, and the pressure balance of the first air storage cylinder and the second air storage cylinder is kept; when the locomotive breaks the hook, the overflow valve can be closed in time to keep the compressed air in the second air storage cylinder, so that the locomotive can still implement effective braking for a long time, and the braking safety of the locomotive is guaranteed.
Description
Technical Field
The utility model relates to a locomotive brake pressure control technical field especially relates to a locomotive stores up reservoir pressure control system and locomotive.
Background
At present, in the air brake mode widely applied in locomotive braking, compressed air generated by an air compressor is used as a brake motive power, and the pressure of the compressed air is changed to operate and control the braking of a train. The air storage cylinder is a high-pressure container for storing compressed air, air of the air storage cylinder is used in all places needing compressed air on a vehicle, and the air storage cylinder is a necessary key component in railway vehicles, subway vehicles and urban rail vehicles.
The locomotive is usually provided with a first air storage cylinder and a second air storage cylinder, and the connecting pipeline has two schemes:
firstly, install the check valve in the pipeline, its effect is that the inflation of guaranteeing locomotive reservoir department can only be gone on to the second reservoir by first reservoir. The disadvantages of this solution are: when the check valve is closed, the two air cylinders are in a disconnected state, and the pressure balance between the first air storage cylinder and the second air storage cylinder cannot be ensured, if the first air storage cylinder consumes a large amount of air, and the second air storage cylinder does not consume air, the locomotive cannot be inflated normally, so that the operation fault is caused;
secondly, on the basis of the first scheme, a 1mm shrinkage cavity is connected in parallel with the check valve. The method can basically realize the pressure balance between the first air storage cylinder and the second air storage cylinder due to the existence of the shrinkage cavity with the diameter of 1mm, but has the pressure balance time lag, and simultaneously has the risks that the locomotive has brake failure because the pressure air in the second air storage cylinder is continuously discharged after the locomotive is disconnected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a locomotive air reservoir pressure control system and locomotive to the above-mentioned problem that exists, through the setting of the overflow valve that the safe pressure can be adjusted, make the first air reservoir and second air reservoir still can communicate after the check valve closes, keep the pressure balance; and when the air in the first air storage cylinder is emptied in a short time due to the fault (such as hook breakage) of the locomotive, the overflow valve is automatically closed to keep the air in the second air storage cylinder, so that the locomotive can still implement braking for a long time.
The utility model adopts the technical scheme as follows:
a pressure control system of an air storage cylinder of a locomotive comprises a first air storage cylinder and a second air storage cylinder, wherein the first air storage cylinder and the second air storage cylinder are communicated through a first pipeline and a second pipeline which are connected in parallel, a one-way valve is arranged on the first pipeline, and an overflow valve is arranged on the second pipeline;
the air source is provided from the outside and sequentially enters the first air storage cylinder and the second air storage cylinder;
when the air source inflates the system, the check valve is opened, and the first air storage cylinder inflates air to the second air storage cylinder; when the air source stops inflating the system, the one-way valve is closed;
when the air pressure value in the first air storage cylinder is higher than the preset pressure value of the overflow valve, the overflow valve is opened, so that the first air storage cylinder and the second air storage cylinder are communicated.
Furthermore, the overflow valve is of an external control type, the control pressure of the overflow valve is taken from the first air storage cylinder, and the preset pressure value of the overflow valve is adjustable.
Furthermore, the overflow valve is pneumatically controlled, and a control port of the overflow valve is connected with the first air storage cylinder; or the overflow valve is electrically controlled, and when the air pressure value in the first air storage cylinder is greater than the preset pressure value of the overflow valve, the controller sends an instruction to open the overflow valve.
Further, the check valve is of an external control type or an automatic control type, and the opening and closing state of the check valve depends on the air pressure difference of an inlet and an outlet of the check valve.
Furthermore, the one-way valve is pneumatically controlled, and when the air pressure difference is greater than the dead weight of the valve core, the valve core is jacked up, and the one-way valve is conducted; or the one-way valve is electrically controlled, and when the air pump is inflated, the controller sends out an instruction to open the one-way valve.
The system can be used for keeping the pressure balance of the locomotive air storage cylinder, and the using method comprises the following steps:
and 4, after the inflation is finished, in the normal operation process, the overflow valve keeps an open state, and the first air storage cylinder and the second air storage cylinder keep pressure balance.
The system can also be used for maintaining the effective braking pressure of the air storage cylinder of the failed locomotive, and the using method comprises the following steps:
and 4, after the air inflation is finished, when the air pressure value in the first air storage cylinder is reduced to be lower than the preset pressure value of the overflow valve due to the failure of the locomotive, the overflow valve is automatically closed, and the air in the second air storage cylinder is kept.
Further, the fault is a hook breakage fault, and air in the first air storage tank is emptied in a very short time when the fault occurs.
Based on above-mentioned system, the utility model discloses still provide a locomotive, including above-mentioned arbitrary control system.
The technical scheme has the following advantages:
1. through the arrangement of the overflow valve, the first air storage cylinder and the second air storage cylinder can be communicated in the air consumption process, and the pressure balance is kept;
2. under the condition of hook breakage, the overflow valve is automatically closed, and compressed air in the second air storage cylinder can be kept, so that the locomotive can still implement effective braking for a long time under the condition of failure;
3. the safe pressure value can be adjusted and set as required.
By adopting the technical scheme, the problem of unequal pressure of the air storage cylinder of the locomotive can be effectively solved, the problem of unsynchronized air inflation of the multi-locomotive is solved, and the locomotive can still implement effective braking for a long time under the condition of hook failure.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic view of the overall structure of the present invention.
Description of reference numerals:
1-an air source, 2-a first air storage cylinder, 3-a second air storage cylinder, 4-a one-way valve and 5-an overflow valve.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Referring to fig. 1, the utility model relates to a locomotive reservoir pressure balance control system, including first reservoir 2 and second reservoir 3, first reservoir 2 and second reservoir 3 communicate through parallelly connected first pipeline and second pipeline. The air source 1 is provided from the outside and sequentially enters the first reservoir 2 and the second reservoir 3. The first pipeline is provided with a check valve 4, and the second pipeline is provided with an overflow valve 5. The one-way valve 4 is in a self-control type, and when the air pressure difference between the first air storage cylinder 2 and the second air storage cylinder 3 is enough to support the self weight of the valve core, the one-way valve 4 is automatically opened. The overflow valve 5 is of an external control type, and a control port of the overflow valve is connected with the first air storage cylinder 2, so that the control pressure of the overflow valve is obtained from the first air storage cylinder 2, and the preset pressure value of the overflow valve is adjustable.
The control system can be used for keeping the pressure balance of the locomotive air storage cylinder, and the using method comprises the following steps:
and 4, after the air inflation is finished, in the normal operation process, when the air pressure value in the first air storage cylinder 2 is higher than the preset pressure value of the overflow valve 5, the overflow valve 5 can be kept in an open state all the time, so that the first air storage cylinder 2 and the second air storage cylinder 3 keep pressure balance.
In addition, the control system can also be used for maintaining the effective braking pressure of the air storage cylinder of the failed locomotive, and is particularly suitable for the condition that the air in the first air storage cylinder is exhausted in a very short time when a hook breaking failure occurs, and the using method comprises the following steps:
and 4, after the air inflation is finished, when the air pressure value in the first air storage cylinder 2 of the locomotive is reduced to be lower than the preset pressure value of the overflow valve 5 due to a fault, the overflow valve 5 is automatically closed, so that the air in the second air storage cylinder 3 can be kept, the locomotive can be braked for a long time, and the braking safety of the locomotive in the fault is ensured. Thus, the preset pressure value of the relief valve 5 may also be referred to as a relief pressure value. When the control system is used, a reasonable safe pressure value can be set according to actual requirements, and generally about 450kPa can be set.
The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (6)
1. The utility model provides a locomotive stores up reservoir pressure control system, includes first reservoir and second reservoir, its characterized in that:
the first air storage cylinder and the second air storage cylinder are communicated through a first pipeline and a second pipeline which are connected in parallel, a check valve is arranged on the first pipeline, and an overflow valve is arranged on the second pipeline;
the air source is provided from the outside and sequentially enters the first air storage cylinder and the second air storage cylinder;
when the air source inflates the system, the check valve is opened, and the first air storage cylinder inflates air to the second air storage cylinder; when the air source stops inflating the system, the one-way valve is closed;
when the air pressure value in the first air storage cylinder is higher than the preset pressure value of the overflow valve, the overflow valve is opened, so that the first air storage cylinder and the second air storage cylinder are communicated.
2. The control system of claim 1, wherein: the overflow valve is of an external control type, the control pressure of the overflow valve is obtained from the first air storage cylinder, and the preset pressure value of the overflow valve is adjustable.
3. The control system of claim 2, wherein: the overflow valve is pneumatically controlled, and a control port of the overflow valve is connected with the first air storage cylinder; or the overflow valve is electrically controlled, and when the air pressure value in the first air storage cylinder is greater than the preset pressure value of the overflow valve, the controller sends an instruction to open the overflow valve.
4. The control system according to any one of claims 1 to 3, characterized in that: the one-way valve is of an external control type or an automatic control type, and the opening and closing state of the one-way valve depends on the air pressure difference of an inlet and an outlet of the one-way valve.
5. The control system of claim 4, wherein: the one-way valve is pneumatically controlled, and when the air pressure difference is greater than the self weight of the valve core, the valve core is jacked up, and the one-way valve is conducted; or the one-way valve is electrically controlled, and when the air pump is inflated, the controller sends out an instruction to open the one-way valve.
6. A locomotive comprising a control system according to any one of claims 1, 2, 3, 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868148.1U CN211166901U (en) | 2019-11-01 | 2019-11-01 | Locomotive air storage cylinder pressure control system and locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868148.1U CN211166901U (en) | 2019-11-01 | 2019-11-01 | Locomotive air storage cylinder pressure control system and locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211166901U true CN211166901U (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921868148.1U Active CN211166901U (en) | 2019-11-01 | 2019-11-01 | Locomotive air storage cylinder pressure control system and locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211166901U (en) |
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2019
- 2019-11-01 CN CN201921868148.1U patent/CN211166901U/en active Active
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