Differential pressure sampling tube structure
By designing a pressure differential sampling tube structure on the gas turbine hood cooling fan, the problem of easy blockage of the sampling port is solved, more accurate pressure differential detection and lower cleaning difficulty are achieved, and safety hazards are reduced.
Patent Information
- Application Number
- CN202420692611.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The pressure difference sampling port of the existing gas turbine hood cooling fan is easily blocked, resulting in inaccurate detection of pressure differentials and poses safety hazards.
A pressure differential sampling tube structure is designed. By setting a connecting cylinder on the fan housing, the sampling tube is arranged in the connecting cylinder to avoid direct contact between the sampling tube and the air flow, increasing the sampling area of the sampling tube, and easy cleaning through a removable mounting cover.
It effectively reduces the risk of sampling tube blockage, ensures the accuracy of pressure differential testing, reduces the difficulty of cleaning, and reduces safety risks.
Smart Images
Figure CN222561186U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air pressure sampling structures, and in particular relates to a pressure difference sampling tube structure. Background Art
[0002] The gas turbine casing cooling fan needs to detect the differential pressure on both sides of the impeller to understand the operating status of the fan. The existing method is mainly to detect the differential pressure by pressure sampling. At present, such a dust collector pressure differential sampling port structure is disclosed on the market. Its structural characteristics are: the sampling tube is arranged on the fan housing, one end of the sampling tube is placed in the fan housing, and the other end of the sampling tube is arranged outside the fan housing. After a period of use, dust is easily accumulated at the port of the sampling tube, resulting in inaccurate pressure differential detection, causing misoperation of control components, and easily posing safety hazards. Utility Model Content
[0003] Aiming at the technical problem that the pressure differential sampling port of the existing gas turbine casing cooling fan is easy to be blocked, the utility model provides a pressure differential sampling tube structure, which can reduce the risk of sampling tube blockage and reduce the difficulty of cleaning the sampling tube.
[0004] The utility model provides a pressure differential sampling tube structure, comprising a fan housing, a connecting tube, a sampling tube and a mounting cover, wherein the connecting tube is connected to the fan housing, a mounting hole is provided on the end of the connecting tube away from the fan housing, the sampling tube partially passes through the mounting hole, a sealing disk is connected to the outer wall of the sampling tube, the mounting cover is rotatably arranged on the outer periphery of the sampling tube, and the mounting cover is threadedly connected to the connecting tube, the sealing disk is located between the mounting cover and the end of the connecting tube, the sampling tube is connected to a pressure differential testing device, and an oblique cut is provided at the end of the sampling tube located at the connecting tube.
[0005] Furthermore, the sealing disk is a rubber sheet.
[0006] Furthermore, a hose is connected between the sampling tube and the pressure difference testing device.
[0007] The pressure differential sampling tube structure is provided with a connecting tube on the fan casing. The sampling tube is arranged in the connecting tube, which can avoid direct contact between the sampling tube and the airflow, thereby minimizing the risk of dust deposition on the sampling tube itself and ensuring the pressure detection accuracy of the pressure differential testing device. At the same time, an oblique cut is provided on the end of the sampling tube located at the connecting tube, which can increase the sampling area of the sampling tube and also help reduce the risk of dust deposition clogging the sampling tube. On the other hand, the sampling tube is detachably installed on the connecting tube through the mounting cover, which facilitates the removal of the sampling tube for cleaning and reduces the difficulty of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0009] Figure 1 The figure is a schematic diagram of a differential pressure sampling tube structure. DETAILED DESCRIPTION
[0010] The utility model discloses a pressure differential sampling tube structure, which can reduce the risk of sampling tube blockage and reduce the difficulty of cleaning the sampling tube.
[0011] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, what is described is only a part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0012] See also Figure 1 As shown, the utility model discloses a pressure differential sampling tube structure, including a fan housing 5, a connecting tube 2, a sampling tube 4 and a mounting cover 3, the connecting tube 2 is connected to the fan housing 5, a mounting hole is provided on the end of the connecting tube 2 away from the fan housing 5, the sampling tube 4 partially passes through the mounting hole, the outer wall of the sampling tube 4 is connected with a sealing disk 1, the mounting cover 3 is rotatably arranged on the outer periphery of the sampling tube 4, and the mounting cover 3 is threadedly connected to the connecting tube 2, the sealing disk 1 is located between the mounting cover 3 and the end of the connecting tube 2, the sampling tube 4 is connected with a pressure differential testing device, and the end of the sampling tube 4 located at the connecting tube is provided with an oblique cut 6.
[0013] The sealing disc 1 is a rubber sheet.
[0014] A hose is connected between the sampling tube 4 and the pressure difference testing device.
[0015] The pressure differential sampling tube structure is provided with a connecting tube 2 on the fan housing 5. The sampling tube 4 is arranged in the connecting tube 2, which can avoid direct contact between the sampling tube 4 and the airflow, thereby minimizing the risk of dust deposition on the sampling tube 4 itself, thereby ensuring the pressure detection accuracy of the pressure differential testing device. At the same time, an oblique cut 6 is provided on the end of the sampling tube 4 located at the connecting tube, which can increase the sampling area of the sampling tube 4 and also help reduce the risk of dust deposition and clogging the sampling tube 4. On the other hand, the sampling tube 4 is detachably installed on the connecting tube 2 through the mounting cover 3, which is convenient for taking out the sampling tube 4 for cleaning and reducing the difficulty of cleaning.
[0016] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A pressure differential sampling tube structure, characterized in that: It includes a fan housing, a connecting tube, a sampling tube and a mounting cover, wherein the connecting tube is connected to the fan housing, a mounting hole is provided on the end of the connecting tube away from the fan housing, the sampling tube partially passes through the mounting hole, a sealing disk is connected to the outer wall of the sampling tube, the mounting cover is rotatably arranged on the outer periphery of the sampling tube, and the mounting cover is threadedly connected to the connecting tube, the sealing disk is located between the mounting cover and the end of the connecting tube, the sampling tube is connected to a pressure difference testing device, and an oblique cut is provided at the end of the sampling tube located at the connecting tube.
2. A differential pressure sampling tube structure according to claim 1, characterized in that: The sealing disc is a rubber sheet.
3. A differential pressure sampling tube structure according to claim 1, characterized in that: A hose is connected between the sampling tube and the pressure difference testing device.