Cylinder temperature sensor

Abstract

The utility model discloses a cylinder temperature sensor which comprises a gas engine cylinder cover and a sensor probe assembly, the top of the sensor probe assembly is provided with a sealing mechanism, and the bottom of the sensor probe assembly is welded with a protection mechanism. The sensor probe assembly comprises a shielding wire, a double-layer heat shrink tube, a teflon shielding wire, a white label and an anti-folding spring, the teflon shielding wire and the shielding wire are connected into the double-layer heat shrink tube, and the shielding wire extends to the outside of the teflon shielding wire; through the structural design of the sealing mechanism, the protection mechanism and the sensor probe assembly, the sealing performance of the sensor can be effectively improved, the working stability and reliability of the cylinder temperature sensor in the later period are improved, and through the structural design, when the cylinder temperature is abnormal in the later period, the fault or abnormal operation state of a generator set can be rapidly fed back; therefore, the debugging personnel can be reminded to modify parameters or check the generator.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder temperature sensors, in particular to a cylinder temperature sensor. Background Art

[0002] The cylinder temperature sensor is a device used to measure the temperature inside the generator cylinder. The cylinder temperature sensor is usually an armored thermocouple type temperature sensor, which has a wide temperature operating range, reliability, accuracy, simplicity and sensitivity; the most important thing is that it is small in size and can measure the temperature in a small space; its structure includes high-temperature compensation wire, spring sheath, movable ferrule thread, copper clip, and sealing copper gasket.

[0003] However, this structure has low stability and reliability, and its sealing ability is not strong. Air leakage often occurs, causing damage to the cylinder temperature sensor, which can cause serious shutdown of the entire generator or even damage the generator. In addition, the use conditions are not flexible enough. Once the movable ferrule thread and the copper clip are tightened, they cannot be applied to other cylinder units. If the sensor is not in the correct position due to some factors but the movable ferrule thread and the copper clip are tightened, it cannot be used anymore, which is very wasteful. Utility Model Content

[0004] The utility model aims to provide a cylinder temperature sensor. The existing cylinder temperature sensor has poor sealing performance of the internal structure, which reduces the stability and reliability during use.

[0005] To achieve the above-mentioned purpose, a cylinder temperature sensor is provided, including a gas engine cylinder head and a sensor probe assembly, wherein a sealing mechanism is provided on the top of the sensor probe assembly, and a protective mechanism is welded on the bottom of the sensor probe assembly, and the sensor probe assembly includes a shielded wire, a double-layer heat shrink tube, a polytetrafluoroethylene shielded wire, a white label and an anti-bending spring, wherein a polytetrafluoroethylene shielded wire and a shielded wire are respectively connected to the inside of the double-layer heat shrink tube, and the shielded wire extends to the outside of the polytetrafluoroethylene shielded wire, a white label is provided on the outside of the polytetrafluoroethylene shielded wire, and an anti-bending spring cooperating with the polytetrafluoroethylene shielded wire and the shielded wire is provided on one side of the outside of the polytetrafluoroethylene shielded wire, so as to facilitate the sealing performance and stability performance of the cylinder temperature sensor in later use.

[0006] According to the cylinder temperature sensor, the sealing mechanism includes nut one, nut two, sealing copper gasket one, nut three and sealing copper gasket two. The sealing copper gasket two is located at the top of the sensor probe assembly. The top of the sealing copper gasket two is provided with nut three which cooperates with the sensor probe assembly. The top of the nut three is provided with sealing copper gasket one. The top of the sealing copper gasket one is respectively provided with nut two and nut one which cooperate with nut three. The end face seal composed of multiple nuts makes the sensor use conditions more flexible and not easy to be damaged.

[0007] According to the cylinder temperature sensor, the protection mechanism includes welding point one, protective cover one, welding point two and protective cover two. The protective cover one is welded to the bottom of the sensor probe assembly through welding point one, and the side of the protective cover one away from the sensor probe assembly is welded to the protective cover two through welding point two, which can effectively prevent the sensor from leaking in the later stage.

[0008] According to the cylinder temperature sensor, the welding angle between the sensor probe assembly and the protection mechanism is bent at thirty degrees, which is convenient for later installation and use and ensures the later sealing performance.

[0009] According to the cylinder temperature sensor, the nut one, the nut two and the nut three are installed and used using nuts with models SW16 and SW27 respectively, which facilitates accurate nut modeling and improves subsequent sealing performance.

[0010] According to the cylinder temperature sensor, the diameters of the protective cover 1 and the protective cover 2 are both 4 millimeters, which facilitates the subsequent use of the protective cover with the sensor.

[0011] The above scheme has the beneficial effects: through the structural design of the sealing mechanism, the protection mechanism and the sensor probe assembly, the sealing performance of the sensor can be effectively increased, the stability and reliability of the cylinder temperature sensor in the later stage are improved, and through the structural design, when the cylinder temperature is abnormal in the later stage, the fault or abnormal operation status of the generator set can be quickly fed back, so as to remind the debugging personnel to modify the parameters or check the generator.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a schematic diagram of the installation of the cylinder temperature sensor of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the sealing mechanism of the cylinder temperature sensor of the utility model;

[0016] Figure 3 The figure is a schematic diagram of the structure of the sensing probe assembly of the cylinder temperature sensor of the utility model.

[0017] Legend:

[0018] 1. Gas engine cylinder head; 2. Sealing mechanism; 200. Nut 1; 201. Nut 2; 202. Sealing copper gasket 1; 203. Nut 3; 204. Sealing copper gasket 2; 3. Protective mechanism; 300. Welding point 1; 301. Protective cover 1; 302. Welding point 2; 303. Protective cover 2; 4. Sensor probe assembly; 400. Shielded wire; 401. Double-layer heat shrink tube; 402. PTFE shielded wire; 403. White label; 404. Anti-bend spring. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] Reference Figure 1-3 The cylinder temperature sensor of the utility model embodiment includes a gas engine cylinder head 1 and a sensor probe assembly 4, a sealing mechanism 2 is provided on the top of the sensor probe assembly 4, a protection mechanism 3 is welded on the bottom of the sensor probe assembly 4, the sensor probe assembly 4 includes a shielding wire 400, a double-layer heat shrink tube 401, a polytetrafluoroethylene shielding wire 402, a white label 403 and an anti-bending spring 404, the inside of the double-layer heat shrink tube 401 is respectively connected with a polytetrafluoroethylene shielding wire 402 and a shielding wire 400, and the shielding wire 400 extends to the outside of the polytetrafluoroethylene shielding wire 402, a white label 403 is provided on the outside of the polytetrafluoroethylene shielding wire 402, and an anti-bending spring 404 that cooperates with the polytetrafluoroethylene shielding wire 402 and the shielding wire 400 is provided on one side of the outside of the polytetrafluoroethylene shielding wire 402.

[0021] The sealing mechanism 2 includes nut 1 200, nut 201, sealing copper gasket 1 202, nut 3 203 and sealing copper gasket 2 204. The sealing copper gasket 2 204 is located at the top of the sensor probe assembly 4. The top of the sealing copper gasket 204 is provided with nut 3 203 which cooperates with the sensor probe assembly 4. The top of the nut 3 203 is provided with sealing copper gasket 1 202. The top of the sealing copper gasket 1 202 is respectively provided with nut 201 and nut 1 200 which cooperate with nut 3 203.

[0022] The protection mechanism 3 includes welding point 1 300, protection cover 1 301, welding point 2 302 and protection cover 2 303. The protection cover 1 301 is welded to the bottom of the sensor probe assembly 4 through welding point 1 300, and the side of the protection cover 1 301 away from the sensor probe assembly 4 is welded to the protection cover 2 303 through welding point 2 302.

[0023] The welding angle between the sensor probe assembly 4 and the protection mechanism 3 is thirty degrees.

[0024] Nut one 200, nut two 201 and nut three 203 are installed and used using nuts with models of SW16 and SW27 respectively.

[0025] The diameters of the protective cover 1 301 and the protective cover 2 303 are both 4 millimeters.

[0026] Working principle: When in use, the operator can directly take the sensor probe assembly 4 and its above components and insert them into the cylinder unit, and they need to be bent at an angle of 30 degrees. In order to be completely sealed, the protection mechanism 3 is welded at the bottom of the sensor probe assembly 4, and the protection mechanism 3 and the nut are also welded. The anti-leakage function of the sensor can be achieved through welding;

[0027] Moreover, a separate high-temperature compensation wire or spring protective cover is prone to breakage. The shielded wire 400, double-layer heat shrink tube 401 and polytetrafluoroethylene shielded wire 402 are designed inside the sensor probe assembly 4. The shielded wire 400 and polytetrafluoroethylene shielded wire 402 can be protected by the double-layer heat shrink tube 401. At the same time, the existing spring sheath can be changed to an anti-bending spring 404, which can effectively improve the reliability of the wire in the later use. Compared with the installation of a separate high-temperature compensation wire or spring protective cover, it is not easy to cause problems such as wire breakage leading to abnormal operation of the generator.

[0028] Finally, through the structural design of the sealing mechanism 2, the sealing performance of the sensor probe assembly 4 after installation can be achieved, and through the mutual cooperation of nut 1 200, nut 201, sealing copper gasket 1 202, nut 3 203 and sealing copper gasket 204, the radial seal composed of the existing nut, copper clip and sealing gasket can be changed to an end face seal composed of multiple nuts and sealing copper gaskets, so that the cylinder temperature sensor has more flexible use conditions, is not easy to be damaged, will not be scrapped due to the sensor being stuck due to misoperation of the installer, and has better sealing performance.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Cylinder temperature sensor, including: A gas engine cylinder head (1) and a sensor probe assembly (4), characterized in that a sealing mechanism (2) is provided on the top of the sensor probe assembly (4), a protection mechanism (3) is welded on the bottom of the sensor probe assembly (4), the sensor probe assembly (4) comprises a shielded wire (400), a double-layer heat shrink tube (401), a polytetrafluoroethylene shielded wire (402), a white label (403) and an anti-bending spring (404), the polytetrafluoroethylene shielded wire (402) and the shielded wire (400) are respectively connected to the inside of the double-layer heat shrink tube (401), and the shielded wire (400) extends to the outside of the polytetrafluoroethylene shielded wire (402), the outside of the polytetrafluoroethylene shielded wire (402) is provided with a white label (403), and one side of the outside of the polytetrafluoroethylene shielded wire (402) is provided with an anti-bending spring (404) that cooperates with the polytetrafluoroethylene shielded wire (402) and the shielded wire (400).

2. The cylinder temperature sensor according to claim 1, characterized in that: The sealing mechanism (2) comprises nut one (200), nut two (201), sealing copper gasket one (202), nut three (203) and sealing copper gasket two (204); the sealing copper gasket two (204) is located at the top of the sensor probe assembly (4); the top of the sealing copper gasket two (204) is provided with nut three (203) which cooperates with the sensor probe assembly (4); the top of the nut three (203) is provided with sealing copper gasket one (202); the top of the sealing copper gasket one (202) is respectively provided with nut two (201) and nut one (200) which cooperate with nut three (203).

3. The cylinder temperature sensor according to claim 1, characterized in that: The protection mechanism (3) comprises a welding point 1 (300), a protection cover 1 (301), a welding point 2 (302) and a protection cover 2 (303); the protection cover 1 (301) is welded to the bottom of the sensor probe assembly (4) via the welding point 1 (300); and the side of the protection cover 1 (301) away from the sensor probe assembly (4) is welded to the protection cover 2 (303) via the welding point 2 (302).

4. The cylinder temperature sensor according to claim 1, characterized in that: The welding angle between the sensor probe assembly (4) and the protection mechanism (3) is thirty degrees.

5. The cylinder temperature sensor according to claim 2, characterized in that: The nut one (200), the nut two (201) and the nut three (203) are respectively installed and used using nuts with models of SW16 and SW27.

6. The cylinder temperature sensor according to claim 3, characterized in that: The diameters of the protective sleeve 1 (301) and the protective sleeve 2 (303) are both four millimeters.

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