CN220869522U

CN220869522U - Temperature and pressure induction assembly

Info

Publication number: CN220869522U
Application number: CN202322443239.3U
Authority: CN
Inventors: 黄思列; 白雷; 冯志远; 何礼彬; 王大书; 付君; 罗录虎; 张丛奇
Original assignee: JIANGXI ZHIFANG NUMERICAL CONTROL POWER CO Ltd; Chengdu Tiandi Zhifang Engine Co ltd; Shanxi Tiandi Coal Mining Machinery Co Ltd
Current assignee: JIANGXI ZHIFANG NUMERICAL CONTROL POWER CO Ltd; Chengdu Tiandi Zhifang Engine Co ltd; Shanxi Tiandi Coal Mining Machinery Co Ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-30
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a temperature and pressure sensing assembly, which comprises a shell, a junction box, a temperature sensing element, a pressure sensing element and a wire harness, wherein the junction box is arranged on the shell: the shell is a rod body which is vertically arranged, an installation cavity which penetrates through the upper end of the shell is formed in the shell, a partition sheet is arranged in the installation cavity and divides the installation cavity into an upper groove chamber and a lower chamber, and an air inlet hole which is communicated with the lower chamber is formed in the lower end of the shell; the junction box is arranged at the upper end of the shell, the inside of the junction box is provided with a containing cavity, the upper end of the shell is communicated with the containing cavity, and the junction box is provided with a wire inlet hole communicated with the containing cavity; the temperature sensing element is arranged in the upper groove chamber; the pressure sensing element is arranged in the accommodating cavity; one end of the wire harness penetrates into the accommodating cavity and the upper groove chamber through the wire inlet hole and is electrically connected with the temperature sensing element and the pressure sensing element, the structure is simple, the temperature sensing element and the pressure sensing element are integrated in a carrier formed by the shell and the junction box, and the installation is convenient.

Description

Temperature and pressure induction assembly

Technical Field

The utility model belongs to the field of inductors, and particularly relates to a temperature and pressure induction assembly.

Background

For explosion-proof engines, intake air temperature and intake air pressure are two indispensable parameters, which are important factors affecting the combustion efficiency and emission index of diesel engines. In most cases, the intake air pressure and the intake air temperature are two relatively independent sensors. The automobile-used air inlet pressure sensor and air inlet temperature sensor generally install on engine intake manifold, and it needs two mounting sites, and the structure is comparatively complicated, of course, and at present document number is CN211230631U "an explosion-proof diesel engine is with air inlet pressure temperature sensor", but its inside temperature measurement load cell is difficult to maintain when damaging, through certain component damage, then need change whole sensor, its maintenance cost is high.

Disclosure of utility model

In order to solve the technical problems, the utility model aims to provide the temperature and pressure sensing assembly which is simple in structure, convenient to install and good in integration.

In order to achieve the above object, the technical scheme of the present utility model is as follows: a temperature and pressure sensing assembly comprising:

The shell is a rod body which is vertically arranged, a mounting cavity penetrating through the upper end of the shell is formed in the shell, a partition sheet is arranged in the mounting cavity, the partition sheet partitions the mounting cavity into an upper groove chamber and a lower chamber, and an air inlet hole communicated with the lower chamber is formed in the lower end of the shell;

The junction box is arranged at the upper end of the shell, a containing cavity is formed in the junction box, the upper end of the shell is communicated with the containing cavity, and a wire inlet hole communicated with the containing cavity is formed in the junction box;

The temperature sensing element is arranged in the upper groove chamber;

A pressure sensing element disposed within the receiving chamber; and

And one end of the wire harness penetrates into the accommodating cavity and the upper groove chamber through the wire inlet hole and is electrically connected with the temperature sensing element and the pressure sensing element.

The beneficial effects of the technical scheme are that: through setting up terminal box and casing to connect the two and form a carrier that is used for holding temperature sensing element and pressure sensing element, and set up the pencil that passes it on the terminal box, and the one end and the temperature sensing element of pencil are all electrically connected with pressure sensing element, make whole temperature and pressure sensing assembly form an entirety like this, and set up the inlet port at the casing lower extreme, make the gaseous ability in the lower chamber exchange in time and flow like this, thereby make the sensitivity of its response higher.

In the above technical scheme, the junction box comprises a box body and a box cover, wherein the box body is in a groove shape, a notch of the box body faces upwards, the upper end of the shell is connected with the middle of the lower end of the box body and is communicated with the inside of the box body, the box cover sealing cover is arranged at the notch of the box body, the wire inlet hole is formed in the side wall of the shell, and a space formed by encircling the box body and the box cover forms the accommodating cavity.

The beneficial effects of the technical scheme are that: the structure is simple, and the disassembly and the assembly are convenient.

In the technical scheme, a faucet is arranged in the middle of the lower end of the box body, the faucet is communicated with the shell, an inserting part is arranged at the upper end of the shell, and the upper end of the shell is inserted in the faucet in a sealing mode.

The beneficial effects of the technical scheme are that: so make the detachable sealing connection between box body and the casing, be favorable to improving whole temperature and pressure induction assembly's maintainability like this.

In the technical scheme, the box cover is a groove-shaped cover, the notch of the groove-shaped cover faces downwards, and the groove-shaped cover is in sealing and buckling connection with the upper end of the box body.

The beneficial effects of the technical scheme are that: the structure is simple.

According to the technical scheme, the outer side wall of the box body is convexly provided with the hanging lugs, and the connecting holes are formed in the hanging lugs.

The beneficial effects of the technical scheme are that: so that the whole temperature and pressure sensing assembly is convenient to install on the air inlet channel.

According to the technical scheme, the wire harness is sleeved with the compression nut, and the thin end of the compression nut is embedded in the wire inlet hole.

The beneficial effects of the technical scheme are that: so that the wire inlet hole can be tightly pressed by the nut for sealing treatment.

Still include insulating column and terminal among the above-mentioned technical scheme, insulating column vertical setting, and its embedding to go up in the cell chamber, the terminal is located hold chamber diapire department, and the lid is established go up the notch department of cell chamber, just the upper end of insulating column with the lower extreme of terminal is connected, pressure sensing element presss from both sides and establishes between terminal and the insulating column, temperature sensing element is located the below of insulating column, temperature sensing element's lead wire passes the insulating column and is connected with the terminal electricity, pressure sensing element and pencil all with the terminal electricity is connected.

The beneficial effects of the technical scheme are that: the structure is simple, so that the pressure in the lower chamber is conducted into the upper groove chamber through the partition sheet and finally conducted to the pressure sensing element through the insulating column, the pressure sensing element is used for measuring the air inlet pressure, and the temperature sensing element in the upper groove chamber is used for directly measuring the real-time temperature of the partition sheet to be equivalent to measuring the air inlet temperature.

In the technical scheme, the lower end of the partition sheet protrudes downwards to form a concave spherical surface shape.

The beneficial effects of the technical scheme are that: this increases the contact area of the separator with the air flow, thus making its measurement sensitivity higher.

In the technical scheme, a plurality of air inlets are formed, and the air inlets are annularly arranged on the side wall of the lower end of the shell at intervals.

The beneficial effects of the technical scheme are that: so that the air flow exchange effect between the lower chamber and the outside is better.

In the technical scheme, the shell, the junction box and the compression nut are all made of stainless steel materials.

The beneficial effects of the technical scheme are that: the corrosion resistance is good.

Drawings

FIG. 1 is a cross-sectional view of a temperature and pressure sensing assembly according to an embodiment of the present utility model;

FIG. 2 is a side view of a temperature and pressure sensing assembly according to an embodiment of the present utility model;

FIG. 3 is a top view of a temperature and pressure sensing assembly according to an embodiment of the present utility model;

Fig. 4 is a schematic structural diagram of the plugging of the box body and the shell according to the embodiment of the utility model.

In the figure: 1a shell, 11 a mounting cavity, 111 an upper groove chamber, 112a lower cavity, 12a partition plate, 13 an air inlet, 14 a plug-in part, 2a junction box, 21 a containing cavity, 22 a box body, 221 a wire inlet hole, 222 a socket, 223 a hanging lug, 224 a connecting cavity, 225 a blind hole, 23 a box cover, 231 a protruding part, 3a temperature sensing element, 31 a lead wire, 4 a pressure sensing element, 5 a wire harness, 51 a compression nut, 6 an insulation column, 7 a binding post, 71 a hole and 8 screws.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

As shown in fig. 1 to 3, the present embodiment provides a temperature and pressure sensing assembly including a housing 1, a junction box 2, a temperature sensing element 3, a pressure sensing element 4, and a wire harness 5: the shell 1 is a vertically arranged rod body, a mounting cavity 11 penetrating through the upper end of the shell 1 is formed in the shell 1, a partition piece 12 is arranged in the mounting cavity 11, the partition piece 12 divides the mounting cavity 11 into an upper groove chamber 111 and a lower chamber 112, and an air inlet hole 13 communicated with the lower chamber 112 is formed in the lower end of the shell 1; the junction box 2 is arranged at the upper end of the shell 1, a containing cavity 21 is formed in the junction box 2, the upper end of the shell 1 is communicated with the containing cavity 21, and a wire inlet hole 221 communicated with the containing cavity 21 is formed in the junction box 2; the temperature sensing element 3 is arranged in the upper groove chamber 111; the pressure sensing element 4 is arranged in the receiving chamber 21; one end of the wire harness 5 penetrates into the accommodating cavity 21 and the upper groove chamber 111 through the wire inlet hole 221 and is electrically connected with the temperature sensing element 3 and the pressure sensing element 4, a junction box and a shell are arranged and are connected to form a carrier for accommodating the temperature sensing element and the pressure sensing element, the wire harness penetrating through the junction box is arranged on the junction box, one end of the wire harness is electrically connected with the temperature sensing element and the pressure sensing element, the whole temperature and pressure sensing assembly is integrated, an air inlet hole is formed in the lower end of the shell, and therefore air in the lower cavity can be exchanged and flows in time, and the sensing sensitivity of the air inlet hole is higher.

In the above technical scheme, the junction box 2 comprises a box body 22 and a box cover 23, the box body 22 is in a groove shape, the notch of the box body is upward, the upper end of the shell 1 is connected with the middle part of the lower end of the box body 22, the box body 22 is internally communicated with the junction box, the box cover 23 is sealed to be arranged at the notch of the box body 22, the wire inlet hole 221 is formed in the side wall of the shell 1, and the space formed by encircling the box body 22 and the box cover 23 is formed into the accommodating cavity 21, so that the junction box is simple in structure and convenient to assemble and disassemble.

As shown in fig. 4, in the above technical solution, a socket 222 is disposed in the middle of the lower end of the box 22, and the socket 222 is in communication with the interior of the housing 1, an inserting portion 14 is disposed at the upper end of the housing 1, and the upper end of the housing 1 is inserted in the socket 222 in a sealing manner, so that the box is detachably connected with the housing in a sealing manner, which is beneficial to improving maintainability of the whole temperature and pressure sensing assembly, and a sealing gasket can be disposed at the butt joint of the inserting portion and the socket for sealing treatment.

In the above technical solution, the lid 23 is a trough-shaped lid, with a notch facing downward, and is fastened to the upper end of the box 22 in a sealing manner (i.e. the notch of the box extends into the trough of the lid, and the two are fastened, preferably, a sealing gasket is disposed between the two to perform sealing treatment), so that the structure is simple.

The arrangement of the sealing gasket belongs to the prior art and is not described in detail herein.

The outer side wall of the box body 22 is convexly provided with a hanging lug 223, and a connecting hole 224 is arranged at the hanging lug 223, so that the whole temperature and pressure sensing assembly is convenient to install on an air inlet channel. The connecting holes vertically penetrate through the hanging lugs, and the number of the hanging lugs is set according to the requirement.

In the above technical solution, a gland nut 51 is sleeved on the wire harness 5 (the wire harness 5 is sealed to pass through an inner hole of the gland nut), and a thin end of the gland nut 51 is embedded in the wire inlet 221, so that the gland nut can be sealed at the wire inlet.

The technical scheme includes that the insulation column 6 and the binding post 7 are further included, the insulation column 6 is vertically arranged and is embedded into the upper groove chamber 111, the binding post 7 is located at the bottom wall of the accommodating cavity 21 and covers the notch of the upper groove chamber 111, the upper end of the insulation column 6 is connected with the lower end of the binding post 7, the pressure sensing element 4 is clamped between the binding post 7 and the insulation column 6, the temperature sensing element 3 is located below the insulation column 6, the lead wire 31 of the temperature sensing element 3 penetrates through the insulation column 6 and is electrically connected with the binding post 7, the pressure sensing element 4 and the wiring harness 5 are electrically connected with the binding post 7, the structure is simple, pressure in the lower cavity is conducted into the upper groove chamber through the partition plate and is finally conducted to the pressure sensing element through the insulation column, so that air inlet pressure is measured by the pressure sensing element, and the temperature sensing element in the upper groove chamber directly measures the real-time temperature of the partition plate to be equivalent to air inlet temperature measurement.

In the above technical solution, the lower end of the partition sheet 12 protrudes downward to form a concave spherical surface, so that the contact area between the partition sheet and the air flow can be increased, and the measurement sensitivity is higher.

In the above technical scheme, the air inlets 13 are provided in plurality, and the plurality of air inlets 13 are circumferentially arranged on the side wall of the lower end of the housing 1 at intervals, so that the air flow exchange effect between the lower chamber and the outside is better.

In the above technical solution, six air inlets 13 are provided, and the air inlets 13 are vertical bar-shaped holes, which has a simple structure.

In the above technical solution, the housing 1, the junction box 2 and the compression nut 51 are all made of stainless steel materials, and have good corrosion resistance.

Wherein, the temperature sensing element 3 can be PT100 platinum thermal resistor, and has high sensitivity and accuracy.

The temperature sensing element can be attached to the concave part of the partition plate at the lower end of the upper groove chamber, and the partition plate can be a thinner steel sheet (the thickness is equal to that of the tin plate).

The insulating column can be a plastic rod, a wood rod, a silica gel rod, a latex rod or the like.

The middle part of the bottom of the box cover groove is provided with a protruding part 231, and when the box cover is required to be detached from the box body, the protruding part 231 can be clamped by using the tiger mouth pliers and the box cover can be pulled out from the box body, so that the box body and the box cover can be detached.

The wall thickness of the housing is preferably about 1mm, and the length of the housing can be set as required.

The terminal may be disposed in the box body by mounting a screw 8 on the inner bottom wall of the box body (the inner bottom wall of the box body may be concavely provided with a blind hole 225 with an inner wall provided with an internal thread, the edge of the terminal 7 is provided with a hole 71 through which the screw passes, and the screw 8 is finally screwed with the blind hole 225, so as to fix the terminal on the inner bottom wall of the box body.

In this embodiment, if the temperature sensing element or the pressure sensing element in the temperature and pressure sensing assembly is damaged, the box cover is only required to be opened, the temperature sensing element or the pressure sensing element is replaced after the binding post is removed, and then the temperature and pressure sensing assembly is reassembled, so that the maintenance is convenient, and the maintenance cost is low.

The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way; those skilled in the art will readily appreciate that the present utility model may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present utility model are possible in light of the above teachings, without departing from the scope of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the present utility model.

Claims

1. A temperature and pressure sensing assembly, comprising:

The device comprises a shell (1) and a lower cavity (112), wherein the shell (1) is a rod body which is vertically arranged, a mounting cavity (11) penetrating through the upper end of the shell (1) is formed in the shell (1), a partition piece (12) is arranged in the mounting cavity (11), the partition piece (12) divides the mounting cavity (11) into an upper groove chamber (111) and the lower cavity (112), and an air inlet hole (13) communicated with the lower cavity (112) is formed in the lower end of the shell (1);

the junction box (2) is arranged at the upper end of the shell (1), a containing cavity (21) is formed in the junction box (2), the upper end of the shell (1) is communicated with the containing cavity (21), and a wire inlet hole (221) communicated with the containing cavity (21) is formed in the junction box (2);

A temperature sensing element (3) disposed in the upper chamber (111);

A pressure sensing element (4) disposed within the receiving chamber (21); and

And one end of the wire harness (5) penetrates into the accommodating cavity (21) and the upper groove chamber (111) through the wire inlet hole (221) and is electrically connected with the temperature sensing element (3) and the pressure sensing element (4).

2. The temperature and pressure sensing assembly according to claim 1, wherein the junction box (2) comprises a box body (22) and a box cover (23), the box body (22) is in a groove shape, a notch of the box body faces upwards, the upper end of the shell (1) is connected with the middle part of the lower end of the box body (22) and is communicated with the interior of the box body (22), the box cover (23) is sealed and arranged at the notch of the box body (22), the wire inlet hole (221) is formed in the side wall of the shell (1), and a space formed by encircling the box body (22) and the box cover (23) forms the accommodating cavity (21).

3. Temperature and pressure sensing assembly according to claim 2, characterized in that a socket (222) is provided in the middle of the lower end of the box body (22), and the socket (222) is communicated with the inside of the shell (1), a plug-in part (14) is provided at the upper end of the shell (1), and the upper end of the shell (1) is plugged in the socket (222) in a sealing way.

4. A temperature and pressure sensing assembly according to claim 2, wherein the lid (23) is a trough-shaped lid with its slot facing downwards and is sealingly fastened to the upper end of the box body (22).

5. Temperature and pressure sensing assembly according to claim 2, characterized in that the outer side wall of the box body (22) is provided with a hanging lug (223) in a protruding manner, and the hanging lug (223) is provided with a connecting hole (224).

6. Temperature and pressure sensing assembly according to claim 2, characterized in that the wire harness (5) is sleeved with a gland nut (51), and the thin end of the gland nut (51) is embedded in the wire inlet hole (221).

7. The temperature and pressure sensing assembly according to any one of claims 1-6, further comprising an insulation column (6) and a binding post (7), wherein the insulation column (6) is vertically arranged and embedded into the upper groove chamber (111), the binding post (7) is located at the bottom wall of the accommodating cavity (21) and covers the notch of the upper groove chamber (111), the upper end of the insulation column (6) is connected with the lower end of the binding post (7), the pressure sensing element (4) is clamped between the binding post (7) and the insulation column (6), the temperature sensing element (3) is located below the insulation column (6), a lead wire of the temperature sensing element (3) penetrates through the insulation column (6) and is electrically connected with the binding post (7), and both the pressure sensing element (4) and the wire harness (5) are electrically connected with the binding post (7).

8. A temperature and pressure sensing assembly according to any one of claims 1-6, wherein the lower end of the partition (12) is downwardly convex to form a concave spherical shape.

9. A temperature and pressure sensing assembly according to any one of claims 1-6, wherein a plurality of air inlet holes (13) are provided, and a plurality of air inlet holes (13) are circumferentially spaced on a side wall of the lower end of the housing (1).

10. Temperature and pressure sensing assembly according to claim 6, characterized in that the housing (1), junction box (2) and compression nut (51) are all stainless steel pieces.