Cold-resistant and heat-resistant gas meter capable of adapting to extreme temperature environment

Abstract

The utility model provides a cold-resistant and heat-resistant gas meter capable of adapting to an extreme temperature environment, which relates to the technical field of gas metering and comprises a gas meter, a group of gas pipes are mounted above the gas meter, a rear protective shell is mounted on the rear side of the gas meter, and a front protective shell is mounted on the front side of the gas meter. A set of bolt connecting blocks are arranged on the outer side face of the rear protective shell, and a vertical locking pin is installed on the upper portion of the front protective shell. Through the arrangement of the rear protective shell and the front protective shell, and the heat conduction design of the heat absorption block and the ventilation groove, the gas meter can stably work at low temperature; in addition, at high temperature, the rear protective shell and the front protective shell can isolate external heat, and at low temperature, heat loss is reduced through blocking of the baffle and the heat preservation layer together, it is ensured that core components of the gas meter are not affected by the extreme temperature, and the problem that a traditional gas meter is high in failure rate in the extreme temperature environment is solved.

Description

Technical Field

[0001] This utility model relates to the field of gas metering technology, and in particular to a cold- and heat-resistant gas meter that can adapt to extreme temperature environments. Background Technology

[0002] In the field of gas metering, gas meters are key metering devices, and their operational stability directly affects the safety and accuracy of gas supply. However, existing gas meters have many technical drawbacks in extreme temperature environments, such as temperatures below -20 degrees Celsius in winter in frigid regions and above 40 degrees Celsius in summer in scorching regions. Specific defects are as follows:

[0003] In high-temperature environments, the internal electronic components of traditional gas meters are prone to performance degradation due to poor heat dissipation, which may even lead to metering errors or shutdowns, causing gas meter malfunctions. In low-temperature environments, the casing has insufficient insulation, and the internal mechanical parts are prone to embrittlement or freezing due to low temperatures, resulting in poor gas flow and gas meter malfunctions, which may even cause gas supply interruptions in severe cases.

[0004] Traditional gas meters often use a single-layer rubber sealing ring at the connection between the gas meter and the gas pipe. This ring is prone to deformation and hardening under extreme temperatures. At high temperatures, the elasticity of the sealing ring decreases, increasing the risk of gas leakage. At low temperatures, the sealing ring shrinks, widening the gaps and allowing dust and moisture to seep in, accelerating the corrosion of internal components and shortening the service life of the equipment. Utility Model Content

[0005] This utility model relates to a cold- and heat-resistant gas meter that can adapt to extreme temperature environments. In high-temperature environments, the baffle is slid upward to the highest position and fixed with locking bolts; the one-way valve automatically opens as the internal temperature rises, achieving passive heat dissipation; the gas meter reading can be observed through the transparent cover without opening the protective structure; in low-temperature environments, the baffle is slid downward to block the drain sleeve, ensuring the gas meter's heat preservation effect; if the gas meter needs to be inspected or operated, the locking pin is pulled upward to open the cover, and it is immediately closed and locked after the operation is completed.

[0006] This utility model provides a cold- and heat-resistant gas meter that can adapt to extreme temperature environments. Specifically, it includes: a gas meter, a set of gas pipes installed at the top of the gas meter, a rear protective housing installed at the rear of the gas meter, a front protective housing installed at the front of the gas meter, a set of bolt connecting blocks provided on the outer side of the rear protective housing, a vertical locking pin installed at the top of the front protective housing, a flow-draining sleeve provided at the rear of the rear protective housing, the flow-draining sleeve communicating with the interior of the rear protective housing, a one-way valve installed at the inner side of the flow-draining sleeve, and a baffle installed at the rear of the flow-draining sleeve.

[0007] Furthermore, a sliding groove is provided on each side of the drainage sleeve. The sliding groove has a dovetail groove structure. The two sides of the baffle extend into the interior of the sliding groove, and a locking bolt is installed at the bottom of the baffle.

[0008] Furthermore, a set of heat-absorbing blocks is provided on the inner side of the rear protective shell and the front protective shell respectively. The heat-absorbing blocks are in contact with the outer side of the gas meter. A ventilation slot is opened at the upper and lower positions of the heat-absorbing blocks respectively. The ventilation slot has a U-shaped structure.

[0009] Furthermore, two symmetrically distributed sliding grooves are provided on the front side of the front protective shell. The sliding grooves have a dovetail groove structure, and a cover plate is installed between the two sliding grooves.

[0010] Furthermore, a positioning plate is provided at the upper position of the front protective housing. The positioning plate has an L-shaped structure and a sliding hole is opened at the upper position of the positioning plate. The locking pin passes through the interior of the sliding hole.

[0011] Furthermore, a locking groove corresponding to the locking pin is opened on both sides of the upper part of the cover plate. A support ring is provided on the outer side of the locking pin, and a support spring is installed above the support ring. The bottom of the locking pin extends into the interior of the locking groove.

[0012] Furthermore, a set of stabilizing pins is provided on each side of the front protective housing, and a mounting hole is opened on each side of the rear protective housing, with the stabilizing pins passing through the interior of the mounting hole.

[0013] Furthermore, a support spring is installed on the outer side of the stabilizing pin, an annular groove is formed on one side of the stabilizing pin, and a retaining ring is installed on the inner side of the annular groove.

[0014] Furthermore, two symmetrically distributed sealing gaskets are installed between the rear protective shell and the front protective shell. The sidewalls of the sealing gaskets are respectively attached to the gas pipe, the rear protective shell, and the front protective shell. The rear protective shell, the drain sleeve, the front protective shell, the positioning plate, the cover plate, the stabilizing pin, and the sealing gasket cooperate with each other to form a protective structure.

[0015] This utility model provides a cold-resistant and heat-resistant gas meter that can adapt to extreme temperature environments, and has the following beneficial effects:

[0016] This utility model is provided with a rear protective shell, a drain sleeve, a front protective shell, a positioning plate, a cover plate, a stabilizing pin, and a sealing gasket, which work together to form a protective structure for the gas meter, enabling the gas meter to withstand cold and heat in extreme temperature environments.

[0017] Specifically, the gas meter can operate stably at low temperatures by using the inner heat insulation layer and outer heat-conducting coating of the rear and front protective shells, combined with the heat conduction design of the heat absorption block and ventilation slot. At high temperatures, the one-way valve and baffle work together with the rear and front protective shells to ensure that the gas meter can dissipate heat fully. In addition, the rear and front protective shells can isolate external heat. At low temperatures, the baffle sealing and the heat insulation layer work together to reduce heat loss, ensuring that the core components of the gas meter are not affected by extreme temperatures, thus solving the problem of high failure rate of traditional gas meters in extreme temperature environments.

[0018] Specifically, the front and rear protective shells are tightly fitted together by the spring preload of the stabilizing pins, and together with the high-temperature and low-temperature resistant sealing gaskets, they can effectively fill the gap with the gas pipe, prevent dust and moisture from seeping in and gas from leaking. They also maintain good elasticity and sealing performance even under extreme temperatures, effectively reducing safety hazards. At the same time, the locking pins of the cover plate have an automatic locking design to prevent external forces or severe weather from causing the protection to fail, further enhancing safety.

[0019] Specifically, the transparent cover allows readings without opening the protective structure, and the sliding design, combined with the locking pin for quick unlocking, eliminates the need to completely disassemble the protective housing when operating the buttons. The front and rear protective housings can be quickly assembled using stabilizing pins, and individual components can be replaced independently if damaged. This significantly reduces the maintenance time of the gas meter and substantially lowers the installation and maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0022] In the attached diagram:

[0023] Figure 1 A schematic diagram of the gas meter and protective structure of this utility model after assembly is shown.

[0024] Figure 2 This utility model illustrates Figure 1 A schematic diagram of the axonal structure from the rear view;

[0025] Figure 3 This invention provides a schematic diagram of the axial structure of the cover plate after it is opened.

[0026] Figure 4 A schematic diagram of the gas meter and the disassembled protective structure of this utility model is shown on the axial side.

[0027] Figure 5 This utility model illustrates Figure 4 A schematic diagram of the front-view axonal structure;

[0028] Figure 6 A schematic diagram of the axial side structure of the protective structure of this utility model is shown in cross-section.

[0029] Figure 7 A partial axial side view of the gas meter and protective structure of this utility model is shown;

[0030] Figure 8 This utility model illustrates Figure 3 Enlarged structural diagram of point A after the positioning plate is cut open;

[0031] Figure 9 This utility model illustrates Figure 6 A magnified structural diagram at point B.

[0032] List of reference numerals

[0033] 1. Gas meter; 101. Gas pipe;

[0034] 2. Protective structure; 201. Rear protective shell; 20101. Drainage sleeve; 202. Front protective shell; 20201. Positioning plate; 203. Cover plate; 204. Stabilizing pin; 205. Sealing gasket;

[0035] 3. Locking pin;

[0036] 4. Check valve;

[0037] 5. Baffle. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] Example 1: Please refer to Figures 1 to 9 :

[0040] This utility model proposes a cold- and heat-resistant gas meter adaptable to extreme temperature environments, comprising: a gas meter 1; a gas pipe 101 installed at the top of the gas meter 1, the gas pipe 101 being a partial cross-sectional structure; a rear protective housing 201 installed at the rear of the gas meter 1; and a front protective housing 202 installed at the front of the gas meter 1. A set of bolt connecting blocks is provided on the outer surface of the rear protective housing 201, the pitch of which is machined according to actual needs. The bolt connecting blocks are used to connect and fix bolts. A set of heat-absorbing blocks is respectively provided on the inner surface of the rear protective housing 201 and the front protective housing 202, contacting the outer surface of the gas meter 1. A ventilation slot is formed at the top and bottom of the heat-absorbing block, the ventilation slot having a U-shaped structure. Specifically, the heat-absorbing block can quickly absorb the heat generated by the gas meter 1 during operation or the heat in the environment; the U-shaped ventilation slot forms an air circulation channel; at high temperatures, it accelerates the heat discharge through the drainage sleeve 20101; at low temperatures... To reduce heat loss during operation, the thermal insulation layer of the protective housing further optimizes the temperature environment of the gas meter 1. Two symmetrically distributed sliding grooves with a dovetail structure are provided on the front side of the front protective housing 202. A cover plate 203 is installed between the two sliding grooves, positioning the sliding grooves for the cover plate 203. The cover plate 203 is made of transparent material, allowing operators to observe the gas meter readings through it. Sliding the cover plate 203 outwards facilitates pressing the buttons on the gas meter 1. When closed, the cover plate 203, together with the rear protective housing 201 and the front protective housing 202, forms a sealed space to protect the gas meter 1. Specifically, the dovetail sliding grooves ensure smooth and accurate sliding of the cover plate 203; the transparent cover plate 203 combines reading observation with protection; when closed, it forms a sealed space, reducing the impact of extreme external temperatures on the gas meter 1; when open, it facilitates button operation, balancing protection and operability.

[0041] In this embodiment, a vertical locking pin 3 is installed on the upper part of the front protective housing 202. A positioning plate 20201 with an L-shaped structure is provided on the upper part of the front protective housing 202. A sliding hole is opened on the upper part of the positioning plate 20201, and the locking pin 3 passes through the interior of the sliding hole. A locking groove corresponding to the locking pin 3 is opened on both sides of the upper part of the cover plate 203. A support ring is provided on the outer side of the locking pin 3, and a support spring is installed on the upper part of the support ring. The support spring elastically presses the locking pin 3 downward. The bottom of the locking pin 3 extends into the interior of the locking groove. Specifically, the elastic force of the support spring makes the locking pin 3 stably embedded in the locking groove of the cover plate 203, realizing automatic locking after the cover plate 203 is closed, preventing the cover plate 203 from being accidentally opened due to extreme weather or external force, and ensuring the stability of the sealed space; pulling the locking pin 3 upward can unlock the cover plate 203, which is convenient to operate.

[0042] In this embodiment, a set of stabilizing pins 204 are provided on each side of the front protective housing 202, and a mounting hole is opened on each side of the rear protective housing 201. The stabilizing pins 204 pass through the interior of the mounting holes. With the cooperation of the stabilizing pins 204, the rear protective housing 201 and the front protective housing 202 can be quickly assembled. Specifically, the cooperation between the stabilizing pins 204 and the mounting holes enables precise positioning and rapid splicing of the front and rear protective housings 201 without the need for complex tools, simplifying the installation process and ensuring a tight connection between the two, providing a complete protective space for the gas meter 1. A support spring is installed on the outer side of the stabilizing pin 204, and an annular groove is opened on one side of the stabilizing pin 204. A retaining spring is installed on the inner side of the annular groove. The retaining spring positions one side of the support spring, causing the support spring to store force and stretch the rear protective housing 201 and the front protective housing 202 to move closer together. Specifically, the stored force of the support spring causes the front and rear protective housings 201 to move closer together, and with the retaining spring, the spring is able to move closer together. The positioning ensures the tightness of the connection between the two, avoids gaps caused by vibration or temperature changes, and enhances the sealing and stability of the overall structure. Two symmetrically distributed sealing gaskets 205 are installed between the rear protective shell 201 and the front protective shell 202. The sidewalls of the sealing gaskets 205 are respectively attached to the gas pipe 101, the rear protective shell 201, and the front protective shell 202. The rear protective shell 201, the drain sleeve 20101, the front protective shell 202, the positioning plate 20201, the cover plate 203, the stabilizing pin 204, and the sealing gaskets 205 cooperate with each other to form the protective structure 2. The sealing gaskets 205 are made of high temperature and low temperature resistant materials according to actual needs. The specific function is to fill the gap between the front and rear protective shells 201 and the gas pipe 101, maintain good elasticity and sealing performance under extreme temperatures, prevent external dust and moisture from entering the interior, and reduce temperature exchange, thereby further improving the protective effect of the gas meter 1.

[0043] In this embodiment, a drainage sleeve 20101 is provided on the rear side of the rear protective housing 201. The drainage sleeve 20101 is connected to the interior of the rear protective housing 201. A one-way valve 4 is installed on the inner side of the drainage sleeve 20101. A baffle 5 is installed on the rear side of the drainage sleeve 20101. A sliding groove is formed on each side of the drainage sleeve 20101. The sliding groove has a dovetail groove structure. The two sides of the baffle 5 extend into the interior of the sliding groove. The sliding groove positions the sliding position of the baffle 5. A drain sleeve 4 is installed at the bottom of the baffle 5. A locking bolt, after the baffle 5 moves downward, seals the drain sleeve 20101. This is suitable for use in low-temperature environments. Specifically, the dovetail groove structure ensures the stability of the sliding of the baffle 5. In low-temperature environments, sealing the drain sleeve 20101 with the baffle 5 reduces airflow between the rear protective housing 201 and the outside. Combined with the heat absorption block, this reduces heat loss from the gas meter 1 and maintains a stable internal temperature. In high-temperature environments, the baffle 5 opens, and combined with the one-way valve 4, airflow and heat dissipation are achieved, improving the adaptability of the gas meter 1 to extreme temperatures.

[0044] Example 2, based on Example 1, such as Figures 1-9 As shown, the rear protective shell 201 and the front protective shell 202 are made of materials resistant to high and low temperatures according to actual needs. The inner layer is provided with a heat insulation layer, such as aerogel felt, and the outer layer is coated with a heat-conducting and heat-dissipating coating, such as a graphene composite coating. In severe cold, the heat insulation layer reduces heat loss; in extreme heat, the heat dissipation coating accelerates heat dissipation and maintains a stable internal temperature of the body.

[0045] Example 3, based on Example 1, such as Figures 6-9 As shown, the one-way valve 4 adopts a gravity check structure. The valve disc is connected to the inner wall of the drainage sleeve 20101 through a light spring. Under normal conditions, it is kept closed due to the spring force. It only opens automatically when the air pressure difference on both sides reaches a preset threshold.

[0046] In a high-temperature environment, the heat generated by the gas meter 1 and the heat from the external environment are transferred to the interior of the rear protective housing 201 through the heat absorption block, causing the internal air to expand due to heat and the gas pressure to be higher than that outside. When the gas pressure difference overcomes the spring force, the valve disc of the one-way valve 4 is pushed open, and the hot air is discharged through the drainage sleeve 20101 to achieve heat dissipation. At this time, the baffle 5 is in the open state to ensure smooth airflow.

[0047] Synergistic effect: The automatic opening feature of the one-way valve 4 requires no manual operation. Combined with the manual adjustment of the baffle 5, it can automatically dissipate heat at high temperatures and maintain the internal temperature by closing the baffle 5 at low temperatures, fully adapting to the dynamic needs of extreme temperature environments.

[0048] The working principle of this embodiment:

[0049] Assemble the gas pipe 101 and gas meter 1 using a wrench. Install the gas meter 1 inside the rear protective housing 201 and hide it. Connect the rear protective housing 201 to the front protective housing 202 via the stabilizing pin 204, ensuring that the sealing gasket 205 is aligned with the gas pipe 101. Press the stabilizing pin 204 until the retaining spring is embedded in the annular groove, and the spring will store force to make the two housings fit tightly together. Put the assembled protective structure 2 on the outside of the gas meter 1 and fix it to the wall or bracket via the bolt connection block of the rear protective housing 201. Install the baffle 5.

[0050] In high-temperature environments, slide the baffle 5 upwards to the highest position and secure it with the locking bolts; the one-way valve 4 automatically opens as the internal temperature rises, achieving passive heat dissipation; the gas meter 1 reading can be observed through the transparent cover 203 without opening the protective structure 2.

[0051] In low-temperature environments, slide the baffle 5 downwards to block the drain sleeve 20101 to ensure the heat preservation effect of the gas meter 1; if it is necessary to inspect and operate the gas meter 1, pull the locking pin 3 upwards to open the cover 203, and close and lock it immediately after the operation is completed.

[0052] Through the above working principle and operation process, this utility model effectively solves the problems of high failure rate and difficult maintenance of existing gas meters under extreme temperatures, extends the service life of the equipment, and reduces operating costs.

Claims

1. A cold- and heat-resistant gas meter adaptable to extreme temperature environments, comprising: A gas meter (1), a front protective housing (202) and a baffle (5) are provided. A set of gas pipes (101) are installed at the upper position of the gas meter (1). The gas meter (1) is characterized in that a rear protective housing (201) is installed at the rear side of the gas meter (1), a front protective housing (202) is installed at the front side of the gas meter (1), a set of bolt connecting blocks are provided on the outer side of the rear protective housing (201), a vertical locking pin (3) is installed at the upper position of the front protective housing (202), a flow-draining sleeve (20101) is provided at the rear side of the rear protective housing (201), the flow-draining sleeve (20101) and the rear protective housing (201) are internally connected, a one-way valve (4) is installed at the inner side of the flow-draining sleeve (20101), and a baffle (5) is installed at the rear side of the flow-draining sleeve (20101).

2. The cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 1, characterized in that, A sliding groove is opened on each side of the drainage sleeve (20101). The sliding groove has a dovetail groove structure. The two sides of the baffle (5) extend into the interior of the sliding groove. A locking bolt is installed at the bottom of the baffle (5).

3. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 1, characterized in that, The rear protective shell (201) and the front protective shell (202) are respectively provided with a set of heat-absorbing blocks on their inner sides. The heat-absorbing blocks are in contact with the outer side of the gas meter (1). A ventilation slot is opened at the upper and lower positions of the heat-absorbing blocks.

4. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 1, characterized in that, Two symmetrically distributed sliding grooves are provided on the front side of the front protective housing (202), and a cover plate (203) is installed between the two sliding grooves.

5. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 1, characterized in that, A positioning plate (20201) is provided at the upper position of the front protective housing (202), and a sliding hole is opened at the upper position of the positioning plate (20201), through which the locking pin (3) passes.

6. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 4, characterized in that, The cover plate (203) has a locking groove on each side corresponding to the locking pin (3). A support ring is provided on the outer side of the locking pin (3). A support spring is installed above the support ring. The bottom of the locking pin (3) extends into the interior of the locking groove.

7. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 1, characterized in that, The front protective housing (202) is provided with a set of stabilizing pins (204) on both sides, and the rear protective housing (201) is provided with a mounting hole on both sides, with the stabilizing pins (204) passing through the interior of the mounting hole.

8. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 7, characterized in that, A support spring is installed on the outer side of the stabilizing pin (204), and an annular groove is opened on one side of the stabilizing pin (204). A retaining ring is installed on the inner side of the annular groove.

9. A cold-resistant and heat-resistant gas meter adaptable to extreme temperature environments according to claim 1, characterized in that, Two symmetrically distributed sealing gaskets (205) are installed between the rear protective shell (201) and the front protective shell (202). The sidewalls of the sealing gaskets (205) are respectively attached to the gas pipe (101), the rear protective shell (201), and the front protective shell (202). The rear protective shell (201), the drain sleeve (20101), the front protective shell (202), the positioning plate (20201), the cover plate (203), the stabilizing pin (204), and the sealing gaskets (205) cooperate with each other to form a protective structure (2).

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