High and low temperature test device for pressure gauge

Abstract

The utility model provides a high and low temperature test device for a pressure gauge, and belongs to the technical field of pressure gauge test devices. The pressure gauge high and low temperature test device comprises a main body and a test mechanism, the main body comprises a high and low temperature test box body, one side of the high and low temperature test box body is hinged with a box door through a pair of hinges, one side of the high and low temperature test box body is provided with an opening, an observation window is installed in the opening, and the test mechanism comprises three test tubes. The three testing pipes are arranged on the inner side of the high-low temperature testing box body and are distributed in a stepped mode, three internal thread mounting blocks are arranged at the upper ends of the three testing pipes, the interiors of the internal thread mounting blocks are in threaded connection with blocking caps, one ends of the three testing pipes penetrate through the high-low temperature testing box body, extend to the outside and are sleeved with stop valves, and the other ends of the three testing pipes are in threaded connection with the blocking caps. According to the pressure gauge experiment device, the practicability of the pressure gauge experiment device can be effectively improved, and the pressure gauge experiment device has high practical value.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge test devices, in particular to a high and low temperature test device for a pressure gauge. Background Art

[0002] Pressure gauges are instruments that use elastic elements as sensitive elements to measure and indicate pressures higher than the ambient pressure. They are widely used in almost all industrial processes and scientific research fields. They can be found everywhere in the fields of thermal pipe networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. Especially in the process of industrial process control and technical measurement, mechanical pressure gauges are increasingly widely used because of their elastic sensitive elements with high mechanical strength and easy production.

[0003] Based on the above, the inventors have discovered the following problems: the pressure gauge needs to be tested after production and processing to avoid unqualified products in the pressure gauge. Existing pressure gauges are often tested at room temperature, which limits the test results of the pressure gauge and makes it impossible to know the stability of the pressure gauge in high or low temperature environments.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a high and low temperature test device for a pressure gauge is provided, in order to achieve a purpose with greater practical value. Utility Model Content

[0005] In order to solve the above technical problems, the embodiment of the utility model provides a high and low temperature test device for a pressure gauge, which is specifically implemented through the following technical solutions:

[0006] The pressure gauge high and low temperature test device comprises a main body and a test mechanism, wherein the main body comprises a high and low temperature test box body, one side of the high and low temperature test box body is hinged with a box door through a pair of hinges, one side of the high and low temperature test box body is provided with an opening, and an observation window is installed inside the opening, and the test mechanism comprises three test tubes, the three test tubes are all arranged on the inner side of the high and low temperature test box body, and the three test tubes are distributed in a stepped manner, the upper ends of the three test tubes are provided with three internal threaded mounting blocks, the internal parts of the internal threaded mounting blocks are all threadedly connected with plugging caps, one ends of the three test tubes all penetrate the high and low temperature test box body and extend to the outside, and are all provided with stop valves, and the other ends of the three stop valves are all connected with connecting pipes.

[0007] Furthermore, a sealing strip is provided at the upper end of the high and low temperature test box body, located on one side of the box door, and the outer side of the sealing strip abuts against the inner side of the box door.

[0008] The beneficial effect of adopting the above further solution is that by installing the sealing strip, the sealing between the box door and the high and low temperature test box body is further improved.

[0009] Furthermore, a first connecting block is fixedly mounted on one side of the box door, and a hook rod is rotatably connected to one side of the first connecting block.

[0010] The beneficial effect of adopting the above further solution is that the connection hook rod can be rotated more easily by rotating it on one side of the first connection block.

[0011] Furthermore, a second connection block is fixedly installed on one side of the high and low temperature test box body close to the first connection block, a fixing column is fixedly installed on one side of the second connection block, and one end of the hook rod is clamped between the fixing column.

[0012] The beneficial effect of adopting the above further solution is that by clamping the hook rod with the fixing column, it is convenient to fix the box door and the high and low temperature test box body.

[0013] Furthermore, universal wheels are installed at four corners of the bottom of the high and low temperature test box body, and brake foot plates are provided on the universal wheels.

[0014] The beneficial effect of adopting the above further solution is that by installing universal wheels, it is convenient for users to move the high and low temperature test box body.

[0015] Furthermore, metal grilles are installed on both sides of the bottom end of the high and low temperature test box body, and an exhaust hood is provided on one side of the upper end of the high and low temperature test box body.

[0016] The beneficial effect of adopting the above further solution is that, by installing the metal grille, it is convenient to dissipate heat when the refrigeration equipment inside the high and low temperature test box body is working.

[0017] Furthermore, a controller is installed on the bottom side of the box door, a temperature sensor is installed on the inner side of the high and low temperature test box body, and the high and low temperature test box body and the temperature sensor are connected by wires and controlled by the controller.

[0018] The beneficial effect of adopting the above further solution is that by installing a controller, the high and low temperature test box body can be conveniently controlled to cool or heat, and the temperature sensor can be used to monitor the internal temperature of the high and low temperature test box body in real time.

[0019] Furthermore, a quick-release connector is provided at the bottom end of the connecting pipe.

[0020] The beneficial effect of adopting the above further solution is that, by installing the quick-release connector, it is convenient for the user to connect the external injection and pressure equipment to test the pressure gauge.

[0021] The beneficial effects of the utility model are as follows: the pressure gauge high and low temperature test device obtained by the utility model through the above design, the pressure gauge high and low temperature test device, by setting a high and low temperature test box body, the high and low temperature test box body can generate high temperature or low temperature inside when working, thereby simulating the outdoor high temperature or low temperature environment, through the hinged box door, the high and low temperature test box body can be conveniently closed to avoid the loss of high temperature or cold air inside, and the observation window can be installed to facilitate the user to view the test situation of the pressure gauge inside the high and low temperature test box body, and by setting three test tubes and distributing them in a stepped shape, the upper part of the test tube is Each end is provided with three internal thread mounting blocks, which can test nine pressure gauges at the same time, and because of the stepped distribution, the nine pressure gauges will not block each other and affect the test personnel's viewing. By connecting the plugging cap to the internal thread of the internal thread mounting block, when it is necessary to test a single or less than nine pressure gauges, the internal thread mounting block can be sealed with the plugging cap. By arranging a stop valve at one end of the test tube and connecting the other end of the stop valve through a connecting pipe, when the connecting pipe is connected to the injection pressure equipment, the stop valve can be adjusted to make the pressures entering the three test tubes different, thereby improving the test effect of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the pressure gauge high and low temperature test device provided by the utility model;

[0024] Figure 2 A side cross-sectional schematic diagram of a high and low temperature test device for a pressure gauge provided by the utility model;

[0025] Figure 3 A partial front cross-sectional schematic diagram of a test tube of a pressure gauge high and low temperature test device provided by the utility model;

[0026] Figure 4 A side view of the high and low temperature test device for a pressure gauge provided by the utility model Figure 1 ;

[0027] Figure 5 A schematic front view of a high and low temperature test device for a pressure gauge provided by the utility model;

[0028] Figure 6 A side view of the high and low temperature test device for a pressure gauge provided by the utility model Figure 2 ;

[0029] Figure 7 The utility model provides a high and low temperature test device for a pressure gauge Figure 1 A magnified schematic diagram of the A structure.

[0030] In the figure: 100, main body; 1001, high and low temperature test box body; 1002, box door; 1003, observation window; 1004, controller; 1005, hook rod; 1006, second connecting block; 1007, universal wheel; 1008, metal grille; 1009, first connecting block; 1010, fixing column; 1011, sealing strip; 1012, temperature sensor; 200, test mechanism; 2001, test tube; 2002, stop valve; 2003, connecting tube; 2004, internal thread mounting block; 2005, plugging cap. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1 of the high and low temperature test device for pressure gauge of the utility model

[0034] The utility model provides the following technical solutions: Figure 1-Figure 7As shown, the pressure gauge high and low temperature test device includes a main body 100 and a test mechanism 200. The main body 100 includes a high and low temperature test box body 1001. One side of the high and low temperature test box body 1001 is hinged with a box door 1002 through a pair of hinges. One side of the high and low temperature test box body 1001 is provided with an opening, and an observation window 1003 is installed inside the opening. The test mechanism 200 includes three test tubes 2001. The three test tubes 2001 are all arranged on the inner side of the high and low temperature test box body 1001, and the three test tubes 2001 are distributed in a stepped manner. The upper end of the test tube 2001 is provided with three internal thread mounting blocks 2004, and the internal thread mounting blocks 2004 are all threadedly connected with plugging caps 2005. One end of the three test tubes 2001 passes through the high and low temperature test box body 1001 and extends to the outside, and is sleeved with a stop valve 2002. The other end of the three stop valves 2002 is connected to a connecting pipe 2003. By setting the high and low temperature test box body 1001, the high and low temperature test box body 1001 can generate high temperature or low temperature inside when working, thereby simulating the outdoor high temperature or low temperature environment. The box door 1002 is convenient for closing the high and low temperature test box body 1001 to prevent the loss of high temperature or cold air inside. By installing the observation window 1003, it is convenient for the user to check the test status of the pressure gauge inside the high and low temperature test box body 1001. By setting three test tubes 2001 and making them arranged in a stepped shape, the upper ends of the test tubes 2001 are provided with three internal thread mounting blocks 2004, so that nine pressure gauges can be tested at the same time. And because of the stepped distribution, the nine pressure gauges will not block each other, affecting the test personnel's inspection. It can be seen that by connecting the plugging cap 2005 to the internal thread of the internal thread mounting block 2004, when it is necessary to test a single pressure gauge or less than nine pressure gauges, the plugging cap 2005 can be used to seal the internal thread mounting block 2004, and by installing a stop valve 2002 on one end of the test tube 2001 and connecting the other end of the stop valve 2002 through a connecting pipe 2003, when the connecting pipe 2003 is connected to the injection pressure equipment, the stop valve 2002 can be adjusted to make the pressures entering the three test tubes 2001 different, thereby improving the test effect of the pressure gauge.

[0035] Embodiment 2 of the utility model pressure gauge high and low temperature test device

[0036] Reference Figure 1-Figure 7As shown, the upper end of the high and low temperature test box body 1001 is located on one side of the box door 1002 and is provided with a sealing strip 1011, the outer side of the sealing strip 1011 is in contact with the inner side of the box door 1002, a first connecting block 1009 is fixedly installed on one side of the box door 1002, and a hook rod 1005 is rotatably connected to one side of the first connecting block 1009. A second connecting block 1006 is fixedly installed on the side of the high and low temperature test box body 1001 close to the first connecting block 1009, and the second connecting block 1006 A fixing column 1010 is fixedly installed on one side, and one end of the hook rod 1005 is clamped between the fixing column 1010. By installing a sealing strip 1011, the sealing between the box door 1002 and the high and low temperature test box body 1001 is further improved. By rotating the connecting hook rod 1005 on one side of the first connecting block 1009, it is convenient for it to rotate. By clamping the hook rod 1005 with the fixing column 1010, the box door 1002 and the high and low temperature test box body 1001 are conveniently fixed.

[0037] Embodiment 3 of the high and low temperature test device of the utility model pressure gauge

[0038] Reference Figure 1-Figure 7 As shown, universal wheels 1007 are installed at the four corners of the bottom of the high and low temperature test box body 1001, and brake foot plates are installed on the universal wheels 1007. Metal grilles 1008 are installed on both sides of the bottom of the high and low temperature test box body 1001. An exhaust hood is installed on one side of the upper end of the high and low temperature test box body 1001. A controller 1004 is installed on the bottom side of the box door 1002. A temperature sensor 1012 is installed on the inner side of the high and low temperature test box body 1001. The high and low temperature test box body 1001 and the temperature sensor 1012 are connected by wires and controlled by the controller 1004. The connecting pipe 2003 A quick-release connector is provided at the bottom end. By installing universal wheels 1007, the user can move the high and low temperature test box body 1001 conveniently. By installing metal grilles 1008, the internal refrigeration equipment of the high and low temperature test box body 1001 can dissipate heat when working. By installing controller 1004, the high and low temperature test box body 1001 can be conveniently controlled to cool or heat. The temperature sensor 1012 can be used to monitor the internal temperature of the high and low temperature test box body 1001 in real time. By installing quick-release connectors, users can connect external injection and pressure equipment to test the pressure gauge.

[0039] Specifically, the working principle of the pressure gauge high and low temperature test device is as follows: when in use, open the box door 1002, and install the pressure gauge to be tested in the internal thread mounting block 2004 installed on the upper end of the test tube 2001. There are three test tubes 2001 in total, and three internal thread mounting blocks 2004 are provided thereon, so nine pressure gauges can be installed at the same time, and the internal thread mounting blocks 2004 are connected to the internal threads with plugging caps 2005. When the number of tests is less than nine, the plugging caps 2005 can be used to seal the internal thread mounting blocks 2004. After the pressure gauge is installed, close the box door 1002 and the high and low temperature test box body 1001, and rotate the hook rod 1005 to engage it with the fixing column 1010. Subsequently, the input end of the external injection and pressure equipment is connected to the internal thread of the test tube 2001. The quick connector installed at the bottom of the connecting pipe 2003 is connected to inject pressure into the connecting pipe 2003. At this time, the user adjusts the flow of the stop valve 2002 according to the test needs, so that the pressure entering the three test tubes 2001 is different. At the same time, the high and low temperature test box body 1001 is started through the controller 1004 to cool or heat the inside. A temperature sensor 1012 is installed inside the high and low temperature test box body 1001. The user can check the internal temperature of the high and low temperature test box body 1001 from the controller 1004. By installing the observation window 1003, the user can check the test status of the pressure gauge outside the high and low temperature test box body 1001. In addition, since the three test tubes 2001 are distributed in a stepped manner, they will not block each other.

[0040] It should be noted that in the pressure gauge high and low temperature test device, the specific model specifications of the high and low temperature test box body 1001, the controller 1004, and the temperature sensor 1012 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0041] In the high and low temperature test device for pressure gauges, the power supply and principles of the high and low temperature test box body 1001, the controller 1004, and the temperature sensor 1012 are clear to those skilled in the art and will not be described in detail herein.

[0042] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. High and low temperature test device for pressure gauge, characterized in that: The invention comprises a main body (100) and a testing mechanism (200), wherein the main body (100) comprises a high and low temperature testing box body (1001), one side of the high and low temperature testing box body (1001) is hinged with a box door (1002) via a pair of hinges, one side of the high and low temperature testing box body (1001) is provided with an opening, and an observation window (1003) is installed inside the opening, and the testing mechanism (200) comprises three testing tubes (2001), and the three testing tubes (2001) are all arranged on the high and low temperature testing box body (1001). 001), and the three test tubes (2001) are distributed in a stepped manner, the upper ends of the three test tubes (2001) are provided with three internal thread mounting blocks (2004), the internal ends of the internal thread mounting blocks (2004) are all threadedly connected with plugging caps (2005), one end of the three test tubes (2001) passes through the high and low temperature test box body (1001) and extends to the outside, and are all sleeved with stop valves (2002), and the other ends of the three stop valves (2002) are all connected with connecting pipes (2003).

2. The pressure gauge high and low temperature test device according to claim 1, characterized in that: The upper end of the high and low temperature test box body (1001) is located on one side of the box door (1002) and is provided with a sealing strip (1011), and the outer side of the sealing strip (1011) abuts against the inner side of the box door (1002).

3. The pressure gauge high and low temperature test device according to claim 1, characterized in that: A first connection block (1009) is fixedly mounted on one side of the box door (1002), and a hook rod (1005) is rotatably connected to one side of the first connection block (1009).

4. The pressure gauge high and low temperature test device according to claim 3, characterized in that: The high and low temperature test box body (1001) is fixedly mounted with a second connection block (1006) on one side close to the first connection block (1009), a fixing column (1010) is fixedly mounted on one side of the second connection block (1006), and one end of the hook rod (1005) is clamped with the fixing column (1010).

5. The pressure gauge high and low temperature test device according to claim 1, characterized in that: Universal wheels (1007) are installed at the four corners of the bottom of the high and low temperature test box body (1001), and brake foot plates are provided on the universal wheels (1007).

6. The pressure gauge high and low temperature test device according to claim 1, characterized in that: Metal grilles (1008) are installed on both sides of the bottom of the high and low temperature test box body (1001), and an exhaust hood is provided on one side of the upper end of the high and low temperature test box body (1001).

7. The pressure gauge high and low temperature test device according to claim 1, characterized in that: A controller (1004) is installed on the bottom side of the box door (1002), a temperature sensor (1012) is installed on the inner side of the high and low temperature test box body (1001), and the high and low temperature test box body (1001) and the temperature sensor (1012) are connected by wires and are controlled by the controller (1004).

8. The pressure gauge high and low temperature test device according to claim 1, characterized in that: The bottom end of the connecting pipe (2003) is provided with a quick-release connector.

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